Merge pull request #2870 from hathach/hcd-dwc2

Implement Host Driver support for synopsys dwc2

18 files changed, 2418 insertions, 701 deletions

diff --git a/src/common/tusb_common.h b/src/common/tusb_common.h
index d3e0cf888..59cc0fb48 100644
--- a/src/common/tusb_common.h
+++ b/src/common/tusb_common.h
@@ -123,11 +123,15 @@ TU_ATTR_ALWAYS_INLINE static inline int tu_memcpy_s(void *dest, size_t destsz, c
 
 //------------- Bytes -------------//
 TU_ATTR_ALWAYS_INLINE static inline uint32_t tu_u32(uint8_t b3, uint8_t b2, uint8_t b1, uint8_t b0) {
-  return ( ((uint32_t) b3) << 24) | ( ((uint32_t) b2) << 16) | ( ((uint32_t) b1) << 8) | b0;
+  return (((uint32_t)b3) << 24) | (((uint32_t)b2) << 16) | (((uint32_t)b1) << 8) | b0;
+}
+
+TU_ATTR_ALWAYS_INLINE static inline uint32_t tu_u32_from_u16(uint16_t high, uint16_t low) {
+  return (((uint32_t)high) << 16) | low;
 }
 
 TU_ATTR_ALWAYS_INLINE static inline uint16_t tu_u16(uint8_t high, uint8_t low) {
-  return (uint16_t) ((((uint16_t) high) << 8) | low);
+  return (uint16_t)((((uint16_t)high) << 8) | low);
 }
 
 TU_ATTR_ALWAYS_INLINE static inline uint8_t tu_u32_byte3(uint32_t ui32) { return TU_U32_BYTE3(ui32); }
diff --git a/src/common/tusb_mcu.h b/src/common/tusb_mcu.h
index c77afecad..41f552d33 100644
--- a/src/common/tusb_mcu.h
+++ b/src/common/tusb_mcu.h
@@ -169,6 +169,7 @@
       defined (STM32F107xB) || defined (STM32F107xC)
     #define TUP_USBIP_DWC2
     #define TUP_USBIP_DWC2_STM32
+    #define CFG_TUH_DWC2_DMA_ENABLE_DEFAULT 0
 
     #define TUP_DCD_ENDPOINT_MAX  4
   #elif defined(STM32F102x6) || defined(STM32F102xB) || \
@@ -343,12 +344,14 @@
   #define TUP_USBIP_DWC2
   #define TUP_USBIP_DWC2_ESP32
   #define TUP_DCD_ENDPOINT_MAX    7 // only 5 TX FIFO for endpoint IN
+  #define CFG_TUH_DWC2_DMA_ENABLE_DEFAULT  0 // TODO currently have issue with buffer DMA with espressif
 
 #elif TU_CHECK_MCU(OPT_MCU_ESP32P4)
   #define TUP_USBIP_DWC2
   #define TUP_USBIP_DWC2_ESP32
   #define TUP_RHPORT_HIGHSPEED    1  // port0 FS, port1 HS
   #define TUP_DCD_ENDPOINT_MAX    16 // FS 7 ep, HS 16 ep
+  #define CFG_TUH_DWC2_DMA_ENABLE_DEFAULT  0 // TODO currently have issue with buffer DMA with espressif
 
 #elif TU_CHECK_MCU(OPT_MCU_ESP32, OPT_MCU_ESP32C2, OPT_MCU_ESP32C3, OPT_MCU_ESP32C6, OPT_MCU_ESP32H2)
   #if (CFG_TUD_ENABLED || !(defined(CFG_TUH_MAX3421) && CFG_TUH_MAX3421))
diff --git a/src/common/tusb_private.h b/src/common/tusb_private.h
index 8a479c042..c71775abb 100644
--- a/src/common/tusb_private.h
+++ b/src/common/tusb_private.h
@@ -24,9 +24,8 @@
  * This file is part of the TinyUSB stack.
  */
 
-
-#ifndef _TUSB_PRIVATE_H_
-#define _TUSB_PRIVATE_H_
+#ifndef TUSB_PRIVATE_H_
+#define TUSB_PRIVATE_H_
 
 // Internal Helper used by Host and Device Stack
 
@@ -34,6 +33,13 @@
  extern "C" {
 #endif
 
+#define TUP_USBIP_CONTROLLER_NUM 2
+extern tusb_role_t _tusb_rhport_role[TUP_USBIP_CONTROLLER_NUM];
+
+//--------------------------------------------------------------------+
+// Endpoint
+//--------------------------------------------------------------------+
+
 typedef struct TU_ATTR_PACKED {
   volatile uint8_t busy    : 1;
   volatile uint8_t stalled : 1;
@@ -163,4 +169,4 @@ bool tu_edpt_stream_peek(tu_edpt_stream_t* s, uint8_t* ch) {
  }
 #endif
 
-#endif /* _TUSB_PRIVATE_H_ */
+#endif
diff --git a/src/common/tusb_types.h b/src/common/tusb_types.h
index 53bb367cb..d045a3c8f 100644
--- a/src/common/tusb_types.h
+++ b/src/common/tusb_types.h
@@ -41,8 +41,8 @@
 
 typedef enum {
   TUSB_ROLE_INVALID = 0,
-  TUSB_ROLE_DEVICE,
-  TUSB_ROLE_HOST,
+  TUSB_ROLE_DEVICE  = 0x1,
+  TUSB_ROLE_HOST    = 0x2,
 } tusb_role_t;
 
 /// defined base on EHCI specs value for Endpoint Speed
@@ -56,10 +56,10 @@ typedef enum {
 
 /// defined base on USB Specs Endpoint's bmAttributes
 typedef enum {
-  TUSB_XFER_CONTROL = 0 ,
-  TUSB_XFER_ISOCHRONOUS ,
-  TUSB_XFER_BULK        ,
-  TUSB_XFER_INTERRUPT
+  TUSB_XFER_CONTROL     = 0,
+  TUSB_XFER_ISOCHRONOUS = 1,
+  TUSB_XFER_BULK        = 2,
+  TUSB_XFER_INTERRUPT   = 3
 } tusb_xfer_type_t;
 
 typedef enum {
@@ -224,10 +224,10 @@ enum {
 // USB 2.0 Spec Table 9-7: Test Mode Selectors
 typedef enum {
   TUSB_FEATURE_TEST_J = 1,
-  TUSB_FEATURE_TEST_K,
-  TUSB_FEATURE_TEST_SE0_NAK,
-  TUSB_FEATURE_TEST_PACKET,
-  TUSB_FEATURE_TEST_FORCE_ENABLE,
+  TUSB_FEATURE_TEST_K = 2,
+  TUSB_FEATURE_TEST_SE0_NAK = 3,
+  TUSB_FEATURE_TEST_PACKET = 4,
+  TUSB_FEATURE_TEST_FORCE_ENABLE = 5,
 } tusb_feature_test_mode_t;
 
 //--------------------------------------------------------------------+
@@ -264,7 +264,7 @@ typedef enum {
 } microsoft_os_20_type_t;
 
 enum {
-  CONTROL_STAGE_IDLE,
+  CONTROL_STAGE_IDLE = 0,
   CONTROL_STAGE_SETUP,
   CONTROL_STAGE_DATA,
   CONTROL_STAGE_ACK
diff --git a/src/common/tusb_verify.h b/src/common/tusb_verify.h
index 3e0f1f106..6d02d3572 100644
--- a/src/common/tusb_verify.h
+++ b/src/common/tusb_verify.h
@@ -83,7 +83,7 @@
     if ( (*ARM_CM_DHCSR) & 1UL ) __asm("BKPT #0\n"); /* Only halt mcu if debugger is attached */            \
   } while(0)
 
-#elif defined(__riscv) && !TUP_MCU_ESPRESSIF
+#elif defined(__riscv) && !TUSB_MCU_VENDOR_ESPRESSIF
   #define TU_BREAKPOINT() do { __asm("ebreak\n"); } while(0)
 
 #elif defined(_mips)
diff --git a/src/host/usbh.c b/src/host/usbh.c
index b5df29f50..b0a2b2160 100644
--- a/src/host/usbh.c
+++ b/src/host/usbh.c
@@ -278,15 +278,6 @@ static void process_removing_device(uint8_t rhport, uint8_t hub_addr, uint8_t hu
 static bool usbh_edpt_control_open(uint8_t dev_addr, uint8_t max_packet_size);
 static bool usbh_control_xfer_cb (uint8_t daddr, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes);
 
-#if CFG_TUSB_OS == OPT_OS_NONE
-// TODO rework time-related function later
-// weak and overridable
-TU_ATTR_WEAK void osal_task_delay(uint32_t msec) {
-  const uint32_t start = hcd_frame_number(_usbh_controller);
-  while ( ( hcd_frame_number(_usbh_controller) - start ) < msec ) {}
-}
-#endif
-
 TU_ATTR_ALWAYS_INLINE static inline bool queue_event(hcd_event_t const * event, bool in_isr) {
   TU_ASSERT(osal_queue_send(_usbh_q, event, in_isr));
   tuh_event_hook_cb(event->rhport, event->event_id, in_isr);
@@ -447,9 +438,9 @@ bool tuh_deinit(uint8_t rhport) {
 }
 
 bool tuh_task_event_ready(void) {
-  // Skip if stack is not initialized
-  if ( !tuh_inited() ) return false;
-
+  if (!tuh_inited()) {
+    return false; // Skip if stack is not initialized
+  }
   return !osal_queue_empty(_usbh_q);
 }
 
@@ -487,17 +478,27 @@ void tuh_task_ext(uint32_t timeout_ms, bool in_isr) {
         // due to the shared _usbh_ctrl_buf, we must complete enumerating one device before enumerating another one.
         // TODO better to have an separated queue for newly attached devices
         if (_dev0.enumerating) {
-          TU_LOG_USBH("[%u:] USBH Defer Attach until current enumeration complete\r\n", event.rhport);
+          // Some device can cause multiple duplicated attach events
+          // drop current enumerating and start over for a proper port reset
+          if (event.rhport == _dev0.rhport && event.connection.hub_addr == _dev0.hub_addr &&
+              event.connection.hub_port == _dev0.hub_port) {
+            // abort/cancel current enumeration and start new one
+            TU_LOG1("[%u:] USBH Device Attach (duplicated)\r\n", event.rhport);
+            tuh_edpt_abort_xfer(0, 0);
+            enum_new_device(&event);
+          } else {
+            TU_LOG_USBH("[%u:] USBH Defer Attach until current enumeration complete\r\n", event.rhport);
 
-          bool is_empty = osal_queue_empty(_usbh_q);
-          queue_event(&event, in_isr);
+            bool is_empty = osal_queue_empty(_usbh_q);
+            queue_event(&event, in_isr);
 
-          if (is_empty) {
-            // Exit if this is the only event in the queue, otherwise we may loop forever
-            return;
+            if (is_empty) {
+              // Exit if this is the only event in the queue, otherwise we may loop forever
+              return;
+            }
           }
         } else {
-          TU_LOG_USBH("[%u:] USBH DEVICE ATTACH\r\n", event.rhport);
+          TU_LOG1("[%u:] USBH Device Attach\r\n", event.rhport);
           _dev0.enumerating = 1;
           enum_new_device(&event);
         }
@@ -603,12 +604,12 @@ bool tuh_control_xfer (tuh_xfer_t* xfer) {
   TU_VERIFY(xfer->ep_addr == 0 && xfer->setup);
 
   // Check if device is still connected (enumerating for dev0)
-  uint8_t const daddr = xfer->daddr;
-  if ( daddr == 0 ) {
-    if (!_dev0.enumerating) return false;
+  const uint8_t daddr = xfer->daddr;
+  if (daddr == 0) {
+    TU_VERIFY(_dev0.enumerating);
   } else {
-    usbh_device_t const* dev = get_device(daddr);
-    if (dev && dev->connected == 0) return false;
+    const usbh_device_t* dev = get_device(daddr);
+    TU_VERIFY(dev && dev->connected);
   }
 
   // pre-check to help reducing mutex lock
@@ -778,24 +779,26 @@ bool tuh_edpt_xfer(tuh_xfer_t* xfer) {
 }
 
 bool tuh_edpt_abort_xfer(uint8_t daddr, uint8_t ep_addr) {
-  usbh_device_t* dev = get_device(daddr);
-  TU_VERIFY(dev);
-
   TU_LOG_USBH("[%u] Aborted transfer on EP %02X\r\n", daddr, ep_addr);
 
-  uint8_t const epnum = tu_edpt_number(ep_addr);
-  uint8_t const dir   = tu_edpt_dir(ep_addr);
+  const uint8_t epnum = tu_edpt_number(ep_addr);
+  const uint8_t dir   = tu_edpt_dir(ep_addr);
+
+  if (epnum == 0) {
+    // Also include dev0 for aborting enumerating
+    const uint8_t rhport = usbh_get_rhport(daddr);
 
-  if ( epnum == 0 ) {
     // control transfer: only 1 control at a time, check if we are aborting the current one
     TU_VERIFY(daddr == _ctrl_xfer.daddr && _ctrl_xfer.stage != CONTROL_STAGE_IDLE);
-    TU_VERIFY(hcd_edpt_abort_xfer(dev->rhport, daddr, ep_addr));
-    // reset control transfer state to idle
-    _set_control_xfer_stage(CONTROL_STAGE_IDLE);
+    hcd_edpt_abort_xfer(rhport, daddr, ep_addr);
+    _set_control_xfer_stage(CONTROL_STAGE_IDLE); // reset control transfer state to idle
   } else {
-    // non-control skip if not busy
-    TU_VERIFY(dev->ep_status[epnum][dir].busy);
-    TU_VERIFY(hcd_edpt_abort_xfer(dev->rhport, daddr, ep_addr));
+    usbh_device_t* dev = get_device(daddr);
+    TU_VERIFY(dev);
+
+    TU_VERIFY(dev->ep_status[epnum][dir].busy); // non-control skip if not busy
+    hcd_edpt_abort_xfer(dev->rhport, daddr, ep_addr);
+
     // mark as ready and release endpoint if transfer is aborted
     dev->ep_status[epnum][dir].busy = false;
     tu_edpt_release(&dev->ep_status[epnum][dir], _usbh_mutex);
@@ -1281,9 +1284,9 @@ static void process_removing_device(uint8_t rhport, uint8_t hub_addr, uint8_t hu
 //--------------------------------------------------------------------+
 
 enum {
-  ENUM_RESET_DELAY = 50, // USB specs: 10 to 50ms
-  ENUM_CONTACT_DEBOUNCING_DELAY = 450, // when plug/unplug a device, physical connection can be bouncing and may
-                                       // generate a series of attach/detach event. This delay wait for stable connection
+  ENUM_RESET_DELAY_MS = 50,       // USB specs: 10 to 50ms
+  ENUM_DEBOUNCING_DELAY_MS = 450, // when plug/unplug a device, physical connection can be bouncing and may
+                                  // generate a series of attach/detach event. This delay wait for stable connection
 };
 
 enum {
@@ -1322,7 +1325,7 @@ static void process_enumeration(tuh_xfer_t* xfer) {
     bool retry = _dev0.enumerating && (failed_count < ATTEMPT_COUNT_MAX);
     if ( retry ) {
       failed_count++;
-      osal_task_delay(ATTEMPT_DELAY_MS); // delay a bit
+      tusb_time_delay_ms_api(ATTEMPT_DELAY_MS); // delay a bit
       TU_LOG1("Enumeration attempt %u\r\n", failed_count);
       retry = tuh_control_xfer(xfer);
     }
@@ -1364,7 +1367,7 @@ static void process_enumeration(tuh_xfer_t* xfer) {
     }
 
     case ENUM_HUB_GET_STATUS_2:
-      osal_task_delay(ENUM_RESET_DELAY);
+      tusb_time_delay_ms_api(ENUM_RESET_DELAY_MS);
       TU_ASSERT(hub_port_get_status(_dev0.hub_addr, _dev0.hub_port, _usbh_ctrl_buf,
                                     process_enumeration, ENUM_HUB_CLEAR_RESET_2),);
       break;
@@ -1402,7 +1405,7 @@ static void process_enumeration(tuh_xfer_t* xfer) {
         if (_dev0.hub_addr == 0) {
           // connected directly to roothub
           hcd_port_reset( _dev0.rhport );
-          osal_task_delay(RESET_DELAY); // TODO may not work for no-OS on MCU that require reset_end() since
+          tusb_time_delay_ms_api(RESET_DELAY); // TODO may not work for no-OS on MCU that require reset_end() since
                                         // sof of controller may not running while resetting
           hcd_port_reset_end(_dev0.rhport);
           // TODO: fall through to SET ADDRESS, refactor later
@@ -1424,9 +1427,9 @@ static void process_enumeration(tuh_xfer_t* xfer) {
 
     case ENUM_GET_DEVICE_DESC: {
       // Allow 2ms for address recovery time, Ref USB Spec 9.2.6.3
-      osal_task_delay(2);
+      tusb_time_delay_ms_api(2);
 
-      uint8_t const new_addr = (uint8_t) tu_le16toh(xfer->setup->wValue);
+      const uint8_t new_addr = (uint8_t) tu_le16toh(xfer->setup->wValue);
 
       usbh_device_t* new_dev = get_device(new_addr);
       TU_ASSERT(new_dev,);
@@ -1514,20 +1517,25 @@ static void process_enumeration(tuh_xfer_t* xfer) {
   }
 }
 
+
+
 static bool enum_new_device(hcd_event_t* event) {
   _dev0.rhport = event->rhport;
   _dev0.hub_addr = event->connection.hub_addr;
   _dev0.hub_port = event->connection.hub_port;
 
   if (_dev0.hub_addr == 0) {
-    // connected/disconnected directly with roothub
+    // connected directly to roothub
     hcd_port_reset(_dev0.rhport);
-    osal_task_delay(ENUM_RESET_DELAY); // TODO may not work for no-OS on MCU that require reset_end() since
-    // sof of controller may not running while resetting
+
+    // Since we are in middle of rhport reset, frame number is not available yet.
+    // need to depend on tusb_time_millis_api()
+    tusb_time_delay_ms_api(ENUM_RESET_DELAY_MS);
+
     hcd_port_reset_end(_dev0.rhport);
 
     // wait until device connection is stable TODO non blocking
-    osal_task_delay(ENUM_CONTACT_DEBOUNCING_DELAY);
+    tusb_time_delay_ms_api(ENUM_DEBOUNCING_DELAY_MS);
 
     // device unplugged while delaying
     if (!hcd_port_connect_status(_dev0.rhport)) {
@@ -1548,12 +1556,11 @@ static bool enum_new_device(hcd_event_t* event) {
   }
 #if CFG_TUH_HUB
   else {
-    // connected/disconnected via external hub
+    // connected via external hub
     // wait until device connection is stable TODO non blocking
-    osal_task_delay(ENUM_CONTACT_DEBOUNCING_DELAY);
+    tusb_time_delay_ms_api(ENUM_DEBOUNCING_DELAY_MS);
 
     // ENUM_HUB_GET_STATUS
-    //TU_ASSERT( hub_port_get_status(_dev0.hub_addr, _dev0.hub_port, _usbh_ctrl_buf, enum_hub_get_status0_complete, 0) );
     TU_ASSERT(hub_port_get_status(_dev0.hub_addr, _dev0.hub_port, _usbh_ctrl_buf,
                                   process_enumeration, ENUM_HUB_CLEAR_RESET_1));
   }
diff --git a/src/portable/synopsys/dwc2/dcd_dwc2.c b/src/portable/synopsys/dwc2/dcd_dwc2.c
index f30ec5ee3..fe67de8dc 100644
--- a/src/portable/synopsys/dwc2/dcd_dwc2.c
+++ b/src/portable/synopsys/dwc2/dcd_dwc2.c
@@ -35,45 +35,7 @@
 #define DWC2_DEBUG    2
 
 #include "device/dcd.h"
-#include "dwc2_type.h"
-
-// Following symbols must be defined by port header
-// - _dwc2_controller[]: array of controllers
-// - DWC2_EP_MAX: largest EP counts of all controllers
-// - dwc2_phy_init/dwc2_phy_update: phy init called before and after core reset
-// - dwc2_dcd_int_enable/dwc2_dcd_int_disable
-// - dwc2_remote_wakeup_delay
-
-#if defined(TUP_USBIP_DWC2_STM32)
-  #include "dwc2_stm32.h"
-#elif defined(TUP_USBIP_DWC2_ESP32)
-  #include "dwc2_esp32.h"
-#elif TU_CHECK_MCU(OPT_MCU_GD32VF103)
-  #include "dwc2_gd32.h"
-#elif TU_CHECK_MCU(OPT_MCU_BCM2711, OPT_MCU_BCM2835, OPT_MCU_BCM2837)
-  #include "dwc2_bcm.h"
-#elif TU_CHECK_MCU(OPT_MCU_EFM32GG)
-  #include "dwc2_efm32.h"
-#elif TU_CHECK_MCU(OPT_MCU_XMC4000)
-  #include "dwc2_xmc.h"
-#else
-  #error "Unsupported MCUs"
-#endif
-
-enum {
-  DWC2_CONTROLLER_COUNT = TU_ARRAY_SIZE(_dwc2_controller)
-};
-
-// DWC2 registers
-//#define DWC2_REG(_port)       ((dwc2_regs_t*) _dwc2_controller[_port].reg_base)
-
-TU_ATTR_ALWAYS_INLINE static inline dwc2_regs_t* DWC2_REG(uint8_t rhport) {
-  if (rhport >= DWC2_CONTROLLER_COUNT) {
-    // user mis-configured, ignore and use first controller
-    rhport = 0;
-  }
-  return (dwc2_regs_t*) _dwc2_controller[rhport].reg_base;
-}
+#include "dwc2_common.h"
 
 //--------------------------------------------------------------------+
 // MACRO TYPEDEF CONSTANT ENUM
@@ -94,7 +56,7 @@ static xfer_ctl_t xfer_status[DWC2_EP_MAX][2];
 
 // EP0 transfers are limited to 1 packet - larger sizes has to be split
 static uint16_t ep0_pending[2];  // Index determines direction as tusb_dir_t type
-static uint16_t _dfifo_top;      // top free location in FIFO RAM
+static uint16_t _dfifo_top;      // top free location in DFIFO in words
 
 // Number of IN endpoints active
 static uint8_t _allocated_ep_in_count;
@@ -106,20 +68,10 @@ static bool _sof_en;
 // DMA
 //--------------------------------------------------------------------
 
-TU_ATTR_ALWAYS_INLINE static inline bool dma_enabled(const dwc2_regs_t* dwc2) {
-  #if !CFG_TUD_DWC2_DMA
+TU_ATTR_ALWAYS_INLINE static inline bool dma_device_enabled(const dwc2_regs_t* dwc2) {
   (void) dwc2;
-  return false;
-  #else
   // Internal DMA only
-  return (dwc2->ghwcfg2_bm.arch == GHWCFG2_ARCH_INTERNAL_DMA);
-  #endif
-}
-
-TU_ATTR_ALWAYS_INLINE static inline uint16_t dma_cal_epfifo_base(uint8_t rhport) {
-  // Scatter/Gather DMA mode is not yet supported. Buffer DMA only need 1 words per endpoint direction
-  const dwc2_controller_t* dwc2_controller = &_dwc2_controller[rhport];
-  return dwc2_controller->ep_fifo_size/4 - 2*dwc2_controller->ep_count;
+  return CFG_TUD_DWC2_DMA && dwc2->ghwcfg2_bm.arch == GHWCFG2_ARCH_INTERNAL_DMA;
 }
 
 static void dma_setup_prepare(uint8_t rhport) {
@@ -141,18 +93,8 @@ static void dma_setup_prepare(uint8_t rhport) {
 // Data FIFO
 //--------------------------------------------------------------------+
 
-TU_ATTR_ALWAYS_INLINE static inline void dfifo_flush_tx(dwc2_regs_t* dwc2, uint8_t epnum) {
-  // flush TX fifo and wait for it cleared
-  dwc2->grstctl = GRSTCTL_TXFFLSH | (epnum << GRSTCTL_TXFNUM_Pos);
-  while (dwc2->grstctl & GRSTCTL_TXFFLSH_Msk) {}
-}
-TU_ATTR_ALWAYS_INLINE static inline void dfifo_flush_rx(dwc2_regs_t* dwc2) {
-  // flush RX fifo and wait for it cleared
-  dwc2->grstctl = GRSTCTL_RXFFLSH;
-  while (dwc2->grstctl & GRSTCTL_RXFFLSH_Msk) {}
-}
 
-/* USB Data FIFO Layout
+/* Device Data FIFO scheme
 
   The FIFO is split up into
   - EPInfo: for storing DMA metadata, only required when use DMA. Maximum size is called
@@ -167,11 +109,9 @@ TU_ATTR_ALWAYS_INLINE static inline void dfifo_flush_rx(dwc2_regs_t* dwc2) {
   possible since the free space is located between the RX and TX FIFOs.
 
    ---------------- ep_fifo_size
-  |   EPInfo    |
-  |   for DMA   |
+  |  DxEPIDMAn  |
   |-------------|-- gdfifocfg.EPINFOBASE (max is ghwcfg3.dfifo_depth)
-  | IN FIFO 0   |
-  |  control    |
+  | IN FIFO 0   |       control EP
   |-------------|
   | IN FIFO 1   |
   |-------------|
@@ -190,13 +130,13 @@ TU_ATTR_ALWAYS_INLINE static inline void dfifo_flush_rx(dwc2_regs_t* dwc2) {
   - All EP OUT shared a unique OUT FIFO which uses (for Slave or Buffer DMA, Scatt/Gather DMA use different formula):
     - 13 for setup packets + control words (up to 3 setup packets).
     - 1 for global NAK (not required/used here).
-    - Largest-EPsize / 4 + 1. ( FS: 64 bytes, HS: 512 bytes). Recommended is  "2 x (Largest-EPsize/4) + 1"
+    - Largest-EPsize/4 + 1. ( FS: 64 bytes, HS: 512 bytes). Recommended is  "2 x (Largest-EPsize/4 + 1)"
     - 2 for each used OUT endpoint
 
     Therefore GRXFSIZ = 13 + 1 + 2 x (Largest-EPsize/4 + 1) + 2 x EPOUTnum
 */
 
-TU_ATTR_ALWAYS_INLINE static inline uint16_t calc_grxfsiz(uint16_t largest_ep_size, uint8_t ep_count) {
+TU_ATTR_ALWAYS_INLINE static inline uint16_t calc_device_grxfsiz(uint16_t largest_ep_size, uint8_t ep_count) {
   return 13 + 1 + 2 * ((largest_ep_size / 4) + 1) + 2 * ep_count;
 }
 
@@ -212,7 +152,7 @@ static bool dfifo_alloc(uint8_t rhport, uint8_t ep_addr, uint16_t packet_size) {
   uint16_t fifo_size = tu_div_ceil(packet_size, 4);
   if (dir == TUSB_DIR_OUT) {
     // Calculate required size of RX FIFO
-    uint16_t const new_sz = calc_grxfsiz(4 * fifo_size, ep_count);
+    uint16_t const new_sz = calc_device_grxfsiz(4 * fifo_size, ep_count);
 
     // If size_rx needs to be extended check if there is enough free space
     if (dwc2->grxfsiz < new_sz) {
@@ -227,7 +167,7 @@ static bool dfifo_alloc(uint8_t rhport, uint8_t ep_addr, uint16_t packet_size) {
     }
 
     // If The TXFELVL is configured as half empty, the fifo must be twice the max_size.
-    if ((dwc2->gahbcfg & GAHBCFG_TXFELVL) == 0) {
+    if ((dwc2->gahbcfg & GAHBCFG_TX_FIFO_EPMTY_LVL) == 0) {
       fifo_size *= 2;
     }
 
@@ -248,75 +188,27 @@ static bool dfifo_alloc(uint8_t rhport, uint8_t ep_addr, uint16_t packet_size) {
   return true;
 }
 
-static void dfifo_init(uint8_t rhport) {
+static void dfifo_device_init(uint8_t rhport) {
   const dwc2_controller_t* dwc2_controller = &_dwc2_controller[rhport];
   dwc2_regs_t* dwc2 = DWC2_REG(rhport);
-  dwc2->grxfsiz = calc_grxfsiz(CFG_TUD_ENDPOINT0_SIZE, dwc2_controller->ep_count);
+  dwc2->grxfsiz = calc_device_grxfsiz(CFG_TUD_ENDPOINT0_SIZE, dwc2_controller->ep_count);
 
-  if(dma_enabled(dwc2)) {
-    // DMA use last DFIFO to store metadata
-    _dfifo_top = dma_cal_epfifo_base(rhport);
-  }else {
-    _dfifo_top = dwc2_controller->ep_fifo_size / 4;
+  // Scatter/Gather DMA mode is not yet supported. Buffer DMA only need 1 words per endpoint direction
+  const bool is_dma = dma_device_enabled(dwc2);
+  _dfifo_top = dwc2_controller->ep_fifo_size/4;
+  if (is_dma) {
+    _dfifo_top -= 2 * dwc2_controller->ep_count;
   }
+  dwc2->gdfifocfg = (_dfifo_top << GDFIFOCFG_EPINFOBASE_SHIFT) | _dfifo_top;
 
   // Allocate FIFO for EP0 IN
   dfifo_alloc(rhport, 0x80, CFG_TUD_ENDPOINT0_SIZE);
 }
 
-// Read a single data packet from receive FIFO
-static void dfifo_read_packet(uint8_t rhport, uint8_t* dst, uint16_t len) {
-  (void) rhport;
-
-  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
-  volatile const uint32_t* rx_fifo = dwc2->fifo[0];
-
-  // Reading full available 32 bit words from fifo
-  uint16_t full_words = len >> 2;
-  while (full_words--) {
-    tu_unaligned_write32(dst, *rx_fifo);
-    dst += 4;
-  }
-
-  // Read the remaining 1-3 bytes from fifo
-  uint8_t const bytes_rem = len & 0x03;
-  if (bytes_rem != 0) {
-    uint32_t const tmp = *rx_fifo;
-    dst[0] = tu_u32_byte0(tmp);
-    if (bytes_rem > 1) dst[1] = tu_u32_byte1(tmp);
-    if (bytes_rem > 2) dst[2] = tu_u32_byte2(tmp);
-  }
-}
-
-// Write a single data packet to EPIN FIFO
-static void dfifo_write_packet(uint8_t rhport, uint8_t fifo_num, uint8_t const* src, uint16_t len) {
-  (void) rhport;
-
-  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
-  volatile uint32_t* tx_fifo = dwc2->fifo[fifo_num];
-
-  // Pushing full available 32 bit words to fifo
-  uint16_t full_words = len >> 2;
-  while (full_words--) {
-    *tx_fifo = tu_unaligned_read32(src);
-    src += 4;
-  }
-
-  // Write the remaining 1-3 bytes into fifo
-  uint8_t const bytes_rem = len & 0x03;
-  if (bytes_rem) {
-    uint32_t tmp_word = src[0];
-    if (bytes_rem > 1) tmp_word |= (src[1] << 8);
-    if (bytes_rem > 2) tmp_word |= (src[2] << 16);
-
-    *tx_fifo = tmp_word;
-  }
-}
 
 //--------------------------------------------------------------------
 // Endpoint
 //--------------------------------------------------------------------
-
 static void edpt_activate(uint8_t rhport, tusb_desc_endpoint_t const * p_endpoint_desc) {
   dwc2_regs_t* dwc2 = DWC2_REG(rhport);
   uint8_t const epnum = tu_edpt_number(p_endpoint_desc->bEndpointAddress);
@@ -421,7 +313,7 @@ static void bus_reset(uint8_t rhport) {
   dwc2->diepmsk = DIEPMSK_TOM | DIEPMSK_XFRCM;
 
   // 4. Set up DFIFO
-  dfifo_init(rhport);
+  dfifo_device_init(rhport);
 
   // 5. Reset device address
   dwc2->dcfg &= ~DCFG_DAD_Msk;
@@ -433,7 +325,7 @@ static void bus_reset(uint8_t rhport) {
   xfer_status[0][TUSB_DIR_OUT].max_size = 64;
   xfer_status[0][TUSB_DIR_IN].max_size = 64;
 
-  if(dma_enabled(dwc2)) {
+  if(dma_device_enabled(dwc2)) {
     dma_setup_prepare(rhport);
   } else {
     dwc2->epout[0].doeptsiz |= (3 << DOEPTSIZ_STUPCNT_Pos);
@@ -463,9 +355,9 @@ static void edpt_schedule_packets(uint8_t rhport, uint8_t const epnum, uint8_t c
   if (dir == TUSB_DIR_IN) {
     // A full IN transfer (multiple packets, possibly) triggers XFRC.
     dep->dieptsiz = (num_packets << DIEPTSIZ_PKTCNT_Pos) |
-                           ((total_bytes << DIEPTSIZ_XFRSIZ_Pos) & DIEPTSIZ_XFRSIZ_Msk);
+                    ((total_bytes << DIEPTSIZ_XFRSIZ_Pos) & DIEPTSIZ_XFRSIZ_Msk);
 
-    if(dma_enabled(dwc2)) {
+    if(dma_device_enabled(dwc2)) {
       dep->diepdma = (uintptr_t)xfer->buffer;
 
       // For ISO endpoint set correct odd/even bit for next frame.
@@ -503,7 +395,7 @@ static void edpt_schedule_packets(uint8_t rhport, uint8_t const epnum, uint8_t c
       dep->doepctl |= (odd_frame_now ? DOEPCTL_SD0PID_SEVNFRM_Msk : DOEPCTL_SODDFRM_Msk);
     }
 
-    if(dma_enabled(dwc2)) {
+    if(dma_device_enabled(dwc2)) {
       dep->doepdma = (uintptr_t)xfer->buffer;
     }
 
@@ -511,174 +403,41 @@ static void edpt_schedule_packets(uint8_t rhport, uint8_t const epnum, uint8_t c
   }
 }
 
-/*------------------------------------------------------------------*/
-/* Controller API
- *------------------------------------------------------------------*/
-
-static void reset_core(dwc2_regs_t* dwc2) {
-  // reset core
-  dwc2->grstctl |= GRSTCTL_CSRST;
-
-  // wait for reset bit is cleared
-  // TODO version 4.20a should wait for RESET DONE mask
-  while (dwc2->grstctl & GRSTCTL_CSRST) {}
-
-  // wait for AHB master IDLE
-  while (!(dwc2->grstctl & GRSTCTL_AHBIDL)) {}
-
-  // wait for device mode ?
-}
-
-static bool phy_hs_supported(dwc2_regs_t* dwc2) {
-  (void) dwc2;
-
-#if !TUD_OPT_HIGH_SPEED
-  return false;
-#else
-  return dwc2->ghwcfg2_bm.hs_phy_type != GHWCFG2_HSPHY_NOT_SUPPORTED;
-#endif
-}
-
-static void phy_fs_init(dwc2_regs_t* dwc2) {
-  TU_LOG(DWC2_DEBUG, "Fullspeed PHY init\r\n");
-
-  // Select FS PHY
-  dwc2->gusbcfg |= GUSBCFG_PHYSEL;
-
-  // MCU specific PHY init before reset
-  dwc2_phy_init(dwc2, GHWCFG2_HSPHY_NOT_SUPPORTED);
-
-  // Reset core after selecting PHY
-  reset_core(dwc2);
-
-  // USB turnaround time is critical for certification where long cables and 5-Hubs are used.
-  // So if you need the AHB to run at less than 30 MHz, and if USB turnaround time is not critical,
-  // these bits can be programmed to a larger value. Default is 5
-  dwc2->gusbcfg = (dwc2->gusbcfg & ~GUSBCFG_TRDT_Msk) | (5u << GUSBCFG_TRDT_Pos);
-
-  // MCU specific PHY update post reset
-  dwc2_phy_update(dwc2, GHWCFG2_HSPHY_NOT_SUPPORTED);
-
-  // set max speed
-  dwc2->dcfg = (dwc2->dcfg & ~DCFG_DSPD_Msk) | (DCFG_DSPD_FS << DCFG_DSPD_Pos);
-}
-
-static void phy_hs_init(dwc2_regs_t* dwc2) {
-  uint32_t gusbcfg = dwc2->gusbcfg;
-
-  // De-select FS PHY
-  gusbcfg &= ~GUSBCFG_PHYSEL;
-
-  if (dwc2->ghwcfg2_bm.hs_phy_type == GHWCFG2_HSPHY_ULPI) {
-    TU_LOG(DWC2_DEBUG, "Highspeed ULPI PHY init\r\n");
-
-    // Select ULPI
-    gusbcfg |= GUSBCFG_ULPI_UTMI_SEL;
-
-    // ULPI 8-bit interface, single data rate
-    gusbcfg &= ~(GUSBCFG_PHYIF16 | GUSBCFG_DDRSEL);
-
-    // default internal VBUS Indicator and Drive
-    gusbcfg &= ~(GUSBCFG_ULPIEVBUSD | GUSBCFG_ULPIEVBUSI);
-
-    // Disable FS/LS ULPI
-    gusbcfg &= ~(GUSBCFG_ULPIFSLS | GUSBCFG_ULPICSM);
-  } else {
-    TU_LOG(DWC2_DEBUG, "Highspeed UTMI+ PHY init\r\n");
-
-    // Select UTMI+ with 8-bit interface
-    gusbcfg &= ~(GUSBCFG_ULPI_UTMI_SEL | GUSBCFG_PHYIF16);
-
-    // Set 16-bit interface if supported
-    if (dwc2->ghwcfg4_bm.phy_data_width) {
-      gusbcfg |= GUSBCFG_PHYIF16;
-    }
-  }
-
-  // Apply config
-  dwc2->gusbcfg = gusbcfg;
-
-  // mcu specific phy init
-  dwc2_phy_init(dwc2, dwc2->ghwcfg2_bm.hs_phy_type);
-
-  // Reset core after selecting PHY
-  reset_core(dwc2);
-
-  // Set turn-around, must after core reset otherwise it will be clear
-  // - 9 if using 8-bit PHY interface
-  // - 5 if using 16-bit PHY interface
-  gusbcfg &= ~GUSBCFG_TRDT_Msk;
-  gusbcfg |= (dwc2->ghwcfg4_bm.phy_data_width ? 5u : 9u) << GUSBCFG_TRDT_Pos;
-  dwc2->gusbcfg = gusbcfg;
-
-  // MCU specific PHY update post reset
-  dwc2_phy_update(dwc2, dwc2->ghwcfg2_bm.hs_phy_type);
-
-  // Set max speed
-  uint32_t dcfg = dwc2->dcfg;
-  dcfg &= ~DCFG_DSPD_Msk;
-  dcfg |= DCFG_DSPD_HS << DCFG_DSPD_Pos;
-
-  // XCVRDLY: transceiver delay between xcvr_sel and txvalid during device chirp is required
-  // when using with some PHYs such as USB334x (USB3341, USB3343, USB3346, USB3347)
-  if (dwc2->ghwcfg2_bm.hs_phy_type == GHWCFG2_HSPHY_ULPI) {
-    dcfg |= DCFG_XCVRDLY;
-  }
-
-  dwc2->dcfg = dcfg;
-}
-
-static bool check_dwc2(dwc2_regs_t* dwc2) {
-#if CFG_TUSB_DEBUG >= DWC2_DEBUG
-  // print guid, gsnpsid, ghwcfg1, ghwcfg2, ghwcfg3, ghwcfg4
-  // Run 'python dwc2_info.py' and check dwc2_info.md for bit-field value and comparison with other ports
-  volatile uint32_t const* p = (volatile uint32_t const*) &dwc2->guid;
-  TU_LOG1("guid, gsnpsid, ghwcfg1, ghwcfg2, ghwcfg3, ghwcfg4\r\n");
-  for (size_t i = 0; i < 5; i++) {
-    TU_LOG1("0x%08" PRIX32 ", ", p[i]);
-  }
-  TU_LOG1("0x%08" PRIX32 "\r\n", p[5]);
-#endif
-
-  // For some reason: GD32VF103 snpsid and all hwcfg register are always zero (skip it)
-  (void) dwc2;
-#if !TU_CHECK_MCU(OPT_MCU_GD32VF103)
-  uint32_t const gsnpsid = dwc2->gsnpsid & GSNPSID_ID_MASK;
-  TU_ASSERT(gsnpsid == DWC2_OTG_ID || gsnpsid == DWC2_FS_IOT_ID || gsnpsid == DWC2_HS_IOT_ID);
-#endif
-
-  return true;
-}
-
+//--------------------------------------------------------------------
+// Controller API
+//--------------------------------------------------------------------
 bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
-  (void) rhport;
   (void) rh_init;
-  // Programming model begins in the last section of the chapter on the USB
-  // peripheral in each Reference Manual.
   dwc2_regs_t* dwc2 = DWC2_REG(rhport);
 
-  // Check Synopsys ID register, failed if controller clock/power is not enabled
-  TU_ASSERT(check_dwc2(dwc2));
-  dcd_disconnect(rhport);
+  // Core Initialization
+  const bool is_highspeed = dwc2_core_is_highspeed(dwc2, TUSB_ROLE_DEVICE);
+  TU_ASSERT(dwc2_core_init(rhport, is_highspeed));
 
-  if (phy_hs_supported(dwc2)) {
-    phy_hs_init(dwc2); // Highspeed
+  if (dma_device_enabled(dwc2)) {
+    // DMA seems to be only settable after a core reset, and not possible to switch on-the-fly
+    dwc2->gahbcfg |= GAHBCFG_DMAEN | GAHBCFG_HBSTLEN_2;
   } else {
-    phy_fs_init(dwc2); // core does not support highspeed or hs phy is not present
+    dwc2->gintmsk |= GINTSTS_RXFLVL;
   }
 
-  // Restart PHY clock
-  dwc2->pcgctl &= ~(PCGCTL_STOPPCLK | PCGCTL_GATEHCLK | PCGCTL_PWRCLMP | PCGCTL_RSTPDWNMODULE);
+  // Device Initialization
+  dcd_disconnect(rhport);
 
-  /* Set HS/FS Timeout Calibration to 7 (max available value).
-   * The number of PHY clocks that the application programs in
-   * this field is added to the high/full speed interpacket timeout
-   * duration in the core to account for any additional delays
-   * introduced by the PHY. This can be required, because the delay
-   * introduced by the PHY in generating the linestate condition
-   * can vary from one PHY to another.
-   */
-  dwc2->gusbcfg |= (7ul << GUSBCFG_TOCAL_Pos);
+  // Set device max speed
+  uint32_t dcfg = dwc2->dcfg & ~DCFG_DSPD_Msk;
+  if (is_highspeed) {
+    dcfg |= DCFG_DSPD_HS << DCFG_DSPD_Pos;
+
+    // XCVRDLY: transceiver delay between xcvr_sel and txvalid during device chirp is required
+    // when using with some PHYs such as USB334x (USB3341, USB3343, USB3346, USB3347)
+    if (dwc2->ghwcfg2_bm.hs_phy_type == GHWCFG2_HSPHY_ULPI) {
+      dcfg |= DCFG_XCVRDLY;
+    }
+  }else {
+    dcfg |= DCFG_DSPD_FS << DCFG_DSPD_Pos;
+  }
+  dwc2->dcfg = dcfg;
 
   // Force device mode
   dwc2->gusbcfg = (dwc2->gusbcfg & ~GUSBCFG_FHMOD) | GUSBCFG_FDMOD;
@@ -686,48 +445,19 @@ bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   // Clear A override, force B Valid
   dwc2->gotgctl = (dwc2->gotgctl & ~GOTGCTL_AVALOEN) | GOTGCTL_BVALOEN | GOTGCTL_BVALOVAL;
 
-  // If USB host misbehaves during status portion of control xfer
-  // (non zero-length packet), send STALL back and discard.
+  // If USB host misbehaves during status portion of control xfer (non zero-length packet), send STALL back and discard
   dwc2->dcfg |= DCFG_NZLSOHSK;
 
-  dfifo_flush_tx(dwc2, 0x10); // all tx fifo
-  dfifo_flush_rx(dwc2);
-
-  // Clear all interrupts
-  uint32_t int_mask = dwc2->gintsts;
-  dwc2->gintsts |= int_mask;
-  int_mask = dwc2->gotgint;
-  dwc2->gotgint |= int_mask;
-
-  // Required as part of core initialization.
-  dwc2->gintmsk = GINTMSK_OTGINT | GINTMSK_USBSUSPM | GINTMSK_USBRST | GINTMSK_ENUMDNEM | GINTMSK_WUIM;
-
-  // Configure TX FIFO empty level for interrupt. Default is complete empty
-  dwc2->gahbcfg |= GAHBCFG_TXFELVL;
-
-  if (dma_enabled(dwc2)) {
-    const uint16_t epinfo_base = dma_cal_epfifo_base(rhport);
-    dwc2->gdfifocfg = (epinfo_base << GDFIFOCFG_EPINFOBASE_SHIFT) | epinfo_base;
+  // Enable required interrupts
+  dwc2->gintmsk |= GINTMSK_OTGINT | GINTMSK_USBSUSPM | GINTMSK_USBRST | GINTMSK_ENUMDNEM | GINTMSK_WUIM;
 
-    // DMA seems to be only settable after a core reset
-    dwc2->gahbcfg |= GAHBCFG_DMAEN | GAHBCFG_HBSTLEN_2;
-  }else {
-    dwc2->gintmsk |= GINTMSK_RXFLVLM;
-  }
-
-  // Enable global interrupt
-  dwc2->gahbcfg |= GAHBCFG_GINT;
-
-  // make sure we are in device mode
-//  TU_ASSERT(!(dwc2->gintsts & GINTSTS_CMOD), );
-
-//  TU_LOG_HEX(DWC2_DEBUG, dwc2->gotgctl);
-//  TU_LOG_HEX(DWC2_DEBUG, dwc2->gusbcfg);
-//  TU_LOG_HEX(DWC2_DEBUG, dwc2->dcfg);
-//  TU_LOG_HEX(DWC2_DEBUG, dwc2->gahbcfg);
+  // TX FIFO empty level for interrupt is complete empty
+  uint32_t gahbcfg = dwc2->gahbcfg;
+  gahbcfg |= GAHBCFG_TX_FIFO_EPMTY_LVL;
+  gahbcfg |= GAHBCFG_GINT; // Enable global interrupt
+  dwc2->gahbcfg = gahbcfg;
 
   dcd_connect(rhport);
-
   return true;
 }
 
@@ -847,7 +577,7 @@ void dcd_edpt_close_all(uint8_t rhport) {
   dfifo_flush_tx(dwc2, 0x10); // all tx fifo
   dfifo_flush_rx(dwc2);
 
-  dfifo_init(rhport); // re-init dfifo
+  dfifo_device_init(rhport); // re-init dfifo
 }
 
 bool dcd_edpt_iso_alloc(uint8_t rhport, uint8_t ep_addr, uint16_t largest_packet_size) {
@@ -878,11 +608,10 @@ bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer, uint16_t to
     // Schedule the first transaction for EP0 transfer
     edpt_schedule_packets(rhport, epnum, dir, 1, ep0_pending[dir]);
   } else {
-    uint16_t num_packets = (total_bytes / xfer->max_size);
-    uint16_t const short_packet_size = total_bytes % xfer->max_size;
-
-    // Zero-size packet is special case.
-    if ((short_packet_size > 0) || (total_bytes == 0)) num_packets++;
+    uint16_t num_packets = tu_div_ceil(total_bytes, xfer->max_size);
+    if (num_packets == 0) {
+      num_packets = 1; // zero length packet still count as 1
+    }
 
     // Schedule packets to be sent within interrupt
     edpt_schedule_packets(rhport, epnum, dir, num_packets, total_bytes);
@@ -926,8 +655,9 @@ void dcd_edpt_close(uint8_t rhport, uint8_t ep_addr) {
 }
 
 void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
   edpt_disable(rhport, ep_addr, true);
-  if((tu_edpt_number(ep_addr) == 0) && dma_enabled(DWC2_REG(rhport))) {
+  if((tu_edpt_number(ep_addr) == 0) && dma_device_enabled(dwc2)) {
     dma_setup_prepare(rhport);
   }
 }
@@ -950,16 +680,15 @@ void dcd_edpt_clear_stall(uint8_t rhport, uint8_t ep_addr) {
 // Process shared receive FIFO, this interrupt is only used in Slave mode
 static void handle_rxflvl_irq(uint8_t rhport) {
   dwc2_regs_t* dwc2 = DWC2_REG(rhport);
-  volatile uint32_t const* rx_fifo = dwc2->fifo[0];
+  const volatile uint32_t* rx_fifo = dwc2->fifo[0];
 
   // Pop control word off FIFO
-  uint32_t const grxstsp = dwc2->grxstsp;
-  uint8_t const pktsts = (grxstsp & GRXSTSP_PKTSTS_Msk) >> GRXSTSP_PKTSTS_Pos;
-  uint8_t const epnum = (grxstsp & GRXSTSP_EPNUM_Msk) >> GRXSTSP_EPNUM_Pos;
-  uint16_t const bcnt = (grxstsp & GRXSTSP_BCNT_Msk) >> GRXSTSP_BCNT_Pos;
+  const dwc2_grxstsp_t grxstsp_bm = dwc2->grxstsp_bm;
+  const uint8_t epnum = grxstsp_bm.ep_ch_num;
+  const uint16_t byte_count = grxstsp_bm.byte_count;
   dwc2_epout_t* epout = &dwc2->epout[epnum];
 
-  switch (pktsts) {
+  switch (grxstsp_bm.packet_status) {
     // Global OUT NAK: do nothing
     case GRXSTS_PKTSTS_GLOBALOUTNAK:
       break;
@@ -984,18 +713,18 @@ static void handle_rxflvl_irq(uint8_t rhport) {
       // Read packet off RxFIFO
       if (xfer->ff) {
         // Ring buffer
-        tu_fifo_write_n_const_addr_full_words(xfer->ff, (const void*) (uintptr_t) rx_fifo, bcnt);
+        tu_fifo_write_n_const_addr_full_words(xfer->ff, (const void*) (uintptr_t) rx_fifo, byte_count);
       } else {
         // Linear buffer
-        dfifo_read_packet(rhport, xfer->buffer, bcnt);
+        dfifo_read_packet(dwc2, xfer->buffer, byte_count);
 
         // Increment pointer to xfer data
-        xfer->buffer += bcnt;
+        xfer->buffer += byte_count;
       }
 
-      // Truncate transfer length in case of short packet
-      if (bcnt < xfer->max_size) {
-        xfer->total_len -= (epout->doeptsiz & DOEPTSIZ_XFRSIZ_Msk) >> DOEPTSIZ_XFRSIZ_Pos;
+      // short packet, minus remaining bytes (xfer_size)
+      if (byte_count < xfer->max_size) {
+        xfer->total_len -= epout->doeptsiz_bm.xfer_size;
         if (epnum == 0) {
           xfer->total_len -= ep0_pending[TUSB_DIR_OUT];
           ep0_pending[TUSB_DIR_OUT] = 0;
@@ -1044,7 +773,7 @@ static void handle_epout_irq(uint8_t rhport) {
       if (doepint & DOEPINT_SETUP) {
         epout->doepint = DOEPINT_SETUP;
 
-        if(dma_enabled(dwc2)) {
+        if(dma_device_enabled(dwc2)) {
           dma_setup_prepare(rhport);
         }
 
@@ -1060,7 +789,7 @@ static void handle_epout_irq(uint8_t rhport) {
         if (!(doepint & (DOEPINT_SETUP | DOEPINT_STPKTRX | DOEPINT_STSPHSRX))) {
           xfer_ctl_t* xfer = XFER_CTL_BASE(epnum, TUSB_DIR_OUT);
 
-          if(dma_enabled(dwc2)) {
+          if(dma_device_enabled(dwc2)) {
             if ((epnum == 0) && ep0_pending[TUSB_DIR_OUT]) {
               // EP0 can only handle one packet Schedule another packet to be received.
               edpt_schedule_packets(rhport, epnum, TUSB_DIR_OUT, 1, ep0_pending[TUSB_DIR_OUT]);
@@ -1092,8 +821,7 @@ static void handle_epout_irq(uint8_t rhport) {
 
 static void handle_epin_irq(uint8_t rhport) {
   dwc2_regs_t* dwc2 = DWC2_REG(rhport);
-  uint8_t const ep_count = _dwc2_controller[rhport].ep_count;
-  dwc2_epin_t* epin = dwc2->epin;
+  const uint8_t ep_count = _dwc2_controller[rhport].ep_count;
 
   // DAINT for a given EP clears when DIEPINTx is cleared.
   // IEPINT will be cleared when DAINT's out bits are cleared.
@@ -1101,16 +829,17 @@ static void handle_epin_irq(uint8_t rhport) {
     if (dwc2->daint & TU_BIT(DAINT_IEPINT_Pos + n)) {
       // IN XFER complete (entire xfer).
       xfer_ctl_t* xfer = XFER_CTL_BASE(n, TUSB_DIR_IN);
+      dwc2_epin_t* epin = &dwc2->epin[n];
 
-      if (epin[n].diepint & DIEPINT_XFRC) {
-        epin[n].diepint = DIEPINT_XFRC;
+      if (epin->diepint & DIEPINT_XFRC) {
+        epin->diepint = DIEPINT_XFRC;
 
         // EP0 can only handle one packet
         if ((n == 0) && ep0_pending[TUSB_DIR_IN]) {
           // Schedule another packet to be transmitted.
           edpt_schedule_packets(rhport, n, TUSB_DIR_IN, 1, ep0_pending[TUSB_DIR_IN]);
         } else {
-          if((n == 0) && dma_enabled(dwc2)) {
+          if((n == 0) && dma_device_enabled(dwc2)) {
             dma_setup_prepare(rhport);
           }
           dcd_event_xfer_complete(rhport, n | TUSB_DIR_IN_MASK, xfer->total_len, XFER_RESULT_SUCCESS, true);
@@ -1118,39 +847,38 @@ static void handle_epin_irq(uint8_t rhport) {
       }
 
       // XFER FIFO empty
-      if ((epin[n].diepint & DIEPINT_TXFE) && (dwc2->diepempmsk & (1 << n))) {
+      if ((epin->diepint & DIEPINT_TXFE) && (dwc2->diepempmsk & (1 << n))) {
         // diepint's TXFE bit is read-only, software cannot clear it.
         // It will only be cleared by hardware when written bytes is more than
         // - 64 bytes or
-        // - Half of TX FIFO size (configured by DIEPTXF)
-
-        uint16_t remaining_packets = (epin[n].dieptsiz & DIEPTSIZ_PKTCNT_Msk) >> DIEPTSIZ_PKTCNT_Pos;
+        // - Half/Empty of TX FIFO size (configured by GAHBCFG.TXFELVL)
+        const uint16_t remain_packets = epin->dieptsiz_bm.packet_count;
 
         // Process every single packet (only whole packets can be written to fifo)
-        for (uint16_t i = 0; i < remaining_packets; i++) {
-          uint16_t const remaining_bytes = (epin[n].dieptsiz & DIEPTSIZ_XFRSIZ_Msk) >> DIEPTSIZ_XFRSIZ_Pos;
+        for (uint16_t i = 0; i < remain_packets; i++) {
+          const uint16_t remain_bytes = (uint16_t) epin->dieptsiz_bm.xfer_size;
 
           // Packet can not be larger than ep max size
-          uint16_t const packet_size = tu_min16(remaining_bytes, xfer->max_size);
+          const uint16_t xact_bytes = tu_min16(remain_bytes, xfer->max_size);
 
           // It's only possible to write full packets into FIFO. Therefore DTXFSTS register of current
           // EP has to be checked if the buffer can take another WHOLE packet
-          if (packet_size > ((epin[n].dtxfsts & DTXFSTS_INEPTFSAV_Msk) << 2)) break;
+          if (xact_bytes > ((epin->dtxfsts & DTXFSTS_INEPTFSAV_Msk) << 2)) {
+            break;
+          }
 
           // Push packet to Tx-FIFO
           if (xfer->ff) {
             volatile uint32_t* tx_fifo = dwc2->fifo[n];
-            tu_fifo_read_n_const_addr_full_words(xfer->ff, (void*) (uintptr_t) tx_fifo, packet_size);
+            tu_fifo_read_n_const_addr_full_words(xfer->ff, (void*) (uintptr_t) tx_fifo, xact_bytes);
           } else {
-            dfifo_write_packet(rhport, n, xfer->buffer, packet_size);
-
-            // Increment pointer to xfer data
-            xfer->buffer += packet_size;
+            dfifo_write_packet(dwc2, n, xfer->buffer, xact_bytes);
+            xfer->buffer += xact_bytes;
           }
         }
 
         // Turn off TXFE if all bytes are written.
-        if (((epin[n].dieptsiz & DIEPTSIZ_XFRSIZ_Msk) >> DIEPTSIZ_XFRSIZ_Pos) == 0) {
+        if (epin->dieptsiz_bm.xfer_size == 0) {
           dwc2->diepempmsk &= ~(1 << n);
         }
       }
@@ -1160,21 +888,11 @@ static void handle_epin_irq(uint8_t rhport) {
 
 /* Interrupt Hierarchy
 
-   DxEPMSK.XferComplMsk     DxEPINTn.XferCompl
-         |                       |
-         +---------- AND --------+
-                      |
-     DAINT.xEPnInt            DAINTMSK.xEPnMsk
-         |                       |
-         +---------- AND --------+
-                      |
-    GINTSTS.xEPInt         GINTMSK.xEPIntMsk
-         |                       |
-         +---------- AND --------+
-                      |
-             GAHBCFG.GblIntrMsk
-                      |
-                    IRQn
+                DxEPINTn
+                   |
+                DAINT.xEPn
+                   |
+     GINTSTS:    xEPInt
 
   Note: when OTG_MULTI_PROC_INTRPT = 1, Device Each endpoint interrupt deachint/deachmsk/diepeachmsk/doepeachmsk
   are combined to generate dedicated interrupt line for each endpoint.
diff --git a/src/portable/synopsys/dwc2/dwc2_common.c b/src/portable/synopsys/dwc2/dwc2_common.c
new file mode 100644
index 000000000..4d62cf3c6
--- /dev/null
+++ b/src/portable/synopsys/dwc2/dwc2_common.c
@@ -0,0 +1,302 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2024 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#include "tusb_option.h"
+
+#define DWC2_COMMON_DEBUG   2
+
+#if defined(TUP_USBIP_DWC2) && (CFG_TUH_ENABLED || CFG_TUD_ENABLED)
+
+#if CFG_TUD_ENABLED
+#include "device/dcd.h"
+#endif
+
+#if CFG_TUH_ENABLED
+#include "host/hcd.h"
+#endif
+
+#include "dwc2_common.h"
+
+//--------------------------------------------------------------------
+//
+//--------------------------------------------------------------------
+static void reset_core(dwc2_regs_t* dwc2) {
+  // reset core
+  dwc2->grstctl |= GRSTCTL_CSRST;
+
+  if ((dwc2->gsnpsid & DWC2_CORE_REV_MASK) < (DWC2_CORE_REV_4_20a & DWC2_CORE_REV_MASK)) {
+    // prior v42.0 CSRST is self-clearing
+    while (dwc2->grstctl & GRSTCTL_CSRST) {}
+  } else {
+    // From v4.20a CSRST bit is write only, CSRT_DONE (w1c) is introduced for checking.
+    // CSRST must also be explicitly cleared
+    while (!(dwc2->grstctl & GRSTCTL_CSRST_DONE)) {}
+    dwc2->grstctl =  (dwc2->grstctl & ~GRSTCTL_CSRST) | GRSTCTL_CSRST_DONE;
+  }
+
+  while (!(dwc2->grstctl & GRSTCTL_AHBIDL)) {} // wait for AHB master IDLE
+}
+
+static void phy_fs_init(dwc2_regs_t* dwc2) {
+  TU_LOG(DWC2_COMMON_DEBUG, "Fullspeed PHY init\r\n");
+
+  uint32_t gusbcfg = dwc2->gusbcfg;
+
+  // Select FS PHY
+  gusbcfg |= GUSBCFG_PHYSEL;
+  dwc2->gusbcfg = gusbcfg;
+
+  // MCU specific PHY init before reset
+  dwc2_phy_init(dwc2, GHWCFG2_HSPHY_NOT_SUPPORTED);
+
+  // Reset core after selecting PHY
+  reset_core(dwc2);
+
+  // USB turnaround time is critical for certification where long cables and 5-Hubs are used.
+  // So if you need the AHB to run at less than 30 MHz, and if USB turnaround time is not critical,
+  // these bits can be programmed to a larger value. Default is 5
+  gusbcfg &= ~GUSBCFG_TRDT_Msk;
+  gusbcfg |= 5u << GUSBCFG_TRDT_Pos;
+  dwc2->gusbcfg = gusbcfg;
+
+  // MCU specific PHY update post reset
+  dwc2_phy_update(dwc2, GHWCFG2_HSPHY_NOT_SUPPORTED);
+}
+
+static void phy_hs_init(dwc2_regs_t* dwc2) {
+  uint32_t gusbcfg = dwc2->gusbcfg;
+
+  // De-select FS PHY
+  gusbcfg &= ~GUSBCFG_PHYSEL;
+
+  if (dwc2->ghwcfg2_bm.hs_phy_type == GHWCFG2_HSPHY_ULPI) {
+    TU_LOG(DWC2_COMMON_DEBUG, "Highspeed ULPI PHY init\r\n");
+
+    // Select ULPI PHY (external)
+    gusbcfg |= GUSBCFG_ULPI_UTMI_SEL;
+
+    // ULPI is always 8-bit interface
+    gusbcfg &= ~GUSBCFG_PHYIF16;
+
+    // ULPI select single data rate
+    gusbcfg &= ~GUSBCFG_DDRSEL;
+
+    // default internal VBUS Indicator and Drive
+    gusbcfg &= ~(GUSBCFG_ULPIEVBUSD | GUSBCFG_ULPIEVBUSI);
+
+    // Disable FS/LS ULPI
+    gusbcfg &= ~(GUSBCFG_ULPIFSLS | GUSBCFG_ULPICSM);
+  } else {
+    TU_LOG(DWC2_COMMON_DEBUG, "Highspeed UTMI+ PHY init\r\n");
+
+    // Select UTMI+ PHY (internal)
+    gusbcfg &= ~GUSBCFG_ULPI_UTMI_SEL;
+
+    // Set 16-bit interface if supported
+    if (dwc2->ghwcfg4_bm.phy_data_width) {
+      gusbcfg |= GUSBCFG_PHYIF16; // 16 bit
+    } else {
+      gusbcfg &= ~GUSBCFG_PHYIF16; // 8 bit
+    }
+  }
+
+  // Apply config
+  dwc2->gusbcfg = gusbcfg;
+
+  // mcu specific phy init
+  dwc2_phy_init(dwc2, dwc2->ghwcfg2_bm.hs_phy_type);
+
+  // Reset core after selecting PHY
+  reset_core(dwc2);
+
+  // Set turn-around, must after core reset otherwise it will be clear
+  // - 9 if using 8-bit PHY interface
+  // - 5 if using 16-bit PHY interface
+  gusbcfg &= ~GUSBCFG_TRDT_Msk;
+  gusbcfg |= (dwc2->ghwcfg4_bm.phy_data_width ? 5u : 9u) << GUSBCFG_TRDT_Pos;
+  dwc2->gusbcfg = gusbcfg;
+
+  // MCU specific PHY update post reset
+  dwc2_phy_update(dwc2, dwc2->ghwcfg2_bm.hs_phy_type);
+}
+
+static bool check_dwc2(dwc2_regs_t* dwc2) {
+#if CFG_TUSB_DEBUG >= DWC2_COMMON_DEBUG
+  // print guid, gsnpsid, ghwcfg1, ghwcfg2, ghwcfg3, ghwcfg4
+  // Run 'python dwc2_info.py' and check dwc2_info.md for bit-field value and comparison with other ports
+  volatile uint32_t const* p = (volatile uint32_t const*) &dwc2->guid;
+  TU_LOG1("guid, gsnpsid, ghwcfg1, ghwcfg2, ghwcfg3, ghwcfg4\r\n");
+  for (size_t i = 0; i < 5; i++) {
+    TU_LOG1("0x%08" PRIX32 ", ", p[i]);
+  }
+  TU_LOG1("0x%08" PRIX32 "\r\n", p[5]);
+#endif
+
+  // For some reason: GD32VF103 gsnpsid and all hwcfg register are always zero (skip it)
+  (void)dwc2;
+#if !TU_CHECK_MCU(OPT_MCU_GD32VF103)
+  enum { GSNPSID_ID_MASK = TU_GENMASK(31, 16) };
+  const uint32_t gsnpsid = dwc2->gsnpsid & GSNPSID_ID_MASK;
+  TU_ASSERT(gsnpsid == DWC2_OTG_ID || gsnpsid == DWC2_FS_IOT_ID || gsnpsid == DWC2_HS_IOT_ID);
+#endif
+
+  return true;
+}
+
+//--------------------------------------------------------------------
+//
+//--------------------------------------------------------------------
+bool dwc2_core_is_highspeed(dwc2_regs_t* dwc2, tusb_role_t role) {
+  (void)dwc2;
+
+#if CFG_TUD_ENABLED
+  if (role == TUSB_ROLE_DEVICE && !TUD_OPT_HIGH_SPEED) {
+    return false;
+  }
+#endif
+#if CFG_TUH_ENABLED
+  if (role == TUSB_ROLE_HOST && !TUH_OPT_HIGH_SPEED) {
+    return false;
+  }
+#endif
+
+  return dwc2->ghwcfg2_bm.hs_phy_type != GHWCFG2_HSPHY_NOT_SUPPORTED;
+}
+
+/* dwc2 has several PHYs option
+ * - UTMI+ is internal highspeed PHY, clock can be 30 Mhz (8-bit) or 60 Mhz (16-bit)
+ * - ULPI is external highspeed PHY, clock is 60Mhz with only 8-bit interface
+ * - Dedicated FS PHY is internal with clock 48Mhz.
+ *
+ * In addition, UTMI+/ULPI can be shared to run at fullspeed mode with 48Mhz
+ *
+*/
+bool dwc2_core_init(uint8_t rhport, bool is_highspeed) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+
+  // Check Synopsys ID register, failed if controller clock/power is not enabled
+  TU_ASSERT(check_dwc2(dwc2));
+
+  // disable global interrupt
+  dwc2->gahbcfg &= ~GAHBCFG_GINT;
+
+  if (is_highspeed) {
+    phy_hs_init(dwc2);
+  } else {
+    phy_fs_init(dwc2);
+  }
+
+  /* Set HS/FS Timeout Calibration to 7 (max available value).
+   * The number of PHY clocks that the application programs in
+   * this field is added to the high/full speed interpacket timeout
+   * duration in the core to account for any additional delays
+   * introduced by the PHY. This can be required, because the delay
+   * introduced by the PHY in generating the linestate condition
+   * can vary from one PHY to another. */
+  dwc2->gusbcfg |= (7ul << GUSBCFG_TOCAL_Pos);
+
+  // Enable PHY clock TODO stop/gate clock when suspended mode
+  dwc2->pcgcctl &= ~(PCGCCTL_STOPPCLK | PCGCCTL_GATEHCLK | PCGCCTL_PWRCLMP | PCGCCTL_RSTPDWNMODULE);
+
+  dfifo_flush_tx(dwc2, 0x10); // all tx fifo
+  dfifo_flush_rx(dwc2);
+
+  // Clear pending and disable all interrupts
+  dwc2->gintsts = 0xFFFFFFFFU;
+  dwc2->gotgint = 0xFFFFFFFFU;
+  dwc2->gintmsk = 0;
+
+  return true;
+}
+
+// void dwc2_core_handle_common_irq(uint8_t rhport, bool in_isr) {
+//   (void) in_isr;
+//   dwc2_regs_t * const dwc2 = DWC2_REG(rhport);
+//   const uint32_t int_mask = dwc2->gintmsk;
+//   const uint32_t int_status = dwc2->gintsts & int_mask;
+//
+//   // Device disconnect
+//   if (int_status & GINTSTS_DISCINT) {
+//     dwc2->gintsts = GINTSTS_DISCINT;
+//   }
+//
+// }
+
+//--------------------------------------------------------------------
+// DFIFO
+//--------------------------------------------------------------------
+// Read a single data packet from receive DFIFO
+void dfifo_read_packet(dwc2_regs_t* dwc2, uint8_t* dst, uint16_t len) {
+  const volatile uint32_t* rx_fifo = dwc2->fifo[0];
+
+  // Reading full available 32 bit words from fifo
+  uint16_t word_count = len >> 2;
+  while (word_count--) {
+    tu_unaligned_write32(dst, *rx_fifo);
+    dst += 4;
+  }
+
+  // Read the remaining 1-3 bytes from fifo
+  const uint8_t bytes_rem = len & 0x03;
+  if (bytes_rem != 0) {
+    const uint32_t tmp = *rx_fifo;
+    dst[0] = tu_u32_byte0(tmp);
+    if (bytes_rem > 1) {
+      dst[1] = tu_u32_byte1(tmp);
+    }
+    if (bytes_rem > 2) {
+      dst[2] = tu_u32_byte2(tmp);
+    }
+  }
+}
+
+// Write a single data packet to DFIFO
+void dfifo_write_packet(dwc2_regs_t* dwc2, uint8_t fifo_num, const uint8_t* src, uint16_t len) {
+  volatile uint32_t* tx_fifo = dwc2->fifo[fifo_num];
+
+  // Pushing full available 32 bit words to fifo
+  uint16_t word_count = len >> 2;
+  while (word_count--) {
+    *tx_fifo = tu_unaligned_read32(src);
+    src += 4;
+  }
+
+  // Write the remaining 1-3 bytes into fifo
+  const uint8_t bytes_rem = len & 0x03;
+  if (bytes_rem) {
+    uint32_t tmp_word = src[0];
+    if (bytes_rem > 1) {
+      tmp_word |= (src[1] << 8);
+    }
+    if (bytes_rem > 2) {
+      tmp_word |= (src[2] << 16);
+    }
+
+    *tx_fifo = tmp_word;
+  }
+}
+
+#endif
diff --git a/src/portable/synopsys/dwc2/dwc2_common.h b/src/portable/synopsys/dwc2/dwc2_common.h
new file mode 100644
index 000000000..3f7f23c3a
--- /dev/null
+++ b/src/portable/synopsys/dwc2/dwc2_common.h
@@ -0,0 +1,101 @@
+/*
+* The MIT License (MIT)
+ *
+ * Copyright (c) 2024 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef TUSB_DWC2_COMMON_H
+#define TUSB_DWC2_COMMON_H
+
+#include "common/tusb_common.h"
+#include "dwc2_type.h"
+
+// Following symbols must be defined by port header
+// - _dwc2_controller[]: array of controllers
+// - DWC2_EP_MAX: largest EP counts of all controllers
+// - dwc2_phy_init/dwc2_phy_update: phy init called before and after core reset
+// - dwc2_dcd_int_enable/dwc2_dcd_int_disable
+// - dwc2_remote_wakeup_delay
+
+#if defined(TUP_USBIP_DWC2_STM32)
+  #include "dwc2_stm32.h"
+#elif defined(TUP_USBIP_DWC2_ESP32)
+  #include "dwc2_esp32.h"
+#elif TU_CHECK_MCU(OPT_MCU_GD32VF103)
+  #include "dwc2_gd32.h"
+#elif TU_CHECK_MCU(OPT_MCU_BCM2711, OPT_MCU_BCM2835, OPT_MCU_BCM2837)
+  #include "dwc2_bcm.h"
+#elif TU_CHECK_MCU(OPT_MCU_EFM32GG)
+  #include "dwc2_efm32.h"
+#elif TU_CHECK_MCU(OPT_MCU_XMC4000)
+  #include "dwc2_xmc.h"
+#else
+  #error "Unsupported MCUs"
+#endif
+
+enum {
+  DWC2_CONTROLLER_COUNT = TU_ARRAY_SIZE(_dwc2_controller)
+};
+
+enum {
+  OTG_INT_COMMON = 0 // GINTSTS_DISCINT | GINTSTS_CONIDSTSCHNG
+};
+
+//--------------------------------------------------------------------+
+// Core/Controller
+//--------------------------------------------------------------------+
+TU_ATTR_ALWAYS_INLINE static inline dwc2_regs_t* DWC2_REG(uint8_t rhport) {
+  if (rhport >= DWC2_CONTROLLER_COUNT) {
+    // user mis-configured, ignore and use first controller
+    rhport = 0;
+  }
+  return (dwc2_regs_t*)_dwc2_controller[rhport].reg_base;
+}
+
+bool dwc2_core_is_highspeed(dwc2_regs_t* dwc2, tusb_role_t role);
+bool dwc2_core_init(uint8_t rhport, bool is_highspeed);
+void dwc2_core_handle_common_irq(uint8_t rhport, bool in_isr);
+
+//--------------------------------------------------------------------+
+// DFIFO
+//--------------------------------------------------------------------+
+TU_ATTR_ALWAYS_INLINE static inline void dfifo_flush_tx(dwc2_regs_t* dwc2, uint8_t fnum) {
+  // flush TX fifo and wait for it cleared
+  dwc2->grstctl = GRSTCTL_TXFFLSH | (fnum << GRSTCTL_TXFNUM_Pos);
+  while (dwc2->grstctl & GRSTCTL_TXFFLSH_Msk) {}
+}
+
+TU_ATTR_ALWAYS_INLINE static inline void dfifo_flush_rx(dwc2_regs_t* dwc2) {
+  // flush RX fifo and wait for it cleared
+  dwc2->grstctl = GRSTCTL_RXFFLSH;
+  while (dwc2->grstctl & GRSTCTL_RXFFLSH_Msk) {}
+}
+
+void dfifo_read_packet(dwc2_regs_t* dwc2, uint8_t* dst, uint16_t len);
+void dfifo_write_packet(dwc2_regs_t* dwc2, uint8_t fifo_num, uint8_t const* src, uint16_t len);
+
+//--------------------------------------------------------------------+
+// DMA
+//--------------------------------------------------------------------+
+
+#endif
diff --git a/src/portable/synopsys/dwc2/dwc2_esp32.h b/src/portable/synopsys/dwc2/dwc2_esp32.h
index 4cdbcdb7a..42ab4b80f 100644
--- a/src/portable/synopsys/dwc2/dwc2_esp32.h
+++ b/src/portable/synopsys/dwc2/dwc2_esp32.h
@@ -25,13 +25,14 @@
  */
 
 
-#ifndef _DWC2_ESP32_H_
-#define _DWC2_ESP32_H_
+#ifndef TUSB_DWC2_ESP32_H_
+#define TUSB_DWC2_ESP32_H_
 
 #ifdef __cplusplus
  extern "C" {
 #endif
 
+#include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
 
 #include "esp_intr_alloc.h"
@@ -59,21 +60,37 @@ static const dwc2_controller_t _dwc2_controller[] = {
 };
 #endif
 
+//--------------------------------------------------------------------+
+//
+//--------------------------------------------------------------------+
 static intr_handle_t usb_ih[TU_ARRAY_SIZE(_dwc2_controller)];
 
-static void dcd_int_handler_wrap(void* arg) {
-  const uint8_t rhport = (uint8_t)(uintptr_t) arg;
-  dcd_int_handler(rhport);
+static void dwc2_int_handler_wrap(void* arg) {
+  const uint8_t rhport = tu_u16_low((uint16_t)(uintptr_t)arg);
+  const tusb_role_t role = (tusb_role_t) tu_u16_high((uint16_t)(uintptr_t)arg);
+#if CFG_TUD_ENABLED
+  if (role == TUSB_ROLE_DEVICE) {
+    dcd_int_handler(rhport);
+  }
+#endif
+#if CFG_TUH_ENABLED
+  if (role == TUSB_ROLE_HOST) {
+    hcd_int_handler(rhport, true);
+  }
+#endif
 }
 
-TU_ATTR_ALWAYS_INLINE static inline void dwc2_dcd_int_enable(uint8_t rhport) {
-  esp_intr_alloc(_dwc2_controller[rhport].irqnum, ESP_INTR_FLAG_LOWMED,
-                 dcd_int_handler_wrap, (void*)(uintptr_t) rhport, &usb_ih[rhport]);
+TU_ATTR_ALWAYS_INLINE static inline void dwc2_int_set(uint8_t rhport, tusb_role_t role, bool enabled) {
+  if (enabled) {
+    esp_intr_alloc(_dwc2_controller[rhport].irqnum, ESP_INTR_FLAG_LOWMED,
+                   dwc2_int_handler_wrap, (void*)(uintptr_t)tu_u16(role, rhport), &usb_ih[rhport]);
+  } else {
+    esp_intr_free(usb_ih[rhport]);
+  }
 }
 
-TU_ATTR_ALWAYS_INLINE static inline void dwc2_dcd_int_disable(uint8_t rhport) {
-  esp_intr_free(usb_ih[rhport]);
-}
+#define dwc2_dcd_int_enable(_rhport)  dwc2_int_set(_rhport, TUSB_ROLE_DEVICE, true)
+#define dwc2_dcd_int_disable(_rhport) dwc2_int_set(_rhport, TUSB_ROLE_DEVICE, false)
 
 TU_ATTR_ALWAYS_INLINE static inline void dwc2_remote_wakeup_delay(void) {
   vTaskDelay(pdMS_TO_TICKS(1));
@@ -83,14 +100,15 @@ TU_ATTR_ALWAYS_INLINE static inline void dwc2_remote_wakeup_delay(void) {
 TU_ATTR_ALWAYS_INLINE static inline void dwc2_phy_init(dwc2_regs_t* dwc2, uint8_t hs_phy_type) {
   (void)dwc2;
   (void)hs_phy_type;
-  // nothing to do
+  // maybe usb_utmi_hal_init()
+
 }
 
 // MCU specific PHY update, it is called AFTER init() and core reset
 TU_ATTR_ALWAYS_INLINE static inline void dwc2_phy_update(dwc2_regs_t* dwc2, uint8_t hs_phy_type) {
   (void)dwc2;
   (void)hs_phy_type;
-  // nothing to do
+  // maybe usb_utmi_hal_disable()
 }
 
 #ifdef __cplusplus
diff --git a/src/portable/synopsys/dwc2/dwc2_info.md b/src/portable/synopsys/dwc2/dwc2_info.md
index cfd0c81a8..78c2c50f8 100644
--- a/src/portable/synopsys/dwc2/dwc2_info.md
+++ b/src/portable/synopsys/dwc2/dwc2_info.md
@@ -7,7 +7,7 @@
 | GHWCFG2                    | 0x228DDD50      | 0x228F5910   | 0x224DD930    | 0x215FFFD0   | 0x229DCD20                | 0x229ED590       | 0x229ED520       | 0x229ED520        | 0x229FE1D0   | 0x229FE190   | 0x229FE190     | 0x229ED520   | 0x228FE052   | 0x00000000  | 0x228F5930   |
 | - op_mode                  | HNP SRP         | HNP SRP      | HNP SRP       | HNP SRP      | HNP SRP                   | HNP SRP          | HNP SRP          | HNP SRP           | HNP SRP      | HNP SRP      | HNP SRP        | HNP SRP      | noHNP noSRP  | HNP SRP     | HNP SRP      |
 | - arch                     | DMA internal    | DMA internal | DMA internal  | DMA internal | Slave only                | DMA internal     | Slave only       | Slave only        | DMA internal | DMA internal | DMA internal   | Slave only   | DMA internal | Slave only  | DMA internal |
-| - p2p (hub support)        | 0               | 0            | 1             | 0            | 1                         | 0                | 1                | 1                 | 0            | 0            | 0              | 1            | 0            | 0           | 1            |
+| - single_point             | hub             | hub          | n/a           | hub          | n/a                       | hub              | n/a              | n/a               | hub          | hub          | hub            | n/a          | hub          | hub         | n/a          |
 | - hs_phy_type              | UTMI+           | n/a          | n/a           | UTMI+/ULPI   | n/a                       | ULPI             | n/a              | n/a               | UTMI+/ULPI   | ULPI         | ULPI           | n/a          | UTMI+        | n/a         | n/a          |
 | - fs_phy_type              | Dedicated       | Dedicated    | Dedicated     | Shared ULPI  | Dedicated                 | Dedicated        | Dedicated        | Dedicated         | Dedicated    | Dedicated    | Dedicated      | Dedicated    | n/a          | n/a         | Dedicated    |
 | - num_dev_ep               | 7               | 6            | 6             | 15           | 3                         | 5                | 5                | 5                 | 8            | 8            | 8              | 5            | 8            | 0           | 6            |
@@ -16,8 +16,8 @@
 | - enable_dynamic_fifo      | 1               | 1            | 1             | 1            | 1                         | 1                | 1                | 1                 | 1            | 1            | 1              | 1            | 1            | 0           | 1            |
 | - mul_proc_intrpt          | 0               | 0            | 0             | 1            | 1                         | 1                | 1                | 1                 | 1            | 1            | 1              | 1            | 0            | 0           | 0            |
 | - reserved21               | 0               | 0            | 0             | 0            | 0                         | 0                | 0                | 0                 | 0            | 0            | 0              | 0            | 0            | 0           | 0            |
-| - nptx_q_depth             | 2               | 2            | 1             | 1            | 2                         | 2                | 2                | 2                 | 2            | 2            | 2              | 2            | 2            | 0           | 2            |
-| - ptx_q_depth              | 2               | 2            | 2             | 1            | 2                         | 2                | 2                | 2                 | 2            | 2            | 2              | 2            | 2            | 0           | 2            |
+| - nptx_q_depth             | 8               | 8            | 4             | 4            | 8                         | 8                | 8                | 8                 | 8            | 8            | 8              | 8            | 8            | 2           | 8            |
+| - ptx_q_depth              | 8               | 8            | 8             | 4            | 8                         | 8                | 8                | 8                 | 8            | 8            | 8              | 8            | 8            | 2           | 8            |
 | - token_q_depth            | 8               | 8            | 8             | 8            | 8                         | 8                | 8                | 8                 | 8            | 8            | 8              | 8            | 8            | 0           | 8            |
 | - otg_enable_ic_usb        | 0               | 0            | 0             | 0            | 0                         | 0                | 0                | 0                 | 0            | 0            | 0              | 0            | 0            | 0           | 0            |
 | GHWCFG3                    | 0x0FF000E8      | 0x01F204E8   | 0x00C804B5    | 0x03805EB5   | 0x020001E8                | 0x03F403E8       | 0x0200D1E8       | 0x0200D1E8        | 0x03EED2E8   | 0x03EED2E8   | 0x03B8D2E8     | 0x0200D1E8   | 0x03B882E8   | 0x00000000  | 0x027A01E5   |
diff --git a/src/portable/synopsys/dwc2/dwc2_info.py b/src/portable/synopsys/dwc2/dwc2_info.py
index d1793a005..5884cd455 100755
--- a/src/portable/synopsys/dwc2/dwc2_info.py
+++ b/src/portable/synopsys/dwc2/dwc2_info.py
@@ -24,7 +24,6 @@ dwc2_reg_value = {
     'ST U5A5 HS': [0x5000, 0x4F54411A, 0, 0x228FE052, 0x03B882E8, 0xE2103E30],
     'GD32VF103': [0x1000, 0, 0, 0, 0, 0],
     'XMC4500': [0xAEC000, 0x4F54292A, 0, 0x228F5930, 0x027A01E5, 0xDBF08030]
-
 }
 
 # Combine dwc2_info with dwc2_reg_list
@@ -44,7 +43,7 @@ class GHWCFG2(ctypes.LittleEndianStructure):
     _fields_ = [
         ("op_mode", ctypes.c_uint32, 3),
         ("arch", ctypes.c_uint32, 2),
-        ("p2p (hub support)", ctypes.c_uint32, 1),
+        ("single_point", ctypes.c_uint32, 1),
         ("hs_phy_type", ctypes.c_uint32, 2),
         ("fs_phy_type", ctypes.c_uint32, 2),
         ("num_dev_ep", ctypes.c_uint32, 4),
@@ -119,6 +118,10 @@ GHWCFG2_field = {
         1: "DMA external",
         2: "DMA internal"
     },
+    'single_point': {
+        0: "hub",
+        1: "n/a"
+    },
     'hs_phy_type': {
         0: "n/a",
         1: "UTMI+",
@@ -130,7 +133,18 @@ GHWCFG2_field = {
         1: "Dedicated",
         2: "Shared UTMI+",
         3: "Shared ULPI"
-    }
+    },
+    'nptx_q_depth': {
+        0: "2",
+        1: "4",
+        2: "8",
+    },
+    'ptx_q_depth': {
+        0: "2",
+        1: "4",
+        2: "8",
+        3: "16"
+    },
 }
 
 # mapping for specific fields in GHWCFG4
diff --git a/src/portable/synopsys/dwc2/dwc2_stm32.h b/src/portable/synopsys/dwc2/dwc2_stm32.h
index 395b6d870..8719c4820 100644
--- a/src/portable/synopsys/dwc2/dwc2_stm32.h
+++ b/src/portable/synopsys/dwc2/dwc2_stm32.h
@@ -124,13 +124,19 @@ static const dwc2_controller_t _dwc2_controller[] = {
 // SystemCoreClock is already included by family header
 // extern uint32_t SystemCoreClock;
 
-TU_ATTR_ALWAYS_INLINE static inline void dwc2_dcd_int_enable(uint8_t rhport) {
-  NVIC_EnableIRQ((IRQn_Type) _dwc2_controller[rhport].irqnum);
+TU_ATTR_ALWAYS_INLINE static inline void dwc2_int_set(uint8_t rhport, tusb_role_t role, bool enabled) {
+  (void) role;
+  const IRQn_Type irqn = (IRQn_Type) _dwc2_controller[rhport].irqnum;
+  if (enabled) {
+    NVIC_EnableIRQ(irqn);
+  } else {
+    NVIC_DisableIRQ(irqn);
+  }
 }
 
-TU_ATTR_ALWAYS_INLINE static inline void dwc2_dcd_int_disable(uint8_t rhport) {
-  NVIC_DisableIRQ((IRQn_Type) _dwc2_controller[rhport].irqnum);
-}
+#define dwc2_dcd_int_enable(_rhport)  dwc2_int_set(_rhport, TUSB_ROLE_DEVICE, true)
+#define dwc2_dcd_int_disable(_rhport) dwc2_int_set(_rhport, TUSB_ROLE_DEVICE, false)
+
 
 TU_ATTR_ALWAYS_INLINE static inline void dwc2_remote_wakeup_delay(void) {
   // try to delay for 1 ms
diff --git a/src/portable/synopsys/dwc2/dwc2_type.h b/src/portable/synopsys/dwc2/dwc2_type.h
index cf05bbfec..1247f19a3 100644
--- a/src/portable/synopsys/dwc2/dwc2_type.h
+++ b/src/portable/synopsys/dwc2/dwc2_type.h
@@ -31,8 +31,8 @@
   *                        opensource.org/licenses/BSD-3-Clause
   */
 
-#ifndef _TUSB_DWC2_TYPES_H_
-#define _TUSB_DWC2_TYPES_H_
+#ifndef TUSB_DWC2_TYPES_H_
+#define TUSB_DWC2_TYPES_H_
 
 #include "stdint.h"
 
@@ -87,6 +87,11 @@ typedef struct
 #endif
 
 enum {
+  GOTGCTL_OTG_VERSION_1_3 = 0,
+  GOTGCTL_OTG_VERSION_2_0 = 1,
+};
+
+enum {
   GHWCFG2_OPMODE_HNP_SRP         = 0,
   GHWCFG2_OPMODE_SRP             = 1,
   GHWCFG2_OPMODE_NON_HNP_NON_SRP = 2,
@@ -122,8 +127,52 @@ enum {
   GHWCFFG4_PHY_DATA_WIDTH_8_16 = 2, // software selectable
 };
 
+enum {
+  HPRT_SPEED_HIGH = 0,
+  HPRT_SPEED_FULL = 1,
+  HPRT_SPEED_LOW  = 2
+};
+
+enum {
+  GINTSTS_CMODE_DEVICE = 0,
+  GINTSTS_CMODE_HOST   = 1,
+};
+
+enum {
+  HCTSIZ_PID_DATA0 = 0, // 00b
+  HCTSIZ_PID_DATA2 = 1, // 01b
+  HCTSIZ_PID_DATA1 = 2, // 10b
+  HCTSIZ_PID_SETUP = 3, // 11b
+};
+enum {
+  HCTSIZ_PID_MDATA = 3,
+};
+
+enum {
+  GRXSTS_PKTSTS_GLOBALOUTNAK = 1,
+  GRXSTS_PKTSTS_OUTRX        = 2,
+  GRXSTS_PKTSTS_OUTDONE      = 3,
+  GRXSTS_PKTSTS_SETUPDONE    = 4,
+  GRXSTS_PKTSTS_SETUPRX      = 6
+};
+
+enum {
+  GRXSTS_PKTSTS_RX_DATA    = 2,
+  GRXSTS_PKTSTS_RX_COMPLETE  = 3,
+  GRXSTS_PKTSTS_HOST_DATATOGGLE_ERR = 5,
+  GRXSTS_PKTSTS_HOST_CHANNEL_HALTED = 7
+};
+
+// Same as TUSB_XFER_*
+enum {
+  HCCHAR_EPTYPE_CONTROL     = 0,
+  HCCHAR_EPTYPE_ISOCHRONOUS = 1,
+  HCCHAR_EPTYPE_BULK        = 2,
+  HCCHAR_EPTYPE_INTERRUPT   = 3
+};
+
 //--------------------------------------------------------------------
-// Register bitfield definitions
+// Common Register Bitfield
 //--------------------------------------------------------------------
 typedef struct TU_ATTR_PACKED {
   uint32_t ses_req_scs           : 1; //  0 Session request success
@@ -146,7 +195,7 @@ typedef struct TU_ATTR_PACKED {
   uint32_t ases_valid            : 1; // 18 A-session valid
   uint32_t bses_valid            : 1; // 19 B-session valid
   uint32_t otg_ver               : 1; // 20 OTG version 0: v1.3, 1: v2.0
-  uint32_t current_mode          : 1; // 21 Current mode of operation 0: device, 1: host
+  uint32_t current_mode          : 1; // 21 Current mode of operation. Only from v3.00a
   uint32_t mult_val_id_bc        : 5; // 22..26 Multi-valued input pin ID battery charger
   uint32_t chirp_en              : 1; // 27 Chirp detection enable
   uint32_t rsv28_30              : 3; // 28.30: Reserved
@@ -192,7 +241,7 @@ typedef struct TU_ATTR_PACKED {
     based on the speed of enumeration. The number of bit times added per PHY clock are as follows:
     - High-speed: PHY clock One 30-MHz = 16 bit times, One 60-MHz = 8 bit times
     - Full-speed: PHY clock One 30-MHz = 0.4 bit times, One 60-MHz = 0.2 bit times, One 48-MHz = 0.25 bit times */
-  uint32_t phy_if                  : 1; // 3 PHY interface. 0: 8 bits, 1: 16 bits
+  uint32_t phy_if16                : 1; // 3 PHY interface. 0: 8 bits, 1: 16 bits
   uint32_t ulpi_utmi_sel           : 1; // 4 ULPI/UTMI select. 0: UTMI+, 1: ULPI
   uint32_t fs_intf_sel             : 1; // 5 Fullspeed serial interface select. 0: 6-pin, 1: 3-pin
   uint32_t phy_sel                 : 1; // 6 HS/FS PHY selection. 0: HS UTMI+ or ULPI, 1: FS serial transceiver
@@ -241,9 +290,20 @@ typedef struct TU_ATTR_PACKED {
 TU_VERIFY_STATIC(sizeof(dwc2_grstctl_t) == 4, "incorrect size");
 
 typedef struct TU_ATTR_PACKED {
+  uint32_t ep_ch_num             : 4; // 0..3 Endpoint/Channel Number
+  uint32_t byte_count            :11; // 4..14 Byte Count
+  uint32_t dpid                  : 2; // 15..16 Data PID
+  uint32_t packet_status         : 4; // 17..20 Packet Status
+  uint32_t frame_number          : 4; // 21..24 Frame Number
+  uint32_t rsv25_31              : 7; // 25..31 Reserved
+} dwc2_grxstsp_t;
+TU_VERIFY_STATIC(sizeof(dwc2_grxstsp_t) == 4, "incorrect size");
+
+// Hardware Configuration
+typedef struct TU_ATTR_PACKED {
   uint32_t op_mode                : 3; // 0..2 HNP/SRP Host/Device/OTG mode
   uint32_t arch                   : 2; // 3..4 Slave/External/Internal DMA
-  uint32_t point2point            : 1; // 5 0: support hub and split | 1: no hub, no split
+  uint32_t single_point           : 1; // 5 0: support hub and split | 1: no hub, no split
   uint32_t hs_phy_type            : 2; // 6..7 0: not supported | 1: UTMI+ | 2: ULPI | 3: UTMI+ and ULPI
   uint32_t fs_phy_type            : 2; // 8..9 0: not supported | 1: dedicated | 2: UTMI+ | 3: ULPI
   uint32_t num_dev_ep             : 4; // 10..13 Number of device endpoints (excluding EP0)
@@ -301,41 +361,150 @@ typedef struct TU_ATTR_PACKED {
 }dwc2_ghwcfg4_t;
 TU_VERIFY_STATIC(sizeof(dwc2_ghwcfg4_t) == 4, "incorrect size");
 
+//--------------------------------------------------------------------
+// Host Register Bitfield
+//--------------------------------------------------------------------
+
+typedef struct TU_ATTR_PACKED {
+  uint32_t fifo_available      : 16; // 0..15 Number of words available in the Tx FIFO
+  uint32_t req_queue_available :  8; // 16..23 Number of spaces available in the NPT transmit request queue for both IN and OU
+  // 24..31 is top entry in the request queue that is currently being processed by the MAC
+  uint32_t qtop_terminate      :  1; // 24 Last entry for selected channel
+  uint32_t qtop_type           :  2; // 25..26 Token (0) In/Out (1) ZLP, (2) Ping/cspit, (3) Channel halt command
+  uint32_t qtop_ch_num         :  4; // 27..30 Channel number
+} dwc2_hnptxsts_t;
+TU_VERIFY_STATIC(sizeof(dwc2_hnptxsts_t) == 4, "incorrect size");
+
+typedef struct TU_ATTR_PACKED {
+  uint32_t fifo_available      : 16; // 0..15 Number of words available in the Tx FIFO
+  uint32_t req_queue_available : 7; // 16..22 Number of spaces available in the PTX transmit request queue
+  uint32_t qtop_terminate      : 1; // 23 Last entry for selected channel
+  uint32_t qtop_last_period    : 1; // 24 Last entry for selected channel is a periodic entry
+  uint32_t qtop_type           : 2; // 25..26 Token (0) In/Out (1) ZLP, (2) Ping/cspit, (3) Channel halt command
+  uint32_t qtop_ch_num         : 4; // 27..30 Channel number
+  uint32_t qtop_odd_frame      : 1; // 31 Send in odd frame
+} dwc2_hptxsts_t;
+TU_VERIFY_STATIC(sizeof(dwc2_hptxsts_t) == 4, "incorrect size");
+
+typedef struct TU_ATTR_PACKED {
+  uint32_t conn_status         : 1; // 0 Port connect status
+  uint32_t conn_detected       : 1; // 1 Port connect detected
+  uint32_t enable              : 1; // 2 Port enable status
+  uint32_t enable_change       : 1; // 3 Port enable change
+  uint32_t over_current_active : 1; // 4 Port Over-current active
+  uint32_t over_current_change : 1; // 5 Port Over-current change
+  uint32_t resume              : 1; // 6 Port resume
+  uint32_t suspend             : 1; // 7 Port suspend
+  uint32_t reset               : 1; // 8 Port reset
+  uint32_t rsv9                : 1; // 9 Reserved
+  uint32_t line_status         : 2; // 10..11 Line status
+  uint32_t power               : 1; // 12 Port power
+  uint32_t test_control        : 4; // 13..16 Port Test control
+  uint32_t speed               : 2; // 17..18 Port speed
+  uint32_t rsv19_31            :13; // 19..31 Reserved
+}dwc2_hprt_t;
+TU_VERIFY_STATIC(sizeof(dwc2_hprt_t) == 4, "incorrect size");
+
+typedef struct TU_ATTR_PACKED {
+  uint32_t ep_size         : 11; // 0..10 Maximum packet size
+  uint32_t ep_num          :  4; // 11..14 Endpoint number
+  uint32_t ep_dir          :  1; // 15 Endpoint direction
+  uint32_t rsv16           :  1; // 16 Reserved
+  uint32_t low_speed_dev   :  1; // 17 Low-speed device
+  uint32_t ep_type         :  2; // 18..19 Endpoint type
+  uint32_t err_multi_count :  2; // 20..21 Error (splitEn = 1) / Multi (SplitEn = 0)  count
+  uint32_t dev_addr        :  7; // 22..28 Device address
+  uint32_t odd_frame       :  1; // 29 Odd frame
+  uint32_t disable         :  1; // 30 Channel disable
+  uint32_t enable          :  1; // 31 Channel enable
+} dwc2_channel_char_t;
+TU_VERIFY_STATIC(sizeof(dwc2_channel_char_t) == 4, "incorrect size");
+
+typedef struct TU_ATTR_PACKED {
+  uint32_t hub_port        :  7; // 0..6 Hub port number
+  uint32_t hub_addr        :  7; // 7..13 Hub address
+  uint32_t xact_pos        :  2; // 14..15 Transaction position
+  uint32_t split_compl     :  1; // 16 Split completion
+  uint32_t rsv17_30        : 14; // 17..30 Reserved
+  uint32_t split_en        :  1; // 31 Split enable
+} dwc2_channel_split_t;
+TU_VERIFY_STATIC(sizeof(dwc2_channel_split_t) == 4, "incorrect size");
+
+typedef struct TU_ATTR_PACKED {
+  uint32_t xfer_size      : 19; // 0..18 Transfer size in bytes
+  uint32_t packet_count   : 10; // 19..28 Number of packets
+  uint32_t pid            :  2; // 29..30 Packet ID
+  uint32_t do_ping        :  1; // 31 Do PING
+} dwc2_channel_tsize_t;
+TU_VERIFY_STATIC(sizeof(dwc2_channel_tsize_t) == 4, "incorrect size");
+
+typedef struct TU_ATTR_PACKED {
+  uint32_t num        : 16; // 0..15 Frame number
+  uint32_t remainning : 16; // 16..31 Frame remaining
+} dwc2_hfnum_t;
+TU_VERIFY_STATIC(sizeof(dwc2_hfnum_t) == 4, "incorrect size");
+
 // Host Channel
 typedef struct {
-  volatile uint32_t hcchar;           // 500 + 20*ch Host Channel Characteristics
-  volatile uint32_t hcsplt;           // 504 + 20*ch Host Channel Split Control
-  volatile uint32_t hcint;            // 508 + 20*ch Host Channel Interrupt
-  volatile uint32_t hcintmsk;         // 50C + 20*ch Host Channel Interrupt Mask
-  volatile uint32_t hctsiz;           // 510 + 20*ch Host Channel Transfer Size
-  volatile uint32_t hcdma;            // 514 + 20*ch Host Channel DMA Address
-           uint32_t reserved518;      // 518 + 20*ch
-  volatile uint32_t hcdmab;           // 51C + 20*ch Host Channel DMA Address
+  union {
+    volatile uint32_t hcchar;           // 500 + 20*ch Host Channel Characteristics
+    volatile dwc2_channel_char_t hcchar_bm;
+  };
+  union {
+    volatile uint32_t hcsplt;           // 504 + 20*ch Host Channel Split Control
+    volatile dwc2_channel_split_t hcsplt_bm;
+  };
+    volatile uint32_t hcint;            // 508 + 20*ch Host Channel Interrupt
+    volatile uint32_t hcintmsk;         // 50C + 20*ch Host Channel Interrupt Mask
+  union {
+    volatile uint32_t hctsiz;           // 510 + 20*ch Host Channel Transfer Size
+    volatile dwc2_channel_tsize_t hctsiz_bm;
+  };
+    volatile uint32_t hcdma;            // 514 + 20*ch Host Channel DMA Address
+             uint32_t reserved518;      // 518 + 20*ch
+    volatile uint32_t hcdmab;           // 51C + 20*ch Host Channel DMA Address
 } dwc2_channel_t;
 
+//--------------------------------------------------------------------
+// Device Register Bitfield
+//--------------------------------------------------------------------
+typedef struct TU_ATTR_PACKED {
+ uint32_t xfer_size    : 19; // 0..18 Transfer size in bytes
+ uint32_t packet_count : 10; // 19..28 Number of packets
+ uint32_t mc_pid       :  2; // 29..30 IN: Multi Count, OUT: PID
+} dwc2_ep_tsize_t;
+TU_VERIFY_STATIC(sizeof(dwc2_ep_tsize_t) == 4, "incorrect size");
+
 // Endpoint IN
 typedef struct {
-  volatile uint32_t diepctl;          // 900 + 20*ep Device IN Endpoint Control
-           uint32_t reserved04;       // 904
-  volatile uint32_t diepint;          // 908 + 20*ep Device IN Endpoint Interrupt
-           uint32_t reserved0c;       // 90C
-  volatile uint32_t dieptsiz;         // 910 + 20*ep Device IN Endpoint Transfer Size
-  volatile uint32_t diepdma;          // 914 + 20*ep Device IN Endpoint DMA Address
-  volatile uint32_t dtxfsts;          // 918 + 20*ep Device IN Endpoint Tx FIFO Status
-           uint32_t reserved1c;       // 91C
+    volatile uint32_t diepctl;          // 900 + 20*ep Device IN Endpoint Control
+             uint32_t reserved04;       // 904
+    volatile uint32_t diepint;          // 908 + 20*ep Device IN Endpoint Interrupt
+             uint32_t reserved0c;       // 90C
+  union {
+    volatile uint32_t dieptsiz;         // 910 + 20*ep Device IN Endpoint Transfer Size
+    volatile dwc2_ep_tsize_t dieptsiz_bm;
+  };
+    volatile uint32_t diepdma;          // 914 + 20*ep Device IN Endpoint DMA Address
+    volatile uint32_t dtxfsts;          // 918 + 20*ep Device IN Endpoint Tx FIFO Status
+             uint32_t reserved1c;       // 91C
 } dwc2_epin_t;
 
 // Endpoint OUT
 typedef struct {
-  volatile uint32_t doepctl;          // B00 + 20*ep Device OUT Endpoint Control
-           uint32_t reserved04;       // B04
-  volatile uint32_t doepint;          // B08 + 20*ep Device OUT Endpoint Interrupt
-           uint32_t reserved0c;       // B0C
-  volatile uint32_t doeptsiz;         // B10 + 20*ep Device OUT Endpoint Transfer Size
-  volatile uint32_t doepdma;          // B14 + 20*ep Device OUT Endpoint DMA Address
-           uint32_t reserved18[2];    // B18..B1C
+    volatile uint32_t doepctl;          // B00 + 20*ep Device OUT Endpoint Control
+             uint32_t reserved04;       // B04
+    volatile uint32_t doepint;          // B08 + 20*ep Device OUT Endpoint Interrupt
+             uint32_t reserved0c;       // B0C
+  union {
+    volatile uint32_t doeptsiz;         // B10 + 20*ep Device OUT Endpoint Transfer Size
+    volatile dwc2_ep_tsize_t doeptsiz_bm;
+  };
+    volatile uint32_t doepdma;          // B14 + 20*ep Device OUT Endpoint DMA Address
+             uint32_t reserved18[2];    // B18..B1C
 } dwc2_epout_t;
 
+// Universal Endpoint
 typedef struct {
   union {
     volatile uint32_t diepctl;
@@ -351,6 +520,7 @@ typedef struct {
   union {
     volatile uint32_t dieptsiz;
     volatile uint32_t doeptsiz;
+    volatile dwc2_ep_tsize_t deptsiz_bm;
   };
   union {
     volatile uint32_t diepdma;
@@ -367,21 +537,43 @@ TU_VERIFY_STATIC(sizeof(dwc2_dep_t) == 0x20, "incorrect size");
 //--------------------------------------------------------------------
 typedef struct {
     //------------- Core Global -------------//
+  union {
     volatile uint32_t gotgctl;          // 000 OTG Control and Status
+    volatile dwc2_gotgctl_t gotgctl_bm;
+  };
+  union {
     volatile uint32_t gotgint;          // 004 OTG Interrupt
+    volatile dwc2_gotgint_t gotgint_bm;
+  };
+  union {
     volatile uint32_t gahbcfg;          // 008 AHB Configuration
+    volatile dwc2_gahbcfg_t gahbcfg_bm;
+  };
+  union {
     volatile uint32_t gusbcfg;          // 00c USB Configuration
+    volatile dwc2_gusbcfg_t gusbcfg_bm;
+  };
+  union {
     volatile uint32_t grstctl;          // 010 Reset
+    volatile dwc2_grstctl_t grstctl_bm;
+  };
     volatile uint32_t gintsts;          // 014 Interrupt
     volatile uint32_t gintmsk;          // 018 Interrupt Mask
     volatile uint32_t grxstsr;          // 01c Receive Status Debug Read
+  union {
     volatile uint32_t grxstsp;          // 020 Receive Status Read/Pop
+    volatile dwc2_grxstsp_t grxstsp_bm;
+  };
     volatile uint32_t grxfsiz;          // 024 Receive FIFO Size
   union {
     volatile uint32_t dieptxf0;         // 028 EP0 Tx FIFO Size
     volatile uint32_t gnptxfsiz;        // 028 Non-periodic Transmit FIFO Size
   };
-    volatile uint32_t gnptxsts;         // 02c Non-periodic Transmit FIFO/Queue Status
+  union {
+    volatile uint32_t hnptxsts;         // 02c Non-periodic Transmit FIFO/Queue Status
+    volatile dwc2_hnptxsts_t hnptxsts_bm;
+    volatile uint32_t gnptxsts;
+  };
     volatile uint32_t gi2cctl;          // 030 I2C Address
     volatile uint32_t gpvndctl;         // 034 PHY Vendor Control
   union {
@@ -415,14 +607,23 @@ typedef struct {
     //------------ Host -------------//
     volatile uint32_t hcfg;             // 400 Host Configuration
     volatile uint32_t hfir;             // 404 Host Frame Interval
+  union {
     volatile uint32_t hfnum;            // 408 Host Frame Number / Frame Remaining
+    volatile dwc2_hfnum_t hfnum_bm;
+  };
              uint32_t reserved40c;      // 40C
+  union {
     volatile uint32_t hptxsts;          // 410 Host Periodic TX FIFO / Queue Status
+    volatile dwc2_hptxsts_t hptxsts_bm;
+  };
     volatile uint32_t haint;            // 414 Host All Channels Interrupt
     volatile uint32_t haintmsk;         // 418 Host All Channels Interrupt Mask
     volatile uint32_t hflbaddr;         // 41C Host Frame List Base Address
              uint32_t reserved420[8];   // 420..43F
+  union {
     volatile uint32_t hprt;             // 440 Host Port Control and Status
+    volatile dwc2_hprt_t hprt_bm;
+  };
              uint32_t reserved444[47];  // 444..4FF
 
     //------------- Host Channel -------------//
@@ -464,8 +665,8 @@ typedef struct {
     uint32_t reservedd00[64];  // D00..DFF
 
     //------------- Power Clock -------------//
-    volatile uint32_t pcgctl;           // E00 Power and Clock Gating Control
-    volatile uint32_t pcgctl1;          // E04
+    volatile uint32_t pcgcctl;          // E00 Power and Clock Gating Characteristic Control
+    volatile uint32_t pcgcctl1;         // E04 Power and Clock Gating Characteristic Control 1
              uint32_t reservede08[126]; // E08..FFF
 
     //------------- FIFOs -------------//
@@ -478,7 +679,7 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, channel) == 0x0500, "incorrect size");
 TU_VERIFY_STATIC(offsetof(dwc2_regs_t, dcfg   ) == 0x0800, "incorrect size");
 TU_VERIFY_STATIC(offsetof(dwc2_regs_t, epin   ) == 0x0900, "incorrect size");
 TU_VERIFY_STATIC(offsetof(dwc2_regs_t, epout  ) == 0x0B00, "incorrect size");
-TU_VERIFY_STATIC(offsetof(dwc2_regs_t, pcgctl ) == 0x0E00, "incorrect size");
+TU_VERIFY_STATIC(offsetof(dwc2_regs_t, pcgcctl) == 0x0E00, "incorrect size");
 TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 
 //--------------------------------------------------------------------+
@@ -542,14 +743,16 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define GOTGCTL_OTGVER                   GOTGCTL_OTGVER_Msk                       // OTG version
 
 /********************  Bit definition for HCFG register  ********************/
-#define HCFG_FSLSPCS_Pos                 (0U)
-#define HCFG_FSLSPCS_Msk                 (0x3UL << HCFG_FSLSPCS_Pos)              // 0x00000003
-#define HCFG_FSLSPCS                     HCFG_FSLSPCS_Msk                         // FS/LS PHY clock select
-#define HCFG_FSLSPCS_0                   (0x1UL << HCFG_FSLSPCS_Pos)              // 0x00000001
-#define HCFG_FSLSPCS_1                   (0x2UL << HCFG_FSLSPCS_Pos)              // 0x00000002
-#define HCFG_FSLSS_Pos                   (2U)
-#define HCFG_FSLSS_Msk                   (0x1UL << HCFG_FSLSS_Pos)                // 0x00000004
-#define HCFG_FSLSS                       HCFG_FSLSS_Msk                           // FS- and LS-only support
+#define HCFG_FSLS_PHYCLK_SEL_Pos         (0U)
+#define HCFG_FSLS_PHYCLK_SEL_Msk         (0x3UL << HCFG_FSLS_PHYCLK_SEL_Pos)      // 0x00000003
+#define HCFG_FSLS_PHYCLK_SEL             HCFG_FSLS_PHYCLK_SEL_Msk                 // FS/LS PHY clock select
+#define HCFG_FSLS_PHYCLK_SEL_30_60MHZ    (0x0UL << HCFG_FSLS_PHYCLK_SEL_Pos)      // 0x00000000
+#define HCFG_FSLS_PHYCLK_SEL_48MHZ       (0x1UL << HCFG_FSLS_PHYCLK_SEL_Pos)      // 0x00000001
+#define HCFG_FSLS_PHYCLK_SEL_6MHZ        (0x2UL << HCFG_FSLS_PHYCLK_SEL_Pos)      // 0x00000002
+
+#define HCFG_FSLS_ONLY_Pos               (2U)
+#define HCFG_FSLS_ONLY_Msk               (0x1UL << HCFG_FSLS_ONLY_Pos)            // 0x00000004
+#define HCFG_FSLS_ONLY                   HCFG_FSLS_ONLY_Msk                       // FS- and LS-only support
 
 /********************  Bit definition for PCGCR register  ********************/
 #define PCGCR_STPPCLK_Pos                (0U)
@@ -664,6 +867,9 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define HFIR_FRIVL_Pos                   (0U)
 #define HFIR_FRIVL_Msk                   (0xFFFFUL << HFIR_FRIVL_Pos)             // 0x0000FFFF
 #define HFIR_FRIVL                       HFIR_FRIVL_Msk                           // Frame interval
+#define HFIR_RELOAD_CTRL_Pos             (16U)                                    // available since v2.92a
+#define HFIR_RELOAD_CTRL_Msk             (0x1UL << HFIR_RELOAD_CTRL_Pos)
+#define HFIR_RELOAD_CTRL                  HFIR_RELOAD_CTRL_Msk
 
 /********************  Bit definition for HFNUM register  ********************/
 #define HFNUM_FRNUM_Pos                  (0U)
@@ -708,19 +914,17 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define GAHBCFG_DMAEN_Pos                (5U)
 #define GAHBCFG_DMAEN_Msk                (0x1UL << GAHBCFG_DMAEN_Pos)             // 0x00000020
 #define GAHBCFG_DMAEN                    GAHBCFG_DMAEN_Msk                        // DMA enable
-#define GAHBCFG_TXFELVL_Pos              (7U)
-#define GAHBCFG_TXFELVL_Msk              (0x1UL << GAHBCFG_TXFELVL_Pos)           // 0x00000080
-#define GAHBCFG_TXFELVL                  GAHBCFG_TXFELVL_Msk                      // TxFIFO empty level
-#define GAHBCFG_PTXFELVL_Pos             (8U)
-#define GAHBCFG_PTXFELVL_Msk             (0x1UL << GAHBCFG_PTXFELVL_Pos)          // 0x00000100
-#define GAHBCFG_PTXFELVL                 GAHBCFG_PTXFELVL_Msk                     // Periodic TxFIFO empty level
-
-#define GSNPSID_ID_MASK                 TU_GENMASK(31, 16)
+#define GAHBCFG_TX_FIFO_EPMTY_LVL_Pos    (7U)
+#define GAHBCFG_TX_FIFO_EPMTY_LVL_Msk    (0x1UL << GAHBCFG_TX_FIFO_EPMTY_LVL_Pos) // 0x00000080
+#define GAHBCFG_TX_FIFO_EPMTY_LVL        GAHBCFG_TX_FIFO_EPMTY_LVL_Msk            // TxFIFO empty level
+#define GAHBCFG_PTX_FIFO_EPMTY_LVL_Pos   (8U)
+#define GAHBCFG_PTX_FIFO_EPMTY_LVL_Msk   (0x1UL << GAHBCFG_PTX_FIFO_EPMTY_LVL_Pos) // 0x00000100
+#define GAHBCFG_PTX_FIFO_EPMTY_LVL       GAHBCFG_PTX_FIFO_EPMTY_LVL_Msk            // Periodic TxFIFO empty level
 
 /********************  Bit definition for GUSBCFG register  ********************/
 #define GUSBCFG_TOCAL_Pos                (0U)
 #define GUSBCFG_TOCAL_Msk                (0x7UL << GUSBCFG_TOCAL_Pos)             // 0x00000007
-#define GUSBCFG_TOCAL                    GUSBCFG_TOCAL_Msk                        // FS timeout calibration
+#define GUSBCFG_TOCAL                    GUSBCFG_TOCAL_Msk                        // HS/FS timeout calibration
 #define GUSBCFG_PHYIF16_Pos              (3U)
 #define GUSBCFG_PHYIF16_Msk              (0x1UL << GUSBCFG_PHYIF16_Pos)           // 0x00000008
 #define GUSBCFG_PHYIF16                  GUSBCFG_PHYIF16_Msk                      // PHY Interface (PHYIf)
@@ -804,8 +1008,8 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define GRSTCTL_TXFNUM_2                 (0x04UL << GRSTCTL_TXFNUM_Pos)           // 0x00000100
 #define GRSTCTL_TXFNUM_3                 (0x08UL << GRSTCTL_TXFNUM_Pos)           // 0x00000200
 #define GRSTCTL_TXFNUM_4                 (0x10UL << GRSTCTL_TXFNUM_Pos)           // 0x00000400
-#define GRSTCTL_CSFTRST_DONE_Pos       (29)
-#define GRSTCTL_CSFTRST_DONE           (1u << GRSTCTL_CSFTRST_DONE_Pos)         // Reset Done, only available from v4.20a
+#define GRSTCTL_CSRST_DONE_Pos           (29)
+#define GRSTCTL_CSRST_DONE               (1u << GRSTCTL_CSRST_DONE_Pos)         // Reset Done, only available from v4.20a
 #define GRSTCTL_DMAREQ_Pos               (30U)
 #define GRSTCTL_DMAREQ_Msk               (0x1UL << GRSTCTL_DMAREQ_Pos)            // 0x40000000
 #define GRSTCTL_DMAREQ                   GRSTCTL_DMAREQ_Msk                       // DMA request signal
@@ -926,9 +1130,9 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define GINTSTS_RXFLVL_Pos               (4U)
 #define GINTSTS_RXFLVL_Msk               (0x1UL << GINTSTS_RXFLVL_Pos)            // 0x00000010
 #define GINTSTS_RXFLVL                   GINTSTS_RXFLVL_Msk                       // RxFIFO nonempty
-#define GINTSTS_NPTXFE_Pos               (5U)
-#define GINTSTS_NPTXFE_Msk               (0x1UL << GINTSTS_NPTXFE_Pos)            // 0x00000020
-#define GINTSTS_NPTXFE                   GINTSTS_NPTXFE_Msk                       // Nonperiodic TxFIFO empty
+#define GINTSTS_NPTX_FIFO_EMPTY_Pos      (5U)
+#define GINTSTS_NPTX_FIFO_EMPTY_Msk      (0x1UL << GINTSTS_NPTX_FIFO_EMPTY_Pos)   // 0x00000020
+#define GINTSTS_NPTX_FIFO_EMPTY          GINTSTS_NPTX_FIFO_EMPTY_Msk              // Nonperiodic TxFIFO empty
 #define GINTSTS_GINAKEFF_Pos             (6U)
 #define GINTSTS_GINAKEFF_Msk             (0x1UL << GINTSTS_GINAKEFF_Pos)          // 0x00000040
 #define GINTSTS_GINAKEFF                 GINTSTS_GINAKEFF_Msk                     // Global IN nonperiodic NAK effective
@@ -977,15 +1181,15 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define GINTSTS_HCINT_Pos                (25U)
 #define GINTSTS_HCINT_Msk                (0x1UL << GINTSTS_HCINT_Pos)             // 0x02000000
 #define GINTSTS_HCINT                    GINTSTS_HCINT_Msk                        // Host channels interrupt
-#define GINTSTS_PTXFE_Pos                (26U)
-#define GINTSTS_PTXFE_Msk                (0x1UL << GINTSTS_PTXFE_Pos)             // 0x04000000
-#define GINTSTS_PTXFE                    GINTSTS_PTXFE_Msk                        // Periodic TxFIFO empty
+#define GINTSTS_PTX_FIFO_EMPTY_Pos       (26U)
+#define GINTSTS_PTX_FIFO_EMPTY_Msk       (0x1UL << GINTSTS_PTX_FIFO_EMPTY_Pos)    // 0x04000000
+#define GINTSTS_PTX_FIFO_EMPTY           GINTSTS_PTX_FIFO_EMPTY_Msk               // Periodic TxFIFO empty
 #define GINTSTS_LPMINT_Pos               (27U)
 #define GINTSTS_LPMINT_Msk               (0x1UL << GINTSTS_LPMINT_Pos)            // 0x08000000
 #define GINTSTS_LPMINT                   GINTSTS_LPMINT_Msk                       // LPM interrupt
-#define GINTSTS_CIDSCHG_Pos              (28U)
-#define GINTSTS_CIDSCHG_Msk              (0x1UL << GINTSTS_CIDSCHG_Pos)           // 0x10000000
-#define GINTSTS_CIDSCHG                  GINTSTS_CIDSCHG_Msk                      // Connector ID status change
+#define GINTSTS_CONIDSTSCHNG_Pos         (28U)
+#define GINTSTS_CONIDSTSCHNG_Msk         (0x1UL << GINTSTS_CONIDSTSCHNG_Pos)      // 0x10000000
+#define GINTSTS_CONIDSTSCHNG             GINTSTS_CONIDSTSCHNG_Msk                 // Connector ID status change
 #define GINTSTS_DISCINT_Pos              (29U)
 #define GINTSTS_DISCINT_Msk              (0x1UL << GINTSTS_DISCINT_Pos)           // 0x20000000
 #define GINTSTS_DISCINT                  GINTSTS_DISCINT_Msk                      // Disconnect detected interrupt
@@ -1069,9 +1273,9 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define GINTMSK_LPMINTM_Pos              (27U)
 #define GINTMSK_LPMINTM_Msk              (0x1UL << GINTMSK_LPMINTM_Pos)           // 0x08000000
 #define GINTMSK_LPMINTM                  GINTMSK_LPMINTM_Msk                      // LPM interrupt Mask
-#define GINTMSK_CIDSCHGM_Pos             (28U)
-#define GINTMSK_CIDSCHGM_Msk             (0x1UL << GINTMSK_CIDSCHGM_Pos)          // 0x10000000
-#define GINTMSK_CIDSCHGM                 GINTMSK_CIDSCHGM_Msk                     // Connector ID status change mask
+#define GINTMSK_CONIDSTSCHNGM_Pos        (28U)
+#define GINTMSK_CONIDSTSCHNGM_Msk        (0x1UL << GINTMSK_CONIDSTSCHNGM_Pos)     // 0x10000000
+#define GINTMSK_CONIDSTSCHNGM            GINTMSK_CONIDSTSCHNGM_Msk                // Connector ID status change mask
 #define GINTMSK_DISCINT_Pos              (29U)
 #define GINTMSK_DISCINT_Msk              (0x1UL << GINTMSK_DISCINT_Pos)           // 0x20000000
 #define GINTMSK_DISCINT                  GINTMSK_DISCINT_Msk                      // Disconnect detected interrupt mask
@@ -1109,17 +1313,6 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define GRXSTSP_PKTSTS_Msk               (0xFUL << GRXSTSP_PKTSTS_Pos)            // 0x001E0000
 #define GRXSTSP_PKTSTS                   GRXSTSP_PKTSTS_Msk                       // OUT EP interrupt mask bits
 
-#define GRXSTS_PKTSTS_GLOBALOUTNAK       1
-#define GRXSTS_PKTSTS_OUTRX              2
-#define GRXSTS_PKTSTS_HCHIN              2
-#define GRXSTS_PKTSTS_OUTDONE            3
-#define GRXSTS_PKTSTS_HCHIN_XFER_COMP    3
-#define GRXSTS_PKTSTS_SETUPDONE          4
-#define GRXSTS_PKTSTS_DATATOGGLEERR      5
-#define GRXSTS_PKTSTS_SETUPRX            6
-#define GRXSTS_PKTSTS_HCHHALTED          7
-
-
 /********************  Bit definition for DAINTMSK register  ********************/
 #define DAINTMSK_IEPM_Pos                (0U)
 #define DAINTMSK_IEPM_Msk                (0xFFFFUL << DAINTMSK_IEPM_Pos)          // 0x0000FFFF
@@ -1448,56 +1641,53 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define DIEPEACHMSK1_NAKM                DIEPEACHMSK1_NAKM_Msk                    // NAK interrupt mask
 
 /********************  Bit definition for HPRT register  ********************/
-#define HPRT_PCSTS_Pos                   (0U)
-#define HPRT_PCSTS_Msk                   (0x1UL << HPRT_PCSTS_Pos)                // 0x00000001
-#define HPRT_PCSTS                       HPRT_PCSTS_Msk                           // Port connect status
-#define HPRT_PCDET_Pos                   (1U)
-#define HPRT_PCDET_Msk                   (0x1UL << HPRT_PCDET_Pos)                // 0x00000002
-#define HPRT_PCDET                       HPRT_PCDET_Msk                           // Port connect detected
-#define HPRT_PENA_Pos                    (2U)
-#define HPRT_PENA_Msk                    (0x1UL << HPRT_PENA_Pos)                 // 0x00000004
-#define HPRT_PENA                        HPRT_PENA_Msk                            // Port enable
-#define HPRT_PENCHNG_Pos                 (3U)
-#define HPRT_PENCHNG_Msk                 (0x1UL << HPRT_PENCHNG_Pos)              // 0x00000008
-#define HPRT_PENCHNG                     HPRT_PENCHNG_Msk                         // Port enable/disable change
-#define HPRT_POCA_Pos                    (4U)
-#define HPRT_POCA_Msk                    (0x1UL << HPRT_POCA_Pos)                 // 0x00000010
-#define HPRT_POCA                        HPRT_POCA_Msk                            // Port overcurrent active
-#define HPRT_POCCHNG_Pos                 (5U)
-#define HPRT_POCCHNG_Msk                 (0x1UL << HPRT_POCCHNG_Pos)              // 0x00000020
-#define HPRT_POCCHNG                     HPRT_POCCHNG_Msk                         // Port overcurrent change
-#define HPRT_PRES_Pos                    (6U)
-#define HPRT_PRES_Msk                    (0x1UL << HPRT_PRES_Pos)                 // 0x00000040
-#define HPRT_PRES                        HPRT_PRES_Msk                            // Port resume
-#define HPRT_PSUSP_Pos                   (7U)
-#define HPRT_PSUSP_Msk                   (0x1UL << HPRT_PSUSP_Pos)                // 0x00000080
-#define HPRT_PSUSP                       HPRT_PSUSP_Msk                           // Port suspend
-#define HPRT_PRST_Pos                    (8U)
-#define HPRT_PRST_Msk                    (0x1UL << HPRT_PRST_Pos)                 // 0x00000100
-#define HPRT_PRST                        HPRT_PRST_Msk                            // Port reset
-
-#define HPRT_PLSTS_Pos                   (10U)
-#define HPRT_PLSTS_Msk                   (0x3UL << HPRT_PLSTS_Pos)                // 0x00000C00
-#define HPRT_PLSTS                       HPRT_PLSTS_Msk                           // Port line status
-#define HPRT_PLSTS_0                     (0x1UL << HPRT_PLSTS_Pos)                // 0x00000400
-#define HPRT_PLSTS_1                     (0x2UL << HPRT_PLSTS_Pos)                // 0x00000800
-#define HPRT_PPWR_Pos                    (12U)
-#define HPRT_PPWR_Msk                    (0x1UL << HPRT_PPWR_Pos)                 // 0x00001000
-#define HPRT_PPWR                        HPRT_PPWR_Msk                            // Port power
-
-#define HPRT_PTCTL_Pos                   (13U)
-#define HPRT_PTCTL_Msk                   (0xFUL << HPRT_PTCTL_Pos)                // 0x0001E000
-#define HPRT_PTCTL                       HPRT_PTCTL_Msk                           // Port test control
-#define HPRT_PTCTL_0                     (0x1UL << HPRT_PTCTL_Pos)                // 0x00002000
-#define HPRT_PTCTL_1                     (0x2UL << HPRT_PTCTL_Pos)                // 0x00004000
-#define HPRT_PTCTL_2                     (0x4UL << HPRT_PTCTL_Pos)                // 0x00008000
-#define HPRT_PTCTL_3                     (0x8UL << HPRT_PTCTL_Pos)                // 0x00010000
-
-#define HPRT_PSPD_Pos                    (17U)
-#define HPRT_PSPD_Msk                    (0x3UL << HPRT_PSPD_Pos)                 // 0x00060000
-#define HPRT_PSPD                        HPRT_PSPD_Msk                            // Port speed
-#define HPRT_PSPD_0                      (0x1UL << HPRT_PSPD_Pos)                 // 0x00020000
-#define HPRT_PSPD_1                      (0x2UL << HPRT_PSPD_Pos)                 // 0x00040000
+#define HPRT_CONN_STATUS_Pos           (0U)
+#define HPRT_CONN_STATUS_Msk           (0x1UL << HPRT_CONN_STATUS_Pos)         // 0x00000001
+#define HPRT_CONN_STATUS               HPRT_CONN_STATUS_Msk                    // Port connect status
+#define HPRT_CONN_DETECT_Pos           (1U)
+#define HPRT_CONN_DETECT_Msk           (0x1UL << HPRT_CONN_DETECT_Pos)         // 0x00000002
+#define HPRT_CONN_DETECT               HPRT_CONN_DETECT_Msk                    // Port connect detected
+#define HPRT_ENABLE_Pos                (2U)
+#define HPRT_ENABLE_Msk                (0x1UL << HPRT_ENABLE_Pos)              // 0x00000004
+#define HPRT_ENABLE                    HPRT_ENABLE_Msk                         // Port enable
+#define HPRT_ENABLE_CHANGE_Pos         (3U)
+#define HPRT_ENABLE_CHANGE_Msk         (0x1UL << HPRT_ENABLE_CHANGE_Pos)       // 0x00000008
+#define HPRT_ENABLE_CHANGE             HPRT_ENABLE_CHANGE_Msk                  // Port enable/disable change
+#define HPRT_OVER_CURRENT_ACTIVE_Pos   (4U)
+#define HPRT_OVER_CURRENT_ACTIVE_Msk   (0x1UL << HPRT_OVER_CURRENT_ACTIVE_Pos) // 0x00000010
+#define HPRT_OVER_CURRENT_ACTIVE       HPRT_OVER_CURRENT_ACTIVE_Msk            // Port overcurrent active
+#define HPRT_OVER_CURRENT_CHANGE_Pos   (5U)
+#define HPRT_OVER_CURRENT_CHANGE_Msk   (0x1UL << HPRT_OVER_CURRENT_CHANGE_Pos) // 0x00000020
+#define HPRT_OVER_CURRENT_CHANGE       HPRT_OVER_CURRENT_CHANGE_Msk            // Port overcurrent change
+#define HPRT_RESUME_Pos                (6U)
+#define HPRT_RESUME_Msk                (0x1UL << HPRT_RESUME_Pos)              // 0x00000040
+#define HPRT_RESUME                    HPRT_RESUME_Msk                         // Port resume
+#define HPRT_SUSPEND_Pos               (7U)
+#define HPRT_SUSPEND_Msk               (0x1UL << HPRT_SUSPEND_Pos)             // 0x00000080
+#define HPRT_SUSPEND                   HPRT_SUSPEND_Msk                        // Port suspend
+#define HPRT_RESET_Pos                 (8U)
+#define HPRT_RESET_Msk                 (0x1UL << HPRT_RESET_Pos)               // 0x00000100
+#define HPRT_RESET                     HPRT_RESET_Msk                          // Port reset
+#define HPRT_LINE_STATUS_Pos           (10U)
+#define HPRT_LINE_STATUS_Msk           (0x3UL << HPRT_LINE_STATUS_Pos)         // 0x00000C00
+#define HPRT_LINE_STATUS               HPRT_LINE_STATUS_Msk                    // Port line status
+#define HPRT_LINE_STATUS_0             (0x1UL << HPRT_LINE_STATUS_Pos)         // 0x00000400
+#define HPRT_LINE_STATUS_1             (0x2UL << HPRT_LINE_STATUS_Pos)         // 0x00000800
+#define HPRT_POWER_Pos                 (12U)
+#define HPRT_POWER_Msk                 (0x1UL << HPRT_POWER_Pos)               // 0x00001000
+#define HPRT_POWER                     HPRT_POWER_Msk                          // Port power
+#define HPRT_TEST_CONTROL_Pos          (13U)
+#define HPRT_TEST_CONTROL_Msk          (0xFUL << HPRT_TEST_CONTROL_Pos)        // 0x0001E000
+#define HPRT_TEST_CONTROL              HPRT_TEST_CONTROL_Msk                   // Port test control
+#define HPRT_TEST_CONTROL_0            (0x1UL << HPRT_TEST_CONTROL_Pos)        // 0x00002000
+#define HPRT_TEST_CONTROL_1            (0x2UL << HPRT_TEST_CONTROL_Pos)        // 0x00004000
+#define HPRT_TEST_CONTROL_2            (0x4UL << HPRT_TEST_CONTROL_Pos)        // 0x00008000
+#define HPRT_TEST_CONTROL_3            (0x8UL << HPRT_TEST_CONTROL_Pos)        // 0x00010000
+#define HPRT_SPEED_Pos                 (17U)
+#define HPRT_SPEED_Msk                 (0x3UL << HPRT_SPEED_Pos)               // 0x00060000
+#define HPRT_SPEED                     HPRT_SPEED_Msk                          // Port speed
+#define HPRT_SPEED_0                   (0x1UL << HPRT_SPEED_Pos)               // 0x00020000
+#define HPRT_SPEED_1                   (0x2UL << HPRT_SPEED_Pos)               // 0x00040000
 
 /********************  Bit definition for DOEPEACHMSK1 register  ********************/
 #define DOEPEACHMSK1_XFRCM_Pos           (0U)
@@ -1679,15 +1869,15 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define HCSPLT_SPLITEN                   HCSPLT_SPLITEN_Msk                       // Split enable
 
 /********************  Bit definition for HCINT register  ********************/
-#define HCINT_XFRC_Pos                   (0U)
-#define HCINT_XFRC_Msk                   (0x1UL << HCINT_XFRC_Pos)                // 0x00000001
-#define HCINT_XFRC                       HCINT_XFRC_Msk                           // Transfer completed
-#define HCINT_CHH_Pos                    (1U)
-#define HCINT_CHH_Msk                    (0x1UL << HCINT_CHH_Pos)                 // 0x00000002
-#define HCINT_CHH                        HCINT_CHH_Msk                            // Channel halted
-#define HCINT_AHBERR_Pos                 (2U)
-#define HCINT_AHBERR_Msk                 (0x1UL << HCINT_AHBERR_Pos)              // 0x00000004
-#define HCINT_AHBERR                     HCINT_AHBERR_Msk                         // AHB error
+#define HCINT_XFER_COMPLETE_Pos          (0U)
+#define HCINT_XFER_COMPLETE_Msk          (0x1UL << HCINT_XFER_COMPLETE_Pos)       // 0x00000001
+#define HCINT_XFER_COMPLETE              HCINT_XFER_COMPLETE_Msk                  // Transfer completed
+#define HCINT_HALTED_Pos                 (1U)
+#define HCINT_HALTED_Msk                 (0x1UL << HCINT_HALTED_Pos)              // 0x00000002
+#define HCINT_HALTED                     HCINT_HALTED_Msk                         // Channel halted
+#define HCINT_AHB_ERR_Pos                (2U)
+#define HCINT_AHB_ERR_Msk                (0x1UL << HCINT_AHB_ERR_Pos)              // 0x00000004
+#define HCINT_AHB_ERR                     HCINT_AHB_ERR_Msk                         // AHB error
 #define HCINT_STALL_Pos                  (3U)
 #define HCINT_STALL_Msk                  (0x1UL << HCINT_STALL_Pos)               // 0x00000008
 #define HCINT_STALL                      HCINT_STALL_Msk                          // STALL response received interrupt
@@ -1700,18 +1890,27 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define HCINT_NYET_Pos                   (6U)
 #define HCINT_NYET_Msk                   (0x1UL << HCINT_NYET_Pos)                // 0x00000040
 #define HCINT_NYET                       HCINT_NYET_Msk                           // Response received interrupt
-#define HCINT_TXERR_Pos                  (7U)
-#define HCINT_TXERR_Msk                  (0x1UL << HCINT_TXERR_Pos)               // 0x00000080
-#define HCINT_TXERR                      HCINT_TXERR_Msk                          // Transaction error
-#define HCINT_BBERR_Pos                  (8U)
-#define HCINT_BBERR_Msk                  (0x1UL << HCINT_BBERR_Pos)               // 0x00000100
-#define HCINT_BBERR                      HCINT_BBERR_Msk                          // Babble error
-#define HCINT_FRMOR_Pos                  (9U)
-#define HCINT_FRMOR_Msk                  (0x1UL << HCINT_FRMOR_Pos)               // 0x00000200
-#define HCINT_FRMOR                      HCINT_FRMOR_Msk                          // Frame overrun
-#define HCINT_DTERR_Pos                  (10U)
-#define HCINT_DTERR_Msk                  (0x1UL << HCINT_DTERR_Pos)               // 0x00000400
-#define HCINT_DTERR                      HCINT_DTERR_Msk                          // Data toggle error
+#define HCINT_XACT_ERR_Pos               (7U)
+#define HCINT_XACT_ERR_Msk               (0x1UL << HCINT_XACT_ERR_Pos)            // 0x00000080
+#define HCINT_XACT_ERR                   HCINT_XACT_ERR_Msk                       // Transaction error
+#define HCINT_BABBLE_ERR_Pos             (8U)
+#define HCINT_BABBLE_ERR_Msk             (0x1UL << HCINT_BABBLE_ERR_Pos)          // 0x00000100
+#define HCINT_BABBLE_ERR                 HCINT_BABBLE_ERR_Msk                     // Babble error
+#define HCINT_FARME_OVERRUN_Pos          (9U)
+#define HCINT_FARME_OVERRUN_Msk          (0x1UL << HCINT_FARME_OVERRUN_Pos)       // 0x00000200
+#define HCINT_FARME_OVERRUN              HCINT_FARME_OVERRUN_Msk                  // Frame overrun
+#define HCINT_DATATOGGLE_ERR_Pos         (10U)
+#define HCINT_DATATOGGLE_ERR_Msk         (0x1UL << HCINT_DATATOGGLE_ERR_Pos)      // 0x00000400
+#define HCINT_DATATOGGLE_ERR             HCINT_DATATOGGLE_ERR_Msk                 // Data toggle error
+#define HCINT_BUFFER_NA_Pos             (11U)
+#define HCINT_BUFFER_NA_Msk             (0x1UL << HCINT_BUFFER_NA_Pos)          // 0x00000800
+#define HCINT_BUFFER_NA                 HCINT_BUFFER_NA_Msk                     // Buffer not available interrupt
+#define HCINT_XCS_XACT_ERR_Pos           (12U)
+#define HCINT_XCS_XACT_ERR_Msk           (0x1UL << HCINT_XCS_XACT_ERR_Pos)        // 0x00001000
+#define HCINT_XCS_XACT_ERR               HCINT_XCS_XACT_ERR_Msk                   // Excessive transaction error
+#define HCINT_DESC_ROLLOVER_Pos          (13U)
+#define HCINT_DESC_ROLLOVER_Msk          (0x1UL << HCINT_DESC_ROLLOVER_Pos)       // 0x00002000
+#define HCINT_DESC_ROLLOVER              HCINT_DESC_ROLLOVER_Msk                  // Descriptor rollover
 
 /********************  Bit definition for DIEPINT register  ********************/
 #define DIEPINT_XFRC_Pos                 (0U)
@@ -1754,41 +1953,6 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define DIEPINT_NAK_Msk                  (0x1UL << DIEPINT_NAK_Pos)               // 0x00002000
 #define DIEPINT_NAK                      DIEPINT_NAK_Msk                          // NAK interrupt
 
-/********************  Bit definition for HCINTMSK register  ********************/
-#define HCINTMSK_XFRCM_Pos               (0U)
-#define HCINTMSK_XFRCM_Msk               (0x1UL << HCINTMSK_XFRCM_Pos)            // 0x00000001
-#define HCINTMSK_XFRCM                   HCINTMSK_XFRCM_Msk                       // Transfer completed mask
-#define HCINTMSK_CHHM_Pos                (1U)
-#define HCINTMSK_CHHM_Msk                (0x1UL << HCINTMSK_CHHM_Pos)             // 0x00000002
-#define HCINTMSK_CHHM                    HCINTMSK_CHHM_Msk                        // Channel halted mask
-#define HCINTMSK_AHBERR_Pos              (2U)
-#define HCINTMSK_AHBERR_Msk              (0x1UL << HCINTMSK_AHBERR_Pos)           // 0x00000004
-#define HCINTMSK_AHBERR                  HCINTMSK_AHBERR_Msk                      // AHB error
-#define HCINTMSK_STALLM_Pos              (3U)
-#define HCINTMSK_STALLM_Msk              (0x1UL << HCINTMSK_STALLM_Pos)           // 0x00000008
-#define HCINTMSK_STALLM                  HCINTMSK_STALLM_Msk                      // STALL response received interrupt mask
-#define HCINTMSK_NAKM_Pos                (4U)
-#define HCINTMSK_NAKM_Msk                (0x1UL << HCINTMSK_NAKM_Pos)             // 0x00000010
-#define HCINTMSK_NAKM                    HCINTMSK_NAKM_Msk                        // NAK response received interrupt mask
-#define HCINTMSK_ACKM_Pos                (5U)
-#define HCINTMSK_ACKM_Msk                (0x1UL << HCINTMSK_ACKM_Pos)             // 0x00000020
-#define HCINTMSK_ACKM                    HCINTMSK_ACKM_Msk                        // ACK response received/transmitted interrupt mask
-#define HCINTMSK_NYET_Pos                (6U)
-#define HCINTMSK_NYET_Msk                (0x1UL << HCINTMSK_NYET_Pos)             // 0x00000040
-#define HCINTMSK_NYET                    HCINTMSK_NYET_Msk                        // response received interrupt mask
-#define HCINTMSK_TXERRM_Pos              (7U)
-#define HCINTMSK_TXERRM_Msk              (0x1UL << HCINTMSK_TXERRM_Pos)           // 0x00000080
-#define HCINTMSK_TXERRM                  HCINTMSK_TXERRM_Msk                      // Transaction error mask
-#define HCINTMSK_BBERRM_Pos              (8U)
-#define HCINTMSK_BBERRM_Msk              (0x1UL << HCINTMSK_BBERRM_Pos)           // 0x00000100
-#define HCINTMSK_BBERRM                  HCINTMSK_BBERRM_Msk                      // Babble error mask
-#define HCINTMSK_FRMORM_Pos              (9U)
-#define HCINTMSK_FRMORM_Msk              (0x1UL << HCINTMSK_FRMORM_Pos)           // 0x00000200
-#define HCINTMSK_FRMORM                  HCINTMSK_FRMORM_Msk                      // Frame overrun mask
-#define HCINTMSK_DTERRM_Pos              (10U)
-#define HCINTMSK_DTERRM_Msk              (0x1UL << HCINTMSK_DTERRM_Pos)           // 0x00000400
-#define HCINTMSK_DTERRM                  HCINTMSK_DTERRM_Msk                      // Data toggle error mask
-
 /********************  Bit definition for DIEPTSIZ register  ********************/
 
 #define DIEPTSIZ_XFRSIZ_Pos              (0U)
@@ -1810,11 +1974,9 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define HCTSIZ_DOPING_Pos                (31U)
 #define HCTSIZ_DOPING_Msk                (0x1UL << HCTSIZ_DOPING_Pos)             // 0x80000000
 #define HCTSIZ_DOPING                    HCTSIZ_DOPING_Msk                        // Do PING
-#define HCTSIZ_DPID_Pos                  (29U)
-#define HCTSIZ_DPID_Msk                  (0x3UL << HCTSIZ_DPID_Pos)               // 0x60000000
-#define HCTSIZ_DPID                      HCTSIZ_DPID_Msk                          // Data PID
-#define HCTSIZ_DPID_0                    (0x1UL << HCTSIZ_DPID_Pos)               // 0x20000000
-#define HCTSIZ_DPID_1                    (0x2UL << HCTSIZ_DPID_Pos)               // 0x40000000
+#define HCTSIZ_PID_Pos                  (29U)
+#define HCTSIZ_PID_Msk                  (0x3UL << HCTSIZ_PID_Pos)               // 0x60000000
+#define HCTSIZ_PID                      HCTSIZ_PID_Msk                          // Data PID
 
 /********************  Bit definition for DIEPDMA register  ********************/
 #define DIEPDMA_DMAADDR_Pos              (0U)
@@ -1973,32 +2135,32 @@ TU_VERIFY_STATIC(offsetof(dwc2_regs_t, fifo   ) == 0x1000, "incorrect size");
 #define DOEPTSIZ_STUPCNT_1               (0x2UL << DOEPTSIZ_STUPCNT_Pos)          // 0x40000000
 
 /********************  Bit definition for PCGCTL register  ********************/
-#define PCGCTL_IF_DEV_MODE              TU_BIT(31)
-#define PCGCTL_P2HD_PRT_SPD_MASK        (0x3ul << 29)
-#define PCGCTL_P2HD_PRT_SPD_SHIFT       29
-#define PCGCTL_P2HD_DEV_ENUM_SPD_MASK   (0x3ul << 27)
-#define PCGCTL_P2HD_DEV_ENUM_SPD_SHIFT  27
-#define PCGCTL_MAC_DEV_ADDR_MASK        (0x7ful << 20)
-#define PCGCTL_MAC_DEV_ADDR_SHIFT       20
-#define PCGCTL_MAX_TERMSEL              TU_BIT(19)
-#define PCGCTL_MAX_XCVRSELECT_MASK      (0x3ul << 17)
-#define PCGCTL_MAX_XCVRSELECT_SHIFT     17
-#define PCGCTL_PORT_POWER               TU_BIT(16)
-#define PCGCTL_PRT_CLK_SEL_MASK         (0x3ul << 14)
-#define PCGCTL_PRT_CLK_SEL_SHIFT        14
-#define PCGCTL_ESS_REG_RESTORED         TU_BIT(13)
-#define PCGCTL_EXTND_HIBER_SWITCH       TU_BIT(12)
-#define PCGCTL_EXTND_HIBER_PWRCLMP      TU_BIT(11)
-#define PCGCTL_ENBL_EXTND_HIBER         TU_BIT(10)
-#define PCGCTL_RESTOREMODE              TU_BIT(9)
-#define PCGCTL_RESETAFTSUSP             TU_BIT(8)
-#define PCGCTL_DEEP_SLEEP               TU_BIT(7)
-#define PCGCTL_PHY_IN_SLEEP             TU_BIT(6)
-#define PCGCTL_ENBL_SLEEP_GATING        TU_BIT(5)
-#define PCGCTL_RSTPDWNMODULE            TU_BIT(3)
-#define PCGCTL_PWRCLMP                  TU_BIT(2)
-#define PCGCTL_GATEHCLK                 TU_BIT(1)
-#define PCGCTL_STOPPCLK                 TU_BIT(0)
+#define PCGCCTL_IF_DEV_MODE              TU_BIT(31)
+#define PCGCCTL_P2HD_PRT_SPD_MASK        (0x3ul << 29)
+#define PCGCCTL_P2HD_PRT_SPD_SHIFT       29
+#define PCGCCTL_P2HD_DEV_ENUM_SPD_MASK   (0x3ul << 27)
+#define PCGCCTL_P2HD_DEV_ENUM_SPD_SHIFT  27
+#define PCGCCTL_MAC_DEV_ADDR_MASK        (0x7ful << 20)
+#define PCGCCTL_MAC_DEV_ADDR_SHIFT       20
+#define PCGCCTL_MAX_TERMSEL              TU_BIT(19)
+#define PCGCCTL_MAX_XCVRSELECT_MASK      (0x3ul << 17)
+#define PCGCCTL_MAX_XCVRSELECT_SHIFT     17
+#define PCGCCTL_PORT_POWER               TU_BIT(16)
+#define PCGCCTL_PRT_CLK_SEL_MASK         (0x3ul << 14)
+#define PCGCCTL_PRT_CLK_SEL_SHIFT        14
+#define PCGCCTL_ESS_REG_RESTORED         TU_BIT(13)
+#define PCGCCTL_EXTND_HIBER_SWITCH       TU_BIT(12)
+#define PCGCCTL_EXTND_HIBER_PWRCLMP      TU_BIT(11)
+#define PCGCCTL_ENBL_EXTND_HIBER         TU_BIT(10)
+#define PCGCCTL_RESTOREMODE              TU_BIT(9)
+#define PCGCCTL_RESETAFTSUSP             TU_BIT(8)
+#define PCGCCTL_DEEP_SLEEP               TU_BIT(7)
+#define PCGCCTL_PHY_IN_SLEEP             TU_BIT(6)
+#define PCGCCTL_ENBL_SLEEP_GATING        TU_BIT(5)
+#define PCGCCTL_RSTPDWNMODULE            TU_BIT(3)
+#define PCGCCTL_PWRCLMP                  TU_BIT(2)
+#define PCGCCTL_GATEHCLK                 TU_BIT(1)
+#define PCGCCTL_STOPPCLK                 TU_BIT(0)
 
 #define PCGCTL1_TIMER                   (0x3ul << 1)
 #define PCGCTL1_GATEEN                  TU_BIT(0)
diff --git a/src/portable/synopsys/dwc2/hcd_dwc2.c b/src/portable/synopsys/dwc2/hcd_dwc2.c
new file mode 100644
index 000000000..f9fc5ca8e
--- /dev/null
+++ b/src/portable/synopsys/dwc2/hcd_dwc2.c
@@ -0,0 +1,1340 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2024 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#include "tusb_option.h"
+
+#if CFG_TUH_ENABLED && defined(TUP_USBIP_DWC2)
+
+// Debug level for DWC2
+#define DWC2_DEBUG    2
+
+#include "host/hcd.h"
+#include "dwc2_common.h"
+
+// Max number of endpoints application can open, can be larger than DWC2_CHANNEL_COUNT_MAX
+#ifndef CFG_TUH_DWC2_ENDPOINT_MAX
+#define CFG_TUH_DWC2_ENDPOINT_MAX 16
+#endif
+
+#define DWC2_CHANNEL_COUNT_MAX    16 // absolute max channel count
+#define DWC2_CHANNEL_COUNT(_dwc2) tu_min8((_dwc2)->ghwcfg2_bm.num_host_ch + 1, DWC2_CHANNEL_COUNT_MAX)
+
+TU_VERIFY_STATIC(CFG_TUH_DWC2_ENDPOINT_MAX <= 255, "currently only use 8-bit for index");
+
+enum {
+  HPRT_W1_MASK = HPRT_CONN_DETECT | HPRT_ENABLE | HPRT_ENABLE_CHANGE | HPRT_OVER_CURRENT_CHANGE | HPRT_SUSPEND
+};
+
+enum {
+  HCD_XFER_ERROR_MAX = 3
+};
+
+enum {
+  HCD_XFER_PERIOD_SPLIT_NYET_MAX = 3
+};
+
+//--------------------------------------------------------------------
+//
+//--------------------------------------------------------------------
+
+// Host driver struct for each opened endpoint
+typedef struct {
+  union {
+    uint32_t hcchar;
+    dwc2_channel_char_t hcchar_bm;
+  };
+  union {
+    uint32_t hcsplt;
+    dwc2_channel_split_t hcsplt_bm;
+  };
+
+  struct TU_ATTR_PACKED {
+    uint32_t uframe_interval : 18; // micro-frame interval
+    uint32_t speed    : 2;
+    uint32_t next_pid : 2;
+    uint32_t do_ping  : 1;
+    // uint32_t : 9;
+  };
+
+  uint32_t uframe_countdown; // micro-frame count down to transfer for periodic, only need 18-bit
+
+  uint8_t* buffer;
+  uint16_t buflen;
+} hcd_endpoint_t;
+
+// Additional info for each channel when it is active
+typedef struct {
+  volatile bool allocated;
+  uint8_t ep_id;
+  struct TU_ATTR_PACKED {
+    uint8_t err_count : 3;
+    uint8_t period_split_nyet_count : 3;
+    uint8_t halted_nyet : 1;
+    uint8_t halted_sof_schedule : 1;
+  };
+  uint8_t result;
+
+  uint16_t xferred_bytes;  // bytes that accumulate transferred though USB bus for the whole hcd_edpt_xfer(), which can
+                           // be composed of multiple channel_xfer_start() (retry with NAK/NYET)
+  uint16_t fifo_bytes;     // bytes written/read from/to FIFO (may not be transferred on USB bus).
+} hcd_xfer_t;
+
+typedef struct {
+  hcd_xfer_t xfer[DWC2_CHANNEL_COUNT_MAX];
+  hcd_endpoint_t edpt[CFG_TUH_DWC2_ENDPOINT_MAX];
+} hcd_data_t;
+
+hcd_data_t _hcd_data;
+
+//--------------------------------------------------------------------
+//
+//--------------------------------------------------------------------
+TU_ATTR_ALWAYS_INLINE static inline tusb_speed_t hprt_speed_get(dwc2_regs_t* dwc2) {
+  tusb_speed_t speed;
+  switch(dwc2->hprt_bm.speed) {
+    case HPRT_SPEED_HIGH: speed = TUSB_SPEED_HIGH; break;
+    case HPRT_SPEED_FULL: speed = TUSB_SPEED_FULL; break;
+    case HPRT_SPEED_LOW : speed = TUSB_SPEED_LOW ; break;
+    default:
+      speed = TUSB_SPEED_INVALID;
+      TU_BREAKPOINT();
+    break;
+  }
+  return speed;
+}
+
+TU_ATTR_ALWAYS_INLINE static inline bool dma_host_enabled(const dwc2_regs_t* dwc2) {
+  (void) dwc2;
+  // Internal DMA only
+  return CFG_TUH_DWC2_DMA_ENABLE && dwc2->ghwcfg2_bm.arch == GHWCFG2_ARCH_INTERNAL_DMA;
+}
+
+// Allocate a channel for new transfer
+TU_ATTR_ALWAYS_INLINE static inline uint8_t channel_alloc(dwc2_regs_t* dwc2) {
+  const uint8_t max_channel = DWC2_CHANNEL_COUNT(dwc2);
+  for (uint8_t ch_id = 0; ch_id < max_channel; ch_id++) {
+    hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+    if (!xfer->allocated) {
+      tu_memclr(xfer, sizeof(hcd_xfer_t));
+      xfer->allocated = true;
+      return ch_id;
+    }
+  }
+  return TUSB_INDEX_INVALID_8;
+}
+
+// Check if is periodic (interrupt/isochronous)
+TU_ATTR_ALWAYS_INLINE static inline bool edpt_is_periodic(uint8_t ep_type) {
+  return ep_type == HCCHAR_EPTYPE_INTERRUPT || ep_type == HCCHAR_EPTYPE_ISOCHRONOUS;
+}
+
+TU_ATTR_ALWAYS_INLINE static inline uint8_t req_queue_avail(const dwc2_regs_t* dwc2, bool is_period) {
+  if (is_period) {
+    return dwc2->hptxsts_bm.req_queue_available;
+  } else {
+    return dwc2->hnptxsts_bm.req_queue_available;
+  }
+}
+
+TU_ATTR_ALWAYS_INLINE static inline void channel_dealloc(dwc2_regs_t* dwc2, uint8_t ch_id) {
+  hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+  xfer->allocated = false;
+  dwc2->haintmsk &= ~TU_BIT(ch_id);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline bool channel_disable(const dwc2_regs_t* dwc2, dwc2_channel_t* channel) {
+  // disable also require request queue
+  TU_ASSERT(req_queue_avail(dwc2, edpt_is_periodic(channel->hcchar_bm.ep_type)));
+  channel->hcintmsk |= HCINT_HALTED;
+  channel->hcchar |= HCCHAR_CHDIS | HCCHAR_CHENA; // must set both CHDIS and CHENA
+  return true;
+}
+
+// attempt to send IN token to receive data
+TU_ATTR_ALWAYS_INLINE static inline bool channel_send_in_token(const dwc2_regs_t* dwc2, dwc2_channel_t* channel) {
+  TU_ASSERT(req_queue_avail(dwc2, edpt_is_periodic(channel->hcchar_bm.ep_type)));
+  channel->hcchar |= HCCHAR_CHENA;
+  return true;
+}
+
+// Find currently enabled channel. Note: EP0 is bidirectional
+TU_ATTR_ALWAYS_INLINE static inline uint8_t channel_find_enabled(dwc2_regs_t* dwc2, uint8_t dev_addr, uint8_t ep_num, uint8_t ep_dir) {
+  const uint8_t max_channel = DWC2_CHANNEL_COUNT(dwc2);
+  for (uint8_t ch_id = 0; ch_id < max_channel; ch_id++) {
+    if (_hcd_data.xfer[ch_id].allocated) {
+      const dwc2_channel_char_t hcchar_bm = dwc2->channel[ch_id].hcchar_bm;
+      if (hcchar_bm.dev_addr == dev_addr && hcchar_bm.ep_num == ep_num && (ep_num == 0 || hcchar_bm.ep_dir == ep_dir)) {
+        return ch_id;
+      }
+    }
+  }
+  return TUSB_INDEX_INVALID_8;
+}
+
+
+// Allocate a new endpoint
+TU_ATTR_ALWAYS_INLINE static inline uint8_t edpt_alloc(void) {
+  for (uint32_t i = 0; i < CFG_TUH_DWC2_ENDPOINT_MAX; i++) {
+    hcd_endpoint_t* edpt = &_hcd_data.edpt[i];
+    if (edpt->hcchar_bm.enable == 0) {
+      tu_memclr(edpt, sizeof(hcd_endpoint_t));
+      edpt->hcchar_bm.enable = 1;
+      return i;
+    }
+  }
+  return TUSB_INDEX_INVALID_8;
+}
+
+// Find a endpoint that is opened previously with hcd_edpt_open()
+// Note: EP0 is bidirectional
+TU_ATTR_ALWAYS_INLINE static inline uint8_t edpt_find_opened(uint8_t dev_addr, uint8_t ep_num, uint8_t ep_dir) {
+  for (uint8_t i = 0; i < (uint8_t)CFG_TUH_DWC2_ENDPOINT_MAX; i++) {
+    const dwc2_channel_char_t* hcchar_bm = &_hcd_data.edpt[i].hcchar_bm;
+    if (hcchar_bm->enable && hcchar_bm->dev_addr == dev_addr &&
+        hcchar_bm->ep_num == ep_num && (ep_num == 0 || hcchar_bm->ep_dir == ep_dir)) {
+      return i;
+    }
+  }
+  return TUSB_INDEX_INVALID_8;
+}
+
+TU_ATTR_ALWAYS_INLINE static inline uint16_t cal_packet_count(uint16_t len, uint16_t ep_size) {
+  if (len == 0) {
+    return 1;
+  } else {
+    return tu_div_ceil(len, ep_size);
+  }
+}
+
+TU_ATTR_ALWAYS_INLINE static inline uint8_t cal_next_pid(uint8_t pid, uint8_t packet_count) {
+  if (packet_count & 0x01) {
+    return pid ^ 0x02; // toggle DATA0 and DATA1
+  } else {
+    return pid;
+  }
+}
+
+//--------------------------------------------------------------------
+//
+//--------------------------------------------------------------------
+
+/* USB Data FIFO Layout
+
+  The FIFO is split up into
+  - EPInfo: for storing DMA metadata (check dcd_dwc2.c for more details)
+  - 1 RX FIFO: for receiving data
+  - 1 TX FIFO for non-periodic (NPTX)
+  - 1 TX FIFO for periodic (PTX)
+
+  We allocated TX FIFO from top to bottom (using top pointer), this to allow the RX FIFO to grow dynamically which is
+  possible since the free space is located between the RX and TX FIFOs.
+
+   ----------------- ep_fifo_size
+  |    HCDMAn    |
+  |--------------|-- gdfifocfg.EPINFOBASE (max is ghwcfg3.dfifo_depth)
+  | Non-Periodic |
+  |   TX FIFO    |
+  |--------------|--- GNPTXFSIZ.addr (fixed size)
+  |   Periodic   |
+  |   TX FIFO    |
+  |--------------|--- HPTXFSIZ.addr (expandable downward)
+  |    FREE      |
+  |              |
+  |--------------|-- GRXFSIZ (expandable upward)
+  |  RX FIFO     |
+  ---------------- 0
+*/
+
+/* Programming Guide 2.1.2 FIFO RAM allocation
+ * RX
+ * - Largest-EPsize/4 + 2 (status info). recommended x2 if high bandwidth or multiple ISO are used.
+ * - 2 for transfer complete and channel halted status
+ * - 1 for each Control/Bulk out endpoint to Handle NAK/NYET (i.e max is number of host channel)
+ *
+ * TX non-periodic (NPTX)
+ * - At least largest-EPsize/4, recommended x2
+ *
+ * TX periodic (PTX)
+ * - At least largest-EPsize*MulCount/4 (MulCount up to 3 for high-bandwidth ISO/interrupt)
+*/
+static void dfifo_host_init(uint8_t rhport) {
+  const dwc2_controller_t* dwc2_controller = &_dwc2_controller[rhport];
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+
+  // Scatter/Gather DMA mode is not yet supported. Buffer DMA only need 1 words per channel
+  const bool is_dma = dma_host_enabled(dwc2);
+  uint16_t dfifo_top = dwc2_controller->ep_fifo_size/4;
+  if (is_dma) {
+    dfifo_top -= dwc2->ghwcfg2_bm.num_host_ch;
+  }
+
+  // fixed allocation for now, improve later:
+    // - ptx_largest is limited to 256 for FS since most FS core only has 1024 bytes total
+  bool is_highspeed = dwc2_core_is_highspeed(dwc2, TUSB_ROLE_HOST);
+  uint32_t nptx_largest = is_highspeed ? TUSB_EPSIZE_BULK_HS/4 : TUSB_EPSIZE_BULK_FS/4;
+  uint32_t ptx_largest = is_highspeed ? TUSB_EPSIZE_ISO_HS_MAX/4 : 256/4;
+
+  uint16_t nptxfsiz = 2 * nptx_largest;
+  uint16_t rxfsiz = 2 * (ptx_largest + 2) + dwc2->ghwcfg2_bm.num_host_ch;
+  TU_ASSERT(dfifo_top >= (nptxfsiz + rxfsiz),);
+  uint16_t ptxfsiz = dfifo_top - (nptxfsiz + rxfsiz);
+
+  dwc2->gdfifocfg = (dfifo_top << GDFIFOCFG_EPINFOBASE_SHIFT) | dfifo_top;
+
+  dfifo_top -= rxfsiz;
+  dwc2->grxfsiz = rxfsiz;
+
+  dfifo_top -= nptxfsiz;
+  dwc2->gnptxfsiz = tu_u32_from_u16(nptxfsiz, dfifo_top);
+
+  dfifo_top -= ptxfsiz;
+  dwc2->hptxfsiz = tu_u32_from_u16(ptxfsiz, dfifo_top);
+}
+
+//--------------------------------------------------------------------+
+// Controller API
+//--------------------------------------------------------------------+
+
+// optional hcd configuration, called by tuh_configure()
+bool hcd_configure(uint8_t rhport, uint32_t cfg_id, const void* cfg_param) {
+  (void) rhport;
+  (void) cfg_id;
+  (void) cfg_param;
+
+  return true;
+}
+
+// Initialize controller to host mode
+bool hcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+  (void) rh_init;
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+
+  tu_memclr(&_hcd_data, sizeof(_hcd_data));
+
+  // Core Initialization
+  const bool is_highspeed = dwc2_core_is_highspeed(dwc2, TUSB_ROLE_HOST);
+  TU_ASSERT(dwc2_core_init(rhport, is_highspeed));
+
+  if (dma_host_enabled(dwc2)) {
+    // DMA seems to be only settable after a core reset, and not possible to switch on-the-fly
+    dwc2->gahbcfg |= GAHBCFG_DMAEN | GAHBCFG_HBSTLEN_2;
+  } else {
+    dwc2->gintmsk |= GINTSTS_RXFLVL;
+  }
+
+  //------------- 3.1 Host Initialization -------------//
+
+  // work at max supported speed
+  dwc2->hcfg &= ~HCFG_FSLS_ONLY;
+
+  // Enable HFIR reload
+  if (dwc2->gsnpsid >= DWC2_CORE_REV_2_92a) {
+    dwc2->hfir |= HFIR_RELOAD_CTRL;
+  }
+
+  // force host mode and wait for mode switch
+  dwc2->gusbcfg = (dwc2->gusbcfg & ~GUSBCFG_FDMOD) | GUSBCFG_FHMOD;
+  while ((dwc2->gintsts & GINTSTS_CMOD) != GINTSTS_CMODE_HOST) {}
+
+  // configure fixed-allocated fifo scheme
+  dfifo_host_init(rhport);
+
+  dwc2->hprt = HPRT_W1_MASK; // clear all write-1-clear bits
+  dwc2->hprt = HPRT_POWER; // turn on VBUS
+
+  // Enable required interrupts
+  dwc2->gintmsk |= GINTSTS_OTGINT | GINTSTS_CONIDSTSCHNG | GINTSTS_HPRTINT | GINTSTS_HCINT;
+
+  // NPTX can hold at least 2 packet, change interrupt level to half-empty
+  uint32_t gahbcfg = dwc2->gahbcfg & ~GAHBCFG_TX_FIFO_EPMTY_LVL;
+  gahbcfg |= GAHBCFG_GINT;   // Enable global interrupt
+  dwc2->gahbcfg = gahbcfg;
+
+  return true;
+}
+
+// Enable USB interrupt
+void hcd_int_enable (uint8_t rhport) {
+  dwc2_int_set(rhport, TUSB_ROLE_HOST, true);
+}
+
+// Disable USB interrupt
+void hcd_int_disable(uint8_t rhport) {
+  dwc2_int_set(rhport, TUSB_ROLE_HOST, false);
+}
+
+// Get frame number (1ms)
+uint32_t hcd_frame_number(uint8_t rhport) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+  return dwc2->hfnum & HFNUM_FRNUM_Msk;
+}
+
+//--------------------------------------------------------------------+
+// Port API
+//--------------------------------------------------------------------+
+
+// Get the current connect status of roothub port
+bool hcd_port_connect_status(uint8_t rhport) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+  return dwc2->hprt & HPRT_CONN_STATUS;
+}
+
+// Reset USB bus on the port. Return immediately, bus reset sequence may not be complete.
+// Some port would require hcd_port_reset_end() to be invoked after 10ms to complete the reset sequence.
+void hcd_port_reset(uint8_t rhport) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+  uint32_t hprt = dwc2->hprt & ~HPRT_W1_MASK;
+  hprt |= HPRT_RESET;
+  dwc2->hprt = hprt;
+}
+
+// Complete bus reset sequence, may be required by some controllers
+void hcd_port_reset_end(uint8_t rhport) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+  uint32_t hprt = dwc2->hprt & ~HPRT_W1_MASK; // skip w1c bits
+  hprt &= ~HPRT_RESET;
+  dwc2->hprt = hprt;
+}
+
+// Get port link speed
+tusb_speed_t hcd_port_speed_get(uint8_t rhport) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+  const tusb_speed_t speed = hprt_speed_get(dwc2);
+  return speed;
+}
+
+// HCD closes all opened endpoints belong to this device
+void hcd_device_close(uint8_t rhport, uint8_t dev_addr) {
+  (void) rhport;
+  for (uint8_t i = 0; i < (uint8_t) CFG_TUH_DWC2_ENDPOINT_MAX; i++) {
+    hcd_endpoint_t* edpt = &_hcd_data.edpt[i];
+    if (edpt->hcchar_bm.enable && edpt->hcchar_bm.dev_addr == dev_addr) {
+      tu_memclr(edpt, sizeof(hcd_endpoint_t));
+    }
+  }
+}
+
+//--------------------------------------------------------------------+
+// Endpoints API
+//--------------------------------------------------------------------+
+
+// Open an endpoint
+bool hcd_edpt_open(uint8_t rhport, uint8_t dev_addr, const tusb_desc_endpoint_t* desc_ep) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+  const tusb_speed_t rh_speed = hprt_speed_get(dwc2);
+
+  hcd_devtree_info_t devtree_info;
+  hcd_devtree_get_info(dev_addr, &devtree_info);
+
+  // find a free endpoint
+  const uint8_t ep_id = edpt_alloc();
+  TU_ASSERT(ep_id < CFG_TUH_DWC2_ENDPOINT_MAX);
+  hcd_endpoint_t* edpt = &_hcd_data.edpt[ep_id];
+
+  dwc2_channel_char_t* hcchar_bm = &edpt->hcchar_bm;
+  hcchar_bm->ep_size         = tu_edpt_packet_size(desc_ep);
+  hcchar_bm->ep_num          = tu_edpt_number(desc_ep->bEndpointAddress);
+  hcchar_bm->ep_dir          = tu_edpt_dir(desc_ep->bEndpointAddress);
+  hcchar_bm->low_speed_dev   = (devtree_info.speed == TUSB_SPEED_LOW) ? 1 : 0;
+  hcchar_bm->ep_type         = desc_ep->bmAttributes.xfer; // ep_type matches TUSB_XFER_*
+  hcchar_bm->err_multi_count = 0;
+  hcchar_bm->dev_addr        = dev_addr;
+  hcchar_bm->odd_frame       = 0;
+  hcchar_bm->disable         = 0;
+  hcchar_bm->enable          = 1;
+
+  dwc2_channel_split_t* hcsplt_bm = &edpt->hcsplt_bm;
+  hcsplt_bm->hub_port        = devtree_info.hub_port;
+  hcsplt_bm->hub_addr        = devtree_info.hub_addr;
+  hcsplt_bm->xact_pos        = 0;
+  hcsplt_bm->split_compl     = 0;
+  hcsplt_bm->split_en        = (rh_speed == TUSB_SPEED_HIGH && devtree_info.speed != TUSB_SPEED_HIGH) ? 1 : 0;
+
+  edpt->speed = devtree_info.speed;
+  edpt->next_pid = HCTSIZ_PID_DATA0;
+  if (desc_ep->bmAttributes.xfer == TUSB_XFER_ISOCHRONOUS) {
+    edpt->uframe_interval = 1 << (desc_ep->bInterval - 1);
+    if (devtree_info.speed == TUSB_SPEED_FULL) {
+      edpt->uframe_interval <<= 3;
+    }
+  } else if (desc_ep->bmAttributes.xfer == TUSB_XFER_INTERRUPT) {
+    if (devtree_info.speed == TUSB_SPEED_HIGH) {
+      edpt->uframe_interval = 1 << (desc_ep->bInterval - 1);
+    } else {
+      edpt->uframe_interval = desc_ep->bInterval << 3;
+    }
+  }
+
+  return true;
+}
+
+// clean up channel after part of transfer is done but the whole urb is not complete
+static void channel_xfer_out_wrapup(dwc2_regs_t* dwc2, uint8_t ch_id) {
+  hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+  dwc2_channel_t* channel = &dwc2->channel[ch_id];
+  hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
+
+  edpt->next_pid = channel->hctsiz_bm.pid; // save PID
+
+  /* Since hctsiz.xfersize field reflects the number of bytes transferred via the AHB, not the USB)
+   * For IN: we can use hctsiz.xfersize as remaining bytes.
+   * For OUT: Must use the hctsiz.pktcnt field to determine how much data has been transferred. This field reflects the
+   * number of packets that have been transferred via the USB. This is always an integral number of packets if the
+   * transfer was halted before its normal completion.
+   */
+  const uint16_t remain_packets = channel->hctsiz_bm.packet_count;
+  const uint16_t total_packets = cal_packet_count(edpt->buflen, channel->hcchar_bm.ep_size);
+  const uint16_t actual_bytes = (total_packets - remain_packets) * channel->hcchar_bm.ep_size;
+
+  xfer->fifo_bytes = 0;
+  xfer->xferred_bytes += actual_bytes;
+  edpt->buffer += actual_bytes;
+  edpt->buflen -= actual_bytes;
+}
+
+static bool channel_xfer_start(dwc2_regs_t* dwc2, uint8_t ch_id) {
+  hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+  hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
+  dwc2_channel_char_t* hcchar_bm = &edpt->hcchar_bm;
+  dwc2_channel_t* channel = &dwc2->channel[ch_id];
+  bool const is_period = edpt_is_periodic(hcchar_bm->ep_type);
+
+  // clear previous state
+  xfer->fifo_bytes = 0;
+
+  // hchar: restore but don't enable yet
+  if (is_period) {
+    hcchar_bm->odd_frame = 1 - (dwc2->hfnum & 1);   // transfer on next frame
+  }
+  channel->hcchar = (edpt->hcchar & ~HCCHAR_CHENA);
+
+  // hctsiz: zero length packet still count as 1
+  const uint16_t packet_count = cal_packet_count(edpt->buflen, hcchar_bm->ep_size);
+  uint32_t hctsiz = (edpt->next_pid << HCTSIZ_PID_Pos) | (packet_count << HCTSIZ_PKTCNT_Pos) | edpt->buflen;
+  if (edpt->do_ping && edpt->speed == TUSB_SPEED_HIGH &&
+     edpt->next_pid != HCTSIZ_PID_SETUP && hcchar_bm->ep_dir == TUSB_DIR_OUT) {
+    hctsiz |= HCTSIZ_DOPING;
+  }
+  channel->hctsiz = hctsiz;
+  edpt->do_ping = 0;
+
+  // pre-calculate next PID based on packet count, adjusted in transfer complete interrupt if short packet
+  if (hcchar_bm->ep_num == 0) {
+    edpt->next_pid = HCTSIZ_PID_DATA1; // control data and status stage always start with DATA1
+  } else {
+    edpt->next_pid = cal_next_pid(edpt->next_pid, packet_count);
+  }
+
+  channel->hcsplt = edpt->hcsplt;
+  channel->hcint = 0xFFFFFFFFU; // clear all channel interrupts
+
+  if (dma_host_enabled(dwc2)) {
+    uint32_t hcintmsk = HCINT_HALTED;
+    channel->hcintmsk = hcintmsk;
+    dwc2->haintmsk |= TU_BIT(ch_id);
+
+    channel->hcdma = (uint32_t) edpt->buffer;
+
+    if (hcchar_bm->ep_dir == TUSB_DIR_IN) {
+      channel_send_in_token(dwc2, channel);
+    } else {
+      channel->hcchar |= HCCHAR_CHENA;
+    }
+  } else {
+    uint32_t hcintmsk = HCINT_NAK | HCINT_XACT_ERR | HCINT_STALL | HCINT_XFER_COMPLETE | HCINT_DATATOGGLE_ERR;
+    if (hcchar_bm->ep_dir == TUSB_DIR_IN) {
+      hcintmsk |= HCINT_BABBLE_ERR | HCINT_DATATOGGLE_ERR | HCINT_ACK;
+    } else {
+      hcintmsk |= HCINT_NYET;
+      if (edpt->hcsplt_bm.split_en) {
+        hcintmsk |= HCINT_ACK;
+      }
+    }
+    channel->hcintmsk = hcintmsk;
+    dwc2->haintmsk |= TU_BIT(ch_id);
+
+    // enable channel for slave mode:
+    // - OUT: it will enable corresponding FIFO channel
+    // - IN : it will write an IN request to the Non-periodic Request Queue, this will have dwc2 trying to send
+    // IN Token. If we got NAK, we have to re-enable the channel again in the interrupt. Due to the way usbh stack only
+    // call hcd_edpt_xfer() once, we will need to manage de-allocate/re-allocate IN channel dynamically.
+    if (hcchar_bm->ep_dir == TUSB_DIR_IN) {
+      channel_send_in_token(dwc2, channel);
+    } else {
+      channel->hcchar |= HCCHAR_CHENA;
+      if (edpt->buflen > 0) {
+        // To prevent conflict with other channel, we will enable periodic/non-periodic FIFO empty interrupt accordingly
+        // And write packet in the interrupt handler
+        dwc2->gintmsk |= (is_period ? GINTSTS_PTX_FIFO_EMPTY : GINTSTS_NPTX_FIFO_EMPTY);
+      }
+    }
+  }
+
+  return true;
+}
+
+// kick-off transfer with an endpoint
+static bool edpt_xfer_kickoff(dwc2_regs_t* dwc2, uint8_t ep_id) {
+  uint8_t ch_id = channel_alloc(dwc2);
+  TU_ASSERT(ch_id < 16); // all channel are in used
+  hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+  xfer->ep_id = ep_id;
+  xfer->result = XFER_RESULT_INVALID;
+
+  return channel_xfer_start(dwc2, ch_id);
+}
+
+// Submit a transfer, when complete hcd_event_xfer_complete() must be invoked
+bool hcd_edpt_xfer(uint8_t rhport, uint8_t dev_addr, uint8_t ep_addr, uint8_t * buffer, uint16_t buflen) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+  const uint8_t ep_num = tu_edpt_number(ep_addr);
+  const uint8_t ep_dir = tu_edpt_dir(ep_addr);
+
+  uint8_t ep_id = edpt_find_opened(dev_addr, ep_num, ep_dir);
+  TU_ASSERT(ep_id < CFG_TUH_DWC2_ENDPOINT_MAX);
+  hcd_endpoint_t* edpt = &_hcd_data.edpt[ep_id];
+
+  edpt->buffer = buffer;
+  edpt->buflen = buflen;
+
+  if (ep_num == 0) {
+    // update ep_dir since control endpoint can switch direction
+    edpt->hcchar_bm.ep_dir = ep_dir;
+  }
+
+  return edpt_xfer_kickoff(dwc2, ep_id);
+}
+
+// Abort a queued transfer. Note: it can only abort transfer that has not been started
+// Return true if a queued transfer is aborted, false if there is no transfer to abort
+bool hcd_edpt_abort_xfer(uint8_t rhport, uint8_t dev_addr, uint8_t ep_addr) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+  const uint8_t ep_num = tu_edpt_number(ep_addr);
+  const uint8_t ep_dir = tu_edpt_dir(ep_addr);
+  const uint8_t ep_id = edpt_find_opened(dev_addr, ep_num, ep_dir);
+  TU_VERIFY(ep_id < CFG_TUH_DWC2_ENDPOINT_MAX);
+
+  // hcd_int_disable(rhport);
+
+  // Find enabled channeled and disable it, channel will be de-allocated in the interrupt handler
+  const uint8_t ch_id = channel_find_enabled(dwc2, dev_addr, ep_num, ep_dir);
+  if (ch_id < 16) {
+    dwc2_channel_t* channel = &dwc2->channel[ch_id];
+    channel_disable(dwc2, channel);
+  }
+
+  // hcd_int_enable(rhport);
+
+  return true;
+}
+
+// Submit a special transfer to send 8-byte Setup Packet, when complete hcd_event_xfer_complete() must be invoked
+bool hcd_setup_send(uint8_t rhport, uint8_t dev_addr, const uint8_t setup_packet[8]) {
+  uint8_t ep_id = edpt_find_opened(dev_addr, 0, TUSB_DIR_OUT);
+  TU_ASSERT(ep_id < CFG_TUH_DWC2_ENDPOINT_MAX); // no opened endpoint
+  hcd_endpoint_t* edpt = &_hcd_data.edpt[ep_id];
+  edpt->next_pid = HCTSIZ_PID_SETUP;
+
+  return hcd_edpt_xfer(rhport, dev_addr, 0, (uint8_t*)(uintptr_t) setup_packet, 8);
+}
+
+// clear stall, data toggle is also reset to DATA0
+bool hcd_edpt_clear_stall(uint8_t rhport, uint8_t dev_addr, uint8_t ep_addr) {
+  (void) rhport;
+  const uint8_t ep_num = tu_edpt_number(ep_addr);
+  const uint8_t ep_dir = tu_edpt_dir(ep_addr);
+  const uint8_t ep_id = edpt_find_opened(dev_addr, ep_num, ep_dir);
+  TU_VERIFY(ep_id < CFG_TUH_DWC2_ENDPOINT_MAX);
+  hcd_endpoint_t* edpt = &_hcd_data.edpt[ep_id];
+
+  edpt->next_pid = HCTSIZ_PID_DATA0;
+
+  return true;
+}
+
+//--------------------------------------------------------------------
+// HCD Event Handler
+//--------------------------------------------------------------------
+static void channel_xfer_in_retry(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hcint) {
+  hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+  dwc2_channel_t* channel = &dwc2->channel[ch_id];
+  hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
+
+  if (edpt_is_periodic(channel->hcchar_bm.ep_type)){
+    // retry immediately for periodic split NYET if we haven't reach max retry
+    if (channel->hcsplt_bm.split_en && channel->hcsplt_bm.split_compl && (hcint & HCINT_NYET || xfer->halted_nyet)) {
+      xfer->period_split_nyet_count++;
+      xfer->halted_nyet = 0;
+      if (xfer->period_split_nyet_count < HCD_XFER_PERIOD_SPLIT_NYET_MAX) {
+        channel->hcchar_bm.odd_frame = 1 - (dwc2->hfnum & 1); // transfer on next frame
+        channel_send_in_token(dwc2, channel);
+        return;
+      } else {
+        // too many NYET, de-allocate channel with below code
+        xfer->period_split_nyet_count = 0;
+      }
+    }
+
+    // for periodic, de-allocate channel, enable SOF set frame counter for later transfer
+    edpt->next_pid = channel->hctsiz_bm.pid; // save PID
+    edpt->uframe_countdown = edpt->uframe_interval;
+    dwc2->gintmsk |= GINTSTS_SOF;
+
+    if (hcint & HCINT_HALTED) {
+      // already halted, de-allocate channel (called from DMA isr)
+      channel_dealloc(dwc2, ch_id);
+    } else {
+      // disable channel first if not halted (called slave isr)
+      xfer->halted_sof_schedule = 1;
+      channel_disable(dwc2, channel);
+    }
+  } else {
+    // for control/bulk: retry immediately
+    channel_send_in_token(dwc2, channel);
+  }
+}
+
+#if CFG_TUSB_DEBUG
+TU_ATTR_ALWAYS_INLINE static inline void print_hcint(uint32_t hcint) {
+  const char* str[] = {
+    "XFRC", "HALTED", "AHBERR", "STALL",
+    "NAK", "ACK", "NYET", "XERR",
+    "BBLERR", "FRMOR", "DTERR", "BNA",
+    "XCSERR", "DESC_LST"
+  };
+
+  for(uint32_t i=0; i<14; i++) {
+    if (hcint & TU_BIT(i)) {
+      TU_LOG1("%s ", str[i]);
+    }
+  }
+  TU_LOG1("\r\n");
+}
+#endif
+
+#if CFG_TUH_DWC2_SLAVE_ENABLE
+static void handle_rxflvl_irq(uint8_t rhport) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+
+  // Pop control word off FIFO
+  const dwc2_grxstsp_t grxstsp_bm = dwc2->grxstsp_bm;
+  const uint8_t ch_id = grxstsp_bm.ep_ch_num;
+
+  switch (grxstsp_bm.packet_status) {
+    case GRXSTS_PKTSTS_RX_DATA: {
+      // In packet received, pop this entry --> ACK interrupt
+      const uint16_t byte_count = grxstsp_bm.byte_count;
+      hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+      TU_ASSERT(xfer->ep_id < CFG_TUH_DWC2_ENDPOINT_MAX,);
+      hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
+
+      if (byte_count) {
+        dfifo_read_packet(dwc2, edpt->buffer + xfer->xferred_bytes, byte_count);
+        xfer->xferred_bytes += byte_count;
+        xfer->fifo_bytes = byte_count;
+      }
+      break;
+    }
+
+    case GRXSTS_PKTSTS_RX_COMPLETE:
+      // In transfer complete: After this entry is popped from the rx FIFO, dwc2 asserts a Transfer Completed
+      // interrupt --> handle_channel_irq()
+      break;
+
+    case GRXSTS_PKTSTS_HOST_DATATOGGLE_ERR:
+      TU_ASSERT(0, ); // maybe try to change DToggle
+      break;
+
+    case GRXSTS_PKTSTS_HOST_CHANNEL_HALTED:
+      // triggered when channel.hcchar_bm.disable is set
+      // TODO handle later
+      break;
+
+    default: break; // ignore other status
+  }
+}
+
+// return true if there is still pending data and need more ISR
+static bool handle_txfifo_empty(dwc2_regs_t* dwc2, bool is_periodic) {
+  // Use period txsts for both p/np to get request queue space available (1-bit difference, it is small enough)
+  volatile dwc2_hptxsts_t* txsts_bm = (volatile dwc2_hptxsts_t*) (is_periodic ? &dwc2->hptxsts : &dwc2->hnptxsts);
+
+  const uint8_t max_channel = DWC2_CHANNEL_COUNT(dwc2);
+  for (uint8_t ch_id = 0; ch_id < max_channel; ch_id++) {
+    dwc2_channel_t* channel = &dwc2->channel[ch_id];
+    // skip writing to FIFO if channel is expecting halted.
+    if (!(channel->hcintmsk & HCINT_HALTED) && (channel->hcchar_bm.ep_dir == TUSB_DIR_OUT)) {
+      hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+      TU_ASSERT(xfer->ep_id < CFG_TUH_DWC2_ENDPOINT_MAX);
+      hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
+
+      const uint16_t remain_packets = channel->hctsiz_bm.packet_count;
+      for (uint16_t i = 0; i < remain_packets; i++) {
+        const uint16_t remain_bytes = edpt->buflen - xfer->fifo_bytes;
+        const uint16_t xact_bytes = tu_min16(remain_bytes, channel->hcchar_bm.ep_size);
+
+        // skip if there is not enough space in FIFO and RequestQueue.
+        // Packet's last word written to FIFO will trigger a request queue
+        if ((xact_bytes > (txsts_bm->fifo_available << 2)) || (txsts_bm->req_queue_available == 0)) {
+          return true;
+        }
+
+        dfifo_write_packet(dwc2, ch_id, edpt->buffer + xfer->fifo_bytes, xact_bytes);
+        xfer->fifo_bytes += xact_bytes;
+      }
+    }
+  }
+
+  return false; // no channel has pending data
+}
+
+static bool handle_channel_in_slave(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hcint) {
+  hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+  dwc2_channel_t* channel = &dwc2->channel[ch_id];
+  hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
+  bool is_done = false;
+
+  // if (channel->hcsplt_bm.split_en) {
+  // if (edpt->hcchar_bm.ep_num == 1) {
+  //   TU_LOG1("Frame %u, ch %u: ep %u, hcint 0x%04lX ", dwc2->hfnum_bm.num, ch_id, channel->hcchar_bm.ep_num, hcint);
+  //   print_hcint(hcint);
+  // }
+
+  if (hcint & HCINT_XFER_COMPLETE) {
+    if (edpt->hcchar_bm.ep_num != 0) {
+      edpt->next_pid = channel->hctsiz_bm.pid; // save pid (already toggled)
+    }
+
+    const uint16_t remain_packets = channel->hctsiz_bm.packet_count;
+    if (channel->hcsplt_bm.split_en && remain_packets && xfer->fifo_bytes == edpt->hcchar_bm.ep_size) {
+      // Split can only complete 1 transaction (up to 1 packet) at a time, schedule more
+      channel->hcsplt_bm.split_compl = 0;
+    } else {
+      xfer->result = XFER_RESULT_SUCCESS;
+    }
+
+    channel_disable(dwc2, channel);
+  } else if (hcint & (HCINT_XACT_ERR | HCINT_BABBLE_ERR | HCINT_STALL)) {
+    if (hcint & HCINT_STALL) {
+      xfer->result = XFER_RESULT_STALLED;
+    } else if (hcint & HCINT_BABBLE_ERR) {
+      xfer->result = XFER_RESULT_FAILED;
+    } else if (hcint & HCINT_XACT_ERR) {
+      xfer->err_count++;
+      channel->hcintmsk |= HCINT_ACK;
+    }
+
+    channel_disable(dwc2, channel);
+  } else if (hcint & HCINT_NYET) {
+    // restart complete split
+    channel->hcsplt_bm.split_compl = 1;
+    xfer->halted_nyet = 1;
+    channel_disable(dwc2, channel);
+  } else if (hcint & HCINT_NAK) {
+    // NAK received, re-enable channel if request queue is available
+    if (channel->hcsplt_bm.split_en) {
+      channel->hcsplt_bm.split_compl = 0; // restart with start-split
+    }
+
+    channel_disable(dwc2, channel);
+  } else if (hcint & HCINT_ACK) {
+    xfer->err_count = 0;
+
+    if (channel->hcsplt_bm.split_en) {
+      if (!channel->hcsplt_bm.split_compl) {
+        // start split is ACK --> do complete split
+        channel->hcintmsk |= HCINT_NYET;
+        channel->hcsplt_bm.split_compl = 1;
+        channel_send_in_token(dwc2, channel);
+      } else {
+        // do nothing for complete split with DATA, this will trigger XferComplete and handled there
+      }
+    } else {
+      // ACK with data
+      const uint16_t remain_packets = channel->hctsiz_bm.packet_count;
+      if (remain_packets) {
+        // still more packet to receive, also reset to start split
+        channel->hcsplt_bm.split_compl = 0;
+        channel_send_in_token(dwc2, channel);
+      }
+    }
+  } else if (hcint & HCINT_HALTED) {
+    channel->hcintmsk &= ~HCINT_HALTED;
+    if (xfer->halted_sof_schedule) {
+      // de-allocate channel but does not complete xfer, we schedule it in the SOF interrupt
+      channel_dealloc(dwc2, ch_id);
+    } else if (xfer->result != XFER_RESULT_INVALID) {
+      is_done = true;
+    } else if (xfer->err_count == HCD_XFER_ERROR_MAX) {
+      xfer->result = XFER_RESULT_FAILED;
+      is_done = true;
+    } else {
+      // got here due to NAK or NYET
+      channel_xfer_in_retry(dwc2, ch_id, hcint);
+    }
+  } else if (hcint & HCINT_DATATOGGLE_ERR) {
+    xfer->err_count = 0;
+    TU_ASSERT(false);
+  }
+  return is_done;
+}
+
+static bool handle_channel_out_slave(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hcint) {
+  hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+  dwc2_channel_t* channel = &dwc2->channel[ch_id];
+  hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
+  bool is_done = false;
+
+  if (hcint & HCINT_XFER_COMPLETE) {
+    is_done = true;
+    xfer->result = XFER_RESULT_SUCCESS;
+    channel->hcintmsk &= ~HCINT_ACK;
+  } else if (hcint & HCINT_STALL) {
+    xfer->result = XFER_RESULT_STALLED;
+    channel_disable(dwc2, channel);
+  } else if (hcint & HCINT_NYET) {
+    xfer->err_count = 0;
+    if (channel->hcsplt_bm.split_en) {
+      // retry complete split
+      channel->hcsplt_bm.split_compl = 1;
+      channel->hcchar |= HCCHAR_CHENA;
+    } else {
+      edpt->do_ping = 1;
+      channel_xfer_out_wrapup(dwc2, ch_id);
+      channel_disable(dwc2, channel);
+    }
+  } else if (hcint & (HCINT_NAK | HCINT_XACT_ERR)) {
+    // clean up transfer so far, disable and start again later
+    channel_xfer_out_wrapup(dwc2, ch_id);
+    channel_disable(dwc2, channel);
+    if (hcint & HCINT_XACT_ERR) {
+      xfer->err_count++;
+      channel->hcintmsk |= HCINT_ACK;
+    } else {
+      // NAK disable channel to flush all posted request and try again
+      edpt->do_ping = 1;
+      xfer->err_count = 0;
+    }
+  } else if (hcint & HCINT_HALTED) {
+    channel->hcintmsk &= ~HCINT_HALTED;
+    if (xfer->result != XFER_RESULT_INVALID) {
+      is_done = true;
+    } else if (xfer->err_count == HCD_XFER_ERROR_MAX) {
+      xfer->result = XFER_RESULT_FAILED;
+      is_done = true;
+    } else {
+      // Got here due to NAK or NYET
+      TU_ASSERT(channel_xfer_start(dwc2, ch_id));
+    }
+  } else if (hcint & HCINT_ACK) {
+    xfer->err_count = 0;
+    channel->hcintmsk &= ~HCINT_ACK;
+    if (channel->hcsplt_bm.split_en && !channel->hcsplt_bm.split_compl) {
+      // start split is ACK --> do complete split
+      channel->hcsplt_bm.split_compl = 1;
+      channel->hcchar |= HCCHAR_CHENA;
+    }
+  }
+
+  if (is_done) {
+    xfer->xferred_bytes += xfer->fifo_bytes;
+    xfer->fifo_bytes = 0;
+  }
+
+  return is_done;
+}
+#endif
+
+#if CFG_TUH_DWC2_DMA_ENABLE
+static bool handle_channel_in_dma(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hcint) {
+  hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+  dwc2_channel_t* channel = &dwc2->channel[ch_id];
+  hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
+
+  bool is_done = false;
+
+  // TU_LOG1("in  hcint = %02lX\r\n", hcint);
+
+  if (hcint & HCINT_HALTED) {
+    if (hcint & (HCINT_XFER_COMPLETE | HCINT_STALL | HCINT_BABBLE_ERR)) {
+      const uint16_t remain_bytes = (uint16_t) channel->hctsiz_bm.xfer_size;
+      const uint16_t remain_packets = channel->hctsiz_bm.packet_count;
+      const uint16_t actual_len = edpt->buflen - remain_bytes;
+      xfer->xferred_bytes += actual_len;
+
+      is_done = true;
+
+      if (hcint & HCINT_STALL) {
+        xfer->result = XFER_RESULT_STALLED;
+      } else if (hcint & HCINT_BABBLE_ERR) {
+        xfer->result = XFER_RESULT_FAILED;
+      } else if (channel->hcsplt_bm.split_en && remain_packets && actual_len == edpt->hcchar_bm.ep_size) {
+        // Split can only complete 1 transaction (up to 1 packet) at a time, schedule more
+        is_done = false;
+        edpt->buffer += actual_len;
+        edpt->buflen -= actual_len;
+
+        channel->hcsplt_bm.split_compl = 0;
+        channel_xfer_in_retry(dwc2, ch_id, hcint);
+      } else {
+        xfer->result = XFER_RESULT_SUCCESS;
+      }
+
+      xfer->err_count = 0;
+      channel->hcintmsk &= ~HCINT_ACK;
+    } else if (hcint & HCINT_XACT_ERR) {
+      xfer->err_count++;
+      if (xfer->err_count >=  HCD_XFER_ERROR_MAX) {
+        is_done = true;
+        xfer->result = XFER_RESULT_FAILED;
+      } else {
+        channel->hcintmsk |= HCINT_ACK | HCINT_NAK | HCINT_DATATOGGLE_ERR;
+        channel->hcsplt_bm.split_compl = 0;
+        channel_xfer_in_retry(dwc2, ch_id, hcint);
+      }
+    } else if (hcint & HCINT_NYET) {
+      // Must handle nyet before nak or ack. Could get a nyet at the same time as either of those on a BULK/CONTROL
+      // OUT that started with a PING. The nyet takes precedence.
+      if (channel->hcsplt_bm.split_en) {
+        // split not yet mean hub has no data, retry complete split
+        channel->hcsplt_bm.split_compl = 1;
+        channel_xfer_in_retry(dwc2, ch_id, hcint);
+      }
+    } else if (hcint & HCINT_ACK) {
+      xfer->err_count = 0;
+      channel->hcintmsk &= ~HCINT_ACK;
+      if (channel->hcsplt_bm.split_en) {
+        // start split is ACK --> do complete split
+        // TODO: for ISO must use xact_pos to plan complete split based on microframe (up to 187.5 bytes/uframe)
+        channel->hcsplt_bm.split_compl = 1;
+        if (edpt_is_periodic(channel->hcchar_bm.ep_type)) {
+          channel->hcchar_bm.odd_frame = 1 - (dwc2->hfnum & 1); // transfer on next frame
+        }
+        channel_send_in_token(dwc2, channel);
+      }
+    } else if (hcint & (HCINT_NAK | HCINT_DATATOGGLE_ERR)) {
+      xfer->err_count = 0;
+      channel->hcintmsk &= ~(HCINT_NAK | HCINT_DATATOGGLE_ERR);
+      channel->hcsplt_bm.split_compl = 0; // restart with start-split
+      channel_xfer_in_retry(dwc2, ch_id, hcint);
+    } else if (hcint & HCINT_FARME_OVERRUN) {
+      // retry start-split in next binterval
+      channel_xfer_in_retry(dwc2, ch_id, hcint);
+    }
+  }
+
+  return is_done;
+}
+
+static bool handle_channel_out_dma(dwc2_regs_t* dwc2, uint8_t ch_id, uint32_t hcint) {
+  hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+  dwc2_channel_t* channel = &dwc2->channel[ch_id];
+  hcd_endpoint_t* edpt = &_hcd_data.edpt[xfer->ep_id];
+
+  bool is_done = false;
+
+  // TU_LOG1("out hcint = %02lX\r\n", hcint);
+
+  if (hcint & HCINT_HALTED) {
+    if (hcint & (HCINT_XFER_COMPLETE | HCINT_STALL)) {
+      is_done = true;
+      xfer->err_count = 0;
+      if (hcint & HCINT_XFER_COMPLETE) {
+        xfer->result = XFER_RESULT_SUCCESS;
+        xfer->xferred_bytes += edpt->buflen;
+      } else {
+        xfer->result = XFER_RESULT_STALLED;
+        channel_xfer_out_wrapup(dwc2, ch_id);
+      }
+      channel->hcintmsk &= ~HCINT_ACK;
+    } else if (hcint & HCINT_XACT_ERR) {
+     if (hcint & (HCINT_NAK | HCINT_NYET | HCINT_ACK)) {
+       xfer->err_count = 0;
+       // clean up transfer so far and start again
+       channel_xfer_out_wrapup(dwc2, ch_id);
+       channel_xfer_start(dwc2, ch_id);
+     } else {
+       xfer->err_count++;
+       if (xfer->err_count >= HCD_XFER_ERROR_MAX) {
+         xfer->result = XFER_RESULT_FAILED;
+         is_done = true;
+       } else {
+         // clean up transfer so far and start again
+         channel_xfer_out_wrapup(dwc2, ch_id);
+         channel_xfer_start(dwc2, ch_id);
+       }
+     }
+    } else if (hcint & HCINT_NYET) {
+      if (channel->hcsplt_bm.split_en && channel->hcsplt_bm.split_compl) {
+        // split not yet mean hub has no data, retry complete split
+        channel->hcsplt_bm.split_compl = 1;
+        channel->hcchar |= HCCHAR_CHENA;
+      }
+    } else if (hcint & HCINT_ACK) {
+      xfer->err_count = 0;
+      if (channel->hcsplt_bm.split_en && !channel->hcsplt_bm.split_compl) {
+        // start split is ACK --> do complete split
+        channel->hcsplt_bm.split_compl = 1;
+        channel->hcchar |= HCCHAR_CHENA;
+      }
+    }
+  } else if (hcint & HCINT_ACK) {
+    xfer->err_count = 0;
+    channel->hcintmsk &= ~HCINT_ACK;
+  }
+
+  return is_done;
+}
+#endif
+
+static void handle_channel_irq(uint8_t rhport, bool in_isr) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+  const bool is_dma = dma_host_enabled(dwc2);
+  const uint8_t max_channel = DWC2_CHANNEL_COUNT(dwc2);
+
+  for (uint8_t ch_id = 0; ch_id < max_channel; ch_id++) {
+    if (tu_bit_test(dwc2->haint, ch_id)) {
+      dwc2_channel_t* channel = &dwc2->channel[ch_id];
+      hcd_xfer_t* xfer = &_hcd_data.xfer[ch_id];
+      TU_ASSERT(xfer->ep_id < CFG_TUH_DWC2_ENDPOINT_MAX,);
+      dwc2_channel_char_t hcchar_bm = channel->hcchar_bm;
+
+      uint32_t hcint = channel->hcint;
+      channel->hcint = hcint;
+
+      bool is_done;
+      if (is_dma) {
+        #if CFG_TUH_DWC2_DMA_ENABLE
+        if (hcchar_bm.ep_dir == TUSB_DIR_OUT) {
+          is_done = handle_channel_out_dma(dwc2, ch_id, hcint);
+        } else {
+          is_done = handle_channel_in_dma(dwc2, ch_id, hcint);
+        }
+        #endif
+      } else {
+        #if CFG_TUH_DWC2_SLAVE_ENABLE
+        if (hcchar_bm.ep_dir == TUSB_DIR_OUT) {
+          is_done = handle_channel_out_slave(dwc2, ch_id, hcint);
+        } else {
+          is_done = handle_channel_in_slave(dwc2, ch_id, hcint);
+        }
+        #endif
+      }
+
+      if (is_done) {
+        const uint8_t ep_addr = tu_edpt_addr(hcchar_bm.ep_num, hcchar_bm.ep_dir);
+        hcd_event_xfer_complete(hcchar_bm.dev_addr, ep_addr, xfer->xferred_bytes, xfer->result, in_isr);
+        channel_dealloc(dwc2, ch_id);
+      }
+    }
+  }
+}
+
+// SOF is enabled for scheduled periodic transfer
+static bool handle_sof_irq(uint8_t rhport, bool in_isr) {
+  (void) in_isr;
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+
+  bool more_isr = false;
+
+  // If highspeed then SOF is 125us, else 1ms
+  const uint32_t ucount = (hprt_speed_get(dwc2) == TUSB_SPEED_HIGH ? 1 : 8);
+
+  for(uint8_t ep_id = 0; ep_id < CFG_TUH_DWC2_ENDPOINT_MAX; ep_id++) {
+    hcd_endpoint_t* edpt = &_hcd_data.edpt[ep_id];
+    if (edpt->hcchar_bm.enable && edpt_is_periodic(edpt->hcchar_bm.ep_type) && edpt->uframe_countdown > 0) {
+      edpt->uframe_countdown -= tu_min32(ucount, edpt->uframe_countdown);
+      if (edpt->uframe_countdown == 0) {
+        if (!edpt_xfer_kickoff(dwc2, ep_id)) {
+          edpt->uframe_countdown = ucount; // failed to start, try again next frame
+        }
+      }
+
+      more_isr = true;
+    }
+  }
+
+  return more_isr;
+}
+
+// Config HCFG FS/LS clock and HFIR for SOF interval according to link speed (value is in PHY clock unit)
+static void port0_enable(dwc2_regs_t* dwc2) {
+  const tusb_speed_t speed = hprt_speed_get(dwc2);
+  uint32_t hcfg = dwc2->hcfg & ~HCFG_FSLS_PHYCLK_SEL;
+
+  const dwc2_gusbcfg_t gusbcfg_bm = dwc2->gusbcfg_bm;
+  uint32_t phy_clock;
+
+  if (gusbcfg_bm.phy_sel) {
+    phy_clock = 48; // dedicated FS is 48Mhz
+    if (speed == TUSB_SPEED_LOW) {
+      hcfg |= HCFG_FSLS_PHYCLK_SEL_6MHZ;
+    } else {
+      hcfg |= HCFG_FSLS_PHYCLK_SEL_48MHZ;
+    }
+  } else {
+    if (gusbcfg_bm.ulpi_utmi_sel) {
+      phy_clock = 60; // ULPI 8-bit is 60Mhz
+    } else {
+      // UTMI+ 16-bit is 30Mhz, 8-bit is 60Mhz
+      phy_clock = gusbcfg_bm.phy_if16 ? 30 : 60;
+
+      // Enable UTMI+ low power mode 48Mhz external clock if not highspeed
+      if (speed == TUSB_SPEED_HIGH) {
+        dwc2->gusbcfg &= ~GUSBCFG_PHYLPCS;
+      } else {
+        dwc2->gusbcfg |= GUSBCFG_PHYLPCS;
+        // may need to reset port
+      }
+    }
+    hcfg |= HCFG_FSLS_PHYCLK_SEL_30_60MHZ;
+  }
+
+  dwc2->hcfg = hcfg;
+
+  uint32_t hfir = dwc2->hfir & ~HFIR_FRIVL_Msk;
+  if (speed == TUSB_SPEED_HIGH) {
+    hfir |= 125*phy_clock;
+  } else {
+    hfir |= 1000*phy_clock;
+  }
+
+  dwc2->hfir = hfir;
+}
+
+/* Handle Host Port interrupt, possible source are:
+   - Connection Detection
+   - Enable Change
+   - Over Current Change
+*/
+static void handle_hprt_irq(uint8_t rhport, bool in_isr) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+  uint32_t hprt = dwc2->hprt & ~HPRT_W1_MASK;
+  const dwc2_hprt_t hprt_bm = dwc2->hprt_bm;
+
+  if (dwc2->hprt & HPRT_CONN_DETECT) {
+    // Port Connect Detect
+    hprt |= HPRT_CONN_DETECT;
+
+    if (hprt_bm.conn_status) {
+      hcd_event_device_attach(rhport, in_isr);
+    } else {
+      hcd_event_device_remove(rhport, in_isr);
+    }
+  }
+
+  if (dwc2->hprt & HPRT_ENABLE_CHANGE) {
+    // Port enable change
+    hprt |= HPRT_ENABLE_CHANGE;
+
+    if (hprt_bm.enable) {
+      // Port enable
+      port0_enable(dwc2);
+    } else {
+      // TU_ASSERT(false, );
+    }
+  }
+
+  dwc2->hprt = hprt; // clear interrupt
+}
+
+/* Interrupt Hierarchy
+               HCINTn       HPRT
+                 |           |
+               HAINT.CHn     |
+                 |           |
+    GINTSTS :  HCInt     | PrtInt | NPTxFEmp | PTxFEmpp | RXFLVL | SOF
+*/
+void hcd_int_handler(uint8_t rhport, bool in_isr) {
+  dwc2_regs_t* dwc2 = DWC2_REG(rhport);
+  const uint32_t gintmsk = dwc2->gintmsk;
+  const uint32_t gintsts = dwc2->gintsts & gintmsk;
+
+  // TU_LOG1_HEX(gintsts);
+
+  if (gintsts & GINTSTS_CONIDSTSCHNG) {
+    // Connector ID status change
+    dwc2->gintsts = GINTSTS_CONIDSTSCHNG;
+
+    //if (dwc2->gotgctl)
+    // dwc2->hprt = HPRT_POWER; // power on port to turn on VBUS
+    //dwc2->gintmsk |= GINTMSK_PRTIM;
+    // TODO wait for SRP if OTG
+  }
+
+  if (gintsts & GINTSTS_SOF) {
+    const bool more_sof = handle_sof_irq(rhport, in_isr);
+    if (!more_sof) {
+      dwc2->gintmsk &= ~GINTSTS_SOF;
+    }
+  }
+
+  if (gintsts & GINTSTS_HPRTINT) {
+    // Host port interrupt: source is cleared in HPRT register
+    // TU_LOG1_HEX(dwc2->hprt);
+    handle_hprt_irq(rhport, in_isr);
+  }
+
+  if (gintsts & GINTSTS_HCINT) {
+    // Host Channel interrupt: source is cleared in HCINT register
+    // must be handled after TX FIFO empty
+    handle_channel_irq(rhport, in_isr);
+  }
+
+#if CFG_TUH_DWC2_SLAVE_ENABLE
+  // RxFIFO non-empty interrupt handling
+  if (gintsts & GINTSTS_RXFLVL) {
+    // RXFLVL bit is read-only
+    dwc2->gintmsk &= ~GINTSTS_RXFLVL; // disable RXFLVL interrupt while reading
+
+    do {
+      handle_rxflvl_irq(rhport); // read all packets
+    } while(dwc2->gintsts & GINTSTS_RXFLVL);
+
+    dwc2->gintmsk |= GINTSTS_RXFLVL;
+  }
+
+  if (gintsts & GINTSTS_NPTX_FIFO_EMPTY) {
+    // NPTX FIFO empty interrupt, this is read-only and cleared by hardware when FIFO is written
+    const bool more_nptxfe = handle_txfifo_empty(dwc2, false);
+    if (!more_nptxfe) {
+      // no more pending packet, disable interrupt
+      dwc2->gintmsk &= ~GINTSTS_NPTX_FIFO_EMPTY;
+    }
+  }
+
+  if (gintsts & GINTSTS_PTX_FIFO_EMPTY) {
+    // PTX FIFO empty interrupt, this is read-only and cleared by hardware when FIFO is written
+    const bool more_ptxfe = handle_txfifo_empty(dwc2, true);
+    if (!more_ptxfe) {
+      // no more pending packet, disable interrupt
+      dwc2->gintmsk &= ~GINTSTS_PTX_FIFO_EMPTY;
+    }
+  }
+#endif
+}
+
+#endif
diff --git a/src/tusb.c b/src/tusb.c
index e6f8055b7..a516cb9a1 100644
--- a/src/tusb.c
+++ b/src/tusb.c
@@ -39,14 +39,25 @@
 #include "host/usbh_pvt.h"
 #endif
 
-#define TUP_USBIP_CONTROLLER_NUM 2
+tusb_role_t _tusb_rhport_role[TUP_USBIP_CONTROLLER_NUM] = { 0 };
 
-static tusb_role_t _rhport_role[TUP_USBIP_CONTROLLER_NUM] = { 0 };
+//--------------------------------------------------------------------
+// Weak/Default API, can be overwritten by Application
+//--------------------------------------------------------------------
+
+TU_ATTR_WEAK void tusb_time_delay_ms_api(uint32_t ms) {
+#if CFG_TUSB_OS != OPT_OS_NONE
+  osal_task_delay(ms);
+#else
+  // delay using millis() (if implemented) and/or frame number if possible
+  const uint32_t time_ms = tusb_time_millis_api();
+  while ((tusb_time_millis_api() - time_ms) < ms) {}
+#endif
+}
 
 //--------------------------------------------------------------------+
 // Public API
 //--------------------------------------------------------------------+
-
 bool tusb_rhport_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   //  backward compatible called with tusb_init(void)
   #if defined(TUD_OPT_RHPORT) || defined(TUH_OPT_RHPORT)
@@ -58,7 +69,7 @@ bool tusb_rhport_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
       .speed = TUD_OPT_HIGH_SPEED ? TUSB_SPEED_HIGH : TUSB_SPEED_FULL
     };
     TU_ASSERT ( tud_rhport_init(rhport, &dev_init) );
-    _rhport_role[TUD_OPT_RHPORT] = TUSB_ROLE_DEVICE;
+    _tusb_rhport_role[TUD_OPT_RHPORT] = TUSB_ROLE_DEVICE;
     #endif
 
     #if CFG_TUH_ENABLED && defined(TUH_OPT_RHPORT)
@@ -68,7 +79,7 @@ bool tusb_rhport_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
       .speed = TUH_OPT_HIGH_SPEED ? TUSB_SPEED_HIGH : TUSB_SPEED_FULL
     };
     TU_ASSERT( tuh_rhport_init(TUH_OPT_RHPORT, &host_init) );
-    _rhport_role[TUH_OPT_RHPORT] = TUSB_ROLE_HOST;
+    _tusb_rhport_role[TUH_OPT_RHPORT] = TUSB_ROLE_HOST;
     #endif
 
     return true;
@@ -77,6 +88,7 @@ bool tusb_rhport_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   // new API with explicit rhport and role
   TU_ASSERT(rhport < TUP_USBIP_CONTROLLER_NUM && rh_init->role != TUSB_ROLE_INVALID);
+  _tusb_rhport_role[rhport] = rh_init->role;
 
   #if CFG_TUD_ENABLED
   if (rh_init->role == TUSB_ROLE_DEVICE) {
@@ -90,7 +102,6 @@ bool tusb_rhport_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   }
   #endif
 
-  _rhport_role[rhport] = rh_init->role;
   return true;
 }
 
@@ -112,14 +123,14 @@ void tusb_int_handler(uint8_t rhport, bool in_isr) {
   TU_VERIFY(rhport < TUP_USBIP_CONTROLLER_NUM,);
 
   #if CFG_TUD_ENABLED
-  if (_rhport_role[rhport] == TUSB_ROLE_DEVICE) {
+  if (_tusb_rhport_role[rhport] == TUSB_ROLE_DEVICE) {
     (void) in_isr;
     dcd_int_handler(rhport);
   }
   #endif
 
   #if CFG_TUH_ENABLED
-  if (_rhport_role[rhport] == TUSB_ROLE_HOST) {
+  if (_tusb_rhport_role[rhport] == TUSB_ROLE_HOST) {
     hcd_int_handler(rhport, in_isr);
   }
   #endif
diff --git a/src/tusb.h b/src/tusb.h
index 2f30a5739..cb6021b33 100644
--- a/src/tusb.h
+++ b/src/tusb.h
@@ -127,10 +127,8 @@
 
 
 //--------------------------------------------------------------------+
-// APPLICATION API
+// User API
 //--------------------------------------------------------------------+
-
-
 #if CFG_TUH_ENABLED || CFG_TUD_ENABLED
 
 // Internal helper for backward compatible with tusb_init(void)
@@ -167,6 +165,15 @@ void tusb_int_handler(uint8_t rhport, bool in_isr);
 
 #endif
 
+//--------------------------------------------------------------------+
+// API Implemented by user
+//--------------------------------------------------------------------+
+
+// Get current milliseconds, required by some port/configuration without RTOS
+uint32_t tusb_time_millis_api(void);
+
+// Delay in milliseconds, use tusb_time_millis_api() by default. required by some port/configuration with no RTOS
+void tusb_time_delay_ms_api(uint32_t ms);
 
 #ifdef __cplusplus
  }
diff --git a/src/tusb_option.h b/src/tusb_option.h
index fdc949747..e9b6a5806 100644
--- a/src/tusb_option.h
+++ b/src/tusb_option.h
@@ -125,7 +125,8 @@
 #define OPT_MCU_ESP32C2           905 ///< Espressif ESP32-C2
 #define OPT_MCU_ESP32H2           906 ///< Espressif ESP32-H2
 #define OPT_MCU_ESP32P4           907 ///< Espressif ESP32-P4
-#define TUP_MCU_ESPRESSIF         (CFG_TUSB_MCU >= 900 && CFG_TUSB_MCU < 1000) // check if Espressif MCU
+#define TUSB_MCU_VENDOR_ESPRESSIF (CFG_TUSB_MCU >= 900 && CFG_TUSB_MCU < 1000) // check if Espressif MCU
+#define TUP_MCU_ESPRESSIF        TUSB_MCU_VENDOR_ESPRESSIF //  for backward compatibility
 
 // Dialog
 #define OPT_MCU_DA1469X          1000 ///< Dialog Semiconductor DA1469x
@@ -240,6 +241,8 @@
   #include "tusb_config.h"
 #endif
 
+#include "common/tusb_mcu.h"
+
 //--------------------------------------------------------------------+
 // USBIP
 //--------------------------------------------------------------------+
@@ -253,6 +256,22 @@
   #define CFG_TUD_DWC2_DMA 0
 #endif
 
+// Enable DWC2 Slave mode for host
+#ifndef CFG_TUH_DWC2_SLAVE_ENABLE
+  #ifndef CFG_TUH_DWC2_SLAVE_ENABLE_DEFAULT
+  #define CFG_TUH_DWC2_SLAVE_ENABLE_DEFAULT 1
+  #endif
+  #define CFG_TUH_DWC2_SLAVE_ENABLE CFG_TUH_DWC2_SLAVE_ENABLE_DEFAULT
+#endif
+
+// Enable DWC2 DMA for host
+#ifndef CFG_TUH_DWC2_DMA_ENABLE
+  #ifndef CFG_TUH_DWC2_DMA_ENABLE_DEFAULT
+  #define CFG_TUH_DWC2_DMA_ENABLE_DEFAULT 1
+  #endif
+  #define CFG_TUH_DWC2_DMA_ENABLE   CFG_TUH_DWC2_DMA_ENABLE_DEFAULT
+#endif
+
 // Enable PIO-USB software host controller
 #ifndef CFG_TUH_RPI_PIO_USB
   #define CFG_TUH_RPI_PIO_USB 0
@@ -267,7 +286,6 @@
   #define CFG_TUH_MAX3421  0
 #endif
 
-#include "common/tusb_mcu.h"
 
 //--------------------------------------------------------------------
 // RootHub Mode detection