From 84dfcef639afea9f15de4ba1d408a240d26fa4b6 Mon Sep 17 00:00:00 2001
From: sakimisu <1203593632@qq.com>
Date: Thu, 2 Feb 2023 23:23:55 +0800
Subject: check if dwc2 supports dma, if not, stop working

---
 port/dwc2/usb_hc_dwc2.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/port/dwc2/usb_hc_dwc2.c b/port/dwc2/usb_hc_dwc2.c
index e1591ae6..0ad34c51 100644
--- a/port/dwc2/usb_hc_dwc2.c
+++ b/port/dwc2/usb_hc_dwc2.c
@@ -464,6 +464,12 @@ int usb_hc_init(void)
 
     usb_hc_low_level_init();
 
+    if ((USB_OTG_GLB->CID & (0x1U << 8)) == 0U) {
+        USB_LOG_ERR("This dwc2 version does not support dma, so stop working\r\n");
+        while (1) {
+        }
+    }
+
     USB_OTG_GLB->GAHBCFG &= ~USB_OTG_GAHBCFG_GINT;
 
     ret = dwc2_core_init();
-- 
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