u-boot.git/drivers/usb/dwc3/core.c, branch main

usb: dwc3: Fix crash on fastboot exit due to incorrect memory free

2026-05-09T00:26:58Z

The dwc3_free_one_event_buffer() function incorrectly called free() on event buffer structures allocated with devm_kzalloc(). This caused heap corruption and a synchronous abort when exiting fastboot mode via "fastboot continue". Device-managed memory is automatically freed when the device is removed, so manual deallocation causes the heap allocator to access corrupted metadata. Fixes: 884b10e86a05 ("usb: dwc3: core: fix memory leaks in event buffer cleanup") Signed-off-by: Balaji Selvanathan Reviewed-by: Marek Vasut

drivers: usb: dwc3: Add delay after core soft reset

2026-04-27T10:33:30Z

Add a 100 ms delay after clearing the core soft reset bit to ensure the DWC3 controller has sufficient time to complete its reset sequence before subsequent register accesses. Without this delay, USB initialization can fail on some Qualcomm platforms, particularly when using super-speed capable PHYs like the QMP USB3-DP Combo PHY on SC7280/QCM6490. Taken from Linux commit f88359e1588b ("usb: dwc3: core: Do core softreset when switch mode") Signed-off-by: Balaji Selvanathan Reviewed-by: Varadarajan Narayanan Link: https://patch.msgid.link/20251203110735.1959862-3-balaji.selvanathan@oss.qualcomm.com Signed-off-by: Casey Connolly

usb: dwc3: core: fix memory leaks in event buffer cleanup

2026-04-17T13:57:19Z

In dwc3_free_one_event_buffer(), only the DMA buffer (evt->buf) was being freed via dma_free_coherent(), but the evt structure itself was never explicitly freed, causing a memory leak. In dwc3_free_event_buffers(), the ev_buffs pointer array allocated with memalign() was never freed after iterating and releasing all individual event buffers, causing another memory leak. Fix both leaks by freeing the evt struct in dwc3_free_one_event_buffer() and freeing dwc->ev_buffs in dwc3_free_event_buffers() after all entries have been released. Signed-off-by: Gurumoorthy Santhakumar Reviewed-by: Marek Vasut Reviewed-by: Mattijs Korpershoek

usb: dwc3: core: improve reset sequence

2026-01-30T07:59:21Z

According to Synopsys Databook, we shouldn't be relying on GCTL.CORESOFTRESET bit as that's only for debugging purposes. Instead, let's use DCTL.CSFTRST if we're OTG or PERIPHERAL mode. Host side block will be reset by XHCI driver if necessary. Note that this reduces amount of time spent on dwc3_probe() by a long margin. We're still gonna wait for reset to finish for a long time (default to 1ms max), but tests show that the reset polling loop executed at most 19 times (modprobe dwc3 && modprobe -r dwc3 executed 1000 times in a row). Note that this patch was submitted to Linux in 2016 [1], however I can confirm it is needed to support gadget mode in U-Boot on my device. While I am referencing this patch from Linux I am in fact taking the full existing dwc3_core_soft_reset() function from Linux as it exists in v6.19-rc5, so it may differ slightly from the information in the 2016 patch. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/drivers/usb/dwc3?id=f59dcab176293b646e1358144c93c58c3cda2813 Suggested-by: Mian Yousaf Kaukab Signed-off-by: Felipe Balbi Signed-off-by: Chris Morgan Reviewed-by: Mattijs Korpershoek Link: https://lore.kernel.org/r/20260115230135.183158-5-macroalpha82@gmail.com Signed-off-by: Mattijs Korpershoek

usb: dwc3: core: Add ip and version_type support from Linux

2026-01-30T07:59:21Z

Add support for the ip and version_type fields from the Linux version of the dwc3 driver. Included in this is support for a few additional macros in the header from Linux as well. Signed-off-by: Chris Morgan Reviewed-by: Mattijs Korpershoek Link: https://lore.kernel.org/r/20260115230135.183158-2-macroalpha82@gmail.com Signed-off-by: Mattijs Korpershoek

usb: dwc3: core: Fix timeout check

2025-05-25T13:44:13Z

dwc3_core_init loops 'timeout' times to check if the IP block is out of reset using 'while (timeout--)'. If there is some issue and the block doesn't come out of reset, the loop will run till 'timeout' becomes zero and the post decrement operator would set timeout to 0xffffffff. Though the IP block is not out reset, the subsequent if check 'if !timeout' would fail as timeout is not equal to zero and the function proceeds with the initialization. Use poll API instead to resolve this. Signed-off-by: Varadarajan Narayanan Reviewed-by: Mattijs Korpershoek Reviewed-by: Caleb Connolly

usb: dwc3: support USB 3.1 controllers

2024-08-11T17:45:36Z

The revision is different for these, add the additional check as in xhci-dwc3 core_init code. Equivalent upstream Linux patch: 690fb3718a70 ("usb: dwc3: Support Synopsys USB 3.1 IP") Reviewed-by: Neil Armstrong Tested-by: Neil Armstrong # on SM8550 Reviewed-by: Mattijs Korpershoek Reviewed-by: Marek Vasut Signed-off-by: Caleb Connolly Reviewed-by: Marek Vasut

Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"

2024-05-20T19:35:03Z

As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman Signed-off-by: Tom Rini

Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet""

2024-05-19T14:16:36Z

When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman Signed-off-by: Tom Rini

usb: Remove and add needed includes

2024-05-07T14:00:56Z

Remove from this driver directory and when needed add missing include files directly. Reviewed-by: Mattijs Korpershoek Signed-off-by: Tom Rini