[PATCH v1] HSD #18028953892: usb: xhci-dwc3: Fix USB3.1 controller register access in reset state

[Marek Vasut]

On 7/26/23 06:04, Chong, Teik Heng wrote:
[...]
>>>>> Linux:  (__dwc3_of_simple_teardown)
>>>>> https://elixir.bootlin.com/linux/latest/source/drivers/usb/dwc3/dwc3
>>>>> -o
>>>>> f-simple.c#L98
>>>>> U-Boot: (xhci_dwc3_remove)
>>>>> https://elixir.bootlin.com/u-boot/latest/source/drivers/usb/host/xhc
>>>>> i-
>>>>> dwc3.c#L227
>>>>>
>>>>> So we believed that we can't directly pickup all Linux kernel dwc3
>>>>> patches
>>>> and merge to U-Boot.
>>>>
>>>> If you were to sync the driver from Linux to U-Boot, then the same
>>>> sequence as Linux uses would be automatically used too, right ?
>>>>
>>>> Sorry for the abysmal delay in my reply.
>>>
>>> Are we saying that we shall port/use Linux driver in U-Boot and abandon
>> the existing USB host driver in U-Boot?
>>
>> No, the existing driver in U-Boot is a port of the Linux driver, it is just
>> outdated. I am saying, just pick the missing patches from Linux and add them
>> to U-Boot, so the two drivers are in sync.
> 
> We do not see a DWC3 host driver under usb host folder in Linux https://elixir.bootlin.com/linux/latest/source/drivers/usb/host. Would you mind to tell us which DWC3 host driver we should use in usb host folder? Then, we can pick up the missing patches

drivers/usb/dwc3

Same as u-boot