i.MX8MP usb status

[Marek Vasut]

On 5/20/22 20:21, Tim Harvey wrote:
> On Fri, May 20, 2022 at 10:08 AM Tim Harvey <tharvey at gateworks.com> wrote:
>>
>> On Wed, May 4, 2022 at 5:53 AM Marek Vasut <marex at denx.de> wrote:
>>>
>>> On 5/4/22 14:26, Peng Fan wrote:
>>>> Hi Marek,
>>>
>>> Hi,
>>>
>>>> Since you did some work on i.MX8MP USB, may I know the status?
>>>> Does host/device mode both supported in upstream?
>>>
>>> I only have HOST option available, so for me this is only HOST.
>>>
>>> I did not test GADGET or OTG .
>>>
>>
>> Marek,
>>
>> Do you still have IMX8MP USB host working on top of v2022.07-rc2,
>> master, or imx-master? It worked for me previously at some point
>> applying your dwc3 glue series [1] from a repo you pointed me to that
>> I can no longer find but now I see an issue where device_probe fails:
>>
>> u-boot=> usb start
>> starting USB...
>> Bus usb at 38100000: probe failed, error -61
>> Bus usb at 38200000: probe failed, error -61
>> No working controllers found
>>
>> The failure is that dwc3_glue_probe fails to find 'usb3-phy' due to
>> that being in the phy-names node of usb at 38100000 and not its parent
>> usb at 32f10100
>>
>> Am I missing a patch perhaps to dwc3_glue_probe in dwc3-generic.c?
>>
>> Tim
>> [1] https://patchwork.ozlabs.org/project/uboot/list/?series=293112
> 
> Marek,
> 
> I didn't explain that right. The failure is that dwc3_glue_probe gets
> passed usb3_0:usb at 32f10100 USB (controller dev) and tries to find
> usb3-phy in the phy-names prop of that dev where-as the phy-name node
> is in the usb_dwc3_0:usb at 38100000 phy child of the controller instead
> 
> However, I still wonder if I'm missing a patch that deals with this or
> if something just changed between testing your patch series and now.

There's already fix in u-boot-usb/master , see the topmost patch there.