[Letux-kernel] USB3-port on OMAP5432EVM

[H. Nikolaus Schaller]

Hi,

> Am 08.02.2017 um 12:48 schrieb Roger Quadros <rogerq at ti.com>:
> 
> Hi,
> 
> On 07/02/17 02:23, Tony Lindgren wrote:
>> Hi,
>> 
>> * H. Nikolaus Schaller <hns at goldelico.com> [170205 03:34]:
>>> fixed a type in the subject...
>>> 
>>>> Am 05.02.2017 um 12:31 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>>>> 
>>>> Hi Tony,
>>>> does the usb(3) port still work with recent kernels?
>>>> 
>>>> I noticed problems with 10.4-rc5 but found
>>>> that 4.9.4 is also not working while 4.8.11 works.
>>>> 
>>>> The symptoms/differences I see on my system are
>>>> * no console log message that vbus is plugged in
>>>> * no message that g_ether is configured
>>>> * no usb0 in ifconfig -a
>>>> * PC does not enumerate a device (even in usb2 speed)
>>>> 
>>>> Before I dig into our defconfig: does it work for you
>>>> with recent kernels or is there a known bug/patch/workaround?
>> 
>> Yeah so it seems, I just gave it a quick test with Linux
>> next and nothing happens with dwc3.
>> 
>> Roger, do you have any ideas why dwc3 no longer works on
>> omap5-uevm?
>> 
> 
> I just tested it with v4.10-rc5 and linux-next-20170208.
> It worked fine for me using omap2plus_defconfig.
> Both super-speed and high-speed worked fine.
> 
> g_ether is not enabled in omap2plus_defconfig so you will have
> to enable it manually.
> CONFIG_USB_ETH=m
> CONFIG_USB_ETH_RNDIS=y
> 
> Are you sure you loaded g_ether?
> Does it show in lsmod?

On my device: yes.

Maybe some u-boot dependency? I use a modified 2016.11.
Should find time do more testing...

Is there a way to debug what dwc3 is doing or not doing?

BR and thanks,
Nikolaus