[meta-intel] Atom E3800 USB3 Device Problem

[Yong, Jonathan]

On 06/16/2016 15:22, Yong, Jonathan wrote:
> On 06/14/2016 17:30, Anders Christensen wrote:
>> Hi,
>>
>> I’m testing USB3 device support on an Atom E3800 based system.
>>
>> The system is running Yocto including the Atom E3800 BSP
>> (valleyisland-4.0-jethro-2.0).
>>
>> I have the USB3 PCI device controller appearing in the list of PCI
>> devices:
>>
>> 00:16.0 USB controller: Intel Corporation Atom Processor Z36xxx/Z37xxx
>> Series
>> OTG USB Device (rev 11)
>>
>> So the controller is recognized by Yocto and the dwc3 driver also
>> loads without
>> any errors.
>>
>
> Hi Anders,
>
> We aren't able to reproduce it on the Backersport platform, let us know
> more about your setup, such as BIOS version in use, BIOS configuration,
> system manufacturing date, stepping information etc.
>
> In the meantime, please also try the USB3 device support on the latest
> Krogoth BSP
> (https://yoctoproject.org/downloads/bsps/krogoth21/intel-corei7-64) on
> your setup, it contains a newer kernel, though it is not specifically
> meant for E3800.
>

Additionally, please dump the output of the registers if you see the 
error again:
# mount -t debugfs none /sys/kernel/debug
# cat /sys/kernel/debug/dwc3.0.auto/regdump

This should be done after the error appears but before the removing the 
USB cable.