[U-Boot] Issue with USB mass storage (thumb drives)

[Sergei Temerkhanov]

On Wed, Feb 3, 2016 at 8:40 AM, Marek Vasut <marex at denx.de> wrote:
> On Wednesday, February 03, 2016 at 12:49:20 PM, Schrempf Frieder wrote:
>> On 03.02.2016 12:12, Marek Vasut wrote:
>> > On Wednesday, February 03, 2016 at 11:15:00 AM, Schrempf Frieder wrote:
>> >> On 03.02.2016 10:55, Fabio Estevam wrote:
>> >>> On Wed, Feb 3, 2016 at 7:40 AM, Marek Vasut <marex at denx.de> wrote:
>> >>>> In that case, debug time.
>> >>>>
>> >>>> Usual problems are bad routing of the tracks on the board , so try
>> >>>> with USB 1.1 hub and if that works, that's your problem.
>> >>>
>> >>> Another suggestion would be to try the 100MB transfer in Linux and see
>> >>> if this works or not.
>> >>>
>> >>> That would help us to narrow down whether this is a hardware or
>> >>> software problem.

Another thing to try may be limiting the value of USB_MAX_XFER_BLK in
common/usb_storage.c


Regards,
Sergey

>> >>
>> >> Thank you Marek and Fabio for your input!
>> >>
>> >> I tried the file transfer in Linux and this seems to work fine.
>> >> Also we have been using this hardware for quite some time, also with USB
>> >> mass storage and large files in Linux and I can't remember any problems.
>> >> For these reasons I think that the hardware is ok.
>> >>
>> >> I added the DEBUG defines and here are the lines around one of the
>> >> timeouts. With my very limited knowledge of how usb works, I can't read
>> >
>> >> much from those messages:
>> > It'd help if you shared your patch and the whole output. That way we can
>> > check if something goes wrong at the beginning.
>> >
>> > I wonder if we might be facing some misconfiguration of the USB PHY here
>> > ?
>> >
>> > I don't have a MX6Solo . Fabio, any chance you can try ?
>>
>> Here is the debug log for "usb reset": http://paste.ubuntu.com/14865306/
>> And here the log for the file transfer (different thumb drive and
>> therefore different messages than posted before):
>> http://paste.ubuntu.com/14865349/
>>
>> The only changes to U-Boot I made is adding my board configuration
>> (derived from Freescale SabreSD config).
>> The only difference from the SabreSD config related to USB is, that I
>> have set CONFIG_USB_MAX_CONTROLLER_COUNT to 2 instead of 1.
>
> The detection seems fine, it even does what it's supposed to do.
>
> You have a USB hub somewhere in there, right ? Is it a powered one or not ?
>
> What I find weird in the later log is that the failure always happens when
> the buffer is at 0x19fffe00 . I suppose you're loading to 0x18000000 and you
> have 0x20000000 or 512MiB of RAM (?). Try loading to 0x8000000 and see if
> that helps. If it does, then you might be overwriting some malloc area of
> U-Boot or somesuch .
>
> Best regards,
> Marek Vasut
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot