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

[Schrempf Frieder <frieder.schrempf@exceet.de>]

On 04.02.2016 12:28, Marek Vasut wrote:
> On Thursday, February 04, 2016 at 09:21:08 AM, Schrempf Frieder wrote:
>> On 03.02.2016 20:16, Sergei Temerkhanov wrote:
>>> On Wed, Feb 3, 2016 at 8:40 AM, Marek Vasut<marex@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@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
>> This was a really helpful hint! Thank you Sergei!
>>
>> I just tried to limit USB_MAX_XFER_BLK to 1/8 of the original value
>> (65535 -> 8191) and this time the transfer works without timeouts.
>>
>> As we have a customer who needs this working as soon as possible my
>> question now is how to properly solve this.
>> Should I generally limit USB_MAX_XFER_BLK in my u-boot to avoid these
>> errors? Which value to choose?
> Nice! Can you share which sticks are those, ideally brand/type and USB IDs ?
At the moment I have two sticks with the same chip around for which 
setting USB_MAX_XFER_BLK from 65535 to 32767 fixed the file transfer.
Also one of our customers tested a few non-working sticks with this 
change and reported, that it fixed it for him.
Here's a list of those devices, but I guess there are a lot more:

1. Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash 
Drive, VID: 0x090c, PID: 0x1000
2. Freecom Technologies, VID: 0x07ab, PID: 0xfcf1
3. Newron, VID: 0x8644, PID: 0x800e
4. GEMBIRD PhotoFrame PF-15-1, VID:  0x1908, PID: 0x1320