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<ma...@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<ma...@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 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
