On Feb 13, 2014, at 10:19 AM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Thu, 13 Feb 2014, Peter Chen wrote: > >>>> - If you have a usb bus analyzer, please check if the GET_DESCRPTOR sends out successfully. >>>> (Most probably, I don't think it sends out) >>> >>> I've attached a screen cap of the USB capture. At the to in red is the "SETUP txn" that fails in u-boot (shows Timed Out). Below on the second capture, the Get Descriptor succeeds to the same device, but this time from Linux. > > Have you compared the capture result with the same thing on a Linux PC? > > Can you make the capture data available publicly? Meant to add that the capture data is two captures. One is u-boot, the other is Linux. The SETUP packets look identical. I feel like this problem is completely in the driver. Something is not getting configured correctly with the qH/qTD. I'm still working on getting the Linux side of this out. -- Servergy : http://www.servergy.com/ SwissDisk : http://www.swissdisk.com/ Ubuntu : http://www.ubuntu.com/ My Blog : http://ben-collins.blogspot.com/
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