On Wed, 10 Sep 2014, Felipe Balbi wrote:

> Hi,
> 
> On Wed, Sep 10, 2014 at 11:02:23PM +0400, Matwey V. Kornilov wrote:
> > 2014-09-10 19:53 GMT+04:00 Felipe Balbi <ba...@ti.com>:
> > > you probably need a USB sniffer. usbmon (Documentation/usb/usbmon.txt)
> > > will help to some extent, but some details can only be seen with a hw
> > > sniffer.
> > 
> > Hi
> > 
> > To this moment I've found the following. Angstrom 3.8 works as
> > expected, 3.16 also works until it wants GET_DESCRIPTOR.
> > 
> > 3.8:
> > 
> > dcbdd1c0 1596835984 S Ci:1:000:0 s 80 06 0100 0000 0040 64 <
> > dcbdd1c0 1596836075 C Ci:1:000:0 0 18 = 12010002 00000040 fe132341 00010102 
> > 0301
> > 
> > 3.16:
> > 
> > dd063d00 3246071559 S Ci:2:000:0 s 80 06 0100 0000 0040 64 <
> > dd063d00 3246071607 C Ci:2:000:0 -71 0
> 
> hmmm, protocol error.
> 
> > I don't know why the ports enumeration is different, maybe this is due
> > converting to dts.
> 
> unlikely to be the case.

If all else fails, git bisect might pinpoint the cause of the problem.

Alan Stern

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