[U-Boot] USB3.0 Interrupt transfer in u-boot

Puneet Sharma puneet.sharma at moschip.com
Thu Apr 4 13:13:47 CEST 2013


Hello Vivek,

I did made use of the patches you added for XHCI support in u-boot and
with the help of them only was able to enumerate USB devices connected
over USB3.0 port and also do BULK transfer.

With respect to Interrupt transfer, i did tried to make use of kernel
code but unfortunately couldn't made it work. If you can give some tips
or guidance of where should i look that would be very helpful for me.

Thanks
Puneet


On Thu, 2013-04-04 at 16:33 +0530, Vivek Gautam wrote:
> Hello Puneet,
>
>
> On Thu, Apr 4, 2013 at 11:55 AM, Puneet Sharma
> <puneet.sharma at moschip.com> wrote:
> > Hello,
> >
> > I want to test USB keyboard for XHCI in u-boot and to do that i need the
> > Interrupt transfer code in XHCI controller driver in u-boot. If
> > possible, can you help me to give that piece of code or can you help me
> > to figure out in kernel where can i find it so that i can try to
> > replicate it in u-boot and make it work.
>
> We had posted some patches for XHCI stack driver, but unfortunately
> that didn't have support
> for interrupt transfer.
> Please check in the Linux kernel (drivers/usb/host/xhci*), see if you
> can find something for your use
> which can be added to this XHCI stack to enable support for interrupt transfer.
>
>
>

--
Puneet Sharma <puneet.sharma at moschip.com>


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