Hi, On Thu, 7 May 2020 at 21:02, Bin Meng <[email protected]> wrote: > > Hi Simon, > > On Fri, May 8, 2020 at 10:38 AM Simon Glass <[email protected]> wrote: > > > > Hi Bin, > > > > Does this work for you? It doesn't work for me in interrupt mode, only > > in control-endpoint mode. Is that expected? > > > > Also I notice that some broken devices don't work or cause a crash. > > > > I don't have a board to test xHCI right now, but from the commit > message I wrote the interrupt mode should be working. > > commit 1897d60130976ece389d5875187b78ba0d41428f > Author: Bin Meng <[email protected]> > Date: Mon Sep 18 06:40:41 2017 -0700 > > usb: xhci: Add interrupt transfer support > > xHCI uses normal TRBs for both bulk and interrupt. This adds the > missing interrupt transfer support to xHCI so that devices like > USB keyboard that uses interrupt transfer can work. > > Signed-off-by: Bin Meng <[email protected]>
Yes it does work, but it seems a bit fragile. E.g. if I unplug the keyboard I get: => WARN halted endpoint, queueing URB anyway. Unexpected XHCI event TRB, skipping... (78832cd0 00000000 13000000 01008400) BUG at /scratch/sglass/cosarm/src/third_party/u-boot/files/drivers/usb/host/xhci-ring.c:496/abort_td()! BUG! resetting ... Marek, I don't have EHCI so far as I know. This is Intel Apollo Lake. Regards, Simon
