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From: luigi burdo <intermediadc@hotmail.com>
Date: Thu, 28 Sep 2017 07:27:15 +0000
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Subject: Re: [Qemu-devel] ppce500 usb-ehci-pci issue on last uboot
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To: "qemu-ppc@nongnu.org" <qemu-ppc@nongnu.org>, qemu-devel <qemu-devel@nongnu.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>


Hi Gerd,
i had test it yesterday on Little Endian machine host (Apple  Osx Sierra)
the issue is present there too.

Ciao
Luigi


________________________________

hi Gerd,
yes the host is a big endian but i can test it on an little endian host too=
 and report.
About xhci or ohci the uboot dont recognize it . ehci-pci are the only usb =
pci board from where uboot on ppce500 vm  can make the load from device or =
use directly the device attached on  it if cmd reset work for initislize th=
e board.


> Il giorno 27 set 2017, alle ore 13:34, Gerd Hoffmann <kraxel@redhat.com> =
ha scritto:
>
>  Hi,
>
>> "actually, I tried it yesterday and it seems to be a bug in qemu in
>> case you reset the EHCI controller, it doesn't come out of reset for
>> whatever reason ... so you probably want to talk to the qemu guys,
>> it's when U-Boot sets USBCMD RESET bit and then does handshake, the
>> controller is stuck with reset bit asserted"
>>
>>
>> i ask if possible to fix it?
>
> Nothing obvious in the ehci reset code.  Needs someone debugging it ...
>
> Is this on a bigendian host?  If so this could be endian bugs in the
> ehci emulation.
>
> You could also try xhci or ohci instead, these are known-working on
> bigendian hosts (used by ppc64 pseries).
>
> cheers,
>  Gerd
>
>