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From: luigi burdo <intermediadc@hotmail.com>
Date: Wed, 27 Sep 2017 12:21:30 +0000
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Subject: Re: [Qemu-devel] ppce500 usb-ehci-pci issue on last uboot
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To: Gerd Hoffmann <kraxel@redhat.com>
Cc: "qemu-ppc@nongnu.org" <qemu-ppc@nongnu.org>, qemu-devel <qemu-devel@nongnu.org>

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.

regards
luigi

Inviato da iPad

> Il giorno 27 set 2017, alle ore 13:34, Gerd Hoffmann <kraxel@redhat.com> =
ha scritto:
>=20
>  Hi,
>=20
>> "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"
>>=20
>>=20
>> i ask if possible to fix it?
>=20
> Nothing obvious in the ehci reset code.  Needs someone debugging it ...
>=20
> Is this on a bigendian host?  If so this could be endian bugs in the
> ehci emulation.
>=20
> You could also try xhci or ohci instead, these are known-working on
> bigendian hosts (used by ppc64 pseries).
>=20
> cheers,
>  Gerd
>=20
>=20