From: Gerd Hoffmann <kraxel@redhat.com>
To: luigi burdo <intermediadc@hotmail.com>,
"qemu-ppc@nongnu.org" <qemu-ppc@nongnu.org>,
qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] ppce500 usb-ehci-pci issue on last uboot
Date: Wed, 27 Sep 2017 13:34:47 +0200 [thread overview]
Message-ID: <1506512087.25036.10.camel@redhat.com> (raw)
In-Reply-To: <AM5P194MB0132C46F9FCCF1DCF2FFC7D0C87A0@AM5P194MB0132.EURP194.PROD.OUTLOOK.COM>
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
next prev parent reply other threads:[~2017-09-27 11:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-25 19:10 [Qemu-devel] ppce500 usb-ehci-pci issue on last uboot luigi burdo
2017-09-27 11:34 ` Gerd Hoffmann [this message]
2017-09-27 12:21 ` luigi burdo
2017-09-28 7:27 ` luigi burdo
2017-09-28 8:07 ` Gerd Hoffmann
2017-09-28 8:28 ` luigi burdo
2017-11-14 13:33 ` Gerd Hoffmann
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