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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Tue, 09 Aug 2016 21:49:54 +1000
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Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH] adb: change handler only when
 recognized
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To: BALATON Zoltan <balaton@eik.bme.hu>, Howard Spoelstra <hsp.cat7@gmail.com>
Cc: qemu-ppc@nongnu.org, Peter Maydell <peter.maydell@linaro.org>, =?ISO-8859-1?Q?Herv=E9?= Poussineau <hpoussin@reactos.org>, qemu-devel@nongnu.org, Programmingkid <programmingkidx@gmail.com>

On Tue, 2016-08-09 at 12:26 +0200, BALATON Zoltan wrote:
> On Tue, 9 Aug 2016, Howard Spoelstra wrote:
> >=20
> > Openbios has problems with the USB keyboard when one specifically def=
ines
> > e.g., -device ich9-usb-uhci1,id=3Dnewusb -device usb-mouse,bus=3Dnewu=
sb.0
> > (which is needed to get mouse/keyboard going in OSX 10.5)
>=20
> I think it does not have a UHCI driver, only minimal HID support on OHC=
I.=C2=A0
> I could not reproduce a problem with this command on the master HEAD=C2=
=A0
> version, only if I create a usb-kbd explicitely with -device is when it=
=C2=A0
> does not work. Creating only a usb-mouse on either pci-ohci or=C2=A0
> ich9-usb-uhci1 (does that make sense on a PPC Mac?) seems working for m=
e=C2=A0
> and still have keyboard in OpenBIOS but adding a keyboard this way inde=
ed=C2=A0
> has a problem.

UHCI definitely doesn't make sense on a ppc mac. OHCI and EHCI do.

Cheers,
Ben.