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Message-ID: <ea7ef1e652f5664a41f2befc3cb97bd089f27e69.camel@kernel.crashing.org>
Subject: Re: [PATCH 2/2] drm/tiny: Add ofdrm for Open Firmware framebuffers
From:   Benjamin Herrenschmidt <benh@kernel.crashing.org>
To:     Geert Uytterhoeven <geert@linux-m68k.org>,
        Michal =?ISO-8859-1?Q?Such=E1nek?= <msuchanek@suse.de>
Cc:     Thomas Zimmermann <tzimmermann@suse.de>,
        Javier Martinez Canillas <javierm@redhat.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>, Helge Deller <deller@gmx.de>,
        Maxime Ripard <maxime@cerno.tech>,
        Sam Ravnborg <sam@ravnborg.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Paul Mackerras <paulus@samba.org>,
        DRI Development <dri-devel@lists.freedesktop.org>,
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Date:   Sat, 21 May 2022 11:35:14 +1000
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On Thu, 2022-05-19 at 09:11 +0200, Geert Uytterhoeven wrote:
> Hi Michal,
> 
> 
> 
> On Wed, May 18, 2022 at 8:54 PM Michal Suchánek <msuchanek@suse.de>
> wrote:
> 
> > On Wed, May 18, 2022 at 08:30:06PM +0200, Thomas Zimmermann wrote:
> > > --- a/drivers/gpu/drm/tiny/Kconfig
> > > +++ b/drivers/gpu/drm/tiny/Kconfig
> > > @@ -51,6 +51,18 @@ config DRM_GM12U320
> > >         This is a KMS driver for projectors which use the
> > > GM12U320 chipset
> > >         for video transfer over USB2/3, such as the Acer C120
> > > mini projector.
> > > +config DRM_OFDRM
> > > +     tristate "Open Firmware display driver"
> > > +     depends on DRM && MMU && PPC
> > Does this build with !PCI?
> > The driver uses some PCI functions, so it might possibly break with
> > randconfig. I don't think there are practical !PCI PPC
> > configurations.
> 
> 
> IIRC, the first PowerMacs didn't have PCI.

They also don't have OF and we never supported them upstream :-)

Cheers,
Ben.