[PATCH] ARM: shmobile: defconfig: Restore graphical consoles

Laurent Pinchart laurent.pinchart at ideasonboard.com
Mon Jul 12 04:43:39 PDT 2021


Hi Geert,

On Mon, Jul 12, 2021 at 01:35:34PM +0200, Geert Uytterhoeven wrote:
> On Mon, Jul 12, 2021 at 1:25 PM Laurent Pinchart wrote:
> > On Mon, Jul 12, 2021 at 12:16:57PM +0200, Geert Uytterhoeven wrote:
> > > As of commit f611b1e7624ccdbd ("drm: Avoid circular dependencies for
> > > CONFIG_FB"), CONFIG_FB is no longer auto-enabled.  While CONFIG_FB may
> > > be considered unneeded for systems where graphics is provided by a DRM
> > > driver, R-Mobile A1 still relies on a frame buffer device driver for
> > > graphics support.
> > >
> > > Restore support for graphics on R-Mobile A1 and graphical consoles on
> > > DRM-based systems by explicitly enabling CONFIG_FB in the defconfig for
> > > Renesas ARM systems.
> >
> > Does anyone still care about the Armadillo board ?
> 
> I do. It's my only Renesas board with graphical output ;-)

I recommend a VGA or HDMI monitor :-) The sh-mobile-lcdcfb driver is
unmaintained. If nostalgia is a big enough drive factor, you could try
converting R-Mobile A1 to the shmob-drm driver :-)

> > This being said, I think CONFIG_FB should be added , but for a different
> > reason. There's no KMS console driver, so the only option we have today,
> > even when a KMS driver is available, is to go through FBDEV emulation,
> > which requires CONFIG_FB to be enabled.
> 
> That's covered by "Restore [...] graphical consoles on DRM-based
> systems", right?

I had read the commit message as implying that a graphical console can
be available without FB when a KMS driver is available.

-- 
Regards,

Laurent Pinchart



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