(subset) [PATCH] drm/vc4: hdmi: Ensure we don't use 2711 HPD registers on Pi0-3

[Maxime Ripard]

On Thu, 27 Jan 2022 14:17:54 +0100, Maxime Ripard wrote:
> From: Dave Stevenson <dave.stevenson at raspberrypi.com>
> 
> The existing logic was flawed in that it could try reading the
> 2711 specific registers for HPD on a CM1/3 where the HPD GPIO
> hadn't been defined in DT.
> 
> Ensure we don't do the 2711 register read on invalid hardware,
> and then
> 
> [...]

Applied to drm/drm-misc (drm-misc-fixes).

Thanks!
Maxime