drm/vc4: kms: Warn if we have an incompatible muxing setup

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The documentation explicitly states we must prevent the output
2 and 3 from feeding from the same HVS channel.

Let's add a warning to make some noise if we ever find ourselves in such
a case.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20220328153659.2382206-6-maxime@cerno.tech

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Maxime Ripard 2022-03-28 17:36:58 +02:00

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commit 457e5184b9

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drivers/gpu/drm/vc4/vc4_kms.c

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