drm/vc4: hdmi: Make sure our clock rate is within limits

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The HDMI controller cannot go above a certain pixel rate limit depending on
the generations, but that limit is only enforced in mode_valid at the
moment, which means that we won't advertise modes that exceed that limit,
but the userspace is still free to try to setup a mode that would.

Implement atomic_check to make sure we check it in that scenario too.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201029122522.1917579-1-maxime@cerno.tech

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Maxime Ripard 2020-10-29 13:25:21 +01:00

parent cdf117d6d3

commit 63495f6b4a

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drivers/gpu/drm/vc4/vc4_hdmi.c

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