drm/vc4: hdmi: Add more checks for 4k resolutions

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At least the 4096x2160@60Hz mode requires some overclocking that isn't
available by default, even if hdmi_enable_4kp60 is enabled.

Let's add some logic to detect whether we can satisfy the core clock
requirements for that mode, and prevent it from being used otherwise.

Signed-off-by: Dom Cobley <popcornmix@gmail.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://lore.kernel.org/r/20220815-rpi-fix-4k-60-v5-6-fe9e7ac8b111@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>

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Dom Cobley 2022-10-27 14:52:46 +02:00 • committed by Maxime Ripard

parent 2a001ca00a

commit f09e172da8

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3 changed files with 18 additions and 2 deletions

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6

drivers/gpu/drm/vc4/vc4_drv.h

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11

drivers/gpu/drm/vc4/vc4_hdmi.c

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3

drivers/gpu/drm/vc4/vc4_hvs.c

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