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| /openbmc/linux/drivers/gpu/drm/vc4/ |
| H A D | vc4_kms.c | fc041428 Thu Oct 27 07:52:47 CDT 2022 Maxime Ripard <maxime@cerno.tech> drm/vc4: Make sure we don't end up with a core clock too high
Following the clock rate range improvements to the clock framework,
trying to set a disjoint range on a clock will now result in an error.
Thus, we can't set a minimum rate higher than the maximum reported by
the firmware, or clk_set_min_rate() will fail.
Thus we need to clamp the rate we are about to ask for to the maximum
rate possible on that clock.
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://lore.kernel.org/r/20220815-rpi-fix-4k-60-v5-7-fe9e7ac8b111@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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