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(parent: 97a03a2) | patch
drm/vc4: Increase the core clock based on HVS load
authorMaxime Ripard <maxime@cerno.tech>
Mon, 25 Oct 2021 15:29:03 +0000 (17:29 +0200)
committerMaxime Ripard <maxime@cerno.tech>
Thu, 4 Nov 2021 09:37:14 +0000 (10:37 +0100)
commit522f1ad75f17f4020dd61c3120974fcea25920b1
tree5afe5be64e8f06650a940cee93b050d6b4b59a56tree | snapshot
parent97a03a2ac93f38ba58f21c248f16780d3470ee12commit | diff
drm/vc4: Increase the core clock based on HVS load

Depending on a given HVS output (HVS to PixelValves) and input (planes
attached to a channel) load, the HVS needs for the core clock to be
raised above its boot time default.

Failing to do so will result in a vblank timeout and a stalled display
pipeline.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://lore.kernel.org/r/20211025152903.1088803-11-maxime@cerno.tech
drivers/gpu/drm/vc4/vc4_crtc.c diff | blob | history
drivers/gpu/drm/vc4/vc4_drv.h diff | blob | history
drivers/gpu/drm/vc4/vc4_kms.c diff | blob | history
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