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| author | Maxime Ripard <maxime@cerno.tech> | 2021-01-11 15:23:00 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-04 11:37:48 +0100 |
| commit | ecd8c7420ee208d13e564e56bf0d2a43ef03039a (patch) | |
| tree | 73c05eb6c2ee289569a49a1f4177469d06d5d897 /drivers/gpu/drm/lima/lima_sched.c | |
| parent | b2c22c74462e90e8408336a418c092d98a24d20a (diff) | |
drm/vc4: hdmi: Compute the CEC clock divider from the clock rate
[ Upstream commit 163a3ef681e5e9d5df558e855d86ccd4708d6200 ]
The CEC clock divider needs to output a frequency of 40kHz from the HSM
rate on the BCM2835. The driver used to have a fixed frequency for it,
but that changed for the BCM2711 and we now need to compute it
dynamically to maintain the proper rate.
Fixes: cd4cb49dc5bb ("drm/vc4: hdmi: Adjust HSM clock rate depending on pixel rate")
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Link: https://patchwork.freedesktop.org/patch/msgid/20210111142309.193441-7-maxime@cerno.tech
(cherry picked from commit f1ceb9d10043683b89e5e5e5848fb4e855295762)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/lima/lima_sched.c')
0 files changed, 0 insertions, 0 deletions