drm/amd/display: Set compbuf size to min at prep prevent overbook crb

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[Why]
Detbuffer size is dynamically set for dcn31x. At certain moment,
compbuf+(def size * num pipes) > config return buffer size causing
flickering. This is easily reproducible when MPO is
enabled with two displays.

[How]
At prepare BW, use the min comp buffer size. When it is to
optimize BW, set compbuf size back to maximum possible size.

Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Duncan Ma <duncanma@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Duncan Ma 2022-02-08 15:05:09 -05:00 • committed by Alex Deucher

parent 5b45b1c8b8

commit b51178d6ed

1 changed files with 1 additions and 0 deletions

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drivers/gpu/drm/amd/display/dc/dcn315/dcn315_resource.c

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