drm/amd/display: Disable stutter when programming watermarks on dcn32

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[WHY&HOW]
Reprogramming watermarks with stutter allowed can cause instability on
some ASICs. Disable it prior to raising watermarks (prepare bandwidth),
then re-enable after lowering (optimize bandwidth).

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Dillon Varone 2025-09-15 11:22:52 -04:00 • committed by Alex Deucher

parent 854b9ab637

commit c82b8f96eb

4 changed files with 36 additions and 6 deletions

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1

drivers/gpu/drm/amd/display/dc/dc.h

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37

drivers/gpu/drm/amd/display/dc/hubbub/dcn32/dcn32_hubbub.c

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1

drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c

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3

drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.h

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