drm/amd/display: Intermittent DCN2 pipe hang on mode change

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[Why]
GSL is being used to synchronize pipes when vsync is off but
on transition to vsync on during a mode change GSL is not
being reset correctly.

[How]
Disable GSL on any plane that is disabled.

Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Aric Cyr 2019-04-22 17:45:11 -04:00 • committed by Alex Deucher

parent f446489adc

commit 6bd8d7d3f7

2 changed files with 12 additions and 5 deletions

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15

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

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2

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.h

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