drm/amd/display: DCN2.x Do not program DPPCLK if same value

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[WHY]
Programming DPPCLK to the same value currently set may cause
underflow while playing video in certain conditions.

[HOW]
Only program DPPCLK if clock is not the same as the
previous value programmed.

Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Sung Lee 2020-02-04 15:49:54 -05:00 • committed by Alex Deucher

parent 1094c34ec5

commit 8fab6a2faa

1 changed files with 1 additions and 1 deletions

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drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c

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