Commit 4294f722 authored by Jun Lei's avatar Jun Lei Committed by Alex Deucher
Browse files

drm/amd/display: add 50us buffer as WA for pstate switch in active 



Signed-off-by: default avatarJun Lei <Jun.Lei@amd.com>
Reviewed-by: default avatarAric Cyr <Aric.Cyr@amd.com>
Acked-by: default avatarLeo Li <sunpeng.li@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent acf83f86

drivers/gpu/drm/amd/display/dc/dml/dcn20/display_mode_vba_20.c

+2 −1
Original line number Diff line number Diff line
@@ -2577,7 +2577,8 @@ static void dml20_DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPer 
			mode_lib->vba.MinActiveDRAMClockChangeMargin

					+ mode_lib->vba.DRAMClockChangeLatency;



	if (mode_lib->vba.MinActiveDRAMClockChangeMargin > 0) {

	if (mode_lib->vba.MinActiveDRAMClockChangeMargin > 50) {

		mode_lib->vba.DRAMClockChangeWatermark += 25;

		mode_lib->vba.DRAMClockChangeSupport[0][0] = dm_dram_clock_change_vactive;

	} else {

		if (mode_lib->vba.SynchronizedVBlank || mode_lib->vba.NumberOfActivePlanes == 1) {

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