Commit 508300a5 authored by Alvin Lee's avatar Alvin Lee Committed by Alex Deucher
Browse files

drm/amd/display: Don't allow pstate if no support in blank 



[Why]
We will hang if we report switch in VACTIVE but not in VBLANK and DPG_EN = 1

[How]
Block switch in ACTIVE if not supported in BLANK

Signed-off-by: default avatarAlvin Lee <alvin.lee2@amd.com>
Reviewed-by: default avatarJun Lei <Jun.Lei@amd.com>
Acked-by: default avatarEryk Brol <eryk.brol@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 95d620ad

drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c

+1 −1
Original line number Diff line number Diff line
@@ -5558,7 +5558,7 @@ static void CalculateWatermarksAndDRAMSpeedChangeSupport( 
		}

	}



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

	if (mode_lib->vba.MinActiveDRAMClockChangeMargin > 0 && PrefetchMode == 0) {

		*DRAMClockChangeSupport = dm_dram_clock_change_vactive;

	} else if (((mode_lib->vba.SynchronizedVBlank == true || mode_lib->vba.TotalNumberOfActiveOTG == 1 || SecondMinActiveDRAMClockChangeMarginOneDisplayInVBLank > 0) && PrefetchMode == 0)) {

		*DRAMClockChangeSupport = dm_dram_clock_change_vblank;

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