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

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
...@@ -5558,7 +5558,7 @@ static void CalculateWatermarksAndDRAMSpeedChangeSupport( ...@@ -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; *DRAMClockChangeSupport = dm_dram_clock_change_vactive;
} else if (((mode_lib->vba.SynchronizedVBlank == true || mode_lib->vba.TotalNumberOfActiveOTG == 1 || SecondMinActiveDRAMClockChangeMarginOneDisplayInVBLank > 0) && PrefetchMode == 0)) { } else if (((mode_lib->vba.SynchronizedVBlank == true || mode_lib->vba.TotalNumberOfActiveOTG == 1 || SecondMinActiveDRAMClockChangeMarginOneDisplayInVBLank > 0) && PrefetchMode == 0)) {
*DRAMClockChangeSupport = dm_dram_clock_change_vblank; *DRAMClockChangeSupport = dm_dram_clock_change_vblank;
......
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