From: Alvin Lee <alvin.lee2@xxxxxxx>
[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: Alvin Lee <alvin.lee2@xxxxxxx>
Reviewed-by: Jun Lei <Jun.Lei@xxxxxxx>
Acked-by: Eryk Brol <eryk.brol@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c b/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c
index 50b7d011705d..9e0ae18e71fa 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c
@@ -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;
--
2.25.1
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