Commit 974ce181 authored Apr 06, 2023 by Aurabindo Pillai Committed by Alex Deucher Apr 21, 2023

drm/amd/display: Add check for PState change in DCN32



For pstate change, allow DML to loop through
all possible prefetch combinations so as to
support more display configurations. Set the max
and min prefetch modes to enable the sequence.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent a1f1fecd

drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -4656,6 +4656,10 @@ void dml32_CalculateMinAndMaxPrefetchMode(
		} else if (AllowForPStateChangeOrStutterInVBlankFinal == dm_prefetch_support_uclk_fclk_and_stutter) {
		*MinPrefetchMode = 0;
		*MaxPrefetchMode = 0;
		} else if (AllowForPStateChangeOrStutterInVBlankFinal ==
		dm_prefetch_support_uclk_fclk_and_stutter_if_possible) {
		*MinPrefetchMode = 0;
		*MaxPrefetchMode = 3;
		} else {
		*MinPrefetchMode = 0;
		*MaxPrefetchMode = 3;