6.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yihan Zhu <Yihan.Zhu@xxxxxxx>
commit 0d5e5e8a0aa49ea2163abf128da3b509a6c58286 upstream.
[WHY & HOW]
Mismatch in DCN35 DML2 cause bw validation failed to acquire unexpected DPP pipe to cause
grey screen and system hang. Remove EnhancedPrefetchScheduleAccelerationFinal value override
to match HW spec.
Cc: Mario Limonciello <mario.limonciello@xxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Reviewed-by: Charlene Liu <charlene.liu@xxxxxxx>
Signed-off-by: Yihan Zhu <Yihan.Zhu@xxxxxxx>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
(cherry picked from commit 9dad21f910fcea2bdcff4af46159101d7f9cd8ba)
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dml2/dml2_policy.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_policy.c
+++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_policy.c
@@ -303,7 +303,6 @@ void build_unoptimized_policy_settings(e
if (project == dml_project_dcn35 ||
project == dml_project_dcn351) {
policy->DCCProgrammingAssumesScanDirectionUnknownFinal = false;
- policy->EnhancedPrefetchScheduleAccelerationFinal = 0;
policy->AllowForPStateChangeOrStutterInVBlankFinal = dml_prefetch_support_uclk_fclk_and_stutter_if_possible; /*new*/
policy->UseOnlyMaxPrefetchModes = 1;
}
