From: Ovidiu Bunea <ovidiu.bu...@amd.com>
This reverts commit
db88df35a509 ("drm/amd/display: update DML2 policy
EnhancedPrefetchScheduleAccelerationFinal DCN35")
[why & how]
The offending commit exposes a hang with lid close/open behavior.
Both issues seem to be related to ODM 2:1 mode switching, so there
is another issue generic to that sequence that needs to be
investigated.
Cc: Mario Limonciello <mario.limoncie...@amd.com>
Cc: Alex Deucher <alexander.deuc...@amd.com>
Cc: sta...@vger.kernel.org
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
Signed-off-by: Ovidiu Bunea <ovidiu.bu...@amd.com>
Signed-off-by: Tom Chung <chiahsuan.ch...@amd.com>
---
drivers/gpu/drm/amd/display/dc/dml2/dml2_policy.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml2_policy.c
b/drivers/gpu/drm/amd/display/dc/dml2/dml2_policy.c
index 11c904ae2958..c4c52173ef22 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_policy.c
+++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_policy.c
@@ -303,6 +303,7 @@ void build_unoptimized_policy_settings(enum dml_project_id
project, struct dml_m
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;
}
--
2.34.1
