diff options
| author | Yogesh Mohan Marimuthu <yogesh.mohanmarimuthu@amd.com> | 2019-08-02 10:52:49 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-08-23 11:42:18 -0500 |
| commit | 1e7f100ce8c0640634b794604880d9204480c9f1 (patch) | |
| tree | e2271a7cb95c11ed948784fbec298f3bf555e960 /drivers | |
| parent | 436d96357fa956c4723b3400d88ae47cb0e2f4cd (diff) | |
drm/amd/display: fix trigger not generated for freesync
[Why]
In newer hardware MANUAL_FLOW_CONTROL is not a trigger bit. Due to this
front porch is fixed and in these hardware freesync does not work.
[How]
Change the programming to generate a pulse so that the event will be
triggered, front porch will be cut short and freesync will work.
Signed-off-by: Yogesh Mohan Marimuthu <yogesh.mohanmarimuthu@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c index e5e5be63032b..e98e6bab4808 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c @@ -825,6 +825,9 @@ void optc1_program_manual_trigger(struct timing_generator *optc) REG_SET(OTG_MANUAL_FLOW_CONTROL, 0, MANUAL_FLOW_CONTROL, 1); + + REG_SET(OTG_MANUAL_FLOW_CONTROL, 0, + MANUAL_FLOW_CONTROL, 0); } |