diff options
| author | Duncan Ma <duncan.ma@amd.com> | 2022-08-15 17:37:32 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-08-30 16:59:55 -0400 |
| commit | d1b4a51a4ca8954f30cf4671b25c4f8637c45600 (patch) | |
| tree | 2cfc07adfe7d37885db234512f83b1989dfc8145 /drivers/gpu/drm/amd | |
| parent | 507fd7c400032b126747a5ae8cca2816d73f009a (diff) | |
| download | linux-d1b4a51a4ca8954f30cf4671b25c4f8637c45600.tar.bz2 | |
drm/amd/display: Fix OTG H timing reset for dcn314
[Why]
When ODM is enabled, H timing control register reset
to 0. Div mode manual field get overwritten causing
no display on certain modes for dcn314.
[How]
Use REG_UPDATE instead of REG_SET to set div_mode
field.
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Brian Chang <Brian.Chang@amd.com>
Signed-off-by: Duncan Ma <duncan.ma@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn314/dcn314_optc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_optc.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_optc.c index 0c7980266b85..38aa28ec6b13 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_optc.c +++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_optc.c @@ -98,7 +98,8 @@ static void optc314_set_odm_combine(struct timing_generator *optc, int *opp_id, REG_UPDATE(OPTC_WIDTH_CONTROL, OPTC_SEGMENT_WIDTH, mpcc_hactive); - REG_SET(OTG_H_TIMING_CNTL, 0, OTG_H_TIMING_DIV_MODE, opp_cnt - 1); + REG_UPDATE(OTG_H_TIMING_CNTL, + OTG_H_TIMING_DIV_MODE, opp_cnt - 1); optc1->opp_count = opp_cnt; } |