diff options
| author | Zhan Liu <zhan.liu@amd.com> | 2021-06-14 14:54:14 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-06-29 23:41:22 -0400 |
| commit | a51482458dafb836dbf7c8ae3200ca8db7348201 (patch) | |
| tree | 0d94938411be69cbebb5b59659a90a723dbf7c87 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | |
| parent | b322a50d17ede5cff6622040f345228afecdcc45 (diff) | |
drm/amd/display: Enabling eDP no power sequencing with DAL feature mask
[Why]
Sometimes, DP receiver chip power-controlled externally by an
Embedded Controller could be treated and used as eDP,
if it drives mobile display. In this case,
we shouldn't be doing power-sequencing, hence we can skip
waiting for T7-ready and T9-ready."
[How]
Added a feature mask to enable eDP no power sequencing feature.
To enable this, set 0x10 flag in amdgpu.dcfeaturemask on
Linux command line.
Signed-off-by: Zhan Liu <zhan.liu@amd.com>
Reviewed-by: Nikola Cornij <Nikola.Cornij@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index b5b5ccf0ed71..2688a2e759de 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1160,6 +1160,9 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) if (amdgpu_dc_feature_mask & DC_DISABLE_FRACTIONAL_PWM_MASK) init_data.flags.disable_fractional_pwm = true; + if (amdgpu_dc_feature_mask & DC_EDP_NO_POWER_SEQUENCING) + init_data.flags.edp_no_power_sequencing = true; + init_data.flags.power_down_display_on_boot = true; INIT_LIST_HEAD(&adev->dm.da_list); |