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/amdgpu/amdgpu_drv.c | |
| parent | b322a50d17ede5cff6622040f345228afecdcc45 (diff) | |
| download | linux-a51482458dafb836dbf7c8ae3200ca8db7348201.tar.gz | |
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/amdgpu/amdgpu_drv.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 6f30c525caac..975be7d78d6d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -160,6 +160,7 @@ int amdgpu_smu_pptable_id = -1; * highest. That helps saving some idle power. * DISABLE_FRACTIONAL_PWM (bit 2) disabled by default * PSR (bit 3) disabled by default + * EDP NO POWER SEQUENCING (bit 4) disabled by default */ uint amdgpu_dc_feature_mask = 2; uint amdgpu_dc_debug_mask; |