diff options
| author | Mario Limonciello <Mario.Limonciello@amd.com> | 2025-08-27 12:17:19 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-09-15 17:01:02 -0400 |
| commit | db291ed1732e02e79dca431838713bbf602bda1c (patch) | |
| tree | 78657d60789bb8d7d650298bc5a062bf26640d39 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | |
| parent | 5e76bc677cb7c92b37d8bc66bb67a18922895be2 (diff) | |
drm/amd/display: Add fallback path for YCBCR422
[Why]
DP validation may fail with multiple displays and higher color depths.
The sink may support others though.
[How]
When DP bandwidth validation fails, progressively fallback through:
- YUV422 8bpc (bandwidth efficient)
- YUV422 6bpc (reduced color depth)
- YUV420 (last resort)
This resolves cases where displays would show no image due to insufficient
DP link bandwidth for the requested RGB mode.
Suggested-by: Mauri Carvalho <mcarvalho3@lenovo.com>
Reviewed-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Mario Limonciello <Mario.Limonciello@amd.com>
Signed-off-by: Ray Wu <ray.wu@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/display/amdgpu_dm/amdgpu_dm.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index ce74125c713e..2967cd28efe4 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -794,6 +794,7 @@ struct amdgpu_dm_connector { bool fake_enable; bool force_yuv420_output; + bool force_yuv422_output; struct dsc_preferred_settings dsc_settings; union dp_downstream_port_present mst_downstream_port_present; /* Cached display modes */ |