diff options
| author | Jimmy Kizito <Jimmy.Kizito@amd.com> | 2022-01-19 16:24:37 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-01-25 18:00:34 -0500 |
| commit | 31d64b8219e057705d7a9debffcf6abbccb7781e (patch) | |
| tree | fefcbbb3ecdf08d7ef66a36381af61cb0ba1f928 /drivers/gpu/drm/amd/display/include | |
| parent | c282d9512cdd167384fe0d233d13deea538658f2 (diff) | |
drm/amd/display: Add work around to enforce TBT3 compatibility.
[Why]
According to the USB4 specification, FEC and DSC should be disabled
when a USB4 DPIA operates in TBT3 compatibility mode.
[How]
Upon detecting that a USB4 DPIA is connected to a device that is known
to operate in TBT3 mode, disable FEC and DSC support if they have been
reported by the TBT3 device.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Meenakshikumar Somasundaram <Meenakshikumar.Somasundaram@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/include')
| -rw-r--r-- | drivers/gpu/drm/amd/display/include/ddc_service_types.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/include/ddc_service_types.h b/drivers/gpu/drm/amd/display/include/ddc_service_types.h index a2b80514d83e..57f92bd2814f 100644 --- a/drivers/gpu/drm/amd/display/include/ddc_service_types.h +++ b/drivers/gpu/drm/amd/display/include/ddc_service_types.h @@ -34,6 +34,8 @@ #define DP_BRANCH_DEVICE_ID_90CC24 0x90CC24 #define DP_BRANCH_DEVICE_ID_00E04C 0x00E04C #define DP_BRANCH_DEVICE_ID_006037 0x006037 +#define DP_BRANCH_HW_REV_10 0x10 +#define DP_BRANCH_HW_REV_20 0x20 #define DP_DEVICE_ID_38EC11 0x38EC11 enum ddc_result { |