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| author | David Galiffi <david.galiffi@amd.com> | 2019-06-24 17:34:13 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-08-15 18:53:30 +0300 |
| commit | 0b226322434c7786381d7a594efca9cc46f85211 (patch) | |
| tree | 77444e6807ceac9e22bf0f4344af6d76604c7a01 /drivers/gpu/drm/amd/display/dc/dc_dp_types.h | |
| parent | 36756dcbcf474466f7243fcec21af90ee40e72be (diff) | |
| download | linux-0b226322434c7786381d7a594efca9cc46f85211.tar.xz | |
drm/amd/display: Synchronous DisplayPort Link Training
[WHY]
We require a method to perform synchronous link training.
[HOW]
Sync LT is broken into 3 basic steps.
"Begin" starts the state machine, and resets "preferred" link settings.
"Attempt" will attempt to train the link with a given set of training
parameters.
"End" stops the state machine, and will optionally disable the link phy.
Between "Begin" and "End" DPCD:600h must not be set to "2"
(D3:Powered Down).
Between "Begin" and "End", there may be multiple "Attempts" with different
training parameters.
Signed-off-by: David Galiffi <david.galiffi@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_dp_types.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_dp_types.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h index efa7a47f6b7e..ef79a686e4c2 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h @@ -128,7 +128,10 @@ struct dc_link_training_overrides { enum dc_link_spread *downspread; bool *alternate_scrambler_reset; bool *enhanced_framing; + bool *mst_enable; +#ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT bool *fec_enable; +#endif }; union dpcd_rev { |