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| author | Michael Strauss <michael.strauss@amd.com> | 2022-10-20 15:57:36 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-11-09 17:41:41 -0500 |
| commit | ea192af507d99014775a757bbdb5f6e487fc6c7a (patch) | |
| tree | 296acb3a495101042397cac95ccd069c7d2d9216 /drivers/gpu/drm/amd/display/dc/dm_helpers.h | |
| parent | 1df6b9b07e334cee60afebcaca69297477655325 (diff) | |
| download | linux-ea192af507d99014775a757bbdb5f6e487fc6c7a.tar.gz linux-ea192af507d99014775a757bbdb5f6e487fc6c7a.tar.bz2 linux-ea192af507d99014775a757bbdb5f6e487fc6c7a.zip | |
drm/amd/display: Only update link settings after successful MST link train
[WHY]
Currently driver reduces verified link caps on DPIA devices if a link is
trained at a link rate below the max rate verified during link detection.
This blocks high bandwidth modes after setting a low bandwidth mode.
[HOW]
Only update link rate after a successful link train if link is MST.
Reviewed-by: Mustapha Ghaddar <Mustapha.Ghaddar@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@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/dc/dm_helpers.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dm_helpers.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dm_helpers.h b/drivers/gpu/drm/amd/display/dc/dm_helpers.h index e3e5c39895a3..af1c50ed905a 100644 --- a/drivers/gpu/drm/amd/display/dc/dm_helpers.h +++ b/drivers/gpu/drm/amd/display/dc/dm_helpers.h @@ -116,6 +116,11 @@ bool dm_helpers_dp_mst_start_top_mgr( bool dm_helpers_dp_mst_stop_top_mgr( struct dc_context *ctx, struct dc_link *link); + +void dm_helpers_dp_mst_update_branch_bandwidth( + struct dc_context *ctx, + struct dc_link *link); + /** * OS specific aux read callback. */ |