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| author | Michael Strauss <michael.strauss@amd.com> | 2022-07-25 16:24:42 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-09-29 09:41:46 -0400 |
| commit | e844cc250f33d207077d0af9337484d6c94048f0 (patch) | |
| tree | 14d9f9652ded2b1505299d0a6744457fec1711d8 /drivers/gpu/drm/amd/display/include | |
| parent | ce438e99015871b9226c27066fe72fc05f18e8bf (diff) | |
| download | linux-e844cc250f33d207077d0af9337484d6c94048f0.tar.gz linux-e844cc250f33d207077d0af9337484d6c94048f0.tar.bz2 linux-e844cc250f33d207077d0af9337484d6c94048f0.zip | |
drm/amd/display: Refactor LTTPR mode selection
[WHY]
Previously, LTTPR mode was decided during detection which makes
link training inflexible as mode can't be dynamically changed.
[HOW]
-Remove lttpr_mode from link struct, and move to link training settings
-Defer choosing LTTPR mode until link training
Other DP changes included:
-Only use fixed vs/pe link training sequence for 8b/10b encoding
-Restrict fixed vs aux timeout workaround to Yellow Carp family
Reviewed-by: Wenjing Liu <Wenjing.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/include')
| -rw-r--r-- | drivers/gpu/drm/amd/display/include/link_service_types.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/include/link_service_types.h b/drivers/gpu/drm/amd/display/include/link_service_types.h index d76ab72baf0c..d1e91d31d151 100644 --- a/drivers/gpu/drm/amd/display/include/link_service_types.h +++ b/drivers/gpu/drm/amd/display/include/link_service_types.h @@ -83,6 +83,7 @@ enum link_training_result { }; enum lttpr_mode { + LTTPR_MODE_UNKNOWN, LTTPR_MODE_NON_LTTPR, LTTPR_MODE_TRANSPARENT, LTTPR_MODE_NON_TRANSPARENT, |