diff options
| author | Wenjing Liu <Wenjing.Liu@amd.com> | 2018-02-16 14:04:16 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-03-05 15:34:03 -0500 |
| commit | 94405cf63884e364ec560d99af47084cb1b47b5f (patch) | |
| tree | 1b3390e0feed35de2db81ef00f586f54336e81f5 /drivers/gpu/drm/amd/display/include | |
| parent | 85075fa04287dce81397dab75af0992274727b82 (diff) | |
drm/amd/display: Update Link Training Fallback logic
[Description]
When CR fails to minimum link rate,
we should reduce lane count to the number lowest cr_done lanes.
[Code Review]
Jun Lei
Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@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 | 5 |
1 files changed, 4 insertions, 1 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 adea1a59f620..80f0d93cfd94 100644 --- a/drivers/gpu/drm/amd/display/include/link_service_types.h +++ b/drivers/gpu/drm/amd/display/include/link_service_types.h @@ -58,11 +58,14 @@ enum { enum link_training_result { LINK_TRAINING_SUCCESS, - LINK_TRAINING_CR_FAIL, + LINK_TRAINING_CR_FAIL_LANE0, + LINK_TRAINING_CR_FAIL_LANE1, + LINK_TRAINING_CR_FAIL_LANE23, /* CR DONE bit is cleared during EQ step */ LINK_TRAINING_EQ_FAIL_CR, /* other failure during EQ step */ LINK_TRAINING_EQ_FAIL_EQ, + LINK_TRAINING_LQA_FAIL, }; struct link_training_settings { |