diff options
| author | Martin Tsai <martin.tsai@amd.com> | 2020-07-15 11:21:43 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-07-27 16:23:39 -0400 |
| commit | b246f90a09706ecf755c40006fc8b4c07cdfc314 (patch) | |
| tree | d5f7823cf0c645b76dbe1df26d1ad66e37a105e4 /drivers/gpu/drm/amd/display/include | |
| parent | be6ccdf861de048833b2000d80db800ab4f8d81b (diff) | |
drm/amd/display: Check lane status again after link training done
[Why]
Some monitors could suffer symbol unlock but cannot send HPD IRQ to
notic source device to handle link loss. This makes monitor stuck in
abnormal status and causes black screen.
[How]
According to the suggestion from scalar vendor, to check lane status
again after link training done. That can improve the comaptibility
from current production monitors.
Signed-off-by: Martin Tsai <martin.tsai@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Eryk Brol <eryk.brol@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 | 2 |
1 files changed, 2 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 4869d4562e4d..550f46e9b95f 100644 --- a/drivers/gpu/drm/amd/display/include/link_service_types.h +++ b/drivers/gpu/drm/amd/display/include/link_service_types.h @@ -66,6 +66,8 @@ enum link_training_result { /* other failure during EQ step */ LINK_TRAINING_EQ_FAIL_EQ, LINK_TRAINING_LQA_FAIL, + /* one of the CR,EQ or symbol lock is dropped */ + LINK_TRAINING_LINK_LOSS, }; struct link_training_settings { |