diff options
| author | Jimmy Kizito <Jimmy.Kizito@amd.com> | 2021-04-21 10:34:34 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-10-06 15:52:03 -0400 |
| commit | 80789bcffec34b5c6b65f33e3c46bf859dc25888 (patch) | |
| tree | 4b9b64c15a6bfd2d418bd0964a65ecb66be536d7 /drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | |
| parent | 847a9038c2d025b32cd7ddcc2ccfa0e82a8ded53 (diff) | |
drm/amd/display: Implement end of training for hop in DPIA display path
[Why & How]
Clear training pattern sequence for hop in display path once clock
recovery and equalization phases of DP tunnel link training completed.
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Wayne Lin <Wayne.Lin@amd.com>
Acked-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index 9b8fbf203a62..56aaab22fa42 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -2389,14 +2389,21 @@ bool perform_link_training_with_retries( dc_link_dp_perform_link_training_skip_aux(link, ¤t_setting); return true; } else { - if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) + /** @todo Consolidate USB4 DP and DPx.x training. */ + if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) { status = dc_link_dpia_perform_link_training(link, ¤t_setting, skip_video_pattern); - else + + /* Transmit idle pattern once training successful. */ + if (status == LINK_TRAINING_SUCCESS) + dp_set_hw_test_pattern(link, DP_TEST_PATTERN_VIDEO_MODE, + NULL, 0); + } else { status = dc_link_dp_perform_link_training(link, ¤t_setting, skip_video_pattern); + } if (status == LINK_TRAINING_SUCCESS) return true; |