diff options
| author | Zhikai Zhai <[email protected]> | 2024-01-29 17:02:18 +0800 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2024-02-14 17:08:51 -0500 |
| commit | 1b5078f01b953a43d6198180ca5b110017315672 (patch) | |
| tree | 92fde81b736981add366701323fa189783534d6c | |
| parent | ce311df91d73eaddc5489d4d63fb96c21e80f7cf (diff) | |
drm/amd/display: Add align done check
[WHY]
We Double-check link status if training successful,
but miss the lane align status.
[HOW]
Add the lane align status check
Cc: Mario Limonciello <[email protected]>
Cc: Alex Deucher <[email protected]>
Cc: [email protected]
Reviewed-by: Wenjing Liu <[email protected]>
Acked-by: Aurabindo Pillai <[email protected]>
Signed-off-by: Zhikai Zhai <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c index e06d3c2d8910..e538c67d3ed9 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c @@ -517,6 +517,7 @@ enum link_training_result dp_check_link_loss_status( { enum link_training_result status = LINK_TRAINING_SUCCESS; union lane_status lane_status; + union lane_align_status_updated dpcd_lane_status_updated; uint8_t dpcd_buf[6] = {0}; uint32_t lane; @@ -532,10 +533,12 @@ enum link_training_result dp_check_link_loss_status( * check lanes status */ lane_status.raw = dp_get_nibble_at_index(&dpcd_buf[2], lane); + dpcd_lane_status_updated.raw = dpcd_buf[4]; if (!lane_status.bits.CHANNEL_EQ_DONE_0 || !lane_status.bits.CR_DONE_0 || - !lane_status.bits.SYMBOL_LOCKED_0) { + !lane_status.bits.SYMBOL_LOCKED_0 || + !dp_is_interlane_aligned(dpcd_lane_status_updated)) { /* if one of the channel equalization, clock * recovery or symbol lock is dropped * consider it as (link has been |