diff options
| author | Peichen Huang <PeiChen.Huang@amd.com> | 2025-02-25 14:52:30 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-03-10 13:28:27 -0400 |
| commit | 8a21da2842bb22b2b80e5902d0438030d729bfd3 (patch) | |
| tree | 8c547ed31967c0e4c373d4fc0cc92bfd8537f364 | |
| parent | bd00b29b5f236dce677089319176dee5872b5a7a (diff) | |
drm/amd/display: not abort link train when bw is low
[WHY]
DP tunneling should not abort link train even bandwidth become
too low after downgrade. Otherwise, it would fail compliance test.
[HOW}
Do link train with downgrade settings even bandwidth is not enough
Reviewed-by: Cruise Hung <cruise.hung@amd.com>
Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Signed-off-by: Peichen Huang <PeiChen.Huang@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c | 5 |
1 files changed, 1 insertions, 4 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 613298d21d03..ef358afdfb65 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 @@ -1789,13 +1789,10 @@ bool perform_link_training_with_retries( is_link_bw_min = ((cur_link_settings.link_rate <= LINK_RATE_LOW) && (cur_link_settings.lane_count <= LANE_COUNT_ONE)); - if (is_link_bw_low) { + if (is_link_bw_low) DC_LOG_WARNING( "%s: Link(%d) bandwidth too low after fallback req_bw(%d) > link_bw(%d)\n", __func__, link->link_index, req_bw, link_bw); - - return false; - } } msleep(delay_between_attempts); |