From: Peichen Huang <PeiChen.Huang@xxxxxxx>
[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@xxxxxxx>
Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@xxxxxxx>
Signed-off-by: Peichen Huang <PeiChen.Huang@xxxxxxx>
Signed-off-by: Tom Chung <chiahsuan.chung@xxxxxxx>
---
.../gpu/drm/amd/display/dc/link/protocols/link_dp_training.c | 5 +----
1 file changed, 1 insertion(+), 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);
--
2.34.1
