]> Gentwo Git Trees - linux/.git/commit
drm/amd/display: Increase AUX Intra-Hop Done Max Wait Duration
authorMichael Strauss <michael.strauss@amd.com>
Wed, 19 Mar 2025 22:04:01 +0000 (18:04 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Mon, 28 Jul 2025 20:40:31 +0000 (16:40 -0400)
commite3419e1e44b87d4176fb98679a77301b1ca40f63
tree29db2a9c4d2aca6c13542ab28475f33b7b4a8853
parent9a885f1193efa4802504624b2df3aa5eaaa44a56
drm/amd/display: Increase AUX Intra-Hop Done Max Wait Duration

[WHY]
In the worst case, AUX intra-hop done can take hundreds of milliseconds as
each retimer in a link might have to wait a full AUX_RD_INTERVAL to send
LT abort downstream.

[HOW]
Wait 300ms for each retimer in a link to allow time to propagate a LT abort
without infinitely waiting on intra-hop done.
For no-retimer case, keep the max duration at 10ms.

Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c