Commit 6c5bb048 authored by Fangzhi Zuo's avatar Fangzhi Zuo Committed by Alex Deucher
Browse files

drm/amd/display: Add a Precise Delay Routine 



Fix DP compliance failures 4.2.2.12, 4.3.1.21, 4.9.1.19
caused by imprecise delay on fsleep().

Reviewed-by: default avatarAric Cyr <aric.cyr@amd.com>
Signed-off-by: default avatarFangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: default avatarWayne Lin <wayne.lin@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 02706006

drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c

+1 −1
Original line number Diff line number Diff line
@@ -272,7 +272,7 @@ void dp_wait_for_training_aux_rd_interval( 
	struct dc_link *link,

	uint32_t wait_in_micro_secs)

{

	fsleep(wait_in_micro_secs);

	usleep_range_state(wait_in_micro_secs, wait_in_micro_secs, TASK_UNINTERRUPTIBLE);



	DC_LOG_HW_LINK_TRAINING("%s:\n wait = %d\n",

		__func__,