Commit aee89b7d authored by Srinivasan Shanmugam's avatar Srinivasan Shanmugam Committed by Alex Deucher
Browse files

drm/amd/display : Log DP link training downspread info 



Update the existing log with DP LT downspread info:

[Downstream devices shall support down spreading of the link clock.
The down-spread amplitude shall either be disabled (0.0%) or up to 0.5%,
as written by the upstream device to the DOWNSPREAD_CTRL register
(DPCD 00107h). The modulation frequency range shall be 30 to 33 kHz]

Besides, fix checkpatch warning:

CHECK: Alignment should match open parenthesis

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarSrinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: default avatarAurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent fdf8ea81

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

+8 −6
Original line number Diff line number Diff line
@@ -1560,9 +1560,10 @@ bool perform_link_training_with_retries( 
	j = 0;

	while (j < attempts && fail_count < (attempts * 10)) {



		DC_LOG_HW_LINK_TRAINING("%s: Beginning link(%d) training attempt %u of %d @ rate(%d) x lane(%d)\n",

			__func__, link->link_index, (unsigned int)j + 1, attempts, cur_link_settings.link_rate,

			cur_link_settings.lane_count);

		DC_LOG_HW_LINK_TRAINING("%s: Beginning link(%d) training attempt %u of %d @ rate(%d) x lane(%d) @ spread = %x\n",

					__func__, link->link_index, (unsigned int)j + 1, attempts,

				       cur_link_settings.link_rate, cur_link_settings.lane_count,

				       cur_link_settings.link_spread);



		dp_enable_link_phy(

			link,
@@ -1640,9 +1641,10 @@ bool perform_link_training_with_retries( 
				break;

		}



		DC_LOG_WARNING("%s: Link(%d) training attempt %u of %d failed @ rate(%d) x lane(%d) : fail reason:(%d)\n",

			__func__, link->link_index, (unsigned int)j + 1, attempts, cur_link_settings.link_rate,

			cur_link_settings.lane_count, status);

		DC_LOG_WARNING("%s: Link(%d) training attempt %u of %d failed @ rate(%d) x lane(%d) @ spread = %x : fail reason:(%d)\n",

			       __func__, link->link_index, (unsigned int)j + 1, attempts,

			      cur_link_settings.link_rate, cur_link_settings.lane_count,

			      cur_link_settings.link_spread, status);



		dp_disable_link_phy(link, &pipe_ctx->link_res, signal);