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

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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: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Srinivasan Shanmugam 2023-04-09 22:35:38 +05:30 committed by Alex Deucher
parent fdf8ea814a
commit aee89b7d09
1 changed files with 8 additions and 6 deletions
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14
drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c
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@ -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);