[PATCH 01/22] drm/amd/display: Link training TPS1 workaround add back in dpcd
Rodrigo Siqueira
Rodrigo.Siqueira at amd.com
Mon Mar 2 16:47:15 UTC 2020
From: Martin Leung <martin.leung at amd.com>
[Why]
Previously implemented early_cr_pattern we mistook dp_hw_link_settings
for a redundant call of dpcd_set_link_settings
[How]
revert the changes to dpcd_set_link_settings calls for this workaround.
Do not need to revert the entire change since it only affects patched
case
Signed-off-by: Martin Leung <martin.leung at amd.com>
Reviewed-by: David Galiffi <David.Galiffi at amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 93127bc90f3c..5aa3de9644ea 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -1446,11 +1446,11 @@ enum link_training_result dc_link_dp_perform_link_training(
&link->preferred_training_settings,
<_settings);
- /* 1. set link rate, lane count and spread. */
if (link->ctx->dc->work_arounds.lt_early_cr_pattern)
start_clock_recovery_pattern_early(link, <_settings, DPRX);
- else
- dpcd_set_link_settings(link, <_settings);
+
+ /* 1. set link rate, lane count and spread. */
+ dpcd_set_link_settings(link, <_settings);
if (link->preferred_training_settings.fec_enable != NULL)
fec_enable = *link->preferred_training_settings.fec_enable;
@@ -1669,11 +1669,11 @@ enum link_training_result dc_link_dp_sync_lt_attempt(
dp_set_panel_mode(link, panel_mode);
/* Attempt to train with given link training settings */
- /* Set link rate, lane count and spread. */
if (link->ctx->dc->work_arounds.lt_early_cr_pattern)
start_clock_recovery_pattern_early(link, <_settings, DPRX);
- else
- dpcd_set_link_settings(link, <_settings);
+
+ /* Set link rate, lane count and spread. */
+ dpcd_set_link_settings(link, <_settings);
/* 2. perform link training (set link training done
* to false is done as well)
--
2.25.1
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