[PATCH 34/51] drm/amd/display: check for repeater when setting aux_rd_interval.

sunpeng.li at amd.com sunpeng.li at amd.com
Mon Dec 2 17:33:48 UTC 2019

From: abdoulaye berthe <abdoulaye.berthe at amd.com>

When training with repeater the aux read interval must be set to
repeater specific aux_red_interval. This value is always 100us for CR.

Check for repeater when setting the aux_rd_interval in channel
Use the right offset in the aux_rd_interval array

Signed-off-by: abdoulaye berthe <abdoulaye.berthe at amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu at amd.com>
Acked-by: George Shen <George.Shen at amd.com>
Acked-by: Leo Li <sunpeng.li at amd.com>
 drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 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 015fa0c52746..dfcd6421ee01 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
@@ -906,10 +906,10 @@ static enum link_training_result perform_channel_equalization_sequence(
 		/* 3. wait for receiver to lock-on*/
 		wait_time_microsec = lt_settings->eq_pattern_time;
-		if (!link->is_lttpr_mode_transparent)
+		if (is_repeater(link, offset))
 			wait_time_microsec =
-						link->dpcd_caps.lttpr_caps.aux_rd_interval[offset]);
+						link->dpcd_caps.lttpr_caps.aux_rd_interval[offset - 1]);

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