From: George Shen <George.Shen@amd.com>
Date: Sat, 20 Nov 2021 01:03:20 +0000 (-0500)
Subject: drm/amd/display: Apply LTTPR workarounds to non-transparent mode
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d682619557120a5f2d460b822f5ff922435a5261;p=linux.git

drm/amd/display: Apply LTTPR workarounds to non-transparent mode

[Why]
Some of the vendor-specific workarounds added for transparent mode
also need to be applied to non-transparent mode in order to succeed
link training consistently.

[How]
Remove transparent mode check for the required workarounds.

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Pavle Kotarac <Pavle.Kotarac@amd.com>
Signed-off-by: George Shen <George.Shen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

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 62510b6438827..574a668333873 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
@@ -620,10 +620,12 @@ enum dc_status dpcd_set_link_settings(
 #endif
 		if (link->dc->debug.apply_vendor_specific_lttpr_wa &&
 					(link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) &&
-					link->lttpr_mode == LTTPR_MODE_TRANSPARENT) {
+					link->lttpr_mode == LTTPR_MODE_TRANSPARENT)
 			vendor_specific_lttpr_wa_one_start(link);
+
+		if (link->dc->debug.apply_vendor_specific_lttpr_wa &&
+					(link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN))
 			vendor_specific_lttpr_wa_one_two(link, rate);
-		}
 
 		status = core_link_write_dpcd(link, DP_LINK_BW_SET, &rate, 1);
 	}
@@ -1494,8 +1496,7 @@ static enum link_training_result perform_clock_recovery_sequence(
 			wait_time_microsec = TRAINING_AUX_RD_INTERVAL;
 
 		if (link->dc->debug.apply_vendor_specific_lttpr_wa &&
-				(link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN) &&
-				link->lttpr_mode == LTTPR_MODE_TRANSPARENT) {
+				(link->chip_caps & EXT_DISPLAY_PATH_CAPS__DP_FIXED_VS_EN)) {
 			wait_time_microsec = 16000;
 		}