From: Evan Quan <evan.quan@amd.com>
Date: Fri, 20 Jul 2018 10:13:19 +0800
Subject: drm/amd/powerplay: slow UCLK switch when multiple displays not in sync
Git-commit: 59a8348fc5b363a0c19be73bc9f5790e0f8f803a
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Slow switch for UCLK when there is multiple displays and they are
not in sync.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Rex Zhu <rex.zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
@@ -3800,7 +3800,8 @@ static int vega10_notify_smc_display_con
 	uint32_t i;
 	struct pp_display_clock_request clock_req;
 
-	if (hwmgr->display_config->num_display > 1)
+	if ((hwmgr->display_config->num_display > 1) &&
+	     !hwmgr->display_config->multi_monitor_in_sync)
 		vega10_notify_smc_display_change(hwmgr, false);
 	else
 		vega10_notify_smc_display_change(hwmgr, true);