1 files changed, 38 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/0968-drm-amd-display-Optimize-passive-update-planes.patch b/meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/0968-drm-amd-display-Optimize-passive-update-planes.patch
new file mode 100644
index 00000000..6e2fac08
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/0968-drm-amd-display-Optimize-passive-update-planes.patch
@@ -0,0 +1,38 @@
+From 2c46afcdfb48d4e6afe19d77575eab9953b4c120 Mon Sep 17 00:00:00 2001
+From: Yongqiang Sun <yongqiang.sun@amd.com>
+Date: Fri, 7 Dec 2018 10:38:05 -0500
+Subject: [PATCH 0968/2940] drm/amd/display: Optimize passive update planes.
+
+[Why]
+passive update planes still spends a litte more
+time on some cases.
+
+[How]
+Remove unnecessary trace which involving in some register read.
+Disable debug output for release build.
+
+Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
+Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
+Acked-by: Leo Li <sunpeng.li@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/core/dc.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
+index 1484d33111d4..19c03ac2ff56 100644
+--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
++++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
+@@ -1570,9 +1570,6 @@ static void commit_planes_for_stream(struct dc *dc,
+ 		}
+ 	}
+ 
+-	if (update_type == UPDATE_TYPE_FULL)
+-		context_timing_trace(dc, &context->res_ctx);
+-
+ 	// Update Type FAST, Surface updates
+ 	if (update_type == UPDATE_TYPE_FAST) {
+ 		/* Lock the top pipe while updating plane addrs, since freesync requires
+-- 
+2.17.1
+