1 files changed, 35 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2506-drm-amd-display-Disable-display-writeback-on-Linux-f.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2506-drm-amd-display-Disable-display-writeback-on-Linux-f.patch
new file mode 100644
index 00000000..ab1468a6
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2506-drm-amd-display-Disable-display-writeback-on-Linux-f.patch
@@ -0,0 +1,35 @@
+From 408adc22d1ae6f3f24f3c28512d97be07e7c5802 Mon Sep 17 00:00:00 2001
+From: hersen wu <hersenxs.wu@amd.com>
+Date: Wed, 10 Apr 2019 16:19:09 -0400
+Subject: [PATCH 2506/2940] drm/amd/display: Disable display writeback on Linux
+ for NV10
+
+[WHY] system crash when initialize dwb
+current linux driver does not support dwb.
+ disable this feature for now.
+
+[HOW] set num_dwb = 0 to disable dwb for now
+
+Signed-off-by: hersen wu <hersenxs.wu@amd.com>
+Reviewed-by: Leo Li <sunpeng.li@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+index b23333b74f5d..d2642cc52c85 100644
+--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
++++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+@@ -623,7 +623,7 @@ static const struct resource_caps res_cap_nv10 = {
+ 		.num_audio = 7,
+ 		.num_stream_encoder = 6,
+ 		.num_pll = 6,
+-		.num_dwb = 1,
++		.num_dwb = 0,
+ 		.num_ddc = 6,
+ 		.num_vmid = 16,
+ #ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
+-- 
+2.17.1
+