1 files changed, 35 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0306-drm-amd-display-increase-timeout-for-dmif-dealloc.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0306-drm-amd-display-increase-timeout-for-dmif-dealloc.patch
new file mode 100644
index 00000000..d8762d85
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0306-drm-amd-display-increase-timeout-for-dmif-dealloc.patch
@@ -0,0 +1,35 @@
+From 67191984f4a466bd7d48410762e79aebbfc0d226 Mon Sep 17 00:00:00 2001
+From: Roman Li <Roman.Li@amd.com>
+Date: Fri, 24 Mar 2017 16:26:09 -0400
+Subject: [PATCH 0306/4131] drm/amd/display: increase timeout for dmif dealloc
+
+In some use-cases, e.g. multiple 4K displays,
+exisitng wait time for reg update of 30msec timed out
+during mode setiing that sometimes resulted in system bad state
+as we continue without waiting for registry update complete.
+Increasing timeout to 35msec fixes that problem.
+
+Signed-off-by: Roman Li <Roman.Li@amd.com>
+Acked-by: Harry Wentland <Harry.Wentland@amd.com>
+Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/dce/dce_mem_input.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_mem_input.c b/drivers/gpu/drm/amd/display/dc/dce/dce_mem_input.c
+index 7acd871..884f453 100644
+--- a/drivers/gpu/drm/amd/display/dc/dce/dce_mem_input.c
++++ b/drivers/gpu/drm/amd/display/dc/dce/dce_mem_input.c
+@@ -524,7 +524,7 @@ void dce_mem_input_free_dmif(struct mem_input *mi,
+ 
+ 	REG_WAIT(DMIF_BUFFER_CONTROL,
+ 			DMIF_BUFFERS_ALLOCATION_COMPLETED, 1,
+-			10, 0xBB8);
++			10, 3500);
+ 
+ 	if (mi->wa.single_head_rdreq_dmif_limit) {
+ 		uint32_t eanble =  (total_stream_num > 1) ? 0 :
+-- 
+2.7.4
+