1 files changed, 45 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3424-drm-amd-display-reprogram-VM-config-when-system-resu.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3424-drm-amd-display-reprogram-VM-config-when-system-resu.patch
new file mode 100644
index 00000000..0ebdaaff
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3424-drm-amd-display-reprogram-VM-config-when-system-resu.patch
@@ -0,0 +1,45 @@
+From 43316ae2274d58cda5a87bb7daa68e887d6156be Mon Sep 17 00:00:00 2001
+From: Lewis Huang <Lewis.Huang@amd.com>
+Date: Mon, 22 Jul 2019 15:23:32 -0400
+Subject: [PATCH 3424/4256] drm/amd/display: reprogram VM config when system
+ resume
+
+[Why]
+The vm config will be clear to 0 when system enter S4. It will
+cause hubbub didn't know how to fetch data when system resume.
+The flip always pending because earliest_inuse_address and
+request_address are different.
+
+[How]
+Reprogram VM config when system resume
+
+Signed-off-by: Lewis Huang <Lewis.Huang@amd.com>
+Reviewed-by: Jun Lei <Jun.Lei@amd.com>
+Acked-by: Eric Yang <eric.yang2@amd.com>
+Acked-by: Leo Li <sunpeng.li@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/core/dc.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
+index 3e79bdbc68e9..90c860d8e449 100644
+--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
++++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
+@@ -2273,6 +2273,14 @@ void dc_set_power_state(
+ 		dc_resource_state_construct(dc, dc->current_state);
+ 
+ 		dc->hwss.init_hw(dc);
++
++#ifdef CONFIG_DRM_AMD_DC_DCN2_0
++		if (dc->hwss.init_sys_ctx != NULL &&
++			dc->vm_pa_config.valid) {
++			dc->hwss.init_sys_ctx(dc->hwseq, dc, &dc->vm_pa_config);
++		}
++#endif
++
+ 		break;
+ 	default:
+ 		ASSERT(dc->current_state->stream_count == 0);
+-- 
+2.17.1
+