drm/amd/display: support access ddc for mst branch

[linux-2.6-microblaze.git] / drivers / gpu / drm / amd / display / dc / core / dc_link.c

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index fa56c0f..a4180ba 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -498,6 +498,10 @@ static bool detect_dp(
                        sink_caps->signal = SIGNAL_TYPE_DISPLAY_PORT_MST;
                        link->type = dc_connection_mst_branch;
 
+                       dal_ddc_service_set_transaction_type(
+                                                       link->ddc,
+                                                       sink_caps->transaction_type);
+
                        /*
                         * This call will initiate MST topology discovery. Which
                         * will detect MST ports and add new DRM connector DRM