1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index 369f8b6b804f..983553cf8b74 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -33,6 +33,7 @@
 static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
                                         struct intel_crtc_state *pipe_config)
 {
+        struct drm_device *dev = encoder->base.dev;
         struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
         struct intel_digital_port *intel_dig_port = intel_mst->primary;
         struct intel_dp *intel_dp = &intel_dig_port->dp;
@@ -97,6 +98,10 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
                                &pipe_config->dp_m_n);
 
         pipe_config->dp_m_n.tu = slots;
+
+        if (IS_HASWELL(dev) || IS_BROADWELL(dev))
+                hsw_dp_set_ddi_pll_sel(pipe_config);
+
         return true;
 
 }