diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 296cfc201a81ea9a0017abfb0e97eee7eaf8dc18..c574ff0189dec310f42026ee76dd6f62fc2733e3 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1973,6 +1973,8 @@ intel_dp_probe_oui(struct intel_dp *intel_dp)
 	if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT))
 		return;
 
+	ironlake_edp_panel_vdd_on(intel_dp);
+
 	if (intel_dp_aux_native_read_retry(intel_dp, DP_SINK_OUI, buf, 3))
 		DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n",
 			      buf[0], buf[1], buf[2]);
@@ -1980,6 +1982,8 @@ intel_dp_probe_oui(struct intel_dp *intel_dp)
 	if (intel_dp_aux_native_read_retry(intel_dp, DP_BRANCH_OUI, buf, 3))
 		DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n",
 			      buf[0], buf[1], buf[2]);
+
+	ironlake_edp_panel_vdd_off(intel_dp, false);
 }
 
 static bool