diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 221c1ec..9742573 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -3841,6 +3841,9 @@ bool intel_dp_is_edp(struct drm_device *dev, enum port port)
 	for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
 		p_child = dev_priv->vbt.child_dev + i;
 
+		DRM_ERROR("found device type 0x%08x on port %d\n",
+			  p_child->common.device_type,
+			  p_child->common.dvo_port);
 		if (p_child->common.dvo_port == port_mapping[port] &&
 		    (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) ==
 		    (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS))