diff --git a/include/linux/phy/phy-dp.h b/include/linux/phy/phy-dp.h
index 18cad23642cd..9cce5766bc0b 100644
--- a/include/linux/phy/phy-dp.h
+++ b/include/linux/phy/phy-dp.h
@@ -8,6 +8,9 @@
 
 #include <linux/types.h>
 
+#define PHY_SUBMODE_DP	0
+#define PHY_SUBMODE_EDP	1
+
 /**
  * struct phy_configure_opts_dp - DisplayPort PHY configuration set
  *