diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 76e98e8ed315..648f91b58d1e 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -498,10 +498,8 @@ static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv,
 				   struct device_node *dn)
 {
 	struct device_node *port;
-	const char *phy_mode_str;
 	int mode;
 	unsigned int port_num;
-	int ret;
 
 	priv->moca_port = -1;
 
@@ -515,15 +513,11 @@ static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv,
 		 * time
 		 */
 		mode = of_get_phy_mode(port);
-		if (mode < 0) {
-			ret = of_property_read_string(port, "phy-mode",
-						      &phy_mode_str);
-			if (ret < 0)
-				continue;
+		if (mode < 0)
+			continue;
 
-			if (!strcasecmp(phy_mode_str, "internal"))
-				priv->int_phy_mask |= 1 << port_num;
-		}
+		if (mode == PHY_INTERFACE_MODE_INTERNAL)
+			priv->int_phy_mask |= 1 << port_num;
 
 		if (mode == PHY_INTERFACE_MODE_MOCA)
 			priv->moca_port = port_num;