diff --git a/target/linux/ramips/dts/mt7620a_alfa-network_ac1200rm.dts b/target/linux/ramips/dts/mt7620a_alfa-network_ac1200rm.dts
index 27b6896cec..752a940cd8 100644
--- a/target/linux/ramips/dts/mt7620a_alfa-network_ac1200rm.dts
+++ b/target/linux/ramips/dts/mt7620a_alfa-network_ac1200rm.dts
@@ -72,10 +72,6 @@
 	status = "okay";
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &ohci {
 	status = "okay";
 };
diff --git a/target/linux/ramips/dts/mt7620a_alfa-network_r36m-e4g.dts b/target/linux/ramips/dts/mt7620a_alfa-network_r36m-e4g.dts
index 58386a9ac7..0991ae8447 100644
--- a/target/linux/ramips/dts/mt7620a_alfa-network_r36m-e4g.dts
+++ b/target/linux/ramips/dts/mt7620a_alfa-network_r36m-e4g.dts
@@ -141,10 +141,6 @@
 	status = "okay";
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &i2c {
 	status = "okay";
 };
diff --git a/target/linux/ramips/dts/mt7620a_alfa-network_tube-e4g.dts b/target/linux/ramips/dts/mt7620a_alfa-network_tube-e4g.dts
index 30a0201c39..ca58d780f4 100644
--- a/target/linux/ramips/dts/mt7620a_alfa-network_tube-e4g.dts
+++ b/target/linux/ramips/dts/mt7620a_alfa-network_tube-e4g.dts
@@ -114,10 +114,6 @@
 	status = "okay";
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &ohci {
 	status = "okay";
 };
diff --git a/target/linux/ramips/dts/mt7620a_asus_rp-n53.dts b/target/linux/ramips/dts/mt7620a_asus_rp-n53.dts
index 3cb9142c38..4c72c64272 100644
--- a/target/linux/ramips/dts/mt7620a_asus_rp-n53.dts
+++ b/target/linux/ramips/dts/mt7620a_asus_rp-n53.dts
@@ -153,8 +153,7 @@
 	};
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
+&ethernet {
 	pinctrl-names = "default";
 	pinctrl-0 = <&ephy_pins>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_buffalo_whr-1166d.dts b/target/linux/ramips/dts/mt7620a_buffalo_whr-1166d.dts
index 196bbde726..93a09f99c3 100644
--- a/target/linux/ramips/dts/mt7620a_buffalo_whr-1166d.dts
+++ b/target/linux/ramips/dts/mt7620a_buffalo_whr-1166d.dts
@@ -157,10 +157,6 @@
 	};
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_buffalo_whr-300hp2.dts b/target/linux/ramips/dts/mt7620a_buffalo_whr-300hp2.dts
index ed2e03d6cf..95152bc41a 100644
--- a/target/linux/ramips/dts/mt7620a_buffalo_whr-300hp2.dts
+++ b/target/linux/ramips/dts/mt7620a_buffalo_whr-300hp2.dts
@@ -144,10 +144,6 @@
 	mediatek,portmap = "llllw";
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 	pinctrl-names = "default";
diff --git a/target/linux/ramips/dts/mt7620a_buffalo_whr-600d.dts b/target/linux/ramips/dts/mt7620a_buffalo_whr-600d.dts
index b799a98e56..226967763b 100644
--- a/target/linux/ramips/dts/mt7620a_buffalo_whr-600d.dts
+++ b/target/linux/ramips/dts/mt7620a_buffalo_whr-600d.dts
@@ -144,10 +144,6 @@
 	mediatek,portmap = "llllw";
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_cameo_810.dtsi b/target/linux/ramips/dts/mt7620a_cameo_810.dtsi
index c3f3267d38..70407449db 100644
--- a/target/linux/ramips/dts/mt7620a_cameo_810.dtsi
+++ b/target/linux/ramips/dts/mt7620a_cameo_810.dtsi
@@ -132,10 +132,6 @@
 	mediatek,portmap = "llllw";
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &gpio2 {
 	status = "okay";
 };
diff --git a/target/linux/ramips/dts/mt7620a_dlink_dch-m225.dts b/target/linux/ramips/dts/mt7620a_dlink_dch-m225.dts
index 63667da281..0c9f56875e 100644
--- a/target/linux/ramips/dts/mt7620a_dlink_dch-m225.dts
+++ b/target/linux/ramips/dts/mt7620a_dlink_dch-m225.dts
@@ -171,10 +171,6 @@
 	mtd-mac-address = <&factory 0x4>;
 };
 
-&gsw {
-	ralink,port4 = "ephy";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 	pinctrl-names = "default";
diff --git a/target/linux/ramips/dts/mt7620a_dlink_dir-510l.dts b/target/linux/ramips/dts/mt7620a_dlink_dir-510l.dts
index f4db67648a..774d90c79d 100644
--- a/target/linux/ramips/dts/mt7620a_dlink_dir-510l.dts
+++ b/target/linux/ramips/dts/mt7620a_dlink_dir-510l.dts
@@ -120,10 +120,6 @@
 	};
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &state_default {
 	default {
 		groups = "i2c", "uartf";
diff --git a/target/linux/ramips/dts/mt7620a_dlink_dwr-118-a1.dts b/target/linux/ramips/dts/mt7620a_dlink_dwr-118-a1.dts
index bacebee8e1..71b532fc34 100644
--- a/target/linux/ramips/dts/mt7620a_dlink_dwr-118-a1.dts
+++ b/target/linux/ramips/dts/mt7620a_dlink_dwr-118-a1.dts
@@ -185,5 +185,5 @@
 };
 
 &gsw {
-	mediatek,port4 = "gmac";
+	mediatek,port4-gmac;
 };
diff --git a/target/linux/ramips/dts/mt7620a_dlink_dwr-118-a2.dts b/target/linux/ramips/dts/mt7620a_dlink_dwr-118-a2.dts
index 0b124e67de..9ea28706aa 100644
--- a/target/linux/ramips/dts/mt7620a_dlink_dwr-118-a2.dts
+++ b/target/linux/ramips/dts/mt7620a_dlink_dwr-118-a2.dts
@@ -173,6 +173,6 @@
 };
 
 &gsw {
-	mediatek,port4 = "gmac";
+	mediatek,port4-gmac;
 	mediatek,ephy-base-address = /bits/ 16 < 2 >;
 };
diff --git a/target/linux/ramips/dts/mt7620a_dovado_tiny-ac.dts b/target/linux/ramips/dts/mt7620a_dovado_tiny-ac.dts
index 9450596f1b..068f75bd96 100644
--- a/target/linux/ramips/dts/mt7620a_dovado_tiny-ac.dts
+++ b/target/linux/ramips/dts/mt7620a_dovado_tiny-ac.dts
@@ -135,7 +135,7 @@
 };
 
 &gsw {
-	mediatek,port4 = "gmac";
+	mediatek,port4-gmac;
 };
 
 &pcie {
diff --git a/target/linux/ramips/dts/mt7620a_edimax_br-6478ac-v2.dts b/target/linux/ramips/dts/mt7620a_edimax_br-6478ac-v2.dts
index e7af34aa8e..2337c0f9d3 100644
--- a/target/linux/ramips/dts/mt7620a_edimax_br-6478ac-v2.dts
+++ b/target/linux/ramips/dts/mt7620a_edimax_br-6478ac-v2.dts
@@ -177,10 +177,6 @@
 	};
 };
 
-&gsw {
-	mediatek,port4 = "gmac";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_edimax_ew-7478apc.dts b/target/linux/ramips/dts/mt7620a_edimax_ew-7478apc.dts
index 77d214e888..09763db388 100644
--- a/target/linux/ramips/dts/mt7620a_edimax_ew-7478apc.dts
+++ b/target/linux/ramips/dts/mt7620a_edimax_ew-7478apc.dts
@@ -169,10 +169,6 @@
 	};
 };
 
-&gsw {
-	mediatek,port4 = "gmac";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_edimax_ew-747x.dtsi b/target/linux/ramips/dts/mt7620a_edimax_ew-747x.dtsi
index d17cc090c2..07b03f5c06 100644
--- a/target/linux/ramips/dts/mt7620a_edimax_ew-747x.dtsi
+++ b/target/linux/ramips/dts/mt7620a_edimax_ew-747x.dtsi
@@ -201,10 +201,6 @@
 	};
 };
 
-&gsw {
-	mediatek,port5 = "gmac";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_engenius_esr600.dts b/target/linux/ramips/dts/mt7620a_engenius_esr600.dts
index b8fe2f8cdb..35d0b3dbec 100644
--- a/target/linux/ramips/dts/mt7620a_engenius_esr600.dts
+++ b/target/linux/ramips/dts/mt7620a_engenius_esr600.dts
@@ -155,7 +155,7 @@
 				0x7c 0x0000007e /* PORT0 STATUS */
 				0x0c 0x05600000 /* PORT6 PAD MODE CTRL */
 				0x94 0x0000007e /* PORT6 STATUS */
-				>;
+			>;
 		};
 	};
 };
diff --git a/target/linux/ramips/dts/mt7620a_fon_fon2601.dts b/target/linux/ramips/dts/mt7620a_fon_fon2601.dts
index ee61c6e59e..b47d63be85 100644
--- a/target/linux/ramips/dts/mt7620a_fon_fon2601.dts
+++ b/target/linux/ramips/dts/mt7620a_fon_fon2601.dts
@@ -136,7 +136,7 @@
 };
 
 &gsw {
-	mediatek,port4 = "gmac";
+	mediatek,port4-gmac;
 };
 
 &wmac {
diff --git a/target/linux/ramips/dts/mt7620a_head-weblink_hdrm200.dts b/target/linux/ramips/dts/mt7620a_head-weblink_hdrm200.dts
index a0ebe4fff5..487f6aaf6e 100644
--- a/target/linux/ramips/dts/mt7620a_head-weblink_hdrm200.dts
+++ b/target/linux/ramips/dts/mt7620a_head-weblink_hdrm200.dts
@@ -149,6 +149,10 @@
 	};
 };
 
+&gsw {
+	mediatek,port4-gmac;
+};
+
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_lenovo_newifi-y1s.dts b/target/linux/ramips/dts/mt7620a_lenovo_newifi-y1s.dts
index a07683ed4a..0997d8a00e 100644
--- a/target/linux/ramips/dts/mt7620a_lenovo_newifi-y1s.dts
+++ b/target/linux/ramips/dts/mt7620a_lenovo_newifi-y1s.dts
@@ -111,5 +111,5 @@
 };
 
 &gsw {
-	mediatek,port4 = "gmac";
+	mediatek,port4-gmac;
 };
diff --git a/target/linux/ramips/dts/mt7620a_linksys_e1700.dts b/target/linux/ramips/dts/mt7620a_linksys_e1700.dts
index 2619a4653a..2672d54f36 100644
--- a/target/linux/ramips/dts/mt7620a_linksys_e1700.dts
+++ b/target/linux/ramips/dts/mt7620a_linksys_e1700.dts
@@ -144,10 +144,6 @@
 	};
 };
 
-&gsw {
-	mediatek,port4 = "gmac";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_ohyeah_oy-0001.dts b/target/linux/ramips/dts/mt7620a_ohyeah_oy-0001.dts
index 07f606fce4..7dabbed9ba 100644
--- a/target/linux/ramips/dts/mt7620a_ohyeah_oy-0001.dts
+++ b/target/linux/ramips/dts/mt7620a_ohyeah_oy-0001.dts
@@ -103,10 +103,6 @@
 	mediatek,portmap = "llllw";
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_planex_cs-qr10.dts b/target/linux/ramips/dts/mt7620a_planex_cs-qr10.dts
index aa7ddb0a25..3edc41ac0d 100644
--- a/target/linux/ramips/dts/mt7620a_planex_cs-qr10.dts
+++ b/target/linux/ramips/dts/mt7620a_planex_cs-qr10.dts
@@ -122,10 +122,6 @@
 	mediatek,portmap = "llllw";
 };
 
-&gsw {
-	ralink,port4 = "ephy";
-};
-
 &sdhci {
 	status = "okay";
 };
diff --git a/target/linux/ramips/dts/mt7620a_planex_db-wrt01.dts b/target/linux/ramips/dts/mt7620a_planex_db-wrt01.dts
index eb373e9aa2..8f8f173de3 100644
--- a/target/linux/ramips/dts/mt7620a_planex_db-wrt01.dts
+++ b/target/linux/ramips/dts/mt7620a_planex_db-wrt01.dts
@@ -94,10 +94,6 @@
 	mediatek,portmap = "llllw";
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_planex_mzk-750dhp.dts b/target/linux/ramips/dts/mt7620a_planex_mzk-750dhp.dts
index df9c9689c3..e1c5568ed8 100644
--- a/target/linux/ramips/dts/mt7620a_planex_mzk-750dhp.dts
+++ b/target/linux/ramips/dts/mt7620a_planex_mzk-750dhp.dts
@@ -114,10 +114,6 @@
 	mediatek,portmap = "llllw";
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_ralink_mt7620a-evb.dts b/target/linux/ramips/dts/mt7620a_ralink_mt7620a-evb.dts
index 7743df06fb..4c5baf1e50 100644
--- a/target/linux/ramips/dts/mt7620a_ralink_mt7620a-evb.dts
+++ b/target/linux/ramips/dts/mt7620a_ralink_mt7620a-evb.dts
@@ -105,7 +105,7 @@
 };
 
 &gsw {
-	mediatek,port4 = "gmac";
+	mediatek,port4-gmac;
 };
 
 &sdhci {
diff --git a/target/linux/ramips/dts/mt7620a_ralink_mt7620a-mt7530-evb.dts b/target/linux/ramips/dts/mt7620a_ralink_mt7620a-mt7530-evb.dts
index 4a09755967..b76ab2aa59 100644
--- a/target/linux/ramips/dts/mt7620a_ralink_mt7620a-mt7530-evb.dts
+++ b/target/linux/ramips/dts/mt7620a_ralink_mt7620a-mt7530-evb.dts
@@ -99,10 +99,6 @@
 	};
 };
 
-&gsw {
-	mediatek,port4 = "gmac";
-};
-
 &pcie {
 	status = "okay";
 };
diff --git a/target/linux/ramips/dts/mt7620a_ralink_mt7620a-mt7610e-evb.dts b/target/linux/ramips/dts/mt7620a_ralink_mt7620a-mt7610e-evb.dts
index ae0d364d3e..b7a71c3e25 100644
--- a/target/linux/ramips/dts/mt7620a_ralink_mt7620a-mt7610e-evb.dts
+++ b/target/linux/ramips/dts/mt7620a_ralink_mt7620a-mt7610e-evb.dts
@@ -71,10 +71,6 @@
 	mediatek,portmap = "llllw";
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &sdhci {
 	status = "okay";
 };
diff --git a/target/linux/ramips/dts/mt7620a_ralink_mt7620a-v22sg-evb.dts b/target/linux/ramips/dts/mt7620a_ralink_mt7620a-v22sg-evb.dts
index bee4ba7fd3..6e8eff50bc 100644
--- a/target/linux/ramips/dts/mt7620a_ralink_mt7620a-v22sg-evb.dts
+++ b/target/linux/ramips/dts/mt7620a_ralink_mt7620a-v22sg-evb.dts
@@ -99,7 +99,7 @@
 };
 
 &gsw {
-	mediatek,port4 = "gmac";
+	mediatek,port4-gmac;
 };
 
 &pcie {
diff --git a/target/linux/ramips/dts/mt7620a_sercomm_na930.dts b/target/linux/ramips/dts/mt7620a_sercomm_na930.dts
index 4a91c07ecd..329ecc5ea8 100644
--- a/target/linux/ramips/dts/mt7620a_sercomm_na930.dts
+++ b/target/linux/ramips/dts/mt7620a_sercomm_na930.dts
@@ -166,7 +166,7 @@
 };
 
 &gsw {
-	mediatek,port4 = "gmac";
+	mediatek,port4-gmac;
 };
 
 &ehci {
diff --git a/target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts b/target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts
index ae92dc85e6..4212a70dc3 100644
--- a/target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts
+++ b/target/linux/ramips/dts/mt7620a_tplink_archer-mr200.dts
@@ -178,10 +178,6 @@
 	status = "okay";
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&radio 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_tplink_archer.dtsi b/target/linux/ramips/dts/mt7620a_tplink_archer.dtsi
index 670bad615d..d2fb891433 100644
--- a/target/linux/ramips/dts/mt7620a_tplink_archer.dtsi
+++ b/target/linux/ramips/dts/mt7620a_tplink_archer.dtsi
@@ -105,10 +105,6 @@
 	status = "okay";
 };
 
-&gsw {
-	mediatek,port4 = "ephy";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&radio 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_tplink_re210-v1.dts b/target/linux/ramips/dts/mt7620a_tplink_re210-v1.dts
index 41e56fbe36..247b5752ef 100644
--- a/target/linux/ramips/dts/mt7620a_tplink_re210-v1.dts
+++ b/target/linux/ramips/dts/mt7620a_tplink_re210-v1.dts
@@ -61,7 +61,7 @@
 };
 
 &gsw {
-	mediatek,port4 = "gmac";
+	mediatek,port4-gmac;
 };
 
 &ethernet {
diff --git a/target/linux/ramips/dts/mt7620a_wavlink_wl-wn579x3.dts b/target/linux/ramips/dts/mt7620a_wavlink_wl-wn579x3.dts
index 679d9c2150..55ab939d15 100644
--- a/target/linux/ramips/dts/mt7620a_wavlink_wl-wn579x3.dts
+++ b/target/linux/ramips/dts/mt7620a_wavlink_wl-wn579x3.dts
@@ -195,7 +195,7 @@
 };
 
 &gsw {
-	mediatek,port4 = "gmac";
+	mediatek,port4-gmac;
 };
 
 &wmac {
diff --git a/target/linux/ramips/dts/mt7620a_yukai_bocco.dts b/target/linux/ramips/dts/mt7620a_yukai_bocco.dts
index 9c99a6582e..347c246e2e 100644
--- a/target/linux/ramips/dts/mt7620a_yukai_bocco.dts
+++ b/target/linux/ramips/dts/mt7620a_yukai_bocco.dts
@@ -141,10 +141,6 @@
 	mediatek,portmap = "llllw";
 };
 
-&gsw {
-	ralink,port4 = "ephy";
-};
-
 &wmac {
 	ralink,mtd-eeprom = <&factory 0x0>;
 };
diff --git a/target/linux/ramips/dts/mt7620a_zte_q7.dts b/target/linux/ramips/dts/mt7620a_zte_q7.dts
index 1ec3ba2e33..550f750c5a 100644
--- a/target/linux/ramips/dts/mt7620a_zte_q7.dts
+++ b/target/linux/ramips/dts/mt7620a_zte_q7.dts
@@ -111,7 +111,3 @@
 &ohci {
 	status = "okay";
 };
-
-&gsw {
-	mediatek,port4 = "ephy";
-};
diff --git a/target/linux/ramips/dts/mt7620a_zyxel_keenetic-viva.dts b/target/linux/ramips/dts/mt7620a_zyxel_keenetic-viva.dts
index 8c07de4845..506b828ec8 100644
--- a/target/linux/ramips/dts/mt7620a_zyxel_keenetic-viva.dts
+++ b/target/linux/ramips/dts/mt7620a_zyxel_keenetic-viva.dts
@@ -157,7 +157,7 @@
 };
 
 &gsw {
-	mediatek,port4 = "gmac";
+	mediatek,port4-gmac;
 };
 
 &wmac {
diff --git a/target/linux/ramips/dts/mt7620n.dtsi b/target/linux/ramips/dts/mt7620n.dtsi
index 2fac091898..d225cb25d8 100644
--- a/target/linux/ramips/dts/mt7620n.dtsi
+++ b/target/linux/ramips/dts/mt7620n.dtsi
@@ -347,7 +347,6 @@
 
 		interrupt-parent = <&intc>;
 		interrupts = <17>;
-		mediatek,port4 = "ephy";
 	};
 
 	ehci: ehci@101c0000 {
diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c
index 0b09814cc8..798dc919bc 100644
--- a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c
+++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c
@@ -40,7 +40,7 @@ static irqreturn_t gsw_interrupt_mt7620(int irq, void *_priv)
 	struct fe_priv *priv = (struct fe_priv *)_priv;
 	struct mt7620_gsw *gsw = (struct mt7620_gsw *)priv->soc->swpriv;
 	u32 status;
-	int i, max = (gsw->port4 == PORT4_EPHY) ? (4) : (3);
+	int i, max = (gsw->port4_ephy) ? (4) : (3);
 
 	status = mtk_switch_r32(gsw, GSW_REG_ISR);
 	if (status & PORT_IRQ_ST_CHG)
@@ -202,8 +202,8 @@ static void mt7620_hw_init(struct mt7620_gsw *gsw, int mdio_mode)
 	mtk_switch_w32(gsw, 0x7f7f7fe0, 0x0010);
 
 	/* setup port 4 */
-	if (gsw->port4 == PORT4_EPHY) {
-		u32 val = rt_sysc_r32(SYSC_REG_CFG1);
+	if (gsw->port4_ephy) {
+		val = rt_sysc_r32(SYSC_REG_CFG1);
 
 		val |= 3 << 14;
 		rt_sysc_w32(val, SYSC_REG_CFG1);
@@ -255,7 +255,6 @@ int mtk_gsw_init(struct fe_priv *priv)
 static int mt7620_gsw_probe(struct platform_device *pdev)
 {
 	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	const char *port4 = NULL;
 	struct mt7620_gsw *gsw;
 	struct device_node *np = pdev->dev.of_node;
 	u16 val;
@@ -270,13 +269,7 @@ static int mt7620_gsw_probe(struct platform_device *pdev)
 
 	gsw->dev = &pdev->dev;
 
-	of_property_read_string(np, "mediatek,port4", &port4);
-	if (port4 && !strcmp(port4, "ephy"))
-		gsw->port4 = PORT4_EPHY;
-	else if (port4 && !strcmp(port4, "gmac"))
-		gsw->port4 = PORT4_EXT;
-	else
-		gsw->port4 = PORT4_EPHY;
+	gsw->port4_ephy = !of_property_read_bool(np, "mediatek,port4-gmac");
 
 	if (of_property_read_u16(np, "mediatek,ephy-base-address", &val) == 0)
 		gsw->ephy_base = val;
diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.h b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.h
index f10946a173..91a0399976 100644
--- a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.h
+++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.h
@@ -88,16 +88,11 @@ enum {
 	GSW_ATTR_PORT_UNTAG,
 };
 
-enum {
-	PORT4_EPHY = 0,
-	PORT4_EXT,
-};
-
 struct mt7620_gsw {
 	struct device		*dev;
 	void __iomem		*base;
 	int			irq;
-	int			port4;
+	bool			port4_ephy;
 	unsigned long int	autopoll;
 	u16			ephy_base;
 };
diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c
index 7317bc30aa..085058eb11 100644
--- a/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c
+++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c
@@ -141,7 +141,7 @@ static void mt7620_port_init(struct fe_priv *priv, struct device_node *np)
 	u32 val, mask = 0;
 	u32 val_delay = 0;
 	u32 mask_delay = GSW_REG_GPCx_TXDELAY | GSW_REG_GPCx_RXDELAY;
-	int min = (gsw->port4 == PORT4_EPHY) ? (5) : (4);
+	int min = (gsw->port4_ephy) ? (5) : (4);
 
 	if (!_id || (be32_to_cpu(*_id) < min) || (be32_to_cpu(*_id) > 5)) {
 		if (_id)