mediatek: fix support for gmac1 using external PHY

Signed-off-by: John Crispin <john@phrozen.org>

target/linux/mediatek/config-4.9

@@ -218,6 +218,7 @@ CONFIG_I2C=y
 CONFIG_I2C_BOARDINFO=y
 CONFIG_I2C_CHARDEV=y
 CONFIG_I2C_MT65XX=y
+CONFIG_ICPLUS_PHY=y
 CONFIG_IIO=y
 # CONFIG_IIO_BUFFER is not set
 # CONFIG_IIO_TRIGGER is not set

target/linux/mediatek/files/arch/arm/boot/dts/mt7623-NAND.dts

@@ -454,6 +454,14 @@
 &gmac1 {
 	mac-address = [00 11 22 33 44 56];
 	status = "okay";
+
+	phy-mode = "trgmii";
+
+	fixed-link {
+		speed = <1000>;
+		full-duplex;
+		pause;
+	};
 };
 
 &gmac2 {
@@ -490,29 +498,45 @@
 			port@0 {
 				reg = <0>;
 				label = "lan0";
+				cpu = <&cpu_port0>;
 			};
 
 			port@1 {
 				reg = <1>;
 				label = "lan1";
+				cpu = <&cpu_port0>;
 			};
 
 			port@2 {
 				reg = <2>;
 				label = "lan2";
+				cpu = <&cpu_port0>;
 			};
 
 			port@3 {
 				reg = <3>;
 				label = "lan3";
+				cpu = <&cpu_port0>;
 			};
 
 			port@4 {
 				reg = <4>;
 				label = "wan";
+				cpu = <&cpu_port1>;
 			};
 
-			port@6 {
+			cpu_port1: port@5 {
+				reg = <5>;
+				label = "cpu";
+				ethernet = <&gmac2>;
+				phy-mode = "trgmii";
+				fixed-link {
+					speed = <1000>;
+					full-duplex;
+				};
+			};
+
+			cpu_port0: port@6 {
 				reg = <6>;
 				label = "cpu";
 				ethernet = <&gmac1>;
@@ -526,7 +550,6 @@
 	};
 };
 
-
 &pwm {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pwm_pins>;

target/linux/mediatek/files/arch/arm/boot/dts/mt7623-eMMC.dts

@@ -474,6 +474,65 @@
 &gmac2 {
 	mac-address = [00 11 22 33 44 55];
 	status = "okay";
+
+	phy-handle = <&phy5>;
+};
+
+&mdio0 {
+	switch@0 {
+		compatible = "mediatek,mt7530";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&eth_default>;
+
+		core-supply = <&mt6323_vpa_reg>;
+		io-supply = <&mt6323_vemc3v3_reg>;
+		reset-gpios = <&pio 33 0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+			port@0 {
+				reg = <0>;
+				label = "lan0";
+			};
+
+			port@1 {
+				reg = <1>;
+				label = "lan1";
+			};
+
+			port@2 {
+				reg = <2>;
+				label = "lan2";
+			};
+
+			port@3 {
+				reg = <3>;
+				label = "lan3";
+			};
+
+			port@6 {
+				reg = <6>;
+				label = "cpu";
+				ethernet = <&gmac1>;
+				phy-mode = "trgmii";
+				fixed-link {
+					speed = <1000>;
+					full-duplex;
+				};
+			};
+		};
+	};
+
+	phy5: ethernet-phy@5 {
+		reg = <5>;
+		phy-mode = "rgmii-rxid";
+	};
 };
 
 &pwm {

target/linux/mediatek/patches-4.9/0095-ephy.patch

@@ -0,0 +1,30 @@
+Index: linux-4.9.20/drivers/net/dsa/mt7530.c
+===================================================================
+--- linux-4.9.20.orig/drivers/net/dsa/mt7530.c
++++ linux-4.9.20/drivers/net/dsa/mt7530.c
+@@ -629,6 +629,11 @@ mt7530_setup(struct dsa_switch *ds)
+ 	val = mt7530_read(priv, MT7530_MHWTRAP);
+ 	val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS;
+ 	val |= MHWTRAP_MANUAL;
++	if (!dsa_is_cpu_port(ds, 5)) {
++		val |= MHWTRAP_P5_DIS;
++		val |= MHWTRAP_P5_MAC_SEL;
++		val |= MHWTRAP_P5_RGMII_MODE;
++	}
+ 	mt7530_write(priv, MT7530_MHWTRAP, val);
+ 
+ 	/* Enable and reset MIB counters */
+Index: linux-4.9.20/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+===================================================================
+--- linux-4.9.20.orig/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ linux-4.9.20/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -221,6 +221,9 @@ static void mtk_phy_link_adjust(struct n
+ 		netif_carrier_on(dev);
+ 	else
+ 		netif_carrier_off(dev);
++
++	if (!of_phy_is_fixed_link(mac->of_node))
++		phy_print_status(dev->phydev);
+ }
+ 
+ static int mtk_phy_connect_node(struct mtk_eth *eth, struct mtk_mac *mac,