ARM64: dts: meson-gxl-p23x: Enable ethernet

Enable Ethernet on the p23x board, pinctrl attribute is only added for
the p230 board since the p231 only uses the Internal PHY.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dts

@@ -49,3 +49,28 @@ / {
 	compatible = "amlogic,p230", "amlogic,s905d", "amlogic,meson-gxl";
 	model = "Amlogic Meson GXL (S905D) P230 Development Board";
 };
+
+/* P230 has exclusive choice between internal or external PHY */
+&ethmac {
+	pinctrl-0 = <&eth_pins>;
+	pinctrl-names = "default";
+
+	/* Select external PHY by default */
+	phy-handle = <&external_phy>;
+
+	/* External PHY reset is shared with internal PHY Led signals */
+	snps,reset-gpio = <&gpio GPIOZ_14 0>;
+	snps,reset-delays-us = <0 10000 1000000>;
+	snps,reset-active-low;
+
+	/* External PHY is in RGMII */
+	phy-mode = "rgmii";
+};
+
+&external_mdio {
+	external_phy: ethernet-phy@0 {
+		compatible = "ethernet-phy-id001c.c916", "ethernet-phy-ieee802.3-c22";
+		reg = <0>;
+		max-speed = <1000>;
+	};
+};

arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p231.dts

@@ -49,3 +49,9 @@ / {
 	compatible = "amlogic,p231", "amlogic,s905d", "amlogic,meson-gxl";
 	model = "Amlogic Meson GXL (S905D) P231 Development Board";
 };
+
+/* P231 has only internal PHY port */
+&ethmac {
+	phy-mode = "rmii";
+	phy-handle = <&internal_phy>;
+};

arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p23x.dtsi

@@ -182,3 +182,7 @@ &pwm_ef {
 	clocks = <&clkc CLKID_FCLK_DIV4>;
 	clock-names = "clkin0";
 };
+
+&ethmac {
+	status = "okay";
+};