rockchip: dts: rk3328-evb: Enable gmac2io for rk3328-evb

Add rk3328-evb gmac support.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

arch/arm/dts/rk3328-evb.dts

@@ -15,6 +15,13 @@
 		stdout-path = &uart2;
 	};
 
+	gmac_clkin: external-gmac-clock {
+		compatible = "fixed-clock";
+		clock-frequency = <125000000>;
+		clock-output-names = "gmac_clkin";
+		#clock-cells = <0>;
+	};
+
 	vcc3v3_sdmmc: sdmmc-pwren {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc3v3";
@@ -40,6 +47,13 @@
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
 	};
+
+	vcc_phy: vcc-phy-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_phy";
+		regulator-always-on;
+		regulator-boot-on;
+	};
 };
 
 &saradc {
@@ -74,6 +88,22 @@
 	status = "okay";
 };
 
+&gmac2io {
+	phy-supply = <&vcc_phy>;
+	phy-mode = "rgmii";
+	clock_in_out = "input";
+	snps,reset-gpio = <&gpio1 RK_PC2 GPIO_ACTIVE_LOW>;
+	snps,reset-active-low;
+	snps,reset-delays-us = <0 10000 50000>;
+	assigned-clocks = <&cru SCLK_MAC2IO>, <&cru SCLK_MAC2IO_EXT>;
+	assigned-clock-parents = <&gmac_clkin>, <&gmac_clkin>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgmiim1_pins>;
+	tx_delay = <0x26>;
+	rx_delay = <0x11>;
+	status = "okay";
+};
+
 &usb_host0_ehci {
 	status = "okay";
 };