arm64: dts: rockchip: add gmac support for rk3328-evb

Change-Id: I05e4eb2d904809a310b12f0de8ae274b90dd583a
Signed-off-by: david.wu <david.wu@rock-chips.com>

arch/arm64/boot/dts/rockchip/rk3328-evb.dts

@@ -61,6 +61,20 @@
 		rockchip,baudrate = <1500000>;  /* Only 115200 and 1500000 */
 		status = "okay";
 	};
+
+	gmac_clkin: external-gmac-clock {
+		compatible = "fixed-clock";
+		clock-frequency = <125000000>;
+		clock-output-names = "gmac_clkin";
+		#clock-cells = <0>;
+	};
+
+	vcc_phy: vcc-phy-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_phy";
+		regulator-always-on;
+		regulator-boot-on;
+	};
 };
 
 &emmc {
@@ -75,6 +89,22 @@
 	status = "okay";
 };
 
+&gmac2io {
+	phy-supply = <&vcc_phy>;
+	phy-mode = "rgmii";
+	clock_in_out = "input";
+	snps,reset-gpio = <&gpio1 18 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";
+};
+
 &io_domains {
 	status = "okay";