ARM: dts: rockchip: Add gmac support for rk3288-vyasa board

Sync gmac dts node from Linux.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

arch/arm/dts/rk3288-vyasa.dts

@@ -104,12 +104,35 @@
 		regulator-boot-on;
 		vin-supply = <&dc12_vbat>;
 	};
+
+	ext_gmac: external-gmac-clock {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <125000000>;
+		clock-output-names = "ext_gmac";
+	};
 };
 
 &cpu0 {
 	cpu0-supply = <&vdd_cpu>;
 };
 
+&gmac {
+	assigned-clocks = <&cru SCLK_MAC>;
+	assigned-clock-parents = <&ext_gmac>;
+	clock_in_out = "input";
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgmii_pins>, <&phy_rst>, <&phy_pmeb>, <&phy_int>;
+	phy-supply = <&vcc_lan>;
+	phy-mode = "rgmii";
+	snps,reset-active-low;
+	snps,reset-delays-us = <0 10000 1000000>;
+	snps,reset-gpio = <&gpio4 RK_PB0 GPIO_ACTIVE_LOW>;
+	tx_delay = <0x30>;
+	rx_delay = <0x10>;
+	status = "okay";
+};
+
 &gpu {
 	mali-supply = <&vdd_gpu>;
 	status = "okay";
@@ -355,6 +378,24 @@
 };
 
 &pinctrl {
+	pcfg_output_high: pcfg-output-high {
+		output-high;
+	};
+
+	gmac {
+		phy_int: phy-int {
+			rockchip,pins = <0 RK_PB1 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+
+		phy_pmeb: phy-pmeb {
+			rockchip,pins = <0 RK_PA6 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+
+		phy_rst: phy-rst {
+			rockchip,pins = <4 RK_PB0 RK_FUNC_GPIO &pcfg_output_high>;
+		};
+	};
+
 	pmic {
 		pmic_int: pmic-int {
 			rockchip,pins = <RK_GPIO0 4 RK_FUNC_GPIO &pcfg_pull_up>;