u-boot/arch/arm/dts/sun50i-a64-pine64-plus-u-boot.dtsi

/ {
	aliases {
		ethernet0 = &emac;
	};

	soc {
		syscon: syscon@1c00000 {
			compatible = "allwinner,sun50i-a64-system-controller",
				     "syscon";
			reg = <0x01c00000 0x1000>;
		};

		emac: ethernet@1c30000 {
			compatible = "allwinner,sun50i-a64-emac";
			syscon = <&syscon>;
			reg = <0x01c30000 0x10000>;
			interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
			interrupt-names = "macirq";
			resets = <&ccu RST_BUS_EMAC>;
			reset-names = "stmmaceth";
			clocks = <&ccu CLK_BUS_EMAC>;
			clock-names = "stmmaceth";
			#address-cells = <1>;
			#size-cells = <0>;
			pinctrl-names = "default";
			pinctrl-0 = <&rgmii_pins>;
			phy-mode = "rgmii";
			phy-handle = <&ext_rgmii_phy>;
			status = "okay";

			mdio: mdio {
				compatible = "snps,dwmac-mdio";
				#address-cells = <1>;
				#size-cells = <0>;
				ext_rgmii_phy: ethernet-phy@1 {
					compatible = "ethernet-phy-ieee802.3-c22";
					reg = <1>;
				};
			};
		};
	};
};

&pio {
	rmii_pins: rmii_pins {
		pins = "PD10", "PD11", "PD13", "PD14", "PD17",
		       "PD18", "PD19", "PD20", "PD22", "PD23";
		function = "emac";
		drive-strength = <40>;
	};

	rgmii_pins: rgmii_pins {
		pins = "PD8", "PD9", "PD10", "PD11", "PD12",
		       "PD13", "PD15", "PD16", "PD17", "PD18",
		       "PD19", "PD20", "PD21", "PD22", "PD23";
		function = "emac";
		drive-strength = <40>;
	};
};