Configure and enable the ethernet controller found on the MT8395 SoC,
along with the MDIO PHY/Transceiver (RTL8211FD) found on this board,
enabling 10/100/1000M Ethernet connectivity.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 .../dts/mediatek/mt8395-radxa-nio-12l.dts     | 92 +++++++++++++++++++
 1 file changed, 92 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts b/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts
index 0daf27410311..221d7062d5ef 100644
--- a/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts
@@ -21,6 +21,7 @@ / {
 	compatible = "radxa,nio-12l", "mediatek,mt8395", "mediatek,mt8195";
 
 	aliases {
+		ethernet0 = &eth;
 		serial0 = &uart0;
 	};
 
@@ -132,6 +133,26 @@ apu_mem: memory@62000000 {
 	};
 };
 
+&eth {
+	phy-mode = "rgmii-rxid";
+	phy-handle = <&rgmii_phy>;
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&eth_default_pins>;
+	pinctrl-1 = <&eth_sleep_pins>;
+	mediatek,tx-delay-ps = <2030>;
+	mediatek,mac-wol;
+	snps,reset-gpio = <&pio 93 GPIO_ACTIVE_HIGH>;
+	snps,reset-delays-us = <0 20000 100000>;
+	status = "okay";
+
+	mdio {
+		rgmii_phy: ethernet-phy@1 {
+			compatible = "ethernet-phy-id001c.c916";
+			reg = <0x1>;
+		};
+	};
+};
+
 &i2c2 {
 	clock-frequency = <400000>;
 	pinctrl-0 = <&i2c2_pins>;
@@ -297,6 +318,77 @@ &mt6359_vsram_others_ldo_reg {
 };
 
 &pio {
+	eth_default_pins: eth-default-pins {
+		pins-cc {
+			pinmux = <PINMUX_GPIO85__FUNC_GBE_TXC>,
+				 <PINMUX_GPIO86__FUNC_GBE_RXC>,
+				 <PINMUX_GPIO87__FUNC_GBE_RXDV>,
+				 <PINMUX_GPIO88__FUNC_GBE_TXEN>;
+			drive-strength = <8>;
+		};
+
+		pins-mdio {
+			pinmux = <PINMUX_GPIO89__FUNC_GBE_MDC>,
+				 <PINMUX_GPIO90__FUNC_GBE_MDIO>;
+			input-enable;
+		};
+
+		pins-power {
+			pinmux = <PINMUX_GPIO91__FUNC_GPIO91>,
+				 <PINMUX_GPIO92__FUNC_GPIO92>;
+			output-high;
+		};
+
+		pins-rst {
+			pinmux = <PINMUX_GPIO93__FUNC_GPIO93>;
+		};
+
+		pins-rxd {
+			pinmux = <PINMUX_GPIO81__FUNC_GBE_RXD3>,
+				 <PINMUX_GPIO82__FUNC_GBE_RXD2>,
+				 <PINMUX_GPIO83__FUNC_GBE_RXD1>,
+				 <PINMUX_GPIO84__FUNC_GBE_RXD0>;
+		};
+
+		pins-txd {
+			pinmux = <PINMUX_GPIO77__FUNC_GBE_TXD3>,
+				 <PINMUX_GPIO78__FUNC_GBE_TXD2>,
+				 <PINMUX_GPIO79__FUNC_GBE_TXD1>,
+				 <PINMUX_GPIO80__FUNC_GBE_TXD0>;
+			drive-strength = <8>;
+		};
+	};
+
+	eth_sleep_pins: eth-sleep-pins {
+		pins-cc {
+			pinmux = <PINMUX_GPIO85__FUNC_GPIO85>,
+				 <PINMUX_GPIO86__FUNC_GPIO86>,
+				 <PINMUX_GPIO87__FUNC_GPIO87>,
+				 <PINMUX_GPIO88__FUNC_GPIO88>;
+		};
+
+		pins-mdio {
+			pinmux = <PINMUX_GPIO89__FUNC_GPIO89>,
+				 <PINMUX_GPIO90__FUNC_GPIO90>;
+			bias-disable;
+			input-disable;
+		};
+
+		pins-rxd {
+			pinmux = <PINMUX_GPIO81__FUNC_GPIO81>,
+				 <PINMUX_GPIO82__FUNC_GPIO82>,
+				 <PINMUX_GPIO83__FUNC_GPIO83>,
+				 <PINMUX_GPIO84__FUNC_GPIO84>;
+		};
+
+		pins-txd {
+			pinmux = <PINMUX_GPIO77__FUNC_GPIO77>,
+				 <PINMUX_GPIO78__FUNC_GPIO78>,
+				 <PINMUX_GPIO79__FUNC_GPIO79>,
+				 <PINMUX_GPIO80__FUNC_GPIO80>;
+		};
+	};
+
 	i2c2_pins: i2c2-pins {
 		pins-bus {
 			pinmux = <PINMUX_GPIO12__FUNC_SDA2>,
-- 
2.43.0