arm64: dts: ti: k3-am62a7-sk: Enable ethernet port

AM62A7 SK has a DP83867 PHY on the board connected to first port of
CPSW, enable the same.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20230103042110.1092122-4-vigneshr@ti.com

arch/arm64/boot/dts/ti/k3-am62a7-sk.dts

@@ -9,6 +9,7 @@
 
 #include <dt-bindings/leds/common.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/net/ti-dp83867.h>
 #include "k3-am62a7.dtsi"
 
 / {
@@ -158,6 +159,30 @@ usr_led_pins_default: usr-led-pins-default {
 			AM62AX_IOPAD(0x244, PIN_OUTPUT, 7) /* (D18) MMC1_SDWP.GPIO1_49 */
 		>;
 	};
+
+	main_mdio1_pins_default: main-mdio1-pins-default {
+		pinctrl-single,pins = <
+			AM62AX_IOPAD(0x160, PIN_OUTPUT, 0) /* (V12) MDIO0_MDC */
+			AM62AX_IOPAD(0x15c, PIN_INPUT, 0) /* (V13) MDIO0_MDIO */
+		>;
+	};
+
+	main_rgmii1_pins_default: main-rgmii1-pins-default {
+		pinctrl-single,pins = <
+			AM62AX_IOPAD(0x14c, PIN_INPUT, 0) /* (AB16) RGMII1_RD0 */
+			AM62AX_IOPAD(0x150, PIN_INPUT, 0) /* (V15) RGMII1_RD1 */
+			AM62AX_IOPAD(0x154, PIN_INPUT, 0) /* (W15) RGMII1_RD2 */
+			AM62AX_IOPAD(0x158, PIN_INPUT, 0) /* (V14) RGMII1_RD3 */
+			AM62AX_IOPAD(0x148, PIN_INPUT, 0) /* (AA16) RGMII1_RXC */
+			AM62AX_IOPAD(0x144, PIN_INPUT, 0) /* (AA15) RGMII1_RX_CTL */
+			AM62AX_IOPAD(0x134, PIN_INPUT, 0) /* (Y17) RGMII1_TD0 */
+			AM62AX_IOPAD(0x138, PIN_INPUT, 0) /* (V16) RGMII1_TD1 */
+			AM62AX_IOPAD(0x13c, PIN_INPUT, 0) /* (Y16) RGMII1_TD2 */
+			AM62AX_IOPAD(0x140, PIN_INPUT, 0) /* (AA17) RGMII1_TD3 */
+			AM62AX_IOPAD(0x130, PIN_INPUT, 0) /* (AB17) RGMII1_TXC */
+			AM62AX_IOPAD(0x12c, PIN_INPUT, 0) /* (W16) RGMII1_TX_CTL */
+		>;
+	};
 };
 
 &main_i2c0 {
@@ -221,3 +246,32 @@ &main_uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_uart0_pins_default>;
 };
+
+&cpsw3g {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_rgmii1_pins_default>;
+};
+
+&cpsw_port1 {
+	status = "okay";
+	phy-mode = "rgmii-rxid";
+	phy-handle = <&cpsw3g_phy0>;
+};
+
+&cpsw_port2 {
+	status = "disabled";
+};
+
+&cpsw3g_mdio {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_mdio1_pins_default>;
+
+	cpsw3g_phy0: ethernet-phy@0 {
+		reg = <0>;
+		ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
+		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
+		ti,min-output-impedance;
+	};
+};