devicetree excerpt for reading a MAC address from an EEPROM

mac_eeprom.dts

			i2c2: i2c@f8024000 {
				status = "okay";
				
				id: eeprom@50 {
					compatible = "microchip,24c02";		/* actually it's a 24AA025E48 */
					pagesize = <16>;
					read-only;
					reg = <0x50>;

					#address-cells = <1>;
					#size-cells = <1>;

					eth0_macaddress: eth0_macaddress@FA {
						reg = <0xFA 0x06>;
					};
				};
			};

			macb0: ethernet@f8020000 {
				phy-mode = "rmii";
				status = "okay";

				nvmem-cells = <&eth0_macaddress>;		/* custom nvmem reference */
				nvmem-cell-names = "mac-address";		/* see ethernet-controller.yaml */
				
				pinctrl-names = "default";
				pinctrl-0 = <&pinctrl_macb0_rmii &pinctrl_macb0_phy_irq>;

				phy0: ethernet-phy@0 {
					interrupt-parent = <&pioB>;
					interrupts = <31 IRQ_TYPE_LEVEL_LOW>;
					reg = <0>;
				};
			};