Microchip LAN78xx Gigabit Ethernet controller The LAN78XX devices are usually configured by programming their OTP or with an external EEPROM, but some platforms (e.g. Raspberry Pi 3 B+) have neither. The Device Tree properties, if present, override the OTP and EEPROM. Required properties: - compatible: Should be one of "usb424,7800", "usb424,7801" or "usb424,7850". The MAC address will be determined using the optional properties defined in ethernet.txt. Optional properties of the embedded PHY: - microchip,led-modes: a 0..4 element vector, with each element configuring the operating mode of an LED. Omitted LEDs are turned off. Allowed values are defined in "include/dt-bindings/net/microchip-lan78xx.h". Example: /* Based on the configuration for a Raspberry Pi 3 B+ */ &usb { usb-port@1 { compatible = "usb424,2514"; reg = <1>; #address-cells = <1>; #size-cells = <0>; usb-port@1 { compatible = "usb424,2514"; reg = <1>; #address-cells = <1>; #size-cells = <0>; ethernet: ethernet@1 { compatible = "usb424,7800"; reg = <1>; local-mac-address = [ 00 11 22 33 44 55 ]; mdio { #address-cells = <0x1>; #size-cells = <0x0>; eth_phy: ethernet-phy@1 { reg = <1>; microchip,led-modes = < LAN78XX_LINK_1000_ACTIVITY LAN78XX_LINK_10_100_ACTIVITY >; }; }; }; }; }; };