Kernel-4.18.0-80.el8_microchip,lan78xx

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”.

Optional properties:

• local-mac-address: see ethernet.txt
• mac-address: see 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
                    >;
                };
            };
        };
    };
};

};