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