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56 lines
1.5 KiB
56 lines
1.5 KiB
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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The MAC address will be determined using the optional properties |
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defined in 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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- microchip,downshift-after: sets the number of failed auto-negotiation |
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attempts after which the link is downgraded from 1000BASE-T. Should be one of |
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2, 3, 4, 5 or 0, where 0 means never downshift. |
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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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