tegrakernel/kernel/kernel-4.9/Documentation/devicetree/bindings/net/smsc-lan87xx.txt

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SMSC LAN87xx Ethernet PHY
Some boards require special tuning values. Configure them
through an Ethernet OF device node.
Optional properties:
- smsc,disable-energy-detect:
If set, do not enable energy detect mode for the SMSC phy.
default: enable energy detect mode
Examples:
smsc phy with disabled energy detect mode on an am335x based board.
&davinci_mdio {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&davinci_mdio_default>;
pinctrl-1 = <&davinci_mdio_sleep>;
status = "okay";
ethernetphy0: ethernet-phy@0 {
reg = <0>;
smsc,disable-energy-detect;
};
};