linux-sg2042/Documentation/devicetree/bindings/net/hisilicon-femac-mdio.txt

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Hisilicon Fast Ethernet MDIO Controller interface
Required properties:
- compatible: should be "hisilicon,hisi-femac-mdio".
- reg: address and length of the register set for the device.
- clocks: A phandle to the reference clock for this device.
- PHY subnode: inherits from phy binding [1]
[1] Documentation/devicetree/bindings/net/phy.txt
Example:
mdio: mdio@10091100 {
compatible = "hisilicon,hisi-femac-mdio";
reg = <0x10091100 0x10>;
clocks = <&crg HI3516CV300_MDIO_CLK>;
#address-cells = <1>;
#size-cells = <0>;
phy0: phy@1 {
reg = <1>;
};
};