* System Management Interface (SMI) / MDIO Properties: - compatible: One of: "cavium,octeon-3860-mdio": Compatibility with all cn3XXX, cn5XXX and cn6XXX SOCs. "cavium,thunder-8890-mdio": Compatibility with all cn8XXX SOCs. - reg: The base address of the MDIO bus controller register bank. - #address-cells: Must be <1>. - #size-cells: Must be <0>. MDIO addresses have no size component. Typically an MDIO bus might have several children. Example: mdio@1180000001800 { compatible = "cavium,octeon-3860-mdio"; #address-cells = <1>; #size-cells = <0>; reg = <0x11800 0x00001800 0x0 0x40>; ethernet-phy@0 { ... reg = <0>; }; }; * System Management Interface (SMI) / MDIO Nexus Several mdio buses may be gathered as children of a single PCI device, this PCI device is the nexus of the buses. Properties: - compatible: "cavium,thunder-8890-mdio-nexus"; - reg: The PCI device and function numbers of the nexus device. - #address-cells: Must be <2>. - #size-cells: Must be <2>. - ranges: As needed for mapping of the MDIO bus device registers. - assigned-addresses: As needed for mapping of the MDIO bus device registers. Example: mdio-nexus@1,3 { compatible = "cavium,thunder-8890-mdio-nexus"; #address-cells = <2>; #size-cells = <2>; reg = <0x0b00 0 0 0 0>; /* DEVFN = 0x0b (1:3) */ assigned-addresses = <0x03000000 0x87e0 0x05000000 0x0 0x800000>; ranges = <0x87e0 0x05000000 0x03000000 0x87e0 0x05000000 0x0 0x800000>; mdio0@87e0,05003800 { compatible = "cavium,thunder-8890-mdio"; #address-cells = <1>; #size-cells = <0>; reg = <0x87e0 0x05003800 0x0 0x30>; ethernet-phy@0 { ... reg = <0>; }; }; mdio0@87e0,05003880 { compatible = "cavium,thunder-8890-mdio"; #address-cells = <1>; #size-cells = <0>; reg = <0x87e0 0x05003880 0x0 0x30>; ethernet-phy@0 { ... reg = <0>; }; }; };