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