Kernel-4.18.0-80.el8_cavium-pip

• PIP Ethernet nexus.

The PIP Ethernet nexus can control several data packet input/output
devices. The devices have a two level grouping scheme. There may be
several interfaces, and each interface may have several ports. These
ports might be an individual Ethernet PHY.

Properties for the PIP nexus:

• compatible: “cavium,octeon-3860-pip”

  Compatibility with all cn3XXX, cn5XXX and cn6XXX SOCs.

• reg: The base address of the PIP’s register bank.

• #address-cells: Must be <1>.

• #size-cells: Must be <0>.

Properties for PIP interfaces which is a child the PIP nexus:

• compatible: “cavium,octeon-3860-pip-interface”

  Compatibility with all cn3XXX, cn5XXX and cn6XXX SOCs.

• reg: The interface number.

• #address-cells: Must be <1>.

• #size-cells: Must be <0>.

Properties for PIP port which is a child the PIP interface:

• compatible: “cavium,octeon-3860-pip-port”

  Compatibility with all cn3XXX, cn5XXX and cn6XXX SOCs.

• reg: The port number within the interface group.

• phy-handle: Optional, see ethernet.txt file in the same directory.

• rx-delay: Delay value for RGMII receive clock. Optional. Disabled if 0.
  Value range is 1-31, and mapping to the actual delay varies depending on HW.

• tx-delay: Delay value for RGMII transmit clock. Optional. Disabled if 0.
  Value range is 1-31, and mapping to the actual delay varies depending on HW.

Example:

pip@11800a0000000 {
    compatible = "cavium,octeon-3860-pip";
    #address-cells = <1>;
    #size-cells = <0>;
    reg = <0x11800 0xa0000000 0x0 0x2000>;

    interface@0 {
        compatible = "cavium,octeon-3860-pip-interface";
        #address-cells = <1>;
        #size-cells = <0>;
        reg = <0>; /* interface */

        ethernet@0 {
            compatible = "cavium,octeon-3860-pip-port";
            reg = <0x0>; /* Port */
            local-mac-address = [ 00 0f b7 10 63 60 ];
            phy-handle = <&phy2>;
        };
        ethernet@1 {
            compatible = "cavium,octeon-3860-pip-port";
            reg = <0x1>; /* Port */
            local-mac-address = [ 00 0f b7 10 63 61 ];
            phy-handle = <&phy3>;
        };
        ethernet@2 {
            compatible = "cavium,octeon-3860-pip-port";
            reg = <0x2>; /* Port */
            local-mac-address = [ 00 0f b7 10 63 62 ];
            phy-handle = <&phy4>;
        };
        ethernet@3 {
            compatible = "cavium,octeon-3860-pip-port";
            reg = <0x3>; /* Port */
            local-mac-address = [ 00 0f b7 10 63 63 ];
            phy-handle = <&phy5>;
        };
    };

    interface@1 {
        compatible = "cavium,octeon-3860-pip-interface";
        #address-cells = <1>;
        #size-cells = <0>;
        reg = <1>; /* interface */

        ethernet@0 {
            compatible = "cavium,octeon-3860-pip-port";
            reg = <0x0>; /* Port */
            local-mac-address = [ 00 0f b7 10 63 64 ];
            phy-handle = <&phy6>;
        };
    };
};