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* 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>;
};
};
};
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