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1* PIP Ethernet nexus.2 3The PIP Ethernet nexus can control several data packet input/output4devices. The devices have a two level grouping scheme. There may be5several interfaces, and each interface may have several ports. These6ports might be an individual Ethernet PHY.7 8 9Properties for the PIP nexus:10- compatible: "cavium,octeon-3860-pip"11 12 Compatibility with all cn3XXX, cn5XXX and cn6XXX SOCs.13 14- reg: The base address of the PIP's register bank.15 16- #address-cells: Must be <1>.17 18- #size-cells: Must be <0>.19 20Properties for PIP interfaces which is a child the PIP nexus:21- compatible: "cavium,octeon-3860-pip-interface"22 23 Compatibility with all cn3XXX, cn5XXX and cn6XXX SOCs.24 25- reg: The interface number.26 27- #address-cells: Must be <1>.28 29- #size-cells: Must be <0>.30 31Properties for PIP port which is a child the PIP interface:32- compatible: "cavium,octeon-3860-pip-port"33 34 Compatibility with all cn3XXX, cn5XXX and cn6XXX SOCs.35 36- reg: The port number within the interface group.37 38- phy-handle: Optional, see ethernet.txt file in the same directory.39 40- rx-delay: Delay value for RGMII receive clock. Optional. Disabled if 0.41 Value range is 1-31, and mapping to the actual delay varies depending on HW.42 43- tx-delay: Delay value for RGMII transmit clock. Optional. Disabled if 0.44 Value range is 1-31, and mapping to the actual delay varies depending on HW.45 46Example:47 48 pip@11800a0000000 {49 compatible = "cavium,octeon-3860-pip";50 #address-cells = <1>;51 #size-cells = <0>;52 reg = <0x11800 0xa0000000 0x0 0x2000>;53 54 interface@0 {55 compatible = "cavium,octeon-3860-pip-interface";56 #address-cells = <1>;57 #size-cells = <0>;58 reg = <0>; /* interface */59 60 ethernet@0 {61 compatible = "cavium,octeon-3860-pip-port";62 reg = <0x0>; /* Port */63 local-mac-address = [ 00 0f b7 10 63 60 ];64 phy-handle = <&phy2>;65 };66 ethernet@1 {67 compatible = "cavium,octeon-3860-pip-port";68 reg = <0x1>; /* Port */69 local-mac-address = [ 00 0f b7 10 63 61 ];70 phy-handle = <&phy3>;71 };72 ethernet@2 {73 compatible = "cavium,octeon-3860-pip-port";74 reg = <0x2>; /* Port */75 local-mac-address = [ 00 0f b7 10 63 62 ];76 phy-handle = <&phy4>;77 };78 ethernet@3 {79 compatible = "cavium,octeon-3860-pip-port";80 reg = <0x3>; /* Port */81 local-mac-address = [ 00 0f b7 10 63 63 ];82 phy-handle = <&phy5>;83 };84 };85 86 interface@1 {87 compatible = "cavium,octeon-3860-pip-interface";88 #address-cells = <1>;89 #size-cells = <0>;90 reg = <1>; /* interface */91 92 ethernet@0 {93 compatible = "cavium,octeon-3860-pip-port";94 reg = <0x0>; /* Port */95 local-mac-address = [ 00 0f b7 10 63 64 ];96 phy-handle = <&phy6>;97 };98 };99 };100