Documentation/devicetree/bindings/net/cavium-pip.txt

   1 * PIP Ethernet nexus.
   2
   3 The PIP Ethernet nexus can control several data packet input/output
   4 devices.  The devices have a two level grouping scheme.  There may be
   5 several interfaces, and each interface may have several ports.  These
   6 ports might be an individual Ethernet PHY.
   7
   8
   9 Properties 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
  20 Properties 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
  31 Properties 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
  46 Example:
  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         };