Bindings/usb/octeon-usb.txt

   1 OCTEON/OCTEON+ USB BLOCK
   2
   3 1) Main node
   4
   5    Required properties:
   6
   7    - compatible: must be "cavium,octeon-5750-usbn"
   8
   9    - reg: specifies the physical base address of the USBN block and
  10      the length of the memory mapped region.
  11
  12    - #address-cells: specifies the number of cells needed to encode an
  13      address. The value must be 2.
  14
  15    - #size-cells: specifies the number of cells used to represent the size
  16      of an address. The value must be 2.
  17
  18    - ranges: specifies the translation between child address space and parent
  19      address space.
  20
  21    - clock-frequency: speed of the USB reference clock. Allowed values are
  22      12000000, 24000000 or 48000000.
  23
  24    - cavium,refclk-type: type of the USB reference clock. Allowed values are
  25      "crystal" or "external".
  26
  27    - refclk-frequency: deprecated, use "clock-frequency".
  28
  29    - refclk-type: deprecated, use "cavium,refclk-type".
  30
  31 2) Child node
  32
  33    The main node must have one child node which describes the built-in
  34    USB controller.
  35
  36    Required properties:
  37
  38    - compatible: must be "cavium,octeon-5750-usbc"
  39
  40    - reg: specifies the physical base address of the USBC block and
  41      the length of the memory mapped region.
  42
  43    - interrupts: specifies the interrupt number for the USB controller.
  44
  45 3) Example:
  46
  47         usbn: usbn@1180068000000 {
  48                 compatible = "cavium,octeon-5750-usbn";
  49                 reg = <0x11800 0x68000000 0x0 0x1000>;
  50                 ranges; /* Direct mapping */
  51                 #address-cells = <2>;
  52                 #size-cells = <2>;
  53                 clock-frequency = <12000000>;
  54                 cavium,refclk-type = "crystal";
  55
  56                 usbc@16f0010000000 {
  57                         compatible = "cavium,octeon-5750-usbc";
  58                         reg = <0x16f00 0x10000000 0x0 0x80000>;
  59                         interrupts = <0 56>;
  60                 };
  61         };
  62