Documentation/devicetree/bindings/board/fsl-board.txt

   1 Freescale Reference Board Bindings
   2
   3 This document describes device tree bindings for various devices that
   4 exist on some Freescale reference boards.
   5
   6 * Board Control and Status (BCSR)
   7
   8 Required properties:
   9
  10  - compatible : Should be "fsl,<board>-bcsr"
  11  - reg : Offset and length of the register set for the device
  12
  13 Example:
  14
  15         bcsr@f8000000 {
  16                 compatible = "fsl,mpc8360mds-bcsr";
  17                 reg = <f8000000 8000>;
  18         };
  19
  20 * Freescale on-board FPGA
  21
  22 This is the memory-mapped registers for on board FPGA.
  23
  24 Required properties:
  25 - compatible: should be a board-specific string followed by a string
  26   indicating the type of FPGA.  Example:
  27         "fsl,<board>-fpga", "fsl,fpga-pixis", or
  28         "fsl,<board>-fpga", "fsl,fpga-qixis"
  29 - reg: should contain the address and the length of the FPGA register set.
  30
  31 Optional properties:
  32 - interrupt-parent: should specify phandle for the interrupt controller.
  33 - interrupts: should specify event (wakeup) IRQ.
  34
  35 Example (P1022DS):
  36
  37          board-control@3,0 {
  38                  compatible = "fsl,p1022ds-fpga", "fsl,fpga-ngpixis";
  39                  reg = <3 0 0x30>;
  40                  interrupt-parent = <&mpic>;
  41                  interrupts = <8 8 0 0>;
  42          };
  43
  44 Example (LS2080A-RDB):
  45
  46         cpld@3,0 {
  47                 compatible = "fsl,ls2080ardb-fpga", "fsl,fpga-qixis";
  48                 reg = <0x3 0 0x10000>;
  49         };
  50
  51 * Freescale BCSR GPIO banks
  52
  53 Some BCSR registers act as simple GPIO controllers, each such
  54 register can be represented by the gpio-controller node.
  55
  56 Required properities:
  57 - compatible : Should be "fsl,<board>-bcsr-gpio".
  58 - reg : Should contain the address and the length of the GPIO bank
  59   register.
  60 - #gpio-cells : Should be two. The first cell is the pin number and the
  61   second cell is used to specify optional parameters (currently unused).
  62 - gpio-controller : Marks the port as GPIO controller.
  63
  64 Example:
  65
  66         bcsr@1,0 {
  67                 #address-cells = <1>;
  68                 #size-cells = <1>;
  69                 compatible = "fsl,mpc8360mds-bcsr";
  70                 reg = <1 0 0x8000>;
  71                 ranges = <0 1 0 0x8000>;
  72
  73                 bcsr13: gpio-controller@d {
  74                         #gpio-cells = <2>;
  75                         compatible = "fsl,mpc8360mds-bcsr-gpio";
  76                         reg = <0xd 1>;
  77                         gpio-controller;
  78                 };
  79         };
  80
  81 * Freescale on-board FPGA connected on I2C bus
  82
  83 Some Freescale boards like BSC9132QDS have on board FPGA connected on
  84 the i2c bus.
  85
  86 Required properties:
  87 - compatible: Should be a board-specific string followed by a string
  88   indicating the type of FPGA.  Example:
  89         "fsl,<board>-fpga", "fsl,fpga-qixis-i2c"
  90 - reg: Should contain the address of the FPGA
  91
  92 Example:
  93         fpga: fpga@66 {
  94                 compatible = "fsl,bsc9132qds-fpga", "fsl,fpga-qixis-i2c";
  95                 reg = <0x66>;
  96         };
  97
  98 * Freescale on-board CPLD
  99
 100 Some Freescale boards like T1040RDB have an on board CPLD connected.
 101
 102 Required properties:
 103 - compatible: Should be a board-specific string like "fsl,<board>-cpld"
 104   Example:
 105         "fsl,t1040rdb-cpld", "fsl,t1042rdb-cpld", "fsl,t1042rdb_pi-cpld"
 106 - reg: should describe CPLD registers
 107
 108 Example:
 109         cpld@3,0 {
 110                 compatible = "fsl,t1040rdb-cpld";
 111                 reg = <3 0 0x300>;
 112         };