Documentation/devicetree/bindings/gpio/gpio-mpc8xxx.txt

   1 * Freescale MPC512x/MPC8xxx/QorIQ/Layerscape GPIO controller
   2
   3 Required properties:
   4 - compatible : Should be "fsl,<soc>-gpio"
   5   The following <soc>s are known to be supported:
   6         mpc5121, mpc5125, mpc8349, mpc8572, mpc8610, pq3, qoriq,
   7         ls1021a, ls1043a, ls2080a.
   8 - reg : Address and length of the register set for the device
   9 - interrupts : Should be the port interrupt shared by all 32 pins.
  10 - #gpio-cells : Should be two.  The first cell is the pin number and
  11   the second cell is used to specify the gpio polarity:
  12       0 = active high
  13       1 = active low
  14
  15 Optional properties:
  16 - little-endian : GPIO registers are used as little endian. If not
  17                   present registers are used as big endian by default.
  18
  19 Example of gpio-controller node for a mpc5125 SoC:
  20
  21 gpio0: gpio@1100 {
  22         compatible = "fsl,mpc5125-gpio";
  23         #gpio-cells = <2>;
  24         reg = <0x1100 0x080>;
  25         interrupts = <78 0x8>;
  26         status = "okay";
  27 };
  28
  29 Example of gpio-controller node for a ls2080a SoC:
  30
  31 gpio0: gpio@2300000 {
  32         compatible = "fsl,ls2080a-gpio", "fsl,qoriq-gpio";
  33         reg = <0x0 0x2300000 0x0 0x10000>;
  34         interrupts = <0 36 0x4>; /* Level high type */
  35         gpio-controller;
  36         little-endian;
  37         #gpio-cells = <2>;
  38         interrupt-controller;
  39         #interrupt-cells = <2>;
  40 };