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

   1 Netlogic XLP Family GPIO
   2 ========================
   3
   4 This GPIO driver is used for following Netlogic XLP SoCs:
   5         XLP832, XLP316, XLP208, XLP980, XLP532
   6
   7 Required properties:
   8 -------------------
   9
  10 - compatible: Should be one of the following:
  11   - "netlogic,xlp832-gpio": For Netlogic XLP832
  12   - "netlogic,xlp316-gpio": For Netlogic XLP316
  13   - "netlogic,xlp208-gpio": For Netlogic XLP208
  14   - "netlogic,xlp980-gpio": For Netlogic XLP980
  15   - "netlogic,xlp532-gpio": For Netlogic XLP532
  16 - reg: Physical base address and length of the controller's registers.
  17 - #gpio-cells: Should be two. The first cell is the pin number and the second
  18   cell is used to specify optional parameters (currently unused).
  19 - gpio-controller: Marks the device node as a GPIO controller.
  20 - nr-gpios: Number of GPIO pins supported by the controller.
  21 - interrupt-cells: Should be two. The first cell is the GPIO Number. The
  22   second cell is used to specify flags. The following subset of flags is
  23   supported:
  24   - trigger type:
  25         1 = low to high edge triggered.
  26         2 = high to low edge triggered.
  27         4 = active high level-sensitive.
  28         8 = active low level-sensitive.
  29 - interrupts: Interrupt number for this device.
  30 - interrupt-parent: phandle of the parent interrupt controller.
  31 - interrupt-controller: Identifies the node as an interrupt controller.
  32
  33 Example:
  34
  35         gpio: xlp_gpio@34000 {
  36                 compatible = "netlogic,xlp316-gpio";
  37                 reg = <0 0x34100 0x1000
  38                        0 0x35100 0x1000>;
  39                 #gpio-cells = <2>;
  40                 gpio-controller;
  41                 nr-gpios = <57>;
  42
  43                 #interrupt-cells = <2>;
  44                 interrupt-parent = <&pic>;
  45                 interrupts = <39>;
  46                 interrupt-controller;
  47         };