Kernel-4.18.0-80.el8_gpio-ath79

Binding for Qualcomm Atheros AR7xxx/AR9xxx GPIO controller

Required properties:

• compatible: has to be “qca,-gpio” and one of the following
  fallbacks:
  • “qca,ar7100-gpio”
  • “qca,ar9340-gpio”
• reg: Base address and size of the controllers memory area
• gpio-controller : Marks the device node as a GPIO controller.
• #gpio-cells : Should be two. The first cell is the pin number and the
  second cell is used to specify optional parameters.
• ngpios: Should be set to the number of GPIOs available on the SoC.

Optional properties:

• interrupt-parent: phandle of the parent interrupt controller.
• interrupts: Interrupt specifier for the controllers interrupt.
• interrupt-controller : Identifies the node as an interrupt controller
• #interrupt-cells : Specifies the number of cells needed to encode interrupt

         source, should be 2
  

Please refer to interrupts.txt in this directory for details of the common
Interrupt Controllers bindings used by client devices.

Example:

gpio@18040000 {
    compatible = "qca,ar9132-gpio", "qca,ar7100-gpio";
    reg = <0x18040000 0x30>;
    interrupts = <2>;

    ngpios = <22>;

    gpio-controller;
    #gpio-cells = <2>;

    interrupt-controller;
    #interrupt-cells = <2>;
};