Kernel-4.18.0-80.el8_mrvl-gpio

• Marvell PXA GPIO controller

Required properties:

• compatible : Should be “intel,pxa25x-gpio”, “intel,pxa26x-gpio”,

    "intel,pxa27x-gpio", "intel,pxa3xx-gpio",
    "marvell,pxa93x-gpio", "marvell,mmp-gpio",
    "marvell,mmp2-gpio" or marvell,pxa1928-gpio.
  

• reg : Address and length of the register set for the device
• interrupts : Should be the port interrupt shared by all gpio pins.
  There’re three gpio interrupts in arch-pxa, and they’re gpio0,
  gpio1 and gpio_mux. There’re only one gpio interrupt in arch-mmp,
  gpio_mux.
• interrupt-names : Should be the names of irq resources. Each interrupt
  uses its own interrupt name, so there should be as many interrupt names
  as referenced interrupts.
• interrupt-controller : Identifies the node as an interrupt controller.
• #interrupt-cells: Specifies the number of cells needed to encode an
  interrupt source.
• 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 flags. See gpio.txt for possible
  values.

Example for a MMP platform:

gpio: gpio@d4019000 {
    compatible = "marvell,mmp-gpio";
    reg = <0xd4019000 0x1000>;
    interrupts = <49>;
    interrupt-names = "gpio_mux";
    gpio-controller;
    #gpio-cells = <2>;
    interrupt-controller;
    #interrupt-cells = <1>;
  };

Example for a PXA3xx platform:

gpio: gpio@40e00000 {
    compatible = "intel,pxa3xx-gpio";
    reg = <0x40e00000 0x10000>;
    interrupt-names = "gpio0", "gpio1", "gpio_mux";
    interrupts = <8 9 10>;
    gpio-controller;
    #gpio-cells = <0x2>;
    interrupt-controller;
    #interrupt-cells = <0x2>;
};