* Microchip PIC32 GPIO devices (PIO). Required properties: - compatible: "microchip,pic32mzda-gpio" - reg: Base address and length for the device. - interrupts: The port interrupt shared by all pins. - gpio-controller: Marks the port as GPIO controller. - #gpio-cells: Two. The first cell is the pin number and the second cell is used to specify the gpio polarity as defined in defined in : 0 = GPIO_ACTIVE_HIGH 1 = GPIO_ACTIVE_LOW 2 = GPIO_OPEN_DRAIN - interrupt-controller: Marks the device node as an interrupt controller. - #interrupt-cells: Two. The first cell is the GPIO number and second cell is used to specify the trigger type as defined in : IRQ_TYPE_EDGE_RISING IRQ_TYPE_EDGE_FALLING IRQ_TYPE_EDGE_BOTH - clocks: Clock specifier (see clock bindings for details). - microchip,gpio-bank: Specifies which bank a controller owns. - gpio-ranges: Interaction with the PINCTRL subsystem. Example: /* PORTA */ gpio0: gpio0@1f860000 { compatible = "microchip,pic32mzda-gpio"; reg = <0x1f860000 0x100>; interrupts = <118 IRQ_TYPE_LEVEL_HIGH>; #gpio-cells = <2>; gpio-controller; interrupt-controller; #interrupt-cells = <2>; clocks = <&rootclk PB4CLK>; microchip,gpio-bank = <0>; gpio-ranges = <&pic32_pinctrl 0 0 16>; }; keys { ... button@sw1 { label = "ESC"; linux,code = <1>; gpios = <&gpio0 12 0>; }; };