# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/gpio/novo,nca9539-gpio.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Novosense I2C GPIO controller

maintainers:
  - Cody Xie <cody.xie@rock-chips.com>

description: |
  This controller is A GPIO expander with I2C interface and one interrupt pin.

properties:
  compatible:
    const: novo,nca9539-gpio

  reg:
    items:
      - description: the I2C address containing the GPIO controller registers.

  gpio-controller: true

  '#gpio-cells':
    const: 2

  ngpios:
    minimum: 0
    maximum: 32

  interrupt-controller: true

  '#interrupt-cells':
    const: 2

  interrupts:
    maxItems: 1

  vdd-supply:
    - description: the regulator for the VDD supplier.

required:
  - compatible
  - reg
  - "#gpio-cells"
  - gpio-controller
  - vdd-supply

additionalProperties: false

dependencies:
  interrupt-controller: [ interrupts ]

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    / {
	  nca9539_vdd: nca9539-vdd {
		compatible = "regulator-fixed";
		regulator-name = "nca9539_vdd";
		enable-active-high;
		regulator-boot-on;
		regulator-always-on;
	  };
	};

    nca9539_gpio: gpio@74 {
		compatible = "novo,nca9539-gpio";
        reg = <0x74>;
        gpio-controller;
        #gpio-cells = <2>;
		interrupt-controller;
		#interrupt-cells = <2>;
		vdd-supply = <&nca9539_vdd>;
    };


...