# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/gpio/novo,nca9539-gpio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Novosense I2C GPIO controller
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maintainers:
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- Cody Xie <cody.xie@rock-chips.com>
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description: |
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This controller is A GPIO expander with I2C interface and one interrupt pin.
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properties:
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compatible:
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const: novo,nca9539-gpio
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reg:
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items:
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- description: the I2C address containing the GPIO controller registers.
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gpio-controller: true
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'#gpio-cells':
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const: 2
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ngpios:
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minimum: 0
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maximum: 32
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interrupt-controller: true
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'#interrupt-cells':
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const: 2
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interrupts:
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maxItems: 1
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vdd-supply:
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- description: the regulator for the VDD supplier.
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required:
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- compatible
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- reg
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- "#gpio-cells"
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- gpio-controller
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- vdd-supply
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additionalProperties: false
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dependencies:
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interrupt-controller: [ interrupts ]
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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/ {
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nca9539_vdd: nca9539-vdd {
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compatible = "regulator-fixed";
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regulator-name = "nca9539_vdd";
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enable-active-high;
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regulator-boot-on;
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regulator-always-on;
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};
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};
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nca9539_gpio: gpio@74 {
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compatible = "novo,nca9539-gpio";
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reg = <0x74>;
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gpio-controller;
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#gpio-cells = <2>;
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interrupt-controller;
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#interrupt-cells = <2>;
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vdd-supply = <&nca9539_vdd>;
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};
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...
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