Documentation/devicetree/bindings/pwm/pwm-gpio.yaml


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

title: Generic software PWM for modulating GPIOs

maintainers:
  - Stefan Wahren <wahrenst@gmx.net>

allOf:
  - $ref: pwm.yaml#

properties:
  compatible:
    const: pwm-gpio

  "#pwm-cells":
    const: 3
    description:
      See pwm.yaml in this directory for a description of the cells format.
      The first cell which represents the PWM instance number must always
      be zero.

  gpios:
    description:
      GPIO to be modulated
    maxItems: 1

required:
  - compatible
  - "#pwm-cells"
  - gpios

additionalProperties: false

examples:
  - |
    #include <dt-bindings/gpio/gpio.h>

    pwm {
        #pwm-cells = <3>;
        compatible = "pwm-gpio";
        gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
    };