dt-bindings: pwm: Convert google,cros-ec-pwm.txt to YAML format

* PWM controlled by ChromeOS EC

Google's ChromeOS EC PWM is a simple PWM attached to the Embedded Controller

(EC) and controlled via a host-command interface.

An EC PWM node should be only found as a sub-node of the EC node (see

Documentation/devicetree/bindings/mfd/cros-ec.txt).

Required properties:

- compatible: Must contain "google,cros-ec-pwm"

- #pwm-cells: Should be 1. The cell specifies the PWM index.

Example:

	cros-ec@0 {

		compatible = "google,cros-ec-spi";

		...

		cros_ec_pwm: ec-pwm {

			compatible = "google,cros-ec-pwm";

			#pwm-cells = <1>;

		};

	};

# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/pwm/google,cros-ec-pwm.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: PWM controlled by ChromeOS EC

maintainers:

  - Thierry Reding <thierry.reding@gmail.com>

  - '"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>'

description: |

  Google's ChromeOS EC PWM is a simple PWM attached to the Embedded Controller

  (EC) and controlled via a host-command interface.

  An EC PWM node should be only found as a sub-node of the EC node (see

  Documentation/devicetree/bindings/mfd/cros-ec.txt).

properties:

  compatible:

    const: google,cros-ec-pwm

  "#pwm-cells":

    description: The cell specifies the PWM index.

    const: 1

required:

  - compatible

  - '#pwm-cells'

additionalProperties: false

examples:

  - |

    cros-ec@0 {

        compatible = "google,cros-ec-spi";

        cros_ec_pwm: ec-pwm {

            compatible = "google,cros-ec-pwm";

            #pwm-cells = <1>;

        };

    };