dt-bindings: pwm: Convert BCM7038 PWM binding to YAML

Broadcom BCM7038 PWM controller (BCM7xxx Set Top Box PWM controller)

Required properties:

- compatible: must be "brcm,bcm7038-pwm"

- reg: physical base address and length for this controller

- #pwm-cells: should be 2. See pwm.yaml in this directory for a description

  of the cells format

- clocks: a phandle to the reference clock for this block which is fed through

  its internal variable clock frequency generator

Example:

	pwm: pwm@f0408000 {

		compatible = "brcm,bcm7038-pwm";

		reg = <0xf0408000 0x28>;

		#pwm-cells = <2>;

		clocks = <&upg_fixed>;

	};

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/pwm/brcm,bcm7038-pwm.yaml#

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

title: Broadcom BCM7038 PWM controller (BCM7xxx Set Top Box PWM controller)

maintainers:

  - Florian Fainelli <f.fainelli@gmail.com>

allOf:

  - $ref: pwm.yaml#

properties:

  compatible:

    const: brcm,bcm7038-pwm

  reg:

    maxItems: 1

  "#pwm-cells":

    const: 2

  clocks:

    maxItems: 1

required:

  - compatible

  - reg

  - "#pwm-cells"

  - clocks

additionalProperties: false

examples:

  - |

    pwm: pwm@f0408000 {

       compatible = "brcm,bcm7038-pwm";

       reg = <0xf0408000 0x28>;

       #pwm-cells = <2>;

       clocks = <&upg_fixed>;

    };