# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id:
http://devicetree.org/schemas/pwm/pwm-rockchip.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Rockchip PWM controller
maintainers:
- Heiko Stuebner <heiko@sntech.de>
properties:
compatible:
oneOf:
- const: rockchip,rk2928-pwm
- const: rockchip,rk3288-pwm
- const: rockchip,rk3328-pwm
- const: rockchip,vop-pwm
- items:
- const: rockchip,rk3036-pwm
- const: rockchip,rk2928-pwm
- items:
- enum:
- rockchip,rk3128-pwm
- rockchip,rk3368-pwm
- rockchip,rk3399-pwm
- rockchip,rv1108-pwm
- const: rockchip,rk3288-pwm
- items:
- enum:
- rockchip,px30-pwm
- rockchip,rk3308-pwm
- rockchip,rk3528-pwm
- rockchip,rk3562-pwm
- rockchip,rk3568-pwm
- rockchip,rk3588-pwm
- rockchip,rv1126-pwm
- const: rockchip,rk3328-pwm
reg:
maxItems: 1
clocks:
minItems: 1
maxItems: 2
clock-names:
maxItems: 2
"#pwm-cells":
enum: [2, 3]
description:
Must be 2 (rk2928) or 3 (rk3288 and later).
See pwm.yaml for a description of the cell format.
required:
- compatible
- reg
allOf:
- $ref: pwm.yaml#
- if:
properties:
compatible:
contains:
enum:
- rockchip,rk3328-pwm
- rockchip,rv1108-pwm
then:
properties:
clocks:
items:
- description: Used to derive the functional clock for the device.
- description: Used as the APB bus clock.
clock-names:
items:
- const: pwm
- const: pclk
required:
- clocks
- clock-names
else:
properties:
clocks:
maxItems: 1
description:
Used both to derive the functional clock
for the device and as the bus clock.
required:
- clocks
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/rk3188-cru-common.h>
pwm0: pwm@20030000 {
compatible = "rockchip,rk2928-pwm";
reg = <0x20030000 0x10>;
clocks = <&cru PCLK_PWM01>;
#pwm-cells = <2>;
};
