1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/pwm/clk-pwm.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Clock based PWM controller 8 9maintainers: 10 - Nikita Travkin <nikita@trvn.ru> 11 12description: | 13 Some systems have clocks that can be exposed to external devices. 14 (e.g. by muxing them to GPIO pins) 15 It's often possible to control duty-cycle of such clocks which makes them 16 suitable for generating PWM signal. 17 18allOf: 19 - $ref: pwm.yaml# 20 21properties: 22 compatible: 23 const: clk-pwm 24 25 clocks: 26 description: Clock used to generate the signal. 27 maxItems: 1 28 29 "#pwm-cells": 30 const: 2 31 32unevaluatedProperties: false 33 34required: 35 - compatible 36 - clocks 37 38examples: 39 - | 40 pwm { 41 compatible = "clk-pwm"; 42 #pwm-cells = <2>; 43 clocks = <&gcc 0>; 44 pinctrl-names = "default"; 45 pinctrl-0 = <&pwm_clk_flash_default>; 46 }; 47