| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | |
| 7 | title: Clock based PWM controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Nikita Travkin <nikita@trvn.ru> |
| 11 | |
| 12 | description: | |
| 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 | |
| 18 | allOf: |
| 19 | - $ref: pwm.yaml# |
| 20 | |
| 21 | properties: |
| 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 | |
| 32 | unevaluatedProperties: false |
| 33 | |
| 34 | required: |
| 35 | - compatible |
| 36 | - clocks |
| 37 | |
| 38 | examples: |
| 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 | }; |