0001 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/pwm/clk-pwm.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Clock based PWM controller
0008
0009 maintainers:
0010 - Nikita Travkin <nikita@trvn.ru>
0011
0012 description: |
0013 Some systems have clocks that can be exposed to external devices.
0014 (e.g. by muxing them to GPIO pins)
0015 It's often possible to control duty-cycle of such clocks which makes them
0016 suitable for generating PWM signal.
0017
0018 allOf:
0019 - $ref: pwm.yaml#
0020
0021 properties:
0022 compatible:
0023 const: clk-pwm
0024
0025 clocks:
0026 description: Clock used to generate the signal.
0027 maxItems: 1
0028
0029 "#pwm-cells":
0030 const: 2
0031
0032 unevaluatedProperties: false
0033
0034 required:
0035 - compatible
0036 - clocks
0037
0038 examples:
0039 - |
0040 pwm {
0041 compatible = "clk-pwm";
0042 #pwm-cells = <2>;
0043 clocks = <&gcc 0>;
0044 pinctrl-names = "default";
0045 pinctrl-0 = <&pwm_clk_flash_default>;
0046 };
