Documentation/devicetree/bindings/pwm/clk-pwm.yaml

   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     };