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

   1 # SPDX-License-Identifier: GPL-2.0
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/clock/pwm-clock.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: An external clock signal driven by a PWM pin.
   8
   9 maintainers:
  10   - Philipp Zabel <p.zabel@pengutronix.de>
  11
  12 properties:
  13   compatible:
  14     const: pwm-clock
  15
  16   '#clock-cells':
  17     const: 0
  18
  19   clock-frequency:
  20     description: Exact output frequency, in case the PWM period is not exact
  21       but was rounded to nanoseconds.
  22
  23   clock-output-names:
  24     maxItems: 1
  25
  26   pwms:
  27     maxItems: 1
  28
  29 required:
  30   - compatible
  31   - '#clock-cells'
  32   - pwms
  33
  34 additionalProperties: false
  35
  36 examples:
  37   - |
  38     clock {
  39         compatible = "pwm-clock";
  40         #clock-cells = <0>;
  41         clock-frequency = <25000000>;
  42         clock-output-names = "mipi_mclk";
  43         pwms = <&pwm2 0 40>; /* 1 / 40 ns = 25 MHz */
  44     };
  45 ...