Commit 6a1cb5b7 authored by Rob Herring's avatar Rob Herring
Browse files

dt-bindings: clock: Convert pwm-clock to DT schema 



Convert the pwm-clock binding to DT schema format. A straight-forward
conversion.

Reviewed-by: default avatarStephen Boyd <sboyd@kernel.org>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221011162919.3025038-1-robh@kernel.org


Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 63deeba6

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

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Binding for an external clock signal driven by a PWM pin.



This binding uses the common clock binding[1] and the common PWM binding[2].



[1] Documentation/devicetree/bindings/clock/clock-bindings.txt

[2] Documentation/devicetree/bindings/pwm/pwm.txt



Required properties:

- compatible : shall be "pwm-clock".

- #clock-cells : from common clock binding; shall be set to 0.

- pwms : from common PWM binding; this determines the clock frequency

  via the period given in the PWM specifier.



Optional properties:

- clock-output-names : From common clock binding.

- clock-frequency : Exact output frequency, in case the PWM period

  is not exact but was rounded to nanoseconds.



Example:

	clock {

		compatible = "pwm-clock";

		#clock-cells = <0>;

		clock-frequency = <25000000>;

		clock-output-names = "mipi_mclk";

		pwms = <&pwm2 0 40>; /* 1 / 40 ns = 25 MHz */

	};

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

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# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/clock/pwm-clock.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: An external clock signal driven by a PWM pin.



maintainers:

  - Philipp Zabel <p.zabel@pengutronix.de>



properties:

  compatible:

    const: pwm-clock



  '#clock-cells':

    const: 0



  clock-frequency:

    description: Exact output frequency, in case the PWM period is not exact

      but was rounded to nanoseconds.



  clock-output-names:

    maxItems: 1



  pwms:

    maxItems: 1



required:

  - compatible

  - '#clock-cells'

  - pwms



additionalProperties: false



examples:

  - |

    clock {

        compatible = "pwm-clock";

        #clock-cells = <0>;

        clock-frequency = <25000000>;

        clock-output-names = "mipi_mclk";

        pwms = <&pwm2 0 40>; /* 1 / 40 ns = 25 MHz */

    };

...