Commit d1dd2167 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Rob Herring
Browse files

dt-bindings: timer: renesas,tpu: Convert to json-schema 



Convert the Renesas H8/300 Timer Pulse Unit Device Tree binding
documentation to json-schema.

Correct clock-names, as "peripheral_clk" is the name of the supplier,
and all users use "fck".

Note that there are two different bindings for the TPU, both using
"renesas,tpu": this one for using the TPU as a clock source (used on
H8/300), and a second use for using the TPU as a PWM controller (used on
ARM).  To avoid conflicts, both bindings are marked with the appropriate
"select" logic, to check for the absence respectively presence of the
"#pwm-cells" property.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Acked-by: default avatarYoshinori Sato <ysato@users.sourceforge.jp>
Link: https://lore.kernel.org/r/1c33e62c3a74979c3ca9580176e6cf89384caea9.1620648868.git.geert+renesas@glider.be


Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent d91133ed

Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml

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@@ -9,6 +9,15 @@ title: Renesas R-Car Timer Pulse Unit PWM Controller 
maintainers:

  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>



select:

  properties:

    compatible:

      contains:

        const: renesas,tpu

  required:

    - compatible

    - '#pwm-cells'



properties:

  compatible:

    items:

Documentation/devicetree/bindings/timer/renesas,tpu.txt

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* Renesas H8/300 Timer Pulse Unit



The TPU is a 16bit timer/counter with configurable clock inputs and

programmable compare match.

This implementation support only cascade mode.



Required Properties:



  - compatible: must contain "renesas,tpu"

  - reg: base address and length of the registers block in 2 channel.

  - clocks: a list of phandle, one for each entry in clock-names.

  - clock-names: must contain "peripheral_clk" for the functional clock.





Example:

	tpu: tpu@ffffe0 {

		compatible = "renesas,tpu";

		reg = <0xffffe0 16>, <0xfffff0 12>;

		clocks = <&pclk>;

		clock-names = "peripheral_clk";

	};

Documentation/devicetree/bindings/timer/renesas,tpu.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/timer/renesas,tpu.yaml#

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



title: Renesas H8/300 Timer Pulse Unit



maintainers:

  - Yoshinori Sato <ysato@users.sourceforge.jp>



description:

  The TPU is a 16bit timer/counter with configurable clock inputs and

  programmable compare match.

  This implementation supports only cascade mode.



select:

  properties:

    compatible:

      contains:

        const: renesas,tpu

    '#pwm-cells': false

  required:

    - compatible



properties:

  compatible:

    const: renesas,tpu



  reg:

    items:

      - description: First channel

      - description: Second channel



  clocks:

    maxItems: 1



  clock-names:

    const: fck



required:

  - compatible

  - reg

  - clocks

  - clock-names



additionalProperties: false



examples:

  - |

    tpu: tpu@ffffe0 {

            compatible = "renesas,tpu";

            reg = <0xffffe0 16>, <0xfffff0 12>;

            clocks = <&pclk>;

            clock-names = "fck";

    };