Commit f1ea9703 authored by Anson Huang's avatar Anson Huang Committed by Rob Herring
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dt-bindings: pwm: Convert imx pwm to json-schema 



Convert the imx pwm binding to DT schema format using json-schema.

Signed-off-by: default avatarAnson Huang <Anson.Huang@nxp.com>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent abc9e16f

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

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Freescale i.MX PWM controller



Required properties:

- compatible : should be "fsl,<soc>-pwm" and one of the following

   compatible strings:

  - "fsl,imx1-pwm" for PWM compatible with the one integrated on i.MX1

  - "fsl,imx27-pwm" for PWM compatible with the one integrated on i.MX27

- reg: physical base address and length of the controller's registers

- #pwm-cells: 2 for i.MX1 and 3 for i.MX27 and newer SoCs. See pwm.yaml

  in this directory for a description of the cells format.

- clocks : Clock specifiers for both ipg and per clocks.

- clock-names : Clock names should include both "ipg" and "per"

See the clock consumer binding,

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

- interrupts: The interrupt for the pwm controller



Example:



pwm1: pwm@53fb4000 {

	#pwm-cells = <3>;

	compatible = "fsl,imx53-pwm", "fsl,imx27-pwm";

	reg = <0x53fb4000 0x4000>;

	clocks = <&clks IMX5_CLK_PWM1_IPG_GATE>,

		 <&clks IMX5_CLK_PWM1_HF_GATE>;

	clock-names = "ipg", "per";

	interrupts = <61>;

};

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

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

%YAML 1.2

---

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

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



title: Freescale i.MX PWM controller



maintainers:

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



properties:

  "#pwm-cells":

    description: |

      Should be 2 for i.MX1 and 3 for i.MX27 and newer SoCs. See pwm.yaml

      in this directory for a description of the cells format.

    enum:

      - 2

      - 3



  compatible:

    enum:

      - fsl,imx1-pwm

      - fsl,imx27-pwm



  reg:

    maxItems: 1



  clocks:

    items:

      - description: SoC PWM ipg clock

      - description: SoC PWM per clock

    maxItems: 2



  clock-names:

    items:

      - const: ipg

      - const: per

    maxItems: 2



  interrupts:

    maxItems: 1



required:

  - "#pwm-cells"

  - compatible

  - reg

  - clocks

  - clock-names

  - interrupts



additionalProperties: false



examples:

  - |

    #include <dt-bindings/clock/imx5-clock.h>



    pwm@53fb4000 {

        #pwm-cells = <3>;

        compatible = "fsl,imx27-pwm";

        reg = <0x53fb4000 0x4000>;

        clocks = <&clks IMX5_CLK_PWM1_IPG_GATE>,

                 <&clks IMX5_CLK_PWM1_HF_GATE>;

        clock-names = "ipg", "per";

        interrupts = <61>;

    };