linux-kernel - Re: [PATCH V4 2/5] dt-bindings: clock: Convert i.MX6SX clock to json-schema

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Date:   Tue, 12 May 2020 09:55:39 -0500
From:   Rob Herring <robh@...nel.org>
To:     Anson Huang <Anson.Huang@....com>
Cc:     mturquette@...libre.com, sboyd@...nel.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Linux-imx@....com
Subject: Re: [PATCH V4 2/5] dt-bindings: clock: Convert i.MX6SX clock to
 json-schema

On Thu, Apr 30, 2020 at 08:51:58AM +0800, Anson Huang wrote:
> Convert the i.MX6SX clock binding to DT schema format using json-schema.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> ---
> Changes since V3:
> 	- update license to be with (GPL-2.0-only OR BSD-2-Clause);
> 	- remove unnecessary minItem for interrupts;
> 	- remove label in example.
> ---
>  .../devicetree/bindings/clock/imx6sx-clock.txt     | 13 -----
>  .../devicetree/bindings/clock/imx6sx-clock.yaml    | 64 ++++++++++++++++++++++
>  2 files changed, 64 insertions(+), 13 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/clock/imx6sx-clock.txt
>  create mode 100644 Documentation/devicetree/bindings/clock/imx6sx-clock.yaml
> 
> diff --git a/Documentation/devicetree/bindings/clock/imx6sx-clock.txt b/Documentation/devicetree/bindings/clock/imx6sx-clock.txt
> deleted file mode 100644
> index 22362b9..0000000
> --- a/Documentation/devicetree/bindings/clock/imx6sx-clock.txt
> +++ /dev/null
> @@ -1,13 +0,0 @@
> -* Clock bindings for Freescale i.MX6 SoloX
> -
> -Required properties:
> -- compatible: Should be "fsl,imx6sx-ccm"
> -- reg: Address and length of the register set
> -- #clock-cells: Should be <1>
> -- clocks: list of clock specifiers, must contain an entry for each required
> -  entry in clock-names
> -- clock-names: should include entries "ckil", "osc", "ipp_di0" and "ipp_di1"
> -
> -The clock consumer should specify the desired clock by having the clock
> -ID in its "clocks" phandle cell.  See include/dt-bindings/clock/imx6sx-clock.h
> -for the full list of i.MX6 SoloX clock IDs.
> diff --git a/Documentation/devicetree/bindings/clock/imx6sx-clock.yaml b/Documentation/devicetree/bindings/clock/imx6sx-clock.yaml
> new file mode 100644
> index 0000000..2c7f625
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/imx6sx-clock.yaml
> @@ -0,0 +1,64 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/imx6sx-clock.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Clock bindings for Freescale i.MX6 SoloX
> +
> +maintainers:
> +  - Anson Huang <Anson.Huang@....com>
> +
> +properties:
> +  compatible:
> +    const: fsl,imx6sx-ccm
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 2

Need to define what each one is:

interrupts:
  items:
    - description: ...
    - description: ...

And you should explain why this was added.

> +
> +  '#clock-cells':
> +    const: 1
> +
> +  clocks:
> +    items:
> +      - description: 32k osc
> +      - description: 24m osc
> +      - description: ipp_di0 clock input
> +      - description: ipp_di1 clock input
> +      - description: anaclk1 clock input
> +      - description: anaclk2 clock input
> +
> +  clock-names:
> +    items:
> +      - const: ckil
> +      - const: osc
> +      - const: ipp_di0
> +      - const: ipp_di1
> +      - const: anaclk1
> +      - const: anaclk2
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - '#clock-cells'
> +  - clocks
> +  - clock-names
> +
> +examples:
> +  # Clock Control Module node:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +    clock-controller@...4000 {
> +        compatible = "fsl,imx6sx-ccm";
> +        reg = <0x020c4000 0x4000>;
> +        interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>,
> +                     <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>;
> +        #clock-cells = <1>;
> +        clocks = <&ckil>, <&osc>, <&ipp_di0>, <&ipp_di1>, <&anaclk1>, <&anaclk2>;
> +        clock-names = "ckil", "osc", "ipp_di0", "ipp_di1", "anaclk1", "anaclk2";
> +    };
> -- 
> 2.7.4
>