Subject: Re: [PATCH V2 1/3] dt-bindings: timer: Convert i.MX GPT to json-schema

From: Rob Herring <[email-masked]>
Date: Thu, 28 May 2020 14:58:34 -0600

On Tue, May 19, 2020 at 11:55:45AM +0800, Anson Huang wrote:
> Convert the i.MX GPT binding to DT schema format using json-schema.
> 
> Signed-off-by: Anson Huang <[email-masked]>
> ---
> Changes since V1:
> 	- remove unnecessary compatible item descriptions;
> 	- remove unnecessary maxItems for clocks/clock-names;
> ---
>  .../devicetree/bindings/timer/fsl,imxgpt.txt       | 45 ------------
>  .../devicetree/bindings/timer/fsl,imxgpt.yaml      | 80 ++++++++++++++++++++++
>  2 files changed, 80 insertions(+), 45 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
>  create mode 100644 Documentation/devicetree/bindings/timer/fsl,imxgpt.yaml
> 
> diff --git a/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt b/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
> deleted file mode 100644
> index 5d8fd5b..0000000
> --- a/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
> +++ /dev/null
> @@ -1,45 +0,0 @@
> -Freescale i.MX General Purpose Timer (GPT)
> -
> -Required properties:
> -
> -- compatible : should be one of following:
> -  for i.MX1:
> -  - "fsl,imx1-gpt";
> -  for i.MX21:
> -  - "fsl,imx21-gpt";
> -  for i.MX27:
> -  - "fsl,imx27-gpt", "fsl,imx21-gpt";
> -  for i.MX31:
> -  - "fsl,imx31-gpt";
> -  for i.MX25:
> -  - "fsl,imx25-gpt", "fsl,imx31-gpt";
> -  for i.MX50:
> -  - "fsl,imx50-gpt", "fsl,imx31-gpt";
> -  for i.MX51:
> -  - "fsl,imx51-gpt", "fsl,imx31-gpt";
> -  for i.MX53:
> -  - "fsl,imx53-gpt", "fsl,imx31-gpt";
> -  for i.MX6Q:
> -  - "fsl,imx6q-gpt", "fsl,imx31-gpt";
> -  for i.MX6DL:
> -  - "fsl,imx6dl-gpt";
> -  for i.MX6SL:
> -  - "fsl,imx6sl-gpt", "fsl,imx6dl-gpt";
> -  for i.MX6SX:
> -  - "fsl,imx6sx-gpt", "fsl,imx6dl-gpt";
> -- reg : specifies base physical address and size of the registers.
> -- interrupts : should be the gpt interrupt.
> -- clocks : the clocks provided by the SoC to drive the timer, must contain
> -           an entry for each entry in clock-names.
> -- clock-names : must include "ipg" entry first, then "per" entry.
> -
> -Example:
> -
> -gpt1: timer@10003000 {
> -	compatible = "fsl,imx27-gpt", "fsl,imx21-gpt";
> -	reg = <0x10003000 0x1000>;
> -	interrupts = <26>;
> -	clocks = <&clks IMX27_CLK_GPT1_IPG_GATE>,
> -		 <&clks IMX27_CLK_PER1_GATE>;
> -	clock-names = "ipg", "per";
> -};
> diff --git a/Documentation/devicetree/bindings/timer/fsl,imxgpt.yaml b/Documentation/devicetree/bindings/timer/fsl,imxgpt.yaml
> new file mode 100644
> index 0000000..5479290
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/fsl,imxgpt.yaml
> @@ -0,0 +1,80 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/timer/fsl,imxgpt.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Freescale i.MX General Purpose Timer (GPT)
> +
> +maintainers:
> +  - Sascha Hauer <[email-masked]>
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - const: "fsl,imx1-gpt"
> +      - const: "fsl,imx21-gpt"
> +      - items:
> +          - const: "fsl,imx27-gpt"
> +          - const: "fsl,imx21-gpt"
> +      - const: "fsl,imx31-gpt"
> +      - items:
> +          - const: "fsl,imx25-gpt"
> +          - const: "fsl,imx31-gpt"
> +      - items:
> +          - const: "fsl,imx50-gpt"
> +          - const: "fsl,imx31-gpt"
> +      - items:
> +          - const: "fsl,imx51-gpt"
> +          - const: "fsl,imx31-gpt"
> +      - items:
> +          - const: "fsl,imx53-gpt"
> +          - const: "fsl,imx31-gpt"
> +      - items:
> +          - const: "fsl,imx6q-gpt"
> +          - const: "fsl,imx31-gpt"
> +      - const: "fsl,imx6dl-gpt"
> +      - items:
> +          - const: "fsl,imx6sl-gpt"
> +          - const: "fsl,imx6dl-gpt"
> +      - items:
> +          - const: "fsl,imx6sx-gpt"
> +          - const: "fsl,imx6dl-gpt"

Don't need quotes.

Group all the ones with the same fallback to a single 'items' list 
using enum for the first entry.

Rob

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