linux-kernel - Re: [PATCH V2 1/2] dt-bindings: watchdog: Convert i.MX to json-schema

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Date:   Mon, 20 Apr 2020 16:29:10 -0500
From:   Rob Herring <robh@...nel.org>
To:     Anson Huang <Anson.Huang@....com>
Cc:     wim@...ux-watchdog.org, linux@...ck-us.net, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Linux-imx@....com
Subject: Re: [PATCH V2 1/2] dt-bindings: watchdog: Convert i.MX to json-schema

On Wed, Apr 15, 2020 at 08:40:10AM +0800, Anson Huang wrote:
> Convert the i.MX watchdog binding to DT schema format using json-schema.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> ---
> No change.
> ---
>  .../devicetree/bindings/watchdog/fsl-imx-wdt.txt   | 24 ----------
>  .../devicetree/bindings/watchdog/fsl-imx-wdt.yaml  | 56 ++++++++++++++++++++++
>  2 files changed, 56 insertions(+), 24 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.txt
>  create mode 100644 Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.txt b/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.txt
> deleted file mode 100644
> index adc6b76..0000000
> --- a/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.txt
> +++ /dev/null
> @@ -1,24 +0,0 @@
> -* Freescale i.MX Watchdog Timer (WDT) Controller
> -
> -Required properties:
> -- compatible : Should be "fsl,<soc>-wdt"
> -- reg : Should contain WDT registers location and length
> -- interrupts : Should contain WDT interrupt
> -
> -Optional properties:
> -- big-endian: If present the watchdog device's registers are implemented
> -  in big endian mode, otherwise in native mode(same with CPU), for more
> -  detail please see: Documentation/devicetree/bindings/regmap/regmap.txt.
> -- fsl,ext-reset-output: If present the watchdog device is configured to
> -  assert its external reset (WDOG_B) instead of issuing a software reset.
> -- timeout-sec : Contains the watchdog timeout in seconds
> -
> -Examples:
> -
> -wdt@...98000 {
> -	compatible = "fsl,imx51-wdt", "fsl,imx21-wdt";
> -	reg = <0x73f98000 0x4000>;
> -	interrupts = <58>;
> -	big-endian;
> -	timeout-sec = <20>;
> -};
> diff --git a/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml b/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml
> new file mode 100644
> index 0000000..674d902
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/watchdog/fsl-imx-wdt.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Freescale i.MX Watchdog Timer (WDT) Controller
> +
> +maintainers:
> +  - Anson Huang <Anson.Huang@....com>
> +
> +allOf:
> +  - $ref: "watchdog.yaml#"
> +
> +properties:
> +  compatible:
> +    enum:
> +      - fsl,imx21-wdt
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    description: |
> +      Watchdog's clock source.

Drop this. No description needed if single entry.

> +    maxItems: 1
> +
> +  fsl,ext-reset-output:
> +    $ref: /schemas/types.yaml#/definitions/flag
> +    description: |
> +      If present, the watchdog device is configured to assert its
> +      external reset (WDOG_B) instead of issuing a software reset.
> +
> +required:
> +  - compatible
> +  - interrupts
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/clock/imx6qdl-clock.h>
> +
> +    wdog1: watchdog@...c000 {

Drop the unused label.

> +        compatible = "fsl,imx21-wdt";
> +        reg = <0x020bc000 0x4000>;
> +        interrupts = <0 80 IRQ_TYPE_LEVEL_HIGH>;
> +        clocks = <&clks IMX6QDL_CLK_IPG>;
> +    };
> +
> +...
> -- 
> 2.7.4
>