linux-kernel - Re: [PATCH v3 06/10] dt-bindings: watchdog: Add HPE GXP Watchdog timer binding

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Date:   Fri, 11 Mar 2022 10:34:14 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     nick.hawkins@....com, verdun@....com
Cc:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 06/10] dt-bindings: watchdog: Add HPE GXP Watchdog
 timer binding

On 10/03/2022 20:52, nick.hawkins@....com wrote:
> From: Nick Hawkins <nick.hawkins@....com>
> 
> Add the hpe gxp watchdog timer binding hpe,gxp-wdt.
> This will enable support for the HPE GXP Watchdog
> 
> Signed-off-by: Nick Hawkins <nick.hawkins@....com>
> ---
>  .../bindings/watchdog/hpe,gxp-wdt.yaml        | 37 +++++++++++++++++++
>  1 file changed, 37 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.yaml
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.yaml b/Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.yaml
> new file mode 100644
> index 000000000000..6044496b4968
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/watchdog/hpe,gxp-wdt.yaml
> @@ -0,0 +1,37 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/watchdog/hpe,gxp-wdt.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: HPE GXP Controlled Watchdog
> +
> +allOf:
> +  - $ref: "watchdog.yaml#"
> +
> +maintainers:
> +  - Nick Hawkins <nick.hawkins@....com>
> +  - Jean-Marie Verdun <verdun@....com>
> +
> +properties:
> +  compatible:
> +    const: hpe,gxp-wdt
> +
> +  reg:
> +    items:
> +      - description: WDGRST register
> +      - description: WDGCS register

Why are you mapping each register instead of entire address space? It
won't scale if your new design comes with 10 registers...

> +
> +required:
> +  - compatible
> +  - reg
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    watchdog0:  watchdog@...00090 {

Skip the label. You also have there double space between label and node
name.

Best regards,
Krzysztof