linux-kernel - Re: [PATCH 1/2 v7] dt-bindings: watchdog: marvell GTI system watchdog driver

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Date:   Tue, 9 May 2023 08:53:08 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Bharat Bhushan <bbhushan2@...vell.com>, wim@...ux-watchdog.org,
        linux@...ck-us.net, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-watchdog@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        sgoutham@...vell.com
Subject: Re: [PATCH 1/2 v7] dt-bindings: watchdog: marvell GTI system watchdog
 driver

On 08/05/2023 15:15, Bharat Bhushan wrote:
> Add binding documentation for the Marvell GTI system
> watchdog driver.
> 
> Signed-off-by: Bharat Bhushan <bbhushan2@...vell.com>
> ---
> v7:
>  - Corrected compatible to have soc name
>  - Converted marvell,wdt-timer-index to optional
> 
>  .../watchdog/marvell,octeontx2-wdt.yaml       | 80 +++++++++++++++++++
>  1 file changed, 80 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/watchdog/marvell,octeontx2-wdt.yaml
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/marvell,octeontx2-wdt.yaml b/Documentation/devicetree/bindings/watchdog/marvell,octeontx2-wdt.yaml
> new file mode 100644
> index 000000000000..72951b10f1f3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/watchdog/marvell,octeontx2-wdt.yaml
> @@ -0,0 +1,80 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/watchdog/marvell,octeontx2-wdt.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Marvell Global Timer (GTI) system watchdog
> +
> +allOf:
> +  - $ref: watchdog.yaml#

Put allOf after maintainers:.

> +
> +maintainers:
> +  - Bharat Bhushan <bbhushan2@...vell.com>
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - const: marvell,octeontx2-wdt

Why is this alone? Judging by the enum below, octeontx2 is not specific.

> +      - items:
> +          - enum:
> +              - marvell,octeontx2-95xx-wdt
> +              - marvell,octeontx2-96xx-wdt
> +              - marvell,octeontx2-98xx-wdt

We don't allow wildcards in general

> +          - const: marvell,octeontx2-wdt
> +      - const: marvell,cn10k-wdt

Same question - why is this alone?

Second question - it should be rather part of enum with the first one if
accepted.

> +      - items:
> +          - enum:
> +              - marvell,cn10kx-wdt
> +              - marvell,cnf10kx-wdt
> +          - const: marvell,cn10k-wdt
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    minItems: 1

maxItems instead. You see it is different than above properties?

> +
> +  clock-names:
> +    minItems: 1

Need to define names.

Best regards,
Krzysztof