linux-kernel - Re: [PATCH v3 2/2] dt-bindings: thermal: rcar-gen3-thermal: Add r8a779f0 support

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Message-ID: <CAMuHMdW3uxQHk6SBX5MqnZsYqwY8p+0wmD6gHwS3ESUrkmpWkQ@mail.gmail.com>
Date:   Tue, 14 Jun 2022 15:54:03 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Niklas Söderlund <niklas.soderlund@...natech.se>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Linux PM list <linux-pm@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/2] dt-bindings: thermal: rcar-gen3-thermal: Add
 r8a779f0 support

Hi Wolfram,

On Fri, Jun 10, 2022 at 10:17 PM Wolfram Sang
<wsa+renesas@...g-engineering.com> wrote:
> Add support for R-Car S4. The S4 IP differs a bit from its siblings in
> such way that it has 3 out of 4 TSC nodes for Linux and the interrupts
> are not routed to the INTC-AP but to the ECM.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
> ---
>
> Change since V2:
> * make interrupts not required for this SoC

Thanks for the update!

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

> --- a/Documentation/devicetree/bindings/thermal/rcar-gen3-thermal.yaml
> +++ b/Documentation/devicetree/bindings/thermal/rcar-gen3-thermal.yaml

> @@ -79,8 +80,16 @@ else:
>          - description: TSC1 registers
>          - description: TSC2 registers
>          - description: TSC3 registers
> -  required:
> -    - interrupts
> +  if:
> +    not:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - renesas,r8a779f0-thermal
> +  then:
> +    required:
> +      - interrupts

While correct, IMHO adding this check here loses again the improvement
made by "[PATCH v3 1/2] dt-bindings: thermal: rcar-gen3-thermal: use
positive logic".

What about splitting this in two separate checks at the top level:
  - one for regs (R-Car V3U vs. the world), and
  - a second for interrupts (R-Car V3U+S4-8 vs. the world)?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds