linux-kernel - Re: [PATCH] dt-bindings: interrupt-controller: renesas,rzv2h-icu: Document RZ/V2N SoC support

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Message-ID: <CAMuHMdXKQc3kyT5e_juyMfWz64-oPHig840zAt5qrA+X8chYig@mail.gmail.com>
Date: Wed, 26 Nov 2025 12:22:42 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Prabhakar <prabhakar.csengg@...il.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Geert Uytterhoeven <geert+renesas@...der.be>, Magnus Damm <magnus.damm@...il.com>, 
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>, linux-kernel@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-renesas-soc@...r.kernel.org, 
	Biju Das <biju.das.jz@...renesas.com>, 
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH] dt-bindings: interrupt-controller: renesas,rzv2h-icu:
 Document RZ/V2N SoC support

Hi Prabhakar,

On Tue, 25 Nov 2025 at 22:32, Prabhakar <prabhakar.csengg@...il.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>
> Document the Interrupt Control Unit (ICU) on the Renesas RZ/V2N SoC,
> which is architecturally identical to the ICU used on the RZ/V2H(P)
> SoC.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Thanks for your patch!

> --- a/Documentation/devicetree/bindings/interrupt-controller/renesas,rzv2h-icu.yaml
> +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzv2h-icu.yaml
> @@ -20,9 +20,14 @@ description:
>
>  properties:
>    compatible:
> -    enum:
> -      - renesas,r9a09g047-icu # RZ/G3E
> -      - renesas,r9a09g057-icu # RZ/V2H(P)
> +    oneOf:
> +      - items:
> +          - enum:
> +              - renesas,r9a09g047-icu # RZ/G3E
> +              - renesas,r9a09g057-icu # RZ/V2H(P)
> +      - items:
> +          - const: renesas,r9a09g056-icu # RZ/V2N
> +          - const: renesas,r9a09g057-icu

Given ICU on RZ/V2H has lots of extra registers compared to RZ/V2N,
I think it would be better to drop the fallback.

>
>    '#interrupt-cells':
>      description: The first cell is the SPI number of the NMI or the

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