linux-kernel - Re: [PATCH v2 1/2] dt-bindings: timer: sifive,clint: Fix number of interrupts

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Message-ID: <Ybuv8I1TW54i0NDm@robh.at.kernel.org>
Date:   Thu, 16 Dec 2021 15:30:24 -0600
From:   Rob Herring <robh@...nel.org>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        linux-riscv@...ts.infradead.org,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Palmer Dabbelt <palmer@...belt.com>,
        Anup Patel <anup.patel@....com>
Subject: Re: [PATCH v2 1/2] dt-bindings: timer: sifive,clint: Fix number of
 interrupts

On Thu, 16 Dec 2021 14:43:47 +0100, Geert Uytterhoeven wrote:
> The number of interrupts lacks an upper bound, thus assuming one,
> causing properly grouped "interrupts-extended" properties to be flagged
> as an error by "make dtbs_check".
> 
> Fix this by adding the missing "maxItems".  As the architectural maximum
> is 4095 interrupts, using that as the limit would be unpractical.  Hence
> limit it to 10 interrupts (two interrupts for a system management core,
> and two interrupts per core for other cores).  This should be sufficient
> for now, and the limit can always be increased when the need arises.
> 
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> ---
> v2:
>   - Split in two patches,
>   - Improve patch description and document limit rationale.
> ---
>  Documentation/devicetree/bindings/timer/sifive,clint.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring <robh@...nel.org>