linux-kernel - Re: [PATCH] dt-bindings: timer: add #size-cells 2 for ARM

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Date:   Wed, 15 Dec 2021 19:10:57 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     David Heidelberg <david@...t.cz>
Cc:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <marc.zyngier@....com>,
        Mark Rutland <mark.rutland@....com>,
        Caleb Connolly <caleb@...nolly.tech>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        devicetree@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: timer: add #size-cells 2 for ARM

On Wed, Dec 15, 2021 at 8:45 AM David Heidelberg <david@...t.cz> wrote:
>
> It's already widely used by dt-schemas, so I blindly assume it's correct.
>
> Fixes warnings as:
> arch/arm64/boot/dts/qcom/sdm845-oneplus-fajita.dt.yaml: timer@...90000: #size-cells:0:0: 1 was expected
>         From schema: Documentation/devicetree/bindings/timer/arm,arch_timer_mmio.yaml

That's somewhat on purpose. There's no reason the timer needs >32-bits
of address or size. Sadly, QCom has ignored the warnings and just
copy-n-pasted the same thing over and over.

>
> Signed-off-by: David Heidelberg <david@...t.cz>
> ---
>  .../devicetree/bindings/timer/arm,arch_timer_mmio.yaml          | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/timer/arm,arch_timer_mmio.yaml b/Documentation/devicetree/bindings/timer/arm,arch_timer_mmio.yaml
> index cd2176cad53a..c061bb90b8e7 100644
> --- a/Documentation/devicetree/bindings/timer/arm,arch_timer_mmio.yaml
> +++ b/Documentation/devicetree/bindings/timer/arm,arch_timer_mmio.yaml
> @@ -30,7 +30,7 @@ properties:
>      enum: [1, 2]
>
>    '#size-cells':
> -    const: 1
> +    enum: [1, 2]
>
>    ranges: true
>
> --
> 2.34.1
>