linux-kernel - Re: [PATCH 2/2] dt-bindings: update riscv plic claim-mask-support property

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Message-ID: <CAAhSdy29awBS7cATQjGvP1nqC_aYJgKvAQBxMxvhJAOK7VPr9A@mail.gmail.com>
Date:   Mon, 11 Oct 2021 20:22:25 +0530
From:   Anup Patel <anup@...infault.org>
To:     Guo Ren <guoren@...nel.org>
Cc:     Atish Patra <atish.patra@....com>, Marc Zyngier <maz@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Palmer Dabbelt <palmer@...belt.com>,
        "linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Guo Ren <guoren@...ux.alibaba.com>,
        Rob Herring <robh@...nel.org>,
        Palmer Dabbelt <palmerdabbelt@...gle.com>
Subject: Re: [PATCH 2/2] dt-bindings: update riscv plic claim-mask-support property

On Mon, Oct 11, 2021 at 6:54 PM <guoren@...nel.org> wrote:
>
> From: Guo Ren <guoren@...ux.alibaba.com>
>
> Add claim-mask-support to control riscv,plic don't call
> unnecessary mask/unmask operations.
>
> Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
> Cc: Rob Herring <robh@...nel.org>
> Cc: Palmer Dabbelt <palmerdabbelt@...gle.com>
> Cc: Anup Patel <anup@...infault.org>
> Cc: Atish Patra <atish.patra@....com>
> ---
>  .../bindings/interrupt-controller/sifive,plic-1.0.0.yaml        | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
> index 08d5a57ce00f..f32c1792604c 100644
> --- a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
> +++ b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
> @@ -71,6 +71,8 @@ properties:
>      description:
>        Specifies how many external interrupts are supported by this controller.
>
> +  claim-mask-support: true
> +

This DT property does not describe HW in any way, rather it enable/disable
a SW behaviour in the driver. IMO, this DT property should not be added.

Regards,
Anup

>  required:
>    - compatible
>    - '#address-cells'
> --
> 2.25.1
>