linux-kernel - Re: [PATCH v2 1/3] dt-bindings: riscv: document cbom-block-size

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Date:   Thu, 12 May 2022 09:48:37 +0530
From:   Anup Patel <anup@...infault.org>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>,
        Wei Fu <wefu@...hat.com>, Guo Ren <guoren@...nel.org>,
        Atish Patra <atishp@...shpatra.org>,
        Nick Kossifidis <mick@....forth.gr>,
        Samuel Holland <samuel@...lland.org>,
        Christoph Muellner <cmuellner@...ux.com>,
        Philipp Tomsich <philipp.tomsich@...ll.eu>,
        Rob Herring <robh+dt@...nel.org>, krzk+dt@...nel.org,
        DTML <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 1/3] dt-bindings: riscv: document cbom-block-size

On Thu, May 12, 2022 at 3:11 AM Heiko Stuebner <heiko@...ech.de> wrote:
>
> The Zicbom operates on a block-size defined for the cpu-core,
> which does not necessarily match other cache-sizes used.
>
> So add the necessary property for the system to know the core's
> block-size.
>
> Signed-off-by: Heiko Stuebner <heiko@...ech.de>

Looks good to me.

Reviewed-by: Anup Patel <anup@...infault.org>

Regards,
Anup

> ---
>  Documentation/devicetree/bindings/riscv/cpus.yaml | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
> index d632ac76532e..b179bfd155a3 100644
> --- a/Documentation/devicetree/bindings/riscv/cpus.yaml
> +++ b/Documentation/devicetree/bindings/riscv/cpus.yaml
> @@ -63,6 +63,13 @@ properties:
>        - riscv,sv48
>        - riscv,none
>
> +  riscv,cbom-block-size:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      Blocksize in bytes for the Zicbom cache operations. The block
> +      size is a property of the core itself and does not necessarily
> +      match other software defined cache sizes.
> +
>    riscv,isa:
>      description:
>        Identifies the specific RISC-V instruction set architecture
> --
> 2.35.1
>