linux-kernel - Re: [PATCH 1/3] dt-bindings: sifive-ccache: rename SiFive L2 cache to composible cache

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Date:   Mon, 29 Aug 2022 06:45:06 +0000
From:   <Conor.Dooley@...rochip.com>
To:     <zong.li@...ive.com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <palmer@...belt.com>,
        <paul.walmsley@...ive.com>, <aou@...s.berkeley.edu>,
        <greentime.hu@...ive.com>, <devicetree@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] dt-bindings: sifive-ccache: rename SiFive L2 cache to
 composible cache

Hey Zong,
Couple quick comments for you:

On 29/08/2022 07:22, Zong Li wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Since composible cache may be L3 cache if private L2 cache exists, it

s/composible/composable

> should use its original name composible cache to prevent confusion.

s/composible/composable

> 
> Signed-off-by: Greentime Hu <greentime.hu@...ive.com>
> Signed-off-by: Zong Li <zong.li@...ive.com>
> ---
>   .../riscv/{sifive-l2-cache.yaml => sifive-ccache.yaml}      | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)
>   rename Documentation/devicetree/bindings/riscv/{sifive-l2-cache.yaml => sifive-ccache.yaml} (92%)
> 
> diff --git a/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml b/Documentation/devicetree/bindings/riscv/sifive-ccache.yaml
> similarity index 92%
> rename from Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml
> rename to Documentation/devicetree/bindings/riscv/sifive-ccache.yaml
> index 69cdab18d629..1a64a5384e36 100644
> --- a/Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml
> +++ b/Documentation/devicetree/bindings/riscv/sifive-ccache.yaml

Binding filenames are supposed to match the first compatible. Since
it was not named that way in the first place, I suppose naming after
the generic compatible makes the most sense. The correct filename
would then be "sifive,ccache0.yaml"

> @@ -12,8 +12,8 @@ maintainers:
>     - Paul Walmsley  <paul.walmsley@...ive.com>
> 
>   description:
> -  The SiFive Level 2 Cache Controller is used to provide access to fast copies
> -  of memory for masters in a Core Complex. The Level 2 Cache Controller also
> +  The SiFive Composable Cache Controller is used to provide access to fast copies
> +  of memory for masters in a Core Complex. The Composable Cache Controller also
>     acts as directory-based coherency manager.
>     All the properties in ePAPR/DeviceTree specification applies for this platform.
> 
> @@ -27,6 +27,7 @@ select:
>           enum:
>             - sifive,fu540-c000-ccache
>             - sifive,fu740-c000-ccache
> +          - sifive,ccache0

Despite what the commit message says, this is more than a rename.
Thanks,
Conor.

> 
>     required:
>       - compatible
> @@ -37,6 +38,7 @@ properties:
>         - enum:
>             - sifive,fu540-c000-ccache
>             - sifive,fu740-c000-ccache
> +          - sifive,ccache0
>         - const: cache
> 
>     cache-block-size:
> --
> 2.17.1
>