Re: [RFC PATCH v2 1/2] dt-bindings: soc: renesas: r9a07g043f-l2-cache: Add DT binding documentation for L2 cache controller

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Hi Geert,

Thank you for the review.

On Tue, Oct 4, 2022 at 7:42 AM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
>
> Hi Prabhakar,
>
> On Tue, Oct 4, 2022 at 12:32 AM Prabhakar <prabhakar.csengg@xxxxxxxxx> wrote:
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> >
> > Add DT binding documentation for L2 cache controller found on RZ/Five SoC.
> >
> > The Renesas RZ/Five microprocessor includes a RISC-V CPU Core (AX45MP
> > Single) from Andes. The AX45MP core has an L2 cache controller, this patch
> > describes the L2 cache block.
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>
> Thanks for your patch!
>
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/soc/renesas/r9a07g043f-l2-cache.yaml
>
> Not andestech,ax45mp-cache.yaml?
>
I wasn't sure as we were including this in soc/renesas so named it as
r9a07g043f-l2-cache.yaml if there are no issues I'll rename it
andestech,ax45mp-cache.yaml.

> > @@ -0,0 +1,82 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +# Copyright (C) 2022 Renesas Electronics Corp.
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/soc/renesas/r9a07g043f-l2-cache.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: SiFive L2 Cache Controller
>
> Andestech AX45MP?
>
Ouch!

> > +
> > +maintainers:
> > +  - Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> > +
> > +description:
> > +  A level-2 cache (L2C) is used to improve the system performance by providing
> > +  a larger amount of cache line entries and reasonable access delays. The L2C
> > +  is shared between cores, and a non-inclusive non-exclusive policy is used.
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - const: andestech,ax45mp-cache
> > +      - const: cache
>
> This makes the schema apply to any node which is compatible with
> "cache", cfr. the report from Rob's bot.
>
Actually dt_binding_check didn't complain when I ran it locally (maybe
it's time to update dt-schema).

> You need a select block to avoid that, cfr.
> Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml.
>
Thanks for the pointer.

Cheers,
Prabhakar



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