linux-kernel - Re: [PATCH 2/5] dt-bindings: soc: sophgo: Add Sophgo syscon module

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Date:   Thu, 16 Nov 2023 12:13:11 -0600
From:   Rob Herring <robh@...nel.org>
To:     Conor Dooley <conor@...nel.org>, Chen Wang <unicornxw@...il.com>
Cc:     aou@...s.berkeley.edu, chao.wei@...hgo.com,
        krzysztof.kozlowski+dt@...aro.org, mturquette@...libre.com,
        palmer@...belt.com, paul.walmsley@...ive.com,
        richardcochran@...il.com, sboyd@...nel.org,
        devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        haijiao.liu@...hgo.com, xiaoguang.xing@...hgo.com,
        Chen Wang <unicorn_wang@...look.com>
Subject: Re: [PATCH 2/5] dt-bindings: soc: sophgo: Add Sophgo syscon module

On Tue, Nov 14, 2023 at 05:40:20PM +0000, Conor Dooley wrote:
> On Mon, Nov 13, 2023 at 09:19:02PM +0800, Chen Wang wrote:
> > From: Chen Wang <unicorn_wang@...look.com>
> > 
> > Add documentation to describe Sophgo System Controller Registers for
> > SG2042.
> > 
> > Signed-off-by: Chen Wang <unicorn_wang@...look.com>
> > ---
> >  .../soc/sophgo/sophgo,sg2042-syscon.yaml      | 38 +++++++++++++++++++
> >  1 file changed, 38 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-syscon.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-syscon.yaml b/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-syscon.yaml
> > new file mode 100644
> > index 000000000000..829abede4fd5
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-syscon.yaml
> > @@ -0,0 +1,38 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/soc/sophgo/sophgo,sg2042-syscon.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Sophgo SG2042 SoC system controller
> > +
> > +maintainers:
> > +  - Chen Wang <unicorn_wang@...look.com>
> > +
> > +description:
> > +  The Sophgo SG2042 SoC system controller provides register information such
> > +  as offset, mask and shift to configure related modules.
> > +
> > +properties:
> > +  compatible:
> > +    oneOf:
> > +      - items:
> > +          - enum:
> > +              - sophgo,sg2042-syscon
> > +          - const: syscon
> 
> THere's only one option here, so the oneOf should be removed. Similarly,
> since there's only one SoC, and it sounds like the next large sophgo
> system is going to be using an entirely different core provider, I think
> should just simplify this to a pair of "const:" entries.

For a simple syscon binding like this, you can just add the compatible 
to syscon.yaml.

Rob