linux-kernel - Re: [PATCH v2 1/2] dt-bindings:pwm:Add bindings doc for Sunplus SoC PWM Driver

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Date:   Mon, 7 Mar 2022 12:18:56 +0800
From:   hammer hsieh <hammerh0314@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Cc:     thierry.reding@...il.com,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, lee.jones@...aro.org,
        robh+dt@...nel.org, linux-pwm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        wells.lu@...plus.com, "hammer.hsieh" <hammer.hsieh@...plus.com>
Subject: Re: [PATCH v2 1/2] dt-bindings:pwm:Add bindings doc for Sunplus SoC
 PWM Driver

Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com> 於 2022年3月4日 週五
下午11:01寫道：
>
> On 04/03/2022 07:20, Hammer Hsieh wrote:
> > Add bindings doc for Sunplus SoC PWM Driver
>
> You miss spaces in the subject.
>

ok, will modify it.

> >
> > Signed-off-by: Hammer Hsieh <hammerh0314@...il.com>
> > ---
> > Changes in v2:
> >  - Addressed all comments from Rob Herring.
> >    modify author's mail match Signed-off-by.
> >  - rebase kernel to 5.17 rc5
> >
> >  .../devicetree/bindings/pwm/pwm-sunplus.yaml       | 40 ++++++++++++++++++++++
> >  MAINTAINERS                                        |  5 +++
> >  2 files changed, 45 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/pwm/pwm-sunplus.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/pwm/pwm-sunplus.yaml b/Documentation/devicetree/bindings/pwm/pwm-sunplus.yaml
> > new file mode 100644
> > index 0000000..19fe5d5
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/pwm/pwm-sunplus.yaml
> > @@ -0,0 +1,40 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +# Copyright (C) Sunplus Co., Ltd. 2021
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/pwm/pwm-sunplus.yaml#
>
> Is it going to be one binding for all Sunplus SoCs? Existing and future?
>

yes, that was my first plan.
but not all sunplus SoCs use the same IP-based,
so I will change file name form 'pwm-sunplus.yaml' to
'sunplus,sp7021-pwm.yaml' in  next patch.

> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Sunplus SoC PWM Controller
> > +
> > +maintainers:
> > +  - Hammer Hsieh <hammerh0314@...il.com>
> > +
>
> allOf with pwm.yaml
> Then unevaluatedProperties instead of additionalProperties.
>

ok , will add it.

>
> > +properties:
> > +  '#pwm-cells':
> > +    const: 2
> > +
> > +  compatible:
>
> Commpatible goes first. Rest of properties you could order
> alphabetically. Similar approach in required.
>
>

ok, will modify it.

> > +    items:
> > +      - const: sunplus,sp7021-pwm
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    maxItems: 1
> > +
> > +required:
>
> compatible
>
> > +  - reg
> > +  - clocks
>
>
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    pwm: pwm@...07a00 {
> > +      #pwm-cells = <2>;
> > +      compatible = "sunplus,sp7021-pwm";
>
> compatible goes first, then reg.
>

ok, will modify it.

>
> Best regards,
> Krzysztof