linux-kernel - Re: [PATCH 28/43] dt-bindings: rtc: Add DT binding m48t86 rtc

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Message-ID: <2023042416400019687ab8@mail.local>
Date:   Mon, 24 Apr 2023 18:40:00 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Nikita Shubin <nikita.shubin@...uefel.me>,
        Arnd Bergmann <arnd@...nel.org>,
        Linus Walleij <linusw@...nel.org>,
        Alexander Sverdlin <alexander.sverdlin@...il.com>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-rtc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 28/43] dt-bindings: rtc: Add DT binding m48t86 rtc

On 24/04/2023 11:25:48-0500, Rob Herring wrote:
> On Mon, Apr 24, 2023 at 03:34:44PM +0300, Nikita Shubin wrote:
> > Add YAML bindings for ST M48T86 / Dallas DS12887 RTC.
> > 
> > Signed-off-by: Nikita Shubin <nikita.shubin@...uefel.me>
> > ---
> >  .../bindings/rtc/dallas,rtc-m48t86.yaml       | 33 +++++++++++++++++++
> >  1 file changed, 33 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/rtc/dallas,rtc-m48t86.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/rtc/dallas,rtc-m48t86.yaml b/Documentation/devicetree/bindings/rtc/dallas,rtc-m48t86.yaml
> > new file mode 100644
> > index 000000000000..51f98bdbc385
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/rtc/dallas,rtc-m48t86.yaml
> > @@ -0,0 +1,33 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/rtc/dallas,rtc-m48t86.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: ST M48T86 / Dallas DS12887 RTC bindings
> > +
> > +maintainers:
> > +  - Alessandro Zummo <a.zummo@...ertech.it>
> > +
> > +properties:
> > +  compatible:
> > +    const: dallas,rtc-m48t86
> 
> 'rtc-' is redundant. And haven't you mixed up the vendor and part 
> number? It should be dallas,ds12887 and/or st,m48t86?
> 
> This can probably go in the trivial rtc binding.
> 

I was wonderign, is this trivial, even with two regs?

> > +
> > +  reg:
> > +    maxItems: 2
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    rtc1: rtc@...00000 {
> 
> Drop unused labels.
> 
> > +        compatible = "dallas,rtc-m48t86";
> > +        reg = <0x10800000 0x1>, <0x11700000 0x1>;
> > +    };
> > +
> > +...
> > +
> > -- 
> > 2.39.2
> > 

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com