linux-kernel - Re: [PATCH 1/3] dt-bindings: rtc: add binding for Sophgo CV1800B rtc controller

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Date:   Tue, 28 Nov 2023 21:20:18 +0800
From:   jingbao qiu <qiujingbao.dlmu@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     a.zummo@...ertech.it, alexandre.belloni@...tlin.com,
        krzysztof.kozlowski+dt@...aro.org, chao.wei@...hgo.com,
        unicorn_wang@...look.com, conor+dt@...nel.org, robh+dt@...nel.org,
        conor@...nel.org, paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, linux-rtc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: rtc: add binding for Sophgo CV1800B rtc controller

On Tue, Nov 21, 2023 at 5:57 PM Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 21/11/2023 10:46, Jingbao Qiu wrote:
> > Add devicetree binding for Sophgo CV1800B SoC rtc controller.
>
> A nit, subject: drop second/last, redundant "binding for". The
> "dt-bindings" prefix is already stating that these are bindings.

will fix.

>
> >
> > Signed-off-by: Jingbao Qiu <qiujingbao.dlmu@...il.com>
> > ---
> >  .../bindings/rtc/sophgo,cv1800b-rtc.yaml      | 37 +++++++++++++++++++
> >  1 file changed, 37 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/rtc/sophgo,cv1800b-rtc.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/rtc/sophgo,cv1800b-rtc.yaml b/Documentation/devicetree/bindings/rtc/sophgo,cv1800b-rtc.yaml
> > new file mode 100644
> > index 000000000000..fefb1e70c45c
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/rtc/sophgo,cv1800b-rtc.yaml
> > @@ -0,0 +1,37 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/rtc/sophgo,cv1800b-rtc.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Sophgo CV1800B SoC RTC Controller
>
> What is a RTC Controller? You have multiple RTCs there?
>

will drop "Controller", as I think RTC is not something like I2C, eMMC, USB,
which have the "controller <-> client/device" model.

> > +
> > +maintainers:
> > +  - Jingbao Qiu <qiujingbao.dlmu@...il.com>
> > +
>
> Missing ref to rtc.yaml. Unless it is not applicable but then why?

ok, I should ref this file.

>
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - sophgo,cv1800b-rtc
>
> Blank line

ok

>
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - interrupts
> > +
> > +additionalProperties: false
>
> unevaluatedProperties instead

will fix .

>
> > +
> > +examples:
> > +  - |
> > +    rtc-controller@...26000{
>
> The names is always "rtc", unless this is not RTC. If it isn't, please
> add full description of the hardware.

I will use "rtc" replace "rtc-controller" .

>
> > +      compatible = "sophgo,cv800b-rtc";
> > +      reg = <0x05026000 0x1000>;
> > +      interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
> > +      interrupt-parent = <&plic0>;
> > +      clocks = <&osc>;
>
> Why do you send untested bindings? Review costs significant amount of
> effort. Code was also not compiled? Warnings not fixed?

I will check it.
Leading 0 and referencing issues will be fixed.

>
> Best regards,
> Krzysztof
>

I'm sorry for taking so long to reply.
I took a few days off due to being infected with the flu.
Thank you again for your patient reply.

Best regards,
Jingbao Qiu