linux-kernel - Re: [PATCH] dt-bindings: timer: add Ralink SoCs timer documentation

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Message-ID: <CAMhs-H9L0GybDOdmx5_RCw-=PaO3DYUOZPswiRErRRg5Fi57tQ@mail.gmail.com>
Date:   Tue, 20 Jun 2023 11:51:04 +0200
From:   Sergio Paracuellos <sergio.paracuellos@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     devicetree@...r.kernel.org, daniel.lezcano@...aro.org,
        tglx@...utronix.de, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: timer: add Ralink SoCs timer documentation

Hi Krzysztof,

On Tue, Jun 20, 2023 at 11:40 AM Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 20/06/2023 11:34, Sergio Paracuellos wrote:
> > Add YAML documentation for the timer which is present on Ralink SoCs.
>
> If there is going to be new version:
> A nit, subject: drop second/last, redundant "documentation". The
> "dt-bindings" prefix is already stating that these are bindings in
> documentation.

Understood, thanks.

>
> >
> > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@...il.com>
> > ---
> >  .../bindings/timer/ralink,rt2880-timer.yaml   | 49 +++++++++++++++++++
> >  1 file changed, 49 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml b/Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml
> > new file mode 100644
> > index 000000000000..9a315449f73e
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/timer/ralink,rt2880-timer.yaml
> > @@ -0,0 +1,49 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/timer/ralink,rt2880-timer.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Timer present in Ralink family SoCs
> > +
> > +maintainers:
> > +  - Sergio Paracuellos <sergio.paracuellos@...il.com>
> > +
> > +properties:
> > +  compatible:
> > +    const: ralink,rt2880-timer
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    maxItems: 1
> > +
> > +  clock-names:
> > +    const: timer
>
> Names matching the module name are not really helpful, so drop it,
> unless any existing user needs it.

I am ok with dropping this. If you meant with an existing user
something that is already mainlined in the kernel tree then I would
say there is no need for this 'clock-names'. I don't know about other
places since these SoCs are pretty old and almost with nothing
documented. I am doing the effort of trying to document all the stuff
before porting some openWRT device tree files to the kernel (this
timer driver is already included in 'arch/mips/ralink' so I am
documenting already in-tree things). So I guess I should send v2
removing this?

Thanks,
    Sergio Paracuellos
>
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
>
> Best regards,
> Krzysztof
>