linux-kernel - Re: [PATCH v2 2/2] dt-bindings: iio: adc: Add DT docs for AD7292

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Message-ID: <20191023034305.f6zm6hyvh3nlltas@smtp.gmail.com>
Date:   Wed, 23 Oct 2019 00:43:07 -0300
From:   Marcelo Schmitt <marcelo.schmitt1@...il.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Dragos Bogdan <dragos.bogdan@...log.com>,
        Alexandru Ardelean <alexandru.ardelean@...log.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:IIO SUBSYSTEM AND DRIVERS" <linux-iio@...r.kernel.org>,
        devicetree@...r.kernel.org, kernel-usp@...glegroups.com
Subject: Re: [PATCH v2 2/2] dt-bindings: iio: adc: Add DT docs for AD7292

Hi Rob,

OK, thanks for the explanation.

I indeed missed some details from the documentation. I will be more
careful on my next readings.

I see there are other documentation files at Documentation/devicetree/
and Documentation/devicetree/bindings/. Besides these, would you
recommend other documentation and/or material for those who want to
write dt-bindings that validate with dt-schema?

Thanks in advance,

Marcelo

On 10/22, Rob Herring wrote:
> On Tue, Oct 22, 2019 at 9:06 AM Marcelo Schmitt
> <marcelo.schmitt1@...il.com> wrote:
> >
> > Hi,
> >
> > I ran the DTC and CHECK for AD7292 schema however, the target '__build'
> > did not run due to errors found in regulator/fixed-regulator.yaml and
> > arm/allwinner,sun4i-a10-csi.yaml.
> 
> Fixes for those are still pending in -next. Use 'make -k' and ignore those.
> 
> >
> > I recall seeing something about the maxItems requirement over regulator
> > supplies being changed on the iio mailing list, so I updated my repo
> > locally, cloned and reinstalled the dt-schema toolset. However, I still
> > can't make it go through the '__build' target.
> >
> > Python 3.7.5rc1 is my default python and I got the following pip3
> > packages installed:
> >
> > ruamel.yaml        0.16.5
> > ruamel.yaml.clib   0.2.0
> > rfc3987            1.3.8
> > jsonschema         3.0.1
> > dtschema           0.0.1  at $HOME/<iio repo dir>/dt-schema
> >
> > Debian Bullseye packages installed:
> > python3-yaml/testing,now 5.1.2-1
> > libyaml-dev/testing,now 0.2.2-1
> >
> > I was only able to run DTC after installing the libyaml-dev package, so
> > I think it might be worth to add it to the project dependencies at
> > https://github.com/robherring/dt-schema.
> 
> Strictly speaking, it's not a dependency for dt-schema. It's
> documented in Documentation/devicetree/writing-schema.rst. I've added
> a pointer to that in bindings/submitting-patches.txt. I'm not sure how
> else to make it more obvious.
> 
> BTW, You will get a useful error message if libyaml is missing when
> building 'make dtbs_check'. I need to make that work for
> dt_binding_check.
> 
> > apt-get install libyaml-dev
> 
> You need the lib too, but that tends to already be installed. IIRC,
> installing the headers doesn't install the lib automatically.
> 
> In any case, I wanted to avoid putting in distro specific instructions
> in the kernel.
> 
> Rob
> 
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