Subject: Re: [PATCH v2 30/34] dt-bindings: arm: Convert Tegra board/soc bindings to json-schema

From: Thierry Reding <[email-masked]>
Date: Fri, 7 Dec 2018 12:46:19 +0100

On Thu, Dec 06, 2018 at 04:38:44PM -0600, Rob Herring wrote:
> On Tue, Dec 4, 2018 at 2:50 AM Thierry Reding <[email-masked]> wrote:
> >
> > On Mon, Dec 03, 2018 at 03:32:19PM -0600, Rob Herring wrote:
> > > Convert Tegra SoC bindings to DT schema format using json-schema.
> > >
> > > Cc: Mark Rutland <[email-masked]>
> > > Cc: Thierry Reding <[email-masked]>
> > > Cc: Jonathan Hunter <[email-masked]>
> > > Cc: [email-masked]
> > > Cc: [email-masked]
> > > Signed-off-by: Rob Herring <[email-masked]>
> > > ---
> > >  .../devicetree/bindings/arm/tegra.txt         |  65 -----------
> > >  .../devicetree/bindings/arm/tegra.yaml        | 101 ++++++++++++++++++
> > >  2 files changed, 101 insertions(+), 65 deletions(-)
> > >  delete mode 100644 Documentation/devicetree/bindings/arm/tegra.txt
> > >  create mode 100644 Documentation/devicetree/bindings/arm/tegra.yaml
> > >
> > > diff --git a/Documentation/devicetree/bindings/arm/tegra.txt b/Documentation/devicetree/bindings/arm/tegra.txt
> > > deleted file mode 100644
> > > index c59b15f64346..000000000000
> > > --- a/Documentation/devicetree/bindings/arm/tegra.txt
> > > +++ /dev/null
> > > @@ -1,65 +0,0 @@
> > > -NVIDIA Tegra device tree bindings
> > > --------------------------------------------
> > > -
> > > -SoCs
> > > --------------------------------------------
> > > -
> > > -Each device tree must specify which Tegra SoC it uses, using one of the
> > > -following compatible values:
> > > -
> > > -  nvidia,tegra20
> > > -  nvidia,tegra30
> > > -  nvidia,tegra114
> > > -  nvidia,tegra124
> > > -  nvidia,tegra132
> > > -  nvidia,tegra210
> > > -  nvidia,tegra186
> > > -  nvidia,tegra194
> > > -
> > > -Boards
> > > --------------------------------------------
> > > -
> > > -Each device tree must specify which one or more of the following
> > > -board-specific compatible values:
> > > -
> > > -  ad,medcom-wide
> > > -  ad,plutux
> > > -  ad,tamonten
> > > -  ad,tec
> > > -  compal,paz00
> > > -  compulab,trimslice
> > > -  nvidia,beaver
> > > -  nvidia,cardhu
> > > -  nvidia,cardhu-a02
> > > -  nvidia,cardhu-a04
> > > -  nvidia,dalmore
> > > -  nvidia,harmony
> > > -  nvidia,jetson-tk1
> > > -  nvidia,norrin
> > > -  nvidia,p2371-0000
> > > -  nvidia,p2371-2180
> > > -  nvidia,p2571
> > > -  nvidia,p2771-0000
> > > -  nvidia,p2972-0000
> > > -  nvidia,roth
> > > -  nvidia,seaboard
> > > -  nvidia,tn7
> > > -  nvidia,ventana
> > > -  toradex,apalis_t30
> > > -  toradex,apalis_t30-eval
> > > -  toradex,apalis_t30-v1.1
> > > -  toradex,apalis_t30-v1.1-eval
> > > -  toradex,apalis-tk1
> > > -  toradex,apalis-tk1-eval
> > > -  toradex,apalis-tk1-v1.2
> > > -  toradex,apalis-tk1-v1.2-eval
> > > -  toradex,colibri_t20
> > > -  toradex,colibri_t20-eval-v3
> > > -  toradex,colibri_t20-iris
> > > -  toradex,colibri_t30
> > > -  toradex,colibri_t30-eval-v3
> > > -
> > > -Trusted Foundations
> > > --------------------------------------------
> > > -Tegra supports the Trusted Foundation secure monitor. See the
> > > -"tlm,trusted-foundations" binding's documentation for more details.
> > > diff --git a/Documentation/devicetree/bindings/arm/tegra.yaml b/Documentation/devicetree/bindings/arm/tegra.yaml
> > > new file mode 100644
> > > index 000000000000..66493892ffc1
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/arm/tegra.yaml
> > > @@ -0,0 +1,101 @@
> > > +# SPDX-License-Identifier: GPL-2.0
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/arm/tegra.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> >
> > Could you explain what these are? They give 404, so I assume they are
> > more like placeholders and not actually used?
> 
> Please read the documentation in patch 2. They are used, but aren't live URLs.

Okay, thanks for pointing that out. I wasn't Cc'ed on that patch, so it
took a while to hunt it down.

> > > +
> > > +title: NVIDIA Tegra device tree bindings
> > > +
> > > +maintainers:
> > > +  - Marcel Ziswiler <[email-masked]>
> > > +  - Peter De Schrijver <[email-masked]>
> >
> > Not sure how you got that list, but probably from git history. I think
> > it makes sense to replace Marcel and Peter with Jon and myself.
> 
> Will do.
> 
> > Other than that, looks fine to me. Some of the enumerations below look
> > somewhat hard to parse, but I suspect that it will become second nature
> > in no time.
> 
> We can add descriptions and/or comments if that helps. I didn't add
> them if not already there.

My comment was regarding the schema syntax with the oneOf, - items, etc.
That's all new to me and difficult to read, but I'm sure I'll get used
to it.

Thierry
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