linux-kernel - Re: [PATCH 2/3] kbuild: allow to run dt_binding_check and dtbs

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Date:   Sun, 8 Mar 2020 11:18:41 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Rob Herring <robh+dt@...nel.org>
Cc:     Sam Ravnborg <sam@...nborg.org>, DTML <devicetree@...r.kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Mark Rutland <mark.rutland@....com>,
        Maxime Ripard <mripard@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>
Subject: Re: [PATCH 2/3] kbuild: allow to run dt_binding_check and dtbs_check
 in a single command

Hi Sam, Rob,

On Thu, Mar 5, 2020 at 12:19 AM Rob Herring <robh+dt@...nel.org> wrote:
>
> On Tue, Mar 3, 2020 at 11:55 PM Sam Ravnborg <sam@...nborg.org> wrote:
> >
> > Hi Masahiro
> >
> > Thanks for the nice improvements to the dt infrastructure.
> >
> > Stealing a thread here..
> >
> > >  It is also possible to run checks with a single schema file by setting the
> > >  ``DT_SCHEMA_FILES`` variable to a specific schema file.
> > Would it be simple to enable the use of dirs for DT_SCHEMA_FILES?
>
> I did name that with the intent of supporting more than one file.
>
> > So I for example could do:
> >
> > make dt_bindings_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/display/panel/
>
> Does this work?:
>
> make dt_bindings_check DT_SCHEMA_FILES="$(find
> Documentation/devicetree/bindings/display/panel/ -name '*.yaml' |
> xargs)"
>
> Rob

Rob proposed a solution, so
I do not think we should extend this too much.

BTW, there is a limitation that
DT_SCHEMA_FILES must point to file(s)
in Documentation/devicetree/bindings/.

$ cp  Documentation/devicetree/bindings/arm/psci.yaml   ./
$ make  dt_binding_check  DT_SCHEMA_FILES=psci.yaml
  SCHEMA  Documentation/devicetree/bindings/processed-schema.yaml
make[1]: *** No rule to make target
'Documentation/devicetree/bindings/psci.yaml', needed by '__build'.
Stop.
make: *** [Makefile:1278: dt_binding_check] Error 2

$(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))
does not work if DT_SCHEMA_FILES is outside of
Documentation/devicetree/bindings/, but I have no
solution for this.

--
Best Regards
Masahiro Yamada