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Message-ID: <CAK7LNAQUcHCz-hChi5SKj+Ler-FaUscbkF1KSV+wTq0sC1QeHg@mail.gmail.com>
Date:   Fri, 17 Apr 2020 11:58:40 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Rob Herring <robh@...nel.org>
Cc:     DTML <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dt-bindings: Add a minimum version check for dtschema

On Fri, Apr 17, 2020 at 3:54 AM Rob Herring <robh@...nel.org> wrote:
>
> The dtschema package must be somewhat up to date as the tools and
> meta-schema checks are still evolving. Implement a version check,
> so this can be enforced. This will help ensure new schema submissions
> get checked against the latest meta-schemas.
>
> Cc: Masahiro Yamada <masahiroy@...nel.org>
> Signed-off-by: Rob Herring <robh@...nel.org>
> ---


You cannot check this in the parse stage.


Without the latest dt-schema tools,
you cannot do even 'make clean'. This is odd.

$ make clean
Documentation/devicetree/bindings/Makefile:13: *** dtschema minimum
version is v2020.04.  Stop.
make[1]: *** [scripts/Makefile.clean:66:
Documentation/devicetree/bindings] Error 2
make: *** [Makefile:1729: _clean_Documentation] Error 2




How about adding a phony target to check the version?





PHONY += check_dtschema_version
check_dtschema_version:
        ( Do something to check tool version)

quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
      cmd_chk_binding = $(DT_DOC_CHECKER) -u $(srctree)/$(src) $< ; \
                        $(DT_EXTRACT_EX) $< > $@

$(obj)/%.example.dts: $(src)/%.yaml check_dtschema_version FORCE
$(call if_changed,chk_binding)




>  Documentation/devicetree/bindings/Makefile | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
> index 1df680d07461..9f2e64e29d79 100644
> --- a/Documentation/devicetree/bindings/Makefile
> +++ b/Documentation/devicetree/bindings/Makefile
> @@ -3,6 +3,16 @@ DT_DOC_CHECKER ?= dt-doc-validate
>  DT_EXTRACT_EX ?= dt-extract-example
>  DT_MK_SCHEMA ?= dt-mk-schema
>
> +DT_SCHEMA_MIN_VERSION = 2020.04
> +ifeq (1,$(shell \
> +       printf "%s\n" \
> +               $(DT_SCHEMA_MIN_VERSION) \
> +               $$($(DT_DOC_CHECKER) --version 2>/dev/null || echo 0) | sort -VC; \
> +               echo $$? \
> +       ))
> +$(error dtschema minimum version is v$(DT_SCHEMA_MIN_VERSION))
> +endif
> +
>  quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
>        cmd_chk_binding = $(DT_DOC_CHECKER) -u $(srctree)/$(src) $< ; \
>                          $(DT_EXTRACT_EX) $< > $@
> --
> 2.20.1
>


--
Best Regards
Masahiro Yamada

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