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kbuild: Optionally enable schema checks for %.dtb targets

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While not documented, schema checks for single dtb targets mostly work
already by setting 'CHECK_DTBS=1'. However, the dependencies are not
handled and it only works if 'make dt_bindings_check' was run first and
generated processed-schema.json. In addition, changing a binding file
doesn't cause the schema to be rebuilt and dtb to be revalidated.

Making this work turns out to be simple. Whenever CHECK_DTBS is set,
make 'dt_binding_check' a 'dtbs_prepare' dependency.

I reimplemented here what Masahiro had originally come up with a while
back.

Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20221220013233.2890335-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Rob Herring 2022-12-19 19:32:33 -06:00
parent 9e699b8985
commit ec201955a5
1 changed files with 8 additions and 1 deletions
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9
Makefile
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@ -1481,7 +1481,10 @@ dtbs_prepare: include/config/kernel.release scripts_dtc
ifneq ($(filter dtbs_check, $(MAKECMDGOALS)),)
export CHECK_DTBS=y
dtbs: dt_binding_check
endif
ifneq ($(CHECK_DTBS),)
dtbs_prepare: dt_binding_check
endif
dtbs_check: dtbs
@ -1779,6 +1782,10 @@ help:
@echo ' 3: more obscure warnings, can most likely be ignored'
@echo ' e: warnings are being treated as errors'
@echo ' Multiple levels can be combined with W=12 or W=123'
@$(if $(dtstree), \
echo ' make CHECK_DTBS=1 [targets] Check all generated dtb files against schema'; \
echo ' This can be applied both to "dtbs" and to individual "foo.dtb" targets' ; \
)
@echo ''
@echo 'Execute "make" or "make all" to build all targets marked with [*] '
@echo 'For further info see the ./README file'