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kbuild: Add support for DT binding schema checks

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This adds the build infrastructure for checking DT binding schema
documents and validating dts files using the binding schema.

Check DT binding schema documents:
make dt_binding_check

Build dts files and check using DT binding schema:
make dtbs_check

Optionally, DT_SCHEMA_FILES can be passed in with a schema file(s) to
use for validation. This makes it easier to find and fix errors
generated by a specific schema.

Currently, the validation targets are separate from a normal build to
avoid a hard dependency on the external DT schema project and because
there are lots of warnings generated.

Cc: Jonathan Corbet <[email protected]>
Cc: Mark Rutland <[email protected]>
Acked-by: Masahiro Yamada <[email protected]>
Cc: Michal Marek <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Rob Herring <[email protected]>
This commit is contained in:
Rob Herring 2018-09-06 13:26:07 -05:00
commit 4f0e3a57d6
7 changed files with 67 additions and 6 deletions
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4
scripts/dtc/Makefile
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@ -12,6 +12,10 @@ dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o
HOST_EXTRACFLAGS := -I$(src)/libfdt
ifeq ($(wildcard /usr/include/yaml.h),)
ifneq ($(CHECK_DTBS),)
$(error dtc needs libyaml for DT schema validation support. \
Install the necessary libyaml development package.)
endif
HOST_EXTRACFLAGS += -DNO_YAML
else
dtc-objs += yamltree.o