@@ -1158,12 +1158,28 @@ endif
@# disabling OF_BOARD.
$(call cmd,ofcheck,$(KCONFIG_CONFIG))
-PHONY += dtbs
+PHONY += dtbs dtbs_check
dtbs: dts/dt.dtb
@:
-dts/dt.dtb: u-boot
+dts/dt.dtb: dtbs_prepare u-boot
$(Q)$(MAKE) $(build)=dts dtbs
+dtbs_prepare: prepare3
+
+ifneq ($(filter dtbs_check, $(MAKECMDGOALS)),)
+export CHECK_DTBS=y
+endif
+
+ifneq ($(CHECK_DTBS),)
+dtbs_prepare: dt_binding_check
+endif
+
+dtbs_check: dt_binding_check dtbs
+
+DT_BINDING_DIR := dts/upstream/Bindings
+dt_binding_check: scripts_dtc
+ $(Q)$(MAKE) $(build)=$(DT_BINDING_DIR) $(DT_BINDING_DIR)/processed-schema.json
+
quiet_cmd_copy = COPY $@
cmd_copy = cp $< $@
@@ -47,9 +47,9 @@ quiet_cmd_mk_schema = SCHEMA $@
rm -f $$f
define rule_chkdt
- $(if $(DT_SCHEMA_LINT),$(call cmd,yamllint),)
- $(call cmd,chk_bindings)
- $(call cmd,mk_schema)
+ $(if $(DT_SCHEMA_LINT),$(call echo-cmd,yamllint) $(cmd_yamllint),); \
+ $(call echo-cmd,chk_bindings) $(cmd_chk_bindings); \
+ $(call echo-cmd,mk_schema) $(cmd_mk_schema)
endef
DT_DOCS = $(patsubst $(srctree)/%,%,$(shell $(find_all_cmd)))
@@ -356,8 +356,21 @@ endif
dtsi_include_list_deps = $(addprefix $(obj)/,$(subst $(quote),,$(dtsi_include_list)))
-$(obj)/%.dtb: $(src)/%.dts $(DTC) $(dtsi_include_list_deps) FORCE
- $(call if_changed_dep,dtc)
+ifneq ($(CHECK_DTBS),)
+DT_CHECKER ?= dt-validate
+DT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),-l $(DT_SCHEMA_FILES),-m)
+DT_BINDING_DIR := dts/upstream/Bindings
+DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.json
+
+quiet_cmd_dtb = DTC_CHK $@
+ cmd_dtb = $(cmd_dtc) ; $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ || true
+else
+quiet_cmd_dtb = $(quiet_cmd_dtc)
+ cmd_dtb = $(cmd_dtc)
+endif
+
+$(obj)/%.dtb: $(src)/%.dts $(DTC) $(dtsi_include_list_deps) $(DT_TMP_SCHEMA) FORCE
+ $(call if_changed_dep,dtb)
pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
This adds the build infrastructure for checking DT binding schema documents and validating dtb files using the binding schema. Here we use devicetree-rebasing subtree to provide the DT bindings. Along with that adapt dts/upstream/Bindings/Makefile to align with old U-Boot Kbuild infrastructure. Dependency: ----------- The DT schema project must be installed in order to validate the DT schema binding documents and validate DTS files using the DT schema. The DT schema project can be installed with pip:: pip3 install dtschema Note that 'dtschema' installation requires 'swig' and Python development files installed first. On Debian/Ubuntu systems:: apt install swig python3-dev Testing: -------- 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. Note, at this point dtbs_check is an optional build target as there are many warnings generated due to custom DT properties used by many platforms in u-boot. It is expected with these checks that compliance with DT bindings to take place. Once that's done it can be added to CI builds to remain compliant with DT bindings. Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org> Signed-off-by: Sumit Garg <sumit.garg@linaro.org> --- Changes in v6: - None Changes in v5: - None Changes in v4: - Switched subtree to be imported as dts/upstream sub-directory rather than devicetree-rebasing sub-directory to better suite U-Boot directory structure. - Incorporate build fix to adjust Bindings Makefile rules to old U-Boot Kbuild infrastructure. Changes in v3: - None Changes in v2: - None Makefile | 20 ++++++++++++++++++-- dts/upstream/Bindings/Makefile | 6 +++--- scripts/Makefile.lib | 17 +++++++++++++++-- 3 files changed, 36 insertions(+), 7 deletions(-)