Merge tag 'devicetree-for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull Devicetree updates from Rob Herring:
 "The biggest highlight here is the start of using json-schema for DT
  bindings. Being able to validate bindings has been discussed for years
  with little progress.

   - Initial support for DT bindings using json-schema language. This is
     the start of converting DT bindings from free-form text to a
     structured format.

   - Reworking of initrd address initialization. This moves to using the
     phys address instead of virt addr in the DT parsing code. This
     rework was motivated by CONFIG_DEV_BLK_INITRD causing unnecessary
     rebuilding of lots of files.

   - Fix stale phandle entries in phandle cache

   - DT overlay validation improvements. This exposed several memory
     leak bugs which have been fixed.

   - Use node name and device_type helper functions in DT code

   - Last remaining conversions to using %pOFn printk specifier instead
     of device_node.name directly

   - Create new common RTC binding doc and move all trivial RTC devices
     out of trivial-devices.txt.

   - New bindings for Freescale MAG3110 magnetometer, Cadence Sierra
     PHY, and Xen shared memory

   - Update dtc to upstream version v1.4.7-57-gf267e674d145"

* tag 'devicetree-for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (68 commits)
  of: __of_detach_node() - remove node from phandle cache
  of: of_node_get()/of_node_put() nodes held in phandle cache
  gpio-omap.txt: add reg and interrupts properties
  dt-bindings: mrvl,intc: fix a trivial typo
  dt-bindings: iio: magnetometer: add dt-bindings for freescale mag3110
  dt-bindings: Convert trivial-devices.txt to json-schema
  dt-bindings: arm: mrvl: amend Browstone compatible string
  dt-bindings: arm: Convert Tegra board/soc bindings to json-schema
  dt-bindings: arm: Convert ZTE board/soc bindings to json-schema
  dt-bindings: arm: Add missing Xilinx boards
  dt-bindings: arm: Convert Xilinx board/soc bindings to json-schema
  dt-bindings: arm: Convert VIA board/soc bindings to json-schema
  dt-bindings: arm: Convert ST STi board/soc bindings to json-schema
  dt-bindings: arm: Convert SPEAr board/soc bindings to json-schema
  dt-bindings: arm: Convert CSR SiRF board/soc bindings to json-schema
  dt-bindings: arm: Convert QCom board/soc bindings to json-schema
  dt-bindings: arm: Convert TI nspire board/soc bindings to json-schema
  dt-bindings: arm: Convert TI davinci board/soc bindings to json-schema
  dt-bindings: arm: Convert Calxeda board/soc bindings to json-schema
  dt-bindings: arm: Convert Altera board/soc bindings to json-schema
  ...

1 files changed, 23 insertions, 3 deletions

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 8fe4468f9bda..0e78249ee77e 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -61,6 +61,11 @@ real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))
 extra-y				+= $(dtb-y)
 extra-$(CONFIG_OF_ALL_DTBS)	+= $(dtb-)
 
+ifneq ($(CHECK_DTBS),)
+extra-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y))
+extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-))
+endif
+
 # Add subdir path
 
 extra-y		:= $(addprefix $(obj)/,$(extra-y))
@@ -251,7 +256,7 @@ DTC_FLAGS += -Wno-unit_address_vs_reg \
 	-Wno-avoid_unnecessary_addr_size \
 	-Wno-alias_paths \
 	-Wno-graph_child_address \
-	-Wno-graph_port \
+	-Wno-simple_bus_reg \
 	-Wno-unique_unit_address \
 	-Wno-pci_device_reg
 endif
@@ -284,13 +289,28 @@ $(obj)/%.dtb.S: $(obj)/%.dtb FORCE
 quiet_cmd_dtc = DTC     $@
 cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
 	$(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
-	$(DTC) -O dtb -o $@ -b 0 \
+	$(DTC) -O $(2) -o $@ -b 0 \
 		$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
 		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
 	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 
 $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
-	$(call if_changed_dep,dtc)
+	$(call if_changed_dep,dtc,dtb)
+
+DT_CHECKER ?= dt-validate
+DT_BINDING_DIR := Documentation/devicetree/bindings
+DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
+
+quiet_cmd_dtb_check =	CHECK   $@
+      cmd_dtb_check =	$(DT_CHECKER) -p $(DT_TMP_SCHEMA) $@ ;
+
+define rule_dtc_dt_yaml
+	$(call cmd_and_fixdep,dtc,yaml)		\
+	$(call echo-cmd,dtb_check) $(cmd_dtb_check)
+endef
+
+$(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE
+	$(call if_changed_rule,dtc_dt_yaml)
 
 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)