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
  ...

.gitignore

@@ -15,6 +15,7 @@
 *.bin
 *.bz2
 *.c.[012]*.*
+*.dt.yaml
 *.dtb
 *.dtb.S
 *.dwo

Documentation/Makefile

@@ -2,7 +2,7 @@
 # Makefile for Sphinx documentation
 #
 
-subdir-y :=
+subdir-y := devicetree/bindings/
 
 # You can set these variables from the command line.
 SPHINXBUILD   = sphinx-build

Documentation/devicetree/bindings/.gitignore

@@ -0,0 +1,2 @@
+*.example.dts
+processed-schema.yaml

Documentation/devicetree/bindings/Makefile

@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: GPL-2.0
+DT_DOC_CHECKER ?= dt-doc-validate
+DT_EXTRACT_EX ?= dt-extract-example
+DT_MK_SCHEMA ?= dt-mk-schema
+DT_MK_SCHEMA_FLAGS := $(if $(DT_SCHEMA_FILES), -u)
+
+quiet_cmd_chk_binding = CHKDT   $(patsubst $(srctree)/%,%,$<)
+      cmd_chk_binding = $(DT_DOC_CHECKER) $< ; \
+                        $(DT_EXTRACT_EX) $< > $@
+
+$(obj)/%.example.dts: $(src)/%.yaml FORCE
+	$(call if_changed,chk_binding)
+
+DT_TMP_SCHEMA := processed-schema.yaml
+extra-y += $(DT_TMP_SCHEMA)
+
+quiet_cmd_mk_schema = SCHEMA  $@
+      cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ $(filter-out FORCE, $^)
+
+DT_DOCS = $(shell cd $(srctree)/$(src) && find * -name '*.yaml')
+DT_SCHEMA_FILES ?= $(addprefix $(src)/,$(DT_DOCS))
+
+extra-y += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))
+extra-y += $(patsubst $(src)/%.yaml,%.example.dtb, $(DT_SCHEMA_FILES))
+
+$(obj)/$(DT_TMP_SCHEMA): $(DT_SCHEMA_FILES) FORCE
+	$(call if_changed,mk_schema)

Documentation/devicetree/bindings/arm/altera.yaml

@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/altera.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Altera's SoCFPGA platform device tree bindings
+
+maintainers:
+  - Dinh Nguyen <dinguyen@kernel.org>
+
+properties:
+  compatible:
+    items:
+      - enum:
+        - altr,socfpga-cyclone5
+        - altr,socfpga-arria5
+        - altr,socfpga-arria10
+      - const: altr,socfpga
+...

Documentation/devicetree/bindings/arm/altera/socfpga-clk-manager.yaml

@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/altera/socfpga-clk-manager.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Altera SOCFPGA Clock Manager
+
+maintainers:
+  - Dinh Nguyen <dinguyen@kernel.org>
+
+description: test
+
+properties:
+  compatible:
+    items:
+      - const: altr,clk-mgr
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+
+examples:
+  - |
+    clkmgr@ffd04000 {
+      compatible = "altr,clk-mgr";
+      reg = <0xffd04000 0x1000>;
+    };
+
+...

Documentation/devicetree/bindings/arm/calxeda.yaml

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/calxeda.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Calxeda Platforms Device Tree Bindings
+
+maintainers:
+  - Rob Herring <robh@kernel.org>
+description: |+
+  Bindings for boards with Calxeda Cortex-A9 based ECX-1000 (Highbank) SOC
+  or Cortex-A15 based ECX-2000 SOCs
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    items:
+      - enum:
+          - calxeda,highbank
+          - calxeda,ecx-2000