Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux-2.6

Pull device tree changes from Grant Likely:
 "Here are the DT changes I've got queued up for v3.8.  As described
  below, there are a lot of bug fixes here and documentation updates but
  nothing major:

  Bug fixes, little cleanups, and documentation changes.  The most
  invasive thing here touches a bunch of the arch directories to use a
  common build rule for .dtb files.  There are no major changes to
  functionality here other than a few new helper functions."

* tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux-2.6: (34 commits)
  arm64: Fix the dtbs target building
  mtd: nand: davinci: fix the binding documentation
  rtc: rtc-mv: Add the device tree binding documentation
  devicetree/bindings: Move gpio-leds binding into leds directory
  of/vendor-prefixes: add Imagination Technologies
  microblaze: use new common dtc rule
  c6x: use new common dtc rule
  openrisc: use new common dtc rule
  arm64: Add dtbs target for building all the enabled dtb files
  arm64: use new common dtc rule
  ARM: dt: change .dtb build rules to build in dts directory
  kbuild: centralize .dts->.dtb rule
  Fix build when CONFIG_W1_MASTER_GPIO=m b exporting "allnodes"
  of/spi: Honour "status=disabled" property of device
  of_mdio: Honour "status=disabled" property of device
  of_i2c: Honour "status=disabled" property of device
  powerpc: Fix fallout from device_node->name constification
  of: add 'const' for of_parse_phandle parameter *np
  Documentation: correct of_platform_populate() argument list
  script: dtc: clean generated files
  ...

65 files changed, 357 insertions, 207 deletions

diff --git a/Documentation/devicetree/bindings/arm/davinci/nand.txt b/Documentation/devicetree/bindings/arm/davinci/nand.txt
index e37241f1fdd8..49fc7ada929a 100644
--- a/Documentation/devicetree/bindings/arm/davinci/nand.txt
+++ b/Documentation/devicetree/bindings/arm/davinci/nand.txt
@@ -23,29 +23,16 @@ Recommended properties :
 - ti,davinci-nand-buswidth: buswidth 8 or 16
 - ti,davinci-nand-use-bbt: use flash based bad block table support.
 
-Example (enbw_cmc board):
-aemif@60000000 {
-        compatible = "ti,davinci-aemif";
-        #address-cells = <2>;
-        #size-cells = <1>;
-        reg = <0x68000000 0x80000>;
-        ranges = <2 0 0x60000000 0x02000000
-                  3 0 0x62000000 0x02000000
-                  4 0 0x64000000 0x02000000
-                  5 0 0x66000000 0x02000000
-                  6 0 0x68000000 0x02000000>;
-        nand@3,0 {
-                compatible = "ti,davinci-nand";
-                reg = <3 0x0 0x807ff
-                        6 0x0 0x8000>;
-                #address-cells = <1>;
-                #size-cells = <1>;
-                ti,davinci-chipselect = <1>;
-                ti,davinci-mask-ale = <0>;
-                ti,davinci-mask-cle = <0>;
-                ti,davinci-mask-chipsel = <0>;
-                ti,davinci-ecc-mode = "hw";
-                ti,davinci-ecc-bits = <4>;
-                ti,davinci-nand-use-bbt;
-        };
+Example(da850 EVM ):
+nand_cs3@62000000 {
+        compatible = "ti,davinci-nand";
+        reg = <0x62000000 0x807ff
+                0x68000000 0x8000>;
+        ti,davinci-chipselect = <1>;
+        ti,davinci-mask-ale = <0>;
+        ti,davinci-mask-cle = <0>;
+        ti,davinci-mask-chipsel = <0>;
+        ti,davinci-ecc-mode = "hw";
+        ti,davinci-ecc-bits = <4>;
+        ti,davinci-nand-use-bbt;
 };
diff --git a/Documentation/devicetree/bindings/arm/l2cc.txt b/Documentation/devicetree/bindings/arm/l2cc.txt
index 7ca52161e7ab..7c3ee3aeb7b7 100644
--- a/Documentation/devicetree/bindings/arm/l2cc.txt
+++ b/Documentation/devicetree/bindings/arm/l2cc.txt
@@ -37,7 +37,7 @@ L2: cache-controller {
         reg = <0xfff12000 0x1000>;
         arm,data-latency = <1 1 1>;
         arm,tag-latency = <2 2 2>;
-        arm,filter-latency = <0x80000000 0x8000000>;
+        arm,filter-ranges = <0x80000000 0x8000000>;
         cache-unified;
         cache-level = <2>;
         interrupts = <45>;
diff --git a/Documentation/devicetree/bindings/i2c/atmel-i2c.txt b/Documentation/devicetree/bindings/i2c/i2c-at91.txt
index b689a0d9441c..b689a0d9441c 100644
--- a/Documentation/devicetree/bindings/i2c/atmel-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-at91.txt
diff --git a/Documentation/devicetree/bindings/i2c/davinci.txt b/Documentation/devicetree/bindings/i2c/i2c-davinci.txt
index 2dc935b4113d..2dc935b4113d 100644
--- a/Documentation/devicetree/bindings/i2c/davinci.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-davinci.txt
diff --git a/Documentation/devicetree/bindings/i2c/gpio-i2c.txt b/Documentation/devicetree/bindings/i2c/i2c-gpio.txt
index 4f8ec947c6bd..4f8ec947c6bd 100644
--- a/Documentation/devicetree/bindings/i2c/gpio-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-gpio.txt
diff --git a/Documentation/devicetree/bindings/i2c/fsl-imx-i2c.txt b/Documentation/devicetree/bindings/i2c/i2c-imx.txt
index f3cf43b66f7e..f3cf43b66f7e 100644
--- a/Documentation/devicetree/bindings/i2c/fsl-imx-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-imx.txt
diff --git a/Documentation/devicetree/bindings/i2c/fsl-i2c.txt b/Documentation/devicetree/bindings/i2c/i2c-mpc.txt
index 1eacd6b20ed5..1eacd6b20ed5 100644
--- a/Documentation/devicetree/bindings/i2c/fsl-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-mpc.txt
diff --git a/Documentation/devicetree/bindings/i2c/mux.txt b/Documentation/devicetree/bindings/i2c/i2c-mux.txt
index af84cce5cd7b..af84cce5cd7b 100644
--- a/Documentation/devicetree/bindings/i2c/mux.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-mux.txt
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt b/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt
new file mode 100644
index 000000000000..f46d928aa73d
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt
@@ -0,0 +1,18 @@
+
+* Marvell MV64XXX I2C controller
+
+Required properties :
+
+ - reg             : Offset and length of the register set for the device
+ - compatible      : Should be "marvell,mv64xxx-i2c"
+ - interrupts      : The interrupt number
+ - clock-frequency : Desired I2C bus clock frequency in Hz.
+
+Examples:
+
+        i2c@11000 {
+                compatible = "marvell,mv64xxx-i2c";
+                reg = <0x11000 0x20>;
+                interrupts = <29>;
+                clock-frequency = <100000>;
+        };
diff --git a/Documentation/devicetree/bindings/i2c/nomadik.txt b/Documentation/devicetree/bindings/i2c/i2c-nomadik.txt
index 72065b0ff680..72065b0ff680 100644
--- a/Documentation/devicetree/bindings/i2c/nomadik.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-nomadik.txt
diff --git a/Documentation/devicetree/bindings/i2c/cavium-i2c.txt b/Documentation/devicetree/bindings/i2c/i2c-octeon.txt
index dced82ebe31d..dced82ebe31d 100644
--- a/Documentation/devicetree/bindings/i2c/cavium-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-octeon.txt
diff --git a/Documentation/devicetree/bindings/i2c/omap-i2c.txt b/Documentation/devicetree/bindings/i2c/i2c-omap.txt
index 56564aa4b444..56564aa4b444 100644
--- a/Documentation/devicetree/bindings/i2c/omap-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-omap.txt
diff --git a/Documentation/devicetree/bindings/i2c/pnx.txt b/Documentation/devicetree/bindings/i2c/i2c-pnx.txt
index fe98ada33ee4..fe98ada33ee4 100644
--- a/Documentation/devicetree/bindings/i2c/pnx.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-pnx.txt
diff --git a/Documentation/devicetree/bindings/i2c/ce4100-i2c.txt b/Documentation/devicetree/bindings/i2c/i2c-pxa-pci-ce4100.txt
index 569b16248514..569b16248514 100644
--- a/Documentation/devicetree/bindings/i2c/ce4100-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-pxa-pci-ce4100.txt
diff --git a/Documentation/devicetree/bindings/i2c/mrvl-i2c.txt b/Documentation/devicetree/bindings/i2c/i2c-pxa.txt
index 0f7945019f6f..12b78ac507e9 100644
--- a/Documentation/devicetree/bindings/i2c/mrvl-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-pxa.txt
@@ -31,21 +31,3 @@ Examples:
                 reg = <0xd4025000 0x1000>;
                 interrupts = <58>;
         };
-
-* Marvell MV64XXX I2C controller
-
-Required properties :
-
- - reg             : Offset and length of the register set for the device
- - compatible      : Should be "marvell,mv64xxx-i2c"
- - interrupts      : The interrupt number
- - clock-frequency : Desired I2C bus clock frequency in Hz.
-
-Examples:
-
-        i2c@11000 {
-                compatible = "marvell,mv64xxx-i2c";
-                reg = <0x11000 0x20>;
-                interrupts = <29>;
-                clock-frequency = <100000>;
-        };
diff --git a/Documentation/devicetree/bindings/i2c/samsung-i2c.txt b/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt
index b6cb5a12c672..b6cb5a12c672 100644
--- a/Documentation/devicetree/bindings/i2c/samsung-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt
diff --git a/Documentation/devicetree/bindings/i2c/sirf-i2c.txt b/Documentation/devicetree/bindings/i2c/i2c-sirf.txt
index 7baf9e133fa8..7baf9e133fa8 100644
--- a/Documentation/devicetree/bindings/i2c/sirf-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-sirf.txt
diff --git a/Documentation/devicetree/bindings/i2c/arm-versatile.txt b/Documentation/devicetree/bindings/i2c/i2c-versatile.txt
index 361d31c51b6f..361d31c51b6f 100644
--- a/Documentation/devicetree/bindings/i2c/arm-versatile.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-versatile.txt
diff --git a/Documentation/devicetree/bindings/i2c/xiic.txt b/Documentation/devicetree/bindings/i2c/i2c-xiic.txt
index ceabbe91ae44..ceabbe91ae44 100644
--- a/Documentation/devicetree/bindings/i2c/xiic.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-xiic.txt
diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
new file mode 100644
index 000000000000..2d88816dd550
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/common.txt
@@ -0,0 +1,23 @@
+Common leds properties.
+
+Optional properties for child nodes:
+- label : The label for this LED.  If omitted, the label is
+  taken from the node name (excluding the unit address).
+
+- linux,default-trigger :  This parameter, if present, is a
+    string defining the trigger assigned to the LED.  Current triggers are:
+     "backlight" - LED will act as a back-light, controlled by the framebuffer
+                   system
+     "default-on" - LED will turn on (but for leds-gpio see "default-state"
+                    property in Documentation/devicetree/bindings/gpio/led.txt)
+     "heartbeat" - LED "double" flashes at a load average based rate
+     "ide-disk" - LED indicates disk activity
+     "timer" - LED flashes at a fixed, configurable rate
+
+Examples:
+
+system-status {
+        label = "Status";
+        linux,default-trigger = "heartbeat";
+        ...
+};
diff --git a/Documentation/devicetree/bindings/gpio/led.txt b/Documentation/devicetree/bindings/leds/leds-gpio.txt
index edc83c1c0d54..df1b3080f6b8 100644
--- a/Documentation/devicetree/bindings/gpio/led.txt
+++ b/Documentation/devicetree/bindings/leds/leds-gpio.txt
@@ -10,16 +10,10 @@ LED sub-node properties:
 - gpios :  Should specify the LED's GPIO, see "gpios property" in
   Documentation/devicetree/bindings/gpio/gpio.txt.  Active low LEDs should be
   indicated using flags in the GPIO specifier.
-- label :  (optional) The label for this LED.  If omitted, the label is
-  taken from the node name (excluding the unit address).
-- linux,default-trigger :  (optional) This parameter, if present, is a
-  string defining the trigger assigned to the LED.  Current triggers are:
-    "backlight" - LED will act as a back-light, controlled by the framebuffer
-                  system
-    "default-on" - LED will turn on, but see "default-state" below
-    "heartbeat" - LED "double" flashes at a load average based rate
-    "ide-disk" - LED indicates disk activity
-    "timer" - LED flashes at a fixed, configurable rate
+- label :  (optional)
+  see Documentation/devicetree/bindings/leds/common.txt
+- linux,default-trigger :  (optional)
+  see Documentation/devicetree/bindings/leds/common.txt
 - default-state:  (optional) The initial state of the LED.  Valid
   values are "on", "off", and "keep".  If the LED is already on or off
   and the default-state property is set the to same value, then no
diff --git a/Documentation/devicetree/bindings/rtc/orion-rtc.txt b/Documentation/devicetree/bindings/rtc/orion-rtc.txt
new file mode 100644
index 000000000000..3bf63ffa5160
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/orion-rtc.txt
@@ -0,0 +1,18 @@
+* Mvebu Real Time Clock
+
+RTC controller for the Kirkwood, the Dove, the Armada 370 and the
+Armada XP SoCs
+
+Required properties:
+- compatible : Should be "marvell,orion-rtc"
+- reg: physical base address of the controller and length of memory mapped
+  region.
+- interrupts: IRQ line for the RTC.
+
+Example:
+
+rtc@10300 {
+        compatible = "marvell,orion-rtc";
+        reg = <0xd0010300 0x20>;
+        interrupts = <50>;
+};
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 9de2b9ff9d6e..770a0193ca1b 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -5,6 +5,7 @@ using them to avoid name-space collisions.
 
 ad      Avionic Design GmbH
 adi     Analog Devices, Inc.
+ak      Asahi Kasei Corp.
 amcc    Applied Micro Circuits Corporation (APM, formally AMCC)
 apm     Applied Micro Circuits Corporation (APM)
 arm     ARM Ltd.
@@ -25,6 +26,7 @@ gef	GE Fanuc Intelligent Platforms Embedded Systems, Inc.
 hp      Hewlett Packard
 ibm     International Business Machines (IBM)
 idt     Integrated Device Technologies, Inc.
+img     Imagination Technologies Ltd.
 intercontrol    Inter Control Group
 linux   Linux-specific binding
 marvell Marvell Technology Group Ltd.
@@ -34,8 +36,9 @@ national	National Semiconductor
 nintendo        Nintendo
 nvidia  NVIDIA
 nxp     NXP Semiconductors
+onnn    ON Semiconductor Corp.
 picochip        Picochip Ltd
-powervr Imagination Technologies
+powervr PowerVR (deprecated, use img)
 qcom    Qualcomm, Inc.
 ramtron Ramtron International
 realtek Realtek Semiconductor Corp.
@@ -45,6 +48,7 @@ schindler	Schindler
 sil     Silicon Image
 simtek
 sirf    SiRF Technology, Inc.
+snps    Synopsys, Inc.
 st      STMicroelectronics
 stericsson      ST-Ericsson
 ti      Texas Instruments
diff --git a/Documentation/devicetree/usage-model.txt b/Documentation/devicetree/usage-model.txt
index dca90fe22a90..ef9d06c9f8fd 100644
--- a/Documentation/devicetree/usage-model.txt
+++ b/Documentation/devicetree/usage-model.txt
@@ -347,7 +347,7 @@ later), which will happily live at the base of the Linux /sys/devices
 tree.  Therefore, if a DT node is at the root of the tree, then it
 really probably is best registered as a platform_device.
 
-Linux board support code calls of_platform_populate(NULL, NULL, NULL)
+Linux board support code calls of_platform_populate(NULL, NULL, NULL, NULL)
 to kick off discovery of devices at the root of the tree.  The
 parameters are all NULL because when starting from the root of the
 tree, there is no need to provide a starting node (the first NULL), a
diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt
index ec9ae6708691..14c3f4f1b617 100644
--- a/Documentation/kbuild/makefiles.txt
+++ b/Documentation/kbuild/makefiles.txt
@@ -1175,15 +1175,16 @@ When kbuild executes, the following steps are followed (roughly):
         in an init section in the image. Platform code *must* copy the
         blob to non-init memory prior to calling unflatten_device_tree().
 
-        Example:
-                #arch/x86/platform/ce4100/Makefile
-                clean-files := *dtb.S
+        To use this command, simply add *.dtb into obj-y or targets, or make
+        some other target depend on %.dtb
 
-                DTC_FLAGS := -p 1024
-                obj-y += foo.dtb.o
+        A central rule exists to create $(obj)/%.dtb from $(src)/%.dts;
+        architecture Makefiles do no need to explicitly write out that rule.
 
-                $(obj)/%.dtb: $(src)/%.dts
-                        $(call cmd,dtc)
+        Example:
+                targets += $(dtb-y)
+                clean-files += *.dtb
+                DTC_FLAGS ?= -p 1024
 
 --- 6.8 Custom kbuild commands
 
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 5f914fca911b..c35baf102f6f 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -292,10 +292,10 @@ zinstall uinstall install: vmlinux
         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 
 %.dtb: scripts
-        $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
+        $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 
 dtbs: scripts
-        $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
+        $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) dtbs
 
 # We use MRPROPER_FILES and CLEAN_FILES now
 archclean:
diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
index 9137df539b61..abfce280f57b 100644
--- a/arch/arm/boot/Makefile
+++ b/arch/arm/boot/Makefile
@@ -15,8 +15,6 @@ ifneq ($(MACHINE),)
 include $(srctree)/$(MACHINE)/Makefile.boot
 endif
 
-include $(srctree)/arch/arm/boot/dts/Makefile
-
 # Note: the following conditions must always be true:
 #   ZRELADDR == virt_to_phys(PAGE_OFFSET + TEXT_OFFSET)
 #   PARAMS_PHYS must be within 4MB of ZRELADDR
@@ -59,16 +57,6 @@ $(obj)/zImage:	$(obj)/compressed/vmlinux FORCE
 
 endif
 
-targets += $(dtb-y)
-
-# Rule to build device tree blobs
-$(obj)/%.dtb: $(src)/dts/%.dts FORCE
-        $(call if_changed_dep,dtc)
-
-$(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y))
-
-clean-files := *.dtb
-
 ifneq ($(LOADADDR),)
   UIMAGE_LOADADDR=$(LOADADDR)
 else
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index fb5b07737ca7..262493752234 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -120,4 +120,12 @@ dtb-$(CONFIG_ARCH_VT8500) += vt8500-bv07.dtb \
         wm8505-ref.dtb \
         wm8650-mid.dtb
 
+targets += dtbs
 endif
+
+# *.dtb used to be generated in the directory above. Clean out the
+# old build results so people don't accidentally use them.
+dtbs: $(addprefix $(obj)/, $(dtb-y))
+        $(Q)rm -f $(obj)/../*.dtb
+
+clean-files := *.dtb
diff --git a/arch/arm/boot/dts/tegra20-seaboard.dts b/arch/arm/boot/dts/tegra20-seaboard.dts
index f0ba901676ac..a20d4ff3fb3c 100644
--- a/arch/arm/boot/dts/tegra20-seaboard.dts
+++ b/arch/arm/boot/dts/tegra20-seaboard.dts
@@ -523,12 +523,12 @@
                 };
 
                 temperature-sensor@4c {
-                        compatible = "nct1008";
+                        compatible = "onnn,nct1008";
                         reg = <0x4c>;
                 };
 
                 magnetometer@c {
-                        compatible = "ak8975";
+                        compatible = "ak,ak8975";
                         reg = <0xc>;
                         interrupt-parent = <&gpio>;
                         interrupts = <109 0x04>; /* gpio PN5 */
diff --git a/arch/arm/include/asm/prom.h b/arch/arm/include/asm/prom.h
index aeae9c609df4..6d65ba222db9 100644
--- a/arch/arm/include/asm/prom.h
+++ b/arch/arm/include/asm/prom.h
@@ -11,6 +11,8 @@
 #ifndef __ASMARM_PROM_H
 #define __ASMARM_PROM_H
 
+#define HAVE_ARCH_DEVTREE_FIXUPS
+
 #ifdef CONFIG_OF
 
 extern struct machine_desc *setup_machine_fdt(unsigned int dt_phys);
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index 560e0df728f8..359f782c747d 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -589,7 +589,7 @@ void __init v2m_dt_init_early(void)
                 return;
 
         /* Confirm board type against DT property, if available */
-        if (of_property_read_u32(allnodes, "arm,hbi", &dt_hbi) == 0) {
+        if (of_property_read_u32(of_allnodes, "arm,hbi", &dt_hbi) == 0) {
                 int site = v2m_get_master_site();
                 u32 id = readl(v2m_sysreg_base + (site == SYS_CFG_SITE_DB2 ?
                                 V2M_SYS_PROCID1 : V2M_SYS_PROCID0));
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 364191f3be43..c95c5cb212fd 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -41,20 +41,24 @@ libs-y		:= arch/arm64/lib/ $(libs-y)
 libs-y          += $(LIBGCC)
 
 # Default target when executing plain make
-KBUILD_IMAGE := Image.gz
+KBUILD_IMAGE    := Image.gz
+KBUILD_DTBS     := dtbs
 
-all:    $(KBUILD_IMAGE)
+all:    $(KBUILD_IMAGE) $(KBUILD_DTBS)
 
 boot := arch/arm64/boot
 
 Image Image.gz: vmlinux
-        $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
+        $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 
 zinstall install: vmlinux
-        $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
+        $(Q)$(MAKE) $(build)=$(boot) $@
 
-%.dtb:
-        $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
+%.dtb: scripts
+        $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
+
+dtbs: scripts
+        $(Q)$(MAKE) $(build)=$(boot)/dts dtbs
 
 # We use MRPROPER_FILES and CLEAN_FILES now
 archclean:
@@ -63,6 +67,7 @@ archclean:
 define archhelp
   echo  '* Image.gz      - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
+  echo  '* dtbs          - Build device tree blobs for enabled boards'
   echo  '  install       - Install uncompressed kernel'
   echo  '  zinstall      - Install compressed kernel'
   echo  '                  Install using (your) ~/bin/installkernel or'
diff --git a/arch/arm64/boot/Makefile b/arch/arm64/boot/Makefile
index eca209b2b0bf..5a0e3ab854a5 100644
--- a/arch/arm64/boot/Makefile
+++ b/arch/arm64/boot/Makefile
@@ -22,9 +22,6 @@ $(obj)/Image: vmlinux FORCE
 $(obj)/Image.gz: $(obj)/Image FORCE
         $(call if_changed,gzip)
 
-$(obj)/%.dtb: $(src)/dts/%.dts
-        $(call cmd,dtc)
-
 install: $(obj)/Image
         $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
         $(obj)/Image System.map "$(INSTALL_PATH)"
@@ -32,5 +29,3 @@ install: $(obj)/Image
 zinstall: $(obj)/Image.gz
         $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
         $(obj)/Image.gz System.map "$(INSTALL_PATH)"
-
-clean-files += *.dtb
diff --git a/arch/arm64/boot/dts/.gitignore b/arch/arm64/boot/dts/.gitignore
new file mode 100644
index 000000000000..b60ed208c779
--- /dev/null
+++ b/arch/arm64/boot/dts/.gitignore
@@ -0,0 +1 @@
+*.dtb
diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
new file mode 100644
index 000000000000..801e2d7fcbc6
--- /dev/null
+++ b/arch/arm64/boot/dts/Makefile
@@ -0,0 +1,5 @@
+targets += dtbs
+
+dtbs: $(addprefix $(obj)/, $(dtb-y))
+
+clean-files := *.dtb
diff --git a/arch/c6x/Makefile b/arch/c6x/Makefile
index a9eb9597e03c..e72eb3417239 100644
--- a/arch/c6x/Makefile
+++ b/arch/c6x/Makefile
@@ -41,7 +41,7 @@ DTB:=$(subst dtbImage.,,$(filter dtbImage.%, $(MAKECMDGOALS)))
 export DTB
 
 ifneq ($(DTB),)
-core-y  += $(boot)/
+core-y  += $(boot)/dts/
 endif
 
 # With make 3.82 we cannot mix normal and wildcard targets
diff --git a/arch/c6x/boot/Makefile b/arch/c6x/boot/Makefile
index 6891257d514c..8734abee548e 100644
--- a/arch/c6x/boot/Makefile
+++ b/arch/c6x/boot/Makefile
@@ -6,25 +6,5 @@ OBJCOPYFLAGS_vmlinux.bin := -O binary
 $(obj)/vmlinux.bin: vmlinux FORCE
         $(call if_changed,objcopy)
 
-DTC_FLAGS ?= -p 1024
-
-ifneq ($(DTB),)
-obj-y += linked_dtb.o
-endif
-
-$(obj)/%.dtb: $(src)/dts/%.dts FORCE
-        $(call if_changed_dep,dtc)
-
-quiet_cmd_cp = CP      $< $@$2
-        cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false)
-
-# Generate builtin.dtb from $(DTB).dtb
-$(obj)/builtin.dtb: $(obj)/$(DTB).dtb
-        $(call if_changed,cp)
-
-$(obj)/linked_dtb.o: $(obj)/builtin.dtb
-
 $(obj)/dtbImage.%: vmlinux
         $(call if_changed,objcopy)
-
-clean-files := $(obj)/*.dtb
diff --git a/arch/c6x/boot/dts/Makefile b/arch/c6x/boot/dts/Makefile
new file mode 100644
index 000000000000..c7528b02d061
--- /dev/null
+++ b/arch/c6x/boot/dts/Makefile
@@ -0,0 +1,20 @@
+#
+# Makefile for device trees
+#
+
+DTC_FLAGS ?= -p 1024
+
+ifneq ($(DTB),)
+obj-y += linked_dtb.o
+endif
+
+quiet_cmd_cp = CP      $< $@$2
+        cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false)
+
+# Generate builtin.dtb from $(DTB).dtb
+$(obj)/builtin.dtb: $(obj)/$(DTB).dtb
+        $(call if_changed,cp)
+
+$(obj)/linked_dtb.o: $(obj)/builtin.dtb
+
+clean-files := *.dtb
diff --git a/arch/c6x/boot/dts/linked_dtb.S b/arch/c6x/boot/dts/linked_dtb.S
new file mode 100644
index 000000000000..cf347f1d16ce
--- /dev/null
+++ b/arch/c6x/boot/dts/linked_dtb.S
@@ -0,0 +1,2 @@
+.section __fdt_blob,"a"
+.incbin "arch/c6x/boot/dts/builtin.dtb"
diff --git a/arch/c6x/boot/linked_dtb.S b/arch/c6x/boot/linked_dtb.S
deleted file mode 100644
index 57a4454eaec3..000000000000
--- a/arch/c6x/boot/linked_dtb.S
+++ /dev/null
@@ -1,2 +0,0 @@
-.section __fdt_blob,"a"
-.incbin "arch/c6x/boot/builtin.dtb"
diff --git a/arch/microblaze/Makefile b/arch/microblaze/Makefile
index b23c40eb7a52..d26fb905ee0a 100644
--- a/arch/microblaze/Makefile
+++ b/arch/microblaze/Makefile
@@ -57,7 +57,7 @@ boot := arch/microblaze/boot
 DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
 
 ifneq ($(DTB),)
-        core-y  += $(boot)/
+        core-y  += $(boot)/dts/
 endif
 
 # defines filename extension depending memory management type
diff --git a/arch/microblaze/boot/Makefile b/arch/microblaze/boot/Makefile
index fa83ea497db7..80fe54fb7ca3 100644
--- a/arch/microblaze/boot/Makefile
+++ b/arch/microblaze/boot/Makefile
@@ -2,21 +2,10 @@
 # arch/microblaze/boot/Makefile
 #
 
-obj-y += linked_dtb.o
-
 targets := linux.bin linux.bin.gz simpleImage.%
 
 OBJCOPYFLAGS := -R .note -R .comment -R .note.gnu.build-id -O binary
 
-# Ensure system.dtb exists
-$(obj)/linked_dtb.o: $(obj)/system.dtb
-
-# Generate system.dtb from $(DTB).dtb
-ifneq ($(DTB),system)
-$(obj)/system.dtb: $(obj)/$(DTB).dtb
-        $(call if_changed,cp)
-endif
-
 $(obj)/linux.bin: vmlinux FORCE
         $(call if_changed,objcopy)
         $(call if_changed,uimage)
@@ -45,10 +34,4 @@ $(obj)/simpleImage.%: vmlinux FORCE
         @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
 
 
-# Rule to build device tree blobs
-DTC_FLAGS := -p 1024
-
-$(obj)/%.dtb: $(src)/dts/%.dts FORCE
-        $(call if_changed_dep,dtc)
-
-clean-files += *.dtb simpleImage.*.unstrip linux.bin.ub
+clean-files += simpleImage.*.unstrip linux.bin.ub
diff --git a/arch/microblaze/boot/dts/Makefile b/arch/microblaze/boot/dts/Makefile
new file mode 100644
index 000000000000..c3b3a5d67b89
--- /dev/null
+++ b/arch/microblaze/boot/dts/Makefile
@@ -0,0 +1,22 @@
+#
+# arch/microblaze/boot/Makefile
+#
+
+obj-y += linked_dtb.o
+
+# Ensure system.dtb exists
+$(obj)/linked_dtb.o: $(obj)/system.dtb
+
+# Generate system.dtb from $(DTB).dtb
+ifneq ($(DTB),system)
+$(obj)/system.dtb: $(obj)/$(DTB).dtb
+        $(call if_changed,cp)
+endif
+
+quiet_cmd_cp = CP      $< $@$2
+        cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false)
+
+# Rule to build device tree blobs
+DTC_FLAGS := -p 1024
+
+clean-files += *.dtb
diff --git a/arch/microblaze/boot/dts/linked_dtb.S b/arch/microblaze/boot/dts/linked_dtb.S
new file mode 100644
index 000000000000..23345af3721f
--- /dev/null
+++ b/arch/microblaze/boot/dts/linked_dtb.S
@@ -0,0 +1,2 @@
+.section __fdt_blob,"a"
+.incbin "arch/microblaze/boot/dts/system.dtb"
diff --git a/arch/microblaze/boot/linked_dtb.S b/arch/microblaze/boot/linked_dtb.S
deleted file mode 100644
index cb2b537aebee..000000000000
--- a/arch/microblaze/boot/linked_dtb.S
+++ /dev/null
@@ -1,3 +0,0 @@
-.section __fdt_blob,"a"
-.incbin "arch/microblaze/boot/system.dtb"
-
diff --git a/arch/mips/cavium-octeon/Makefile b/arch/mips/cavium-octeon/Makefile
index bc96e2908f14..6e927cf20df2 100644
--- a/arch/mips/cavium-octeon/Makefile
+++ b/arch/mips/cavium-octeon/Makefile
@@ -24,9 +24,6 @@ DTB_FILES = $(patsubst %.dts, %.dtb, $(DTS_FILES))
 
 obj-y += $(patsubst %.dts, %.dtb.o, $(DTS_FILES))
 
-$(obj)/%.dtb: $(src)/%.dts FORCE
-        $(call if_changed_dep,dtc)
-
 # Let's keep the .dtb files around in case we want to look at them.
 .SECONDARY:  $(addprefix $(obj)/, $(DTB_FILES))
 
diff --git a/arch/mips/lantiq/dts/Makefile b/arch/mips/lantiq/dts/Makefile
index 674fca45f72d..6fa72dd641b2 100644
--- a/arch/mips/lantiq/dts/Makefile
+++ b/arch/mips/lantiq/dts/Makefile
@@ -1,4 +1 @@
 obj-$(CONFIG_DT_EASY50712) := easy50712.dtb.o
-
-$(obj)/%.dtb: $(obj)/%.dts
-        $(call if_changed,dtc)
diff --git a/arch/mips/netlogic/dts/Makefile b/arch/mips/netlogic/dts/Makefile
index 67ae3fe296f0..d117d46413aa 100644
--- a/arch/mips/netlogic/dts/Makefile
+++ b/arch/mips/netlogic/dts/Makefile
@@ -1,4 +1 @@
 obj-$(CONFIG_DT_XLP_EVP) := xlp_evp.dtb.o
-
-$(obj)/%.dtb: $(obj)/%.dts
-        $(call if_changed,dtc)
diff --git a/arch/openrisc/Makefile b/arch/openrisc/Makefile
index 966886c8daf5..4739b8302a58 100644
--- a/arch/openrisc/Makefile
+++ b/arch/openrisc/Makefile
@@ -50,6 +50,6 @@ BUILTIN_DTB := y
 else
 BUILTIN_DTB := n
 endif
-core-$(BUILTIN_DTB) += arch/openrisc/boot/
+core-$(BUILTIN_DTB) += arch/openrisc/boot/dts/
 
 all: vmlinux
diff --git a/arch/openrisc/boot/Makefile b/arch/openrisc/boot/dts/Makefile
index 09958358601a..b092d30d6c23 100644
--- a/arch/openrisc/boot/Makefile
+++ b/arch/openrisc/boot/dts/Makefile
@@ -1,5 +1,3 @@
-
-
 ifneq '$(CONFIG_OPENRISC_BUILTIN_DTB)' '""'
 BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_OPENRISC_BUILTIN_DTB)).dtb.o
 else
@@ -10,6 +8,3 @@ obj-y += $(BUILTIN_DTB)
 clean-files := *.dtb.S
 
 #DTC_FLAGS ?= -p 1024
-
-$(obj)/%.dtb: $(src)/dts/%.dts FORCE
-        $(call if_changed_dep,dtc)
diff --git a/arch/powerpc/platforms/powermac/pfunc_core.c b/arch/powerpc/platforms/powermac/pfunc_core.c
index b0c3777528a1..d588e48dff74 100644
--- a/arch/powerpc/platforms/powermac/pfunc_core.c
+++ b/arch/powerpc/platforms/powermac/pfunc_core.c
@@ -686,7 +686,7 @@ static int pmf_add_functions(struct pmf_device *dev, void *driverdata)
         int count = 0;
 
         for (pp = dev->node->properties; pp != 0; pp = pp->next) {
-                char *name;
+                const char *name;
                 if (strncmp(pp->name, PP_PREFIX, plen) != 0)
                         continue;
                 name = pp->name + plen;
diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index 39f71fba9b38..2f4668136b20 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -281,12 +281,11 @@ static struct property *new_property(const char *name, const int length,
         if (!new)
                 return NULL;
 
-        if (!(new->name = kmalloc(strlen(name) + 1, GFP_KERNEL)))
+        if (!(new->name = kstrdup(name, GFP_KERNEL)))
                 goto cleanup;
         if (!(new->value = kmalloc(length + 1, GFP_KERNEL)))
                 goto cleanup;
 
-        strcpy(new->name, name);
         memcpy(new->value, value, length);
         *(((char *)new->value) + length) = 0;
         new->length = length;
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index ffb93ae9379b..01b62a62c635 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -136,7 +136,7 @@ static void __init setup_pci_atmu(struct pci_controller *hose,
         u32 pcicsrbar = 0, pcicsrbar_sz;
         u32 piwar = PIWAR_EN | PIWAR_PF | PIWAR_TGI_LOCAL |
                         PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP;
-        char *name = hose->dn->full_name;
+        const char *name = hose->dn->full_name;
         const u64 *reg;
         int len;
 
diff --git a/arch/powerpc/sysdev/scom.c b/arch/powerpc/sysdev/scom.c
index 702256a1ca11..9193e12df695 100644
--- a/arch/powerpc/sysdev/scom.c
+++ b/arch/powerpc/sysdev/scom.c
@@ -157,7 +157,7 @@ static int scom_debug_init_one(struct dentry *root, struct device_node *dn,
         ent->map = SCOM_MAP_INVALID;
         spin_lock_init(&ent->lock);
         snprintf(ent->name, 8, "scom%d", i);
-        ent->blob.data = dn->full_name;
+        ent->blob.data = (void*) dn->full_name;
         ent->blob.size = strlen(dn->full_name);
 
         dir = debugfs_create_dir(ent->name, root);
diff --git a/arch/sparc/kernel/pci_impl.h b/arch/sparc/kernel/pci_impl.h
index 918a2031c8bb..5f688531f48c 100644
--- a/arch/sparc/kernel/pci_impl.h
+++ b/arch/sparc/kernel/pci_impl.h
@@ -88,7 +88,7 @@ struct pci_pbm_info {
         int                             chip_revision;
 
         /* Name used for top-level resources. */
-        char                            *name;
+        const char                      *name;
 
         /* OBP specific information. */
         struct platform_device          *op;
diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c
index bffd5501ac2d..15da1ac7cf9e 100644
--- a/drivers/i2c/busses/i2c-ocores.c
+++ b/drivers/i2c/busses/i2c-ocores.c
@@ -9,10 +9,6 @@
  * kind, whether express or implied.
  */
 
-/*
- * This driver can be used from the device tree, see
- *     Documentation/devicetree/bindings/i2c/ocore-i2c.txt
- */
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
diff --git a/drivers/of/base.c b/drivers/of/base.c
index af3b22ac7627..538e3cfad23e 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -45,7 +45,8 @@ struct alias_prop {
 
 static LIST_HEAD(aliases_lookup);
 
-struct device_node *allnodes;
+struct device_node *of_allnodes;
+EXPORT_SYMBOL(of_allnodes);
 struct device_node *of_chosen;
 struct device_node *of_aliases;
 
@@ -199,7 +200,7 @@ struct device_node *of_find_all_nodes(struct device_node *prev)
         struct device_node *np;
 
         read_lock(&devtree_lock);
-        np = prev ? prev->allnext : allnodes;
+        np = prev ? prev->allnext : of_allnodes;
         for (; np != NULL; np = np->allnext)
                 if (of_node_get(np))
                         break;
@@ -422,7 +423,7 @@ EXPORT_SYMBOL(of_get_child_by_name);
  */
 struct device_node *of_find_node_by_path(const char *path)
 {
-        struct device_node *np = allnodes;
+        struct device_node *np = of_allnodes;
 
         read_lock(&devtree_lock);
         for (; np; np = np->allnext) {
@@ -452,7 +453,7 @@ struct device_node *of_find_node_by_name(struct device_node *from,
         struct device_node *np;
 
         read_lock(&devtree_lock);
-        np = from ? from->allnext : allnodes;
+        np = from ? from->allnext : of_allnodes;
         for (; np; np = np->allnext)
                 if (np->name && (of_node_cmp(np->name, name) == 0)
                     && of_node_get(np))
@@ -481,7 +482,7 @@ struct device_node *of_find_node_by_type(struct device_node *from,
         struct device_node *np;
 
         read_lock(&devtree_lock);
-        np = from ? from->allnext : allnodes;
+        np = from ? from->allnext : of_allnodes;
         for (; np; np = np->allnext)
                 if (np->type && (of_node_cmp(np->type, type) == 0)
                     && of_node_get(np))
@@ -512,7 +513,7 @@ struct device_node *of_find_compatible_node(struct device_node *from,
         struct device_node *np;
 
         read_lock(&devtree_lock);
-        np = from ? from->allnext : allnodes;
+        np = from ? from->allnext : of_allnodes;
         for (; np; np = np->allnext) {
                 if (type
                     && !(np->type && (of_node_cmp(np->type, type) == 0)))
@@ -545,7 +546,7 @@ struct device_node *of_find_node_with_property(struct device_node *from,
         struct property *pp;
 
         read_lock(&devtree_lock);
-        np = from ? from->allnext : allnodes;
+        np = from ? from->allnext : of_allnodes;
         for (; np; np = np->allnext) {
                 for (pp = np->properties; pp; pp = pp->next) {
                         if (of_prop_cmp(pp->name, prop_name) == 0) {
@@ -594,27 +595,35 @@ const struct of_device_id *of_match_node(const struct of_device_id *matches,
 EXPORT_SYMBOL(of_match_node);
 
 /**
- *      of_find_matching_node - Find a node based on an of_device_id match
- *                              table.
+ *      of_find_matching_node_and_match - Find a node based on an of_device_id
+ *                                        match table.
  *      @from:          The node to start searching from or NULL, the node
  *                      you pass will not be searched, only the next one
  *                      will; typically, you pass what the previous call
  *                      returned. of_node_put() will be called on it
  *      @matches:       array of of device match structures to search in
+ *      @match          Updated to point at the matches entry which matched
  *
  *      Returns a node pointer with refcount incremented, use
  *      of_node_put() on it when done.
  */
-struct device_node *of_find_matching_node(struct device_node *from,
-                                          const struct of_device_id *matches)
+struct device_node *of_find_matching_node_and_match(struct device_node *from,
+                                        const struct of_device_id *matches,
+                                        const struct of_device_id **match)
 {
         struct device_node *np;
 
+        if (match)
+                *match = NULL;
+
         read_lock(&devtree_lock);
-        np = from ? from->allnext : allnodes;
+        np = from ? from->allnext : of_allnodes;
         for (; np; np = np->allnext) {
-                if (of_match_node(matches, np) && of_node_get(np))
+                if (of_match_node(matches, np) && of_node_get(np)) {
+                        if (match)
+                                *match = matches;
                         break;
+                }
         }
         of_node_put(from);
         read_unlock(&devtree_lock);
@@ -661,7 +670,7 @@ struct device_node *of_find_node_by_phandle(phandle handle)
         struct device_node *np;
 
         read_lock(&devtree_lock);
-        for (np = allnodes; np; np = np->allnext)
+        for (np = of_allnodes; np; np = np->allnext)
                 if (np->phandle == handle)
                         break;
         of_node_get(np);
@@ -671,12 +680,89 @@ struct device_node *of_find_node_by_phandle(phandle handle)
 EXPORT_SYMBOL(of_find_node_by_phandle);
 
 /**
+ * of_property_read_u8_array - Find and read an array of u8 from a property.
+ *
+ * @np:         device node from which the property value is to be read.
+ * @propname:   name of the property to be searched.
+ * @out_value:  pointer to return value, modified only if return value is 0.
+ * @sz:         number of array elements to read
+ *
+ * Search for a property in a device node and read 8-bit value(s) from
+ * it. Returns 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+ * dts entry of array should be like:
+ *      property = /bits/ 8 <0x50 0x60 0x70>;
+ *
+ * The out_value is modified only if a valid u8 value can be decoded.
+ */
+int of_property_read_u8_array(const struct device_node *np,
+                        const char *propname, u8 *out_values, size_t sz)
+{
+        struct property *prop = of_find_property(np, propname, NULL);
+        const u8 *val;
+
+        if (!prop)
+                return -EINVAL;
+        if (!prop->value)
+                return -ENODATA;
+        if ((sz * sizeof(*out_values)) > prop->length)
+                return -EOVERFLOW;
+
+        val = prop->value;
+        while (sz--)
+                *out_values++ = *val++;
+        return 0;
+}
+EXPORT_SYMBOL_GPL(of_property_read_u8_array);
+
+/**
+ * of_property_read_u16_array - Find and read an array of u16 from a property.
+ *
+ * @np:         device node from which the property value is to be read.
+ * @propname:   name of the property to be searched.
+ * @out_value:  pointer to return value, modified only if return value is 0.
+ * @sz:         number of array elements to read
+ *
+ * Search for a property in a device node and read 16-bit value(s) from
+ * it. Returns 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+ * dts entry of array should be like:
+ *      property = /bits/ 16 <0x5000 0x6000 0x7000>;
+ *
+ * The out_value is modified only if a valid u16 value can be decoded.
+ */
+int of_property_read_u16_array(const struct device_node *np,
+                        const char *propname, u16 *out_values, size_t sz)
+{
+        struct property *prop = of_find_property(np, propname, NULL);
+        const __be16 *val;
+
+        if (!prop)
+                return -EINVAL;
+        if (!prop->value)
+                return -ENODATA;
+        if ((sz * sizeof(*out_values)) > prop->length)
+                return -EOVERFLOW;
+
+        val = prop->value;
+        while (sz--)
+                *out_values++ = be16_to_cpup(val++);
+        return 0;
+}
+EXPORT_SYMBOL_GPL(of_property_read_u16_array);
+
+/**
  * of_property_read_u32_array - Find and read an array of 32 bit integers
  * from a property.
  *
  * @np:         device node from which the property value is to be read.
  * @propname:   name of the property to be searched.
  * @out_value:  pointer to return value, modified only if return value is 0.
+ * @sz:         number of array elements to read
  *
  * Search for a property in a device node and read 32-bit value(s) from
  * it. Returns 0 on success, -EINVAL if the property does not exist,
@@ -893,8 +979,8 @@ EXPORT_SYMBOL_GPL(of_property_count_strings);
  * Returns the device_node pointer with refcount incremented.  Use
  * of_node_put() on it when done.
  */
-struct device_node *
-of_parse_phandle(struct device_node *np, const char *phandle_name, int index)
+struct device_node *of_parse_phandle(const struct device_node *np,
+                                     const char *phandle_name, int index)
 {
         const __be32 *phandle;
         int size;
@@ -1169,9 +1255,9 @@ void of_attach_node(struct device_node *np)
 
         write_lock_irqsave(&devtree_lock, flags);
         np->sibling = np->parent->child;
-        np->allnext = allnodes;
+        np->allnext = of_allnodes;
         np->parent->child = np;
-        allnodes = np;
+        of_allnodes = np;
         write_unlock_irqrestore(&devtree_lock, flags);
 }
 
@@ -1192,11 +1278,11 @@ void of_detach_node(struct device_node *np)
         if (!parent)
                 goto out_unlock;
 
-        if (allnodes == np)
-                allnodes = np->allnext;
+        if (of_allnodes == np)
+                of_allnodes = np->allnext;
         else {
                 struct device_node *prev;
-                for (prev = allnodes;
+                for (prev = of_allnodes;
                      prev->allnext != np;
                      prev = prev->allnext)
                         ;
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 91a375fb6ae6..a65c39c473bf 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -186,6 +186,8 @@ static unsigned long unflatten_dt_node(struct boot_param_header *blob,
                          */
                         fpsize = 1;
                         allocl = 2;
+                        l = 1;
+                        *pathp = '\0';
                 } else {
                         /* account for '/' and path size minus terminal 0
                          * already in 'l'
@@ -198,10 +200,10 @@ static unsigned long unflatten_dt_node(struct boot_param_header *blob,
         np = unflatten_dt_alloc(&mem, sizeof(struct device_node) + allocl,
                                 __alignof__(struct device_node));
         if (allnextpp) {
+                char *fn;
                 memset(np, 0, sizeof(*np));
-                np->full_name = ((char *)np) + sizeof(struct device_node);
+                np->full_name = fn = ((char *)np) + sizeof(*np);
                 if (new_format) {
-                        char *fn = np->full_name;
                         /* rebuild full path for new format */
                         if (dad && dad->parent) {
                                 strcpy(fn, dad->full_name);
@@ -215,9 +217,9 @@ static unsigned long unflatten_dt_node(struct boot_param_header *blob,
                                 fn += strlen(fn);
                         }
                         *(fn++) = '/';
-                        memcpy(fn, pathp, l);
-                } else
-                        memcpy(np->full_name, pathp, l);
+                }
+                memcpy(fn, pathp, l);
+
                 prev_pp = &np->properties;
                 **allnextpp = np;
                 *allnextpp = &np->allnext;
@@ -459,7 +461,7 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node,
 
         do {
                 u32 tag = be32_to_cpup((__be32 *)p);
-                char *pathp;
+                const char *pathp;
 
                 p += 4;
                 if (tag == OF_DT_END_NODE) {
@@ -487,7 +489,7 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node,
                 pathp = (char *)p;
                 p = ALIGN(p + strlen(pathp) + 1, 4);
                 if ((*pathp) == '/') {
-                        char *lp, *np;
+                        const char *lp, *np;
                         for (lp = NULL, np = pathp; *np; np++)
                                 if ((*np) == '/')
                                         lp = np+1;
@@ -710,7 +712,7 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
  */
 void __init unflatten_device_tree(void)
 {
-        __unflatten_device_tree(initial_boot_params, &allnodes,
+        __unflatten_device_tree(initial_boot_params, &of_allnodes,
                                 early_init_dt_alloc_memory_arch);
 
         /* Get pointer to "/chosen" and "/aliasas" nodes for use everywhere */
diff --git a/drivers/of/of_i2c.c b/drivers/of/of_i2c.c
index 3550f3bf4f92..b667264222cc 100644
--- a/drivers/of/of_i2c.c
+++ b/drivers/of/of_i2c.c
@@ -29,7 +29,7 @@ void of_i2c_register_devices(struct i2c_adapter *adap)
 
         dev_dbg(&adap->dev, "of_i2c: walking child nodes\n");
 
-        for_each_child_of_node(adap->dev.of_node, node) {
+        for_each_available_child_of_node(adap->dev.of_node, node) {
                 struct i2c_board_info info = {};
                 struct dev_archdata dev_ad = {};
                 const __be32 *addr;
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index 8e6c25f35040..83ca06f4312b 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -53,7 +53,7 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
                 return rc;
 
         /* Loop over the child nodes and register a phy_device for each one */
-        for_each_child_of_node(np, child) {
+        for_each_available_child_of_node(np, child) {
                 const __be32 *paddr;
                 u32 addr;
                 int len;
diff --git a/drivers/of/pdt.c b/drivers/of/pdt.c
index 07cc1d678e4d..37b56fd716e6 100644
--- a/drivers/of/pdt.c
+++ b/drivers/of/pdt.c
@@ -241,15 +241,15 @@ void __init of_pdt_build_devicetree(phandle root_node, struct of_pdt_ops *ops)
         BUG_ON(!ops);
         of_pdt_prom_ops = ops;
 
-        allnodes = of_pdt_create_node(root_node, NULL);
+        of_allnodes = of_pdt_create_node(root_node, NULL);
 #if defined(CONFIG_SPARC)
-        allnodes->path_component_name = "";
+        of_allnodes->path_component_name = "";
 #endif
-        allnodes->full_name = "/";
+        of_allnodes->full_name = "/";
 
-        nextp = &allnodes->allnext;
-        allnodes->child = of_pdt_build_tree(allnodes,
-                        of_pdt_prom_ops->getchild(allnodes->phandle), &nextp);
+        nextp = &of_allnodes->allnext;
+        of_allnodes->child = of_pdt_build_tree(of_allnodes,
+                        of_pdt_prom_ops->getchild(of_allnodes->phandle), &nextp);
 
         /* Get pointer to "/chosen" and "/aliasas" nodes for use everywhere */
         of_alias_scan(kernel_tree_alloc);
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 84c2861d6f4d..d3e64080c409 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -819,7 +819,7 @@ static void of_register_spi_devices(struct spi_master *master)
         if (!master->dev.of_node)
                 return;
 
-        for_each_child_of_node(master->dev.of_node, nc) {
+        for_each_available_child_of_node(master->dev.of_node, nc) {
                 /* Alloc an spi_device */
                 spi = spi_alloc_device(master);
                 if (!spi) {
diff --git a/include/linux/of.h b/include/linux/of.h
index b4e50d56fc74..60053bd7e79a 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -46,7 +46,7 @@ struct device_node {
         const char *name;
         const char *type;
         phandle phandle;
-        char    *full_name;
+        const char *full_name;
 
         struct  property *properties;
         struct  property *deadprops;    /* removed properties */
@@ -60,7 +60,7 @@ struct device_node {
         unsigned long _flags;
         void    *data;
 #if defined(CONFIG_SPARC)
-        char    *path_component_name;
+        const char *path_component_name;
         unsigned int unique_id;
         struct of_irq_controller *irq_trans;
 #endif
@@ -88,14 +88,14 @@ static inline void of_node_put(struct device_node *node) { }
 #ifdef CONFIG_OF
 
 /* Pointer for first entry in chain of all nodes. */
-extern struct device_node *allnodes;
+extern struct device_node *of_allnodes;
 extern struct device_node *of_chosen;
 extern struct device_node *of_aliases;
 extern rwlock_t devtree_lock;
 
 static inline bool of_have_populated_dt(void)
 {
-        return allnodes != NULL;
+        return of_allnodes != NULL;
 }
 
 static inline bool of_node_is_root(const struct device_node *node)
@@ -179,11 +179,22 @@ extern struct device_node *of_find_compatible_node(struct device_node *from,
 #define for_each_compatible_node(dn, type, compatible) \
         for (dn = of_find_compatible_node(NULL, type, compatible); dn; \
              dn = of_find_compatible_node(dn, type, compatible))
-extern struct device_node *of_find_matching_node(struct device_node *from,
-        const struct of_device_id *matches);
+extern struct device_node *of_find_matching_node_and_match(
+        struct device_node *from,
+        const struct of_device_id *matches,
+        const struct of_device_id **match);
+static inline struct device_node *of_find_matching_node(
+        struct device_node *from,
+        const struct of_device_id *matches)
+{
+        return of_find_matching_node_and_match(from, matches, NULL);
+}
 #define for_each_matching_node(dn, matches) \
         for (dn = of_find_matching_node(NULL, matches); dn; \
              dn = of_find_matching_node(dn, matches))
+#define for_each_matching_node_and_match(dn, matches, match) \
+        for (dn = of_find_matching_node_and_match(NULL, matches, match); \
+             dn; dn = of_find_matching_node_and_match(dn, matches, match))
 extern struct device_node *of_find_node_by_path(const char *path);
 extern struct device_node *of_find_node_by_phandle(phandle handle);
 extern struct device_node *of_get_parent(const struct device_node *node);
@@ -223,6 +234,10 @@ extern struct device_node *of_find_node_with_property(
 extern struct property *of_find_property(const struct device_node *np,
                                          const char *name,
                                          int *lenp);
+extern int of_property_read_u8_array(const struct device_node *np,
+                        const char *propname, u8 *out_values, size_t sz);
+extern int of_property_read_u16_array(const struct device_node *np,
+                        const char *propname, u16 *out_values, size_t sz);
 extern int of_property_read_u32_array(const struct device_node *np,
                                       const char *propname,
                                       u32 *out_values,
@@ -255,7 +270,7 @@ extern int of_n_size_cells(struct device_node *np);
 extern const struct of_device_id *of_match_node(
         const struct of_device_id *matches, const struct device_node *node);
 extern int of_modalias_node(struct device_node *node, char *modalias, int len);
-extern struct device_node *of_parse_phandle(struct device_node *np,
+extern struct device_node *of_parse_phandle(const struct device_node *np,
                                             const char *phandle_name,
                                             int index);
 extern int of_parse_phandle_with_args(struct device_node *np,
@@ -364,6 +379,18 @@ static inline struct device_node *of_find_compatible_node(
         return NULL;
 }
 
+static inline int of_property_read_u8_array(const struct device_node *np,
+                        const char *propname, u8 *out_values, size_t sz)
+{
+        return -ENOSYS;
+}
+
+static inline int of_property_read_u16_array(const struct device_node *np,
+                        const char *propname, u16 *out_values, size_t sz)
+{
+        return -ENOSYS;
+}
+
 static inline int of_property_read_u32_array(const struct device_node *np,
                                              const char *propname,
                                              u32 *out_values, size_t sz)
@@ -411,7 +438,7 @@ static inline int of_property_match_string(struct device_node *np,
         return -ENOSYS;
 }
 
-static inline struct device_node *of_parse_phandle(struct device_node *np,
+static inline struct device_node *of_parse_phandle(const struct device_node *np,
                                                    const char *phandle_name,
                                                    int index)
 {
@@ -470,6 +497,20 @@ static inline bool of_property_read_bool(const struct device_node *np,
         return prop ? true : false;
 }
 
+static inline int of_property_read_u8(const struct device_node *np,
+                                       const char *propname,
+                                       u8 *out_value)
+{
+        return of_property_read_u8_array(np, propname, out_value, 1);
+}
+
+static inline int of_property_read_u16(const struct device_node *np,
+                                       const char *propname,
+                                       u16 *out_value)
+{
+        return of_property_read_u16_array(np, propname, out_value, 1);
+}
+
 static inline int of_property_read_u32(const struct device_node *np,
                                        const char *propname,
                                        u32 *out_value)
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 0be6f110cce7..bdf42fdf64c9 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -266,6 +266,9 @@ $(obj)/%.dtb.S: $(obj)/%.dtb
 quiet_cmd_dtc = DTC     $@
 cmd_dtc = $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile) $<
 
+$(obj)/%.dtb: $(src)/%.dts FORCE
+        $(call if_changed_dep,dtc)
+
 # Bzip2
 # ---------------------------------------------------------------------------
 
diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile
index 6d1c6bb9f224..2a48022c41e7 100644
--- a/scripts/dtc/Makefile
+++ b/scripts/dtc/Makefile
@@ -27,3 +27,5 @@ HOSTCFLAGS_dtc-parser.tab.o := $(HOSTCFLAGS_DTC)
 # dependencies on generated files need to be listed explicitly
 $(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h
 
+# generated files need to be cleaned explicitly
+clean-files     := dtc-lexer.lex.c dtc-parser.tab.c dtc-parser.tab.h