Merge tag 'devicetree-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull DeviceTree updates from Rob Herring:

 - vsprintf format specifier %pOF for device_node's. This will enable us
   to stop storing the full node names. Conversion of users will happen
   next cycle.

 - Update documentation to point to DT specification instead of ePAPR.

 - Split out graph and property functions to a separate file.

 - New of-graph functions for ALSA

 - Add vendor prefixes for RISC-V, Linksys, iWave Systems, Roofull,
   Itead, and BananaPi.

 - Improve dtx_diff utility filename printing.

* tag 'devicetree-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (32 commits)
  of: document /sys/firmware/fdt
  dt-bindings: Add RISC-V vendor prefix
  vsprintf: Add %p extension "%pOF" for device tree
  of: find_node_by_full_name rewrite to compare each level
  of: use kbasename instead of open coding
  dt-bindings: thermal: add file extension to brcm,ns-thermal
  of: update ePAPR references to point to Devicetree Specification
  scripts/dtc: dtx_diff - Show real file names in diff header
  of: detect invalid phandle in overlay
  of: be consistent in form of file mode
  of: make __of_attach_node() static
  of: address.c header comment typo
  of: fdt.c header comment typo
  of: make of_fdt_is_compatible() static
  dt-bindings: display-timing.txt convert non-ascii characters to ascii
  Documentation: remove overlay-notes reference to non-existent file
  dt-bindings: usb: exynos-usb: Add missing required VDD properties
  dt-bindings: Add vendor prefix for Linksys
  MAINTAINERS: add device tree ABI documentation file
  of: Add vendor prefix for iWave Systems Technologies Pvt. Ltd
  ...

49 files changed, 1212 insertions, 911 deletions

diff --git a/Documentation/ABI/testing/sysfs-firmware-ofw b/Documentation/ABI/testing/sysfs-firmware-ofw
index f562b188e71d..edcab3ccfcc0 100644
--- a/Documentation/ABI/testing/sysfs-firmware-ofw
+++ b/Documentation/ABI/testing/sysfs-firmware-ofw
@@ -1,6 +1,6 @@
 What:		/sys/firmware/devicetree/*
 Date:		November 2013
-Contact:	Grant Likely <grant.likely@linaro.org>
+Contact:	Grant Likely <grant.likely@arm.com>, devicetree@vger.kernel.org
 Description:
 		When using OpenFirmware or a Flattened Device Tree to enumerate
 		hardware, the device tree structure will be exposed in this
@@ -26,3 +26,27 @@ Description:
 		name plus address). Properties are represented as files
 		in the directory. The contents of each file is the exact
 		binary data from the device tree.
+
+What:		/sys/firmware/fdt
+Date:		February 2015
+KernelVersion:	3.19
+Contact:	Frank Rowand <frowand.list@gmail.com>, devicetree@vger.kernel.org
+Description:
+		Exports the FDT blob that was passed to the kernel by
+		the bootloader. This allows userland applications such
+		as kexec to access the raw binary. This blob is also
+		useful when debugging since it contains any changes
+		made to the blob by the bootloader.
+
+		The fact that this node does not reside under
+		/sys/firmware/device-tree is deliberate: FDT is also used
+		on arm64 UEFI/ACPI systems to communicate just the UEFI
+		and ACPI entry points, but the FDT is never unflattened
+		and used to configure the system.
+
+		A CRC32 checksum is calculated over the entire FDT
+		blob, and verified at late_initcall time. The sysfs
+		entry is instantiated only if the checksum is valid,
+		i.e., if the FDT blob has not been modified in the mean
+		time. Otherwise, a warning is printed.
+Users:		kexec, debugging
diff --git a/Documentation/devicetree/bindings/arm/cci.txt b/Documentation/devicetree/bindings/arm/cci.txt
index 0f2153e8fa7e..9600761f2d5b 100644
--- a/Documentation/devicetree/bindings/arm/cci.txt
+++ b/Documentation/devicetree/bindings/arm/cci.txt
@@ -11,13 +11,6 @@ clusters, through memory mapped interface, with a global control register
 space and multiple sets of interface control registers, one per slave
 interface.
 
-Bindings for the CCI node follow the ePAPR standard, available from:
-
-www.power.org/documentation/epapr-version-1-1/
-
-with the addition of the bindings described in this document which are
-specific to ARM.
-
 * CCI interconnect node
 
 	Description: Describes a CCI cache coherent Interconnect component
@@ -50,10 +43,10 @@ specific to ARM.
 			    as a tuple of cells, containing child address,
 			    parent address and the size of the region in the
 			    child address space.
-		Definition: A standard property. Follow rules in the ePAPR for
-			    hierarchical bus addressing. CCI interfaces
-			    addresses refer to the parent node addressing
-			    scheme to declare their register bases.
+		Definition: A standard property. Follow rules in the Devicetree
+			    Specification for hierarchical bus addressing. CCI
+			    interfaces addresses refer to the parent node
+			    addressing scheme to declare their register bases.
 
 	CCI interconnect node can define the following child nodes:
 
diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt
index ad1913bea8d7..a44253cad269 100644
--- a/Documentation/devicetree/bindings/arm/cpus.txt
+++ b/Documentation/devicetree/bindings/arm/cpus.txt
@@ -6,9 +6,9 @@ The device tree allows to describe the layout of CPUs in a system through
 the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
 defining properties for every cpu.
 
-Bindings for CPU nodes follow the ePAPR v1.1 standard, available from:
+Bindings for CPU nodes follow the Devicetree Specification, available from:
 
-https://www.power.org/documentation/epapr-version-1-1/
+https://www.devicetree.org/specifications/
 
 with updates for 32-bit and 64-bit ARM systems provided in this document.
 
@@ -16,8 +16,8 @@ with updates for 32-bit and 64-bit ARM systems provided in this document.
 Convention used in this document
 ================================
 
-This document follows the conventions described in the ePAPR v1.1, with
-the addition:
+This document follows the conventions described in the Devicetree
+Specification, with the addition:
 
 - square brackets define bitfields, eg reg[7:0] value of the bitfield in
   the reg property contained in bits 7 down to 0
@@ -26,8 +26,9 @@ the addition:
 cpus and cpu node bindings definition
 =====================================
 
-The ARM architecture, in accordance with the ePAPR, requires the cpus and cpu
-nodes to be present and contain the properties described below.
+The ARM architecture, in accordance with the Devicetree Specification,
+requires the cpus and cpu nodes to be present and contain the properties
+described below.
 
 - cpus node
 
diff --git a/Documentation/devicetree/bindings/arm/idle-states.txt b/Documentation/devicetree/bindings/arm/idle-states.txt
index b8e41c148a3c..7a591333f2b1 100644
--- a/Documentation/devicetree/bindings/arm/idle-states.txt
+++ b/Documentation/devicetree/bindings/arm/idle-states.txt
@@ -695,5 +695,5 @@ cpus {
 [4] ARM Architecture Reference Manuals
     http://infocenter.arm.com/help/index.jsp
 
-[5] ePAPR standard
-    https://www.power.org/documentation/epapr-version-1-1/
+[5] Devicetree Specification
+    https://www.devicetree.org/specifications/
diff --git a/Documentation/devicetree/bindings/arm/l2c2x0.txt b/Documentation/devicetree/bindings/arm/l2c2x0.txt
index d9650c1788f4..fbe6cb21f4cf 100644
--- a/Documentation/devicetree/bindings/arm/l2c2x0.txt
+++ b/Documentation/devicetree/bindings/arm/l2c2x0.txt
@@ -4,8 +4,8 @@ ARM cores often have a separate L2C210/L2C220/L2C310 (also known as PL210/PL220/
 PL310 and variants) based level 2 cache controller. All these various implementations
 of the L2 cache controller have compatible programming models (Note 1).
 Some of the properties that are just prefixed "cache-*" are taken from section
-3.7.3 of the ePAPR v1.1 specification which can be found at:
-https://www.power.org/wp-content/uploads/2012/06/Power_ePAPR_APPROVED_v1.1.pdf
+3.7.3 of the Devicetree Specification which can be found at:
+https://www.devicetree.org/specifications/
 
 The ARM L2 cache representation in the device tree should be done as follows:
 
diff --git a/Documentation/devicetree/bindings/arm/topology.txt b/Documentation/devicetree/bindings/arm/topology.txt
index 1061faf5f602..de9eb0486630 100644
--- a/Documentation/devicetree/bindings/arm/topology.txt
+++ b/Documentation/devicetree/bindings/arm/topology.txt
@@ -29,9 +29,9 @@ corresponding to the system hierarchy; syntactically they are defined as device
 tree nodes.
 
 The remainder of this document provides the topology bindings for ARM, based
-on the ePAPR standard, available from:
+on the Devicetree Specification, available from:
 
-http://www.power.org/documentation/epapr-version-1-1/
+https://www.devicetree.org/specifications/
 
 If not stated otherwise, whenever a reference to a cpu node phandle is made its
 value must point to a cpu node compliant with the cpu node bindings as
diff --git a/Documentation/devicetree/bindings/bus/simple-pm-bus.txt b/Documentation/devicetree/bindings/bus/simple-pm-bus.txt
index d032237512c2..6f15037131ed 100644
--- a/Documentation/devicetree/bindings/bus/simple-pm-bus.txt
+++ b/Documentation/devicetree/bindings/bus/simple-pm-bus.txt
@@ -10,7 +10,7 @@ enabled for child devices connected to the bus (either on-SoC or externally)
 to function.
 
 While "simple-pm-bus" follows the "simple-bus" set of properties, as specified
-in ePAPR, it is not an extension of "simple-bus".
+in the Devicetree Specification, it is not an extension of "simple-bus".
 
 
 Required properties:
diff --git a/Documentation/devicetree/bindings/chosen.txt b/Documentation/devicetree/bindings/chosen.txt
index b5e39af4ddc0..dee3f5d9df26 100644
--- a/Documentation/devicetree/bindings/chosen.txt
+++ b/Documentation/devicetree/bindings/chosen.txt
@@ -10,7 +10,8 @@ stdout-path property
 --------------------
 
 Device trees may specify the device to be used for boot console output
-with a stdout-path property under /chosen, as described in ePAPR, e.g.
+with a stdout-path property under /chosen, as described in the Devicetree
+Specification, e.g.
 
 / {
 	chosen {
diff --git a/Documentation/devicetree/bindings/common-properties.txt b/Documentation/devicetree/bindings/common-properties.txt
index 3193979b1d05..697714f8d75c 100644
--- a/Documentation/devicetree/bindings/common-properties.txt
+++ b/Documentation/devicetree/bindings/common-properties.txt
@@ -1,6 +1,6 @@
 Common properties
 
-The ePAPR specification does not define any properties related to hardware
+The Devicetree Specification does not define any properties related to hardware
 byteswapping, but endianness issues show up frequently in porting Linux to
 different machine types.  This document attempts to provide a consistent
 way of handling byteswapping across drivers.
diff --git a/Documentation/devicetree/bindings/crypto/fsl-sec4.txt b/Documentation/devicetree/bindings/crypto/fsl-sec4.txt
index 10a425f451fc..7aef0eae58d4 100644
--- a/Documentation/devicetree/bindings/crypto/fsl-sec4.txt
+++ b/Documentation/devicetree/bindings/crypto/fsl-sec4.txt
@@ -118,8 +118,8 @@ PROPERTIES
       Definition: A list of clock name strings in the same order as the
           clocks property.
 
-   Note: All other standard properties (see the ePAPR) are allowed
-   but are optional.
+   Note: All other standard properties (see the Devicetree Specification)
+   are allowed but are optional.
 
 
 EXAMPLE
diff --git a/Documentation/devicetree/bindings/crypto/fsl-sec6.txt b/Documentation/devicetree/bindings/crypto/fsl-sec6.txt
index baf8a3c1b469..73b0eb950bb3 100644
--- a/Documentation/devicetree/bindings/crypto/fsl-sec6.txt
+++ b/Documentation/devicetree/bindings/crypto/fsl-sec6.txt
@@ -55,8 +55,8 @@ PROPERTIES
            triplet that includes the child address, parent address, &
            length.
 
-   Note: All other standard properties (see the ePAPR) are allowed
-   but are optional.
+   Note: All other standard properties (see the Devicetree Specification)
+   are allowed but are optional.
 
 EXAMPLE
 	crypto@a0000 {
diff --git a/Documentation/devicetree/bindings/display/panel/display-timing.txt b/Documentation/devicetree/bindings/display/panel/display-timing.txt
index 81a75893d1b8..58fa3e48481d 100644
--- a/Documentation/devicetree/bindings/display/panel/display-timing.txt
+++ b/Documentation/devicetree/bindings/display/panel/display-timing.txt
@@ -57,11 +57,11 @@ can be specified.
 The parameters are defined as:
 
   +----------+-------------------------------------+----------+-------+
-  |          |        ↑                            |          |       |
+  |          |        ^                            |          |       |
   |          |        |vback_porch                 |          |       |
-  |          |        ↓                            |          |       |
+  |          |        v                            |          |       |
   +----------#######################################----------+-------+
-  |          #        ↑                            #          |       |
+  |          #        ^                            #          |       |
   |          #        |                            #          |       |
   |  hback   #        |                            #  hfront  | hsync |
   |   porch  #        |       hactive              #  porch   |  len  |
@@ -69,15 +69,15 @@ The parameters are defined as:
   |          #        |                            #          |       |
   |          #        |vactive                     #          |       |
   |          #        |                            #          |       |
-  |          #        ↓                            #          |       |
+  |          #        v                            #          |       |
   +----------#######################################----------+-------+
-  |          |        ↑                            |          |       |
+  |          |        ^                            |          |       |
   |          |        |vfront_porch                |          |       |
-  |          |        ↓                            |          |       |
+  |          |        v                            |          |       |
   +----------+-------------------------------------+----------+-------+
-  |          |        ↑                            |          |       |
+  |          |        ^                            |          |       |
   |          |        |vsync_len                   |          |       |
-  |          |        ↓                            |          |       |
+  |          |        v                            |          |       |
   +----------+-------------------------------------+----------+-------+
 
 Example:
diff --git a/Documentation/devicetree/bindings/graph.txt b/Documentation/devicetree/bindings/graph.txt
index fcb1c6a4787b..0415e2c53ba0 100644
--- a/Documentation/devicetree/bindings/graph.txt
+++ b/Documentation/devicetree/bindings/graph.txt
@@ -34,7 +34,7 @@ remote device, an 'endpoint' child node must be provided for each link.
 If more than one port is present in a device node or there is more than one
 endpoint at a port, or a port node needs to be associated with a selected
 hardware interface, a common scheme using '#address-cells', '#size-cells'
-and 'reg' properties is used number the nodes.
+and 'reg' properties is used to number the nodes.
 
 device {
         ...
@@ -89,9 +89,9 @@ Links between endpoints
 
 Each endpoint should contain a 'remote-endpoint' phandle property that points
 to the corresponding endpoint in the port of the remote device. In turn, the
-remote endpoint should contain a 'remote-endpoint' property. If it has one,
-it must not point to another than the local endpoint. Two endpoints with their
-'remote-endpoint' phandles pointing at each other form a link between the
+remote endpoint should contain a 'remote-endpoint' property. If it has one, it
+must not point to anything other than the local endpoint. Two endpoints with
+their 'remote-endpoint' phandles pointing at each other form a link between the
 containing ports.
 
 device-1 {
@@ -110,13 +110,12 @@ device-2 {
         };
 };
 
-
 Required properties
 -------------------
 
 If there is more than one 'port' or more than one 'endpoint' node or 'reg'
-property is present in port and/or endpoint nodes the following properties
-are required in a relevant parent node:
+property present in the port and/or endpoint nodes then the following
+properties are required in a relevant parent node:
 
  - #address-cells : number of cells required to define port/endpoint
                     identifier, should be 1.
diff --git a/Documentation/devicetree/bindings/iio/proximity/as3935.txt b/Documentation/devicetree/bindings/iio/proximity/as3935.txt
index ae23dd8da736..38d74314b7ab 100644
--- a/Documentation/devicetree/bindings/iio/proximity/as3935.txt
+++ b/Documentation/devicetree/bindings/iio/proximity/as3935.txt
@@ -3,6 +3,7 @@ Austrian Microsystems AS3935 Franklin lightning sensor device driver
 Required properties:
 	- compatible: must be "ams,as3935"
 	- reg: SPI chip select number for the device
+	- spi-max-frequency: specifies maximum SPI clock frequency
 	- spi-cpha: SPI Mode 1. Refer to spi/spi-bus.txt for generic SPI
 	slave node bindings.
 	- interrupt-parent : should be the phandle for the interrupt controller
@@ -21,6 +22,7 @@ Example:
 as3935@0 {
 	compatible = "ams,as3935";
 	reg = <0>;
+	spi-max-frequency = <400000>;
 	spi-cpha;
 	interrupt-parent = <&gpio1>;
 	interrupts = <16 1>;
diff --git a/Documentation/devicetree/bindings/interrupt-controller/open-pic.txt b/Documentation/devicetree/bindings/interrupt-controller/open-pic.txt
index 909a902dff85..ccbbfdc53c72 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/open-pic.txt
+++ b/Documentation/devicetree/bindings/interrupt-controller/open-pic.txt
@@ -92,7 +92,6 @@ Example 2:
 
 * References
 
-[1] Power.org (TM) Standard for Embedded Power Architecture (TM) Platform
-    Requirements (ePAPR), Version 1.0, July 2008.
-    (http://www.power.org/resources/downloads/Power_ePAPR_APPROVED_v1.0.pdf)
+[1] Devicetree Specification
+    (https://www.devicetree.org/specifications/)
 
diff --git a/Documentation/devicetree/bindings/net/ethernet.txt b/Documentation/devicetree/bindings/net/ethernet.txt
index edd7fd2bbbf9..7da86f22a13b 100644
--- a/Documentation/devicetree/bindings/net/ethernet.txt
+++ b/Documentation/devicetree/bindings/net/ethernet.txt
@@ -8,7 +8,8 @@ The following properties are common to the Ethernet controllers:
   property;
 - max-speed: number, specifies maximum speed in Mbit/s supported by the device;
 - max-frame-size: number, maximum transfer unit (IEEE defined MTU), rather than
-  the maximum frame size (there's contradiction in ePAPR).
+  the maximum frame size (there's contradiction in the Devicetree
+  Specification).
 - phy-mode: string, operation mode of the PHY interface. This is now a de-facto
   standard property; supported values are:
   * "internal"
@@ -35,9 +36,11 @@ The following properties are common to the Ethernet controllers:
   * "rxaui"
   * "xaui"
   * "10gbase-kr" (10GBASE-KR, XFI, SFI)
-- phy-connection-type: the same as "phy-mode" property but described in ePAPR;
+- phy-connection-type: the same as "phy-mode" property but described in the
+  Devicetree Specification;
 - phy-handle: phandle, specifies a reference to a node representing a PHY
-  device; this property is described in ePAPR and so preferred;
+  device; this property is described in the Devicetree Specification and so
+  preferred;
 - phy: the same as "phy-handle" property, not recommended for new bindings.
 - phy-device: the same as "phy-handle" property, not recommended for new
   bindings.
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/fman.txt b/Documentation/devicetree/bindings/net/fsl-fman.txt
index df873d1f3b7c..df873d1f3b7c 100644
--- a/Documentation/devicetree/bindings/powerpc/fsl/fman.txt
+++ b/Documentation/devicetree/bindings/net/fsl-fman.txt
diff --git a/Documentation/devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt b/Documentation/devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt
index 5dbf169cd81c..590f622188de 100644
--- a/Documentation/devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt
+++ b/Documentation/devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt
@@ -31,7 +31,7 @@ mmc3: mmc@01c12000 {
 	non-removable;
 	status = "okay";
 
-	brcmf: bcrmf@1 {
+	brcmf: wifi@1 {
 		reg = <1>;
 		compatible = "brcm,bcm4329-fmac";
 		interrupt-parent = <&pio>;
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/cpus.txt b/Documentation/devicetree/bindings/powerpc/fsl/cpus.txt
index f8cd2397aa04..d63ab1dec16d 100644
--- a/Documentation/devicetree/bindings/powerpc/fsl/cpus.txt
+++ b/Documentation/devicetree/bindings/powerpc/fsl/cpus.txt
@@ -3,10 +3,10 @@ Power Architecture CPU Binding
 Copyright 2013 Freescale Semiconductor Inc.
 
 Power Architecture CPUs in Freescale SOCs are represented in device trees as
-per the definition in ePAPR.
+per the definition in the Devicetree Specification.
 
-In addition to the ePAPR definitions, the properties defined below may be
-present on CPU nodes.
+In addition to the the Devicetree Specification definitions, the properties
+defined below may be present on CPU nodes.
 
 PROPERTIES
 
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/l2cache.txt b/Documentation/devicetree/bindings/powerpc/fsl/l2cache.txt
index dc9bb3182525..8a70696395a7 100644
--- a/Documentation/devicetree/bindings/powerpc/fsl/l2cache.txt
+++ b/Documentation/devicetree/bindings/powerpc/fsl/l2cache.txt
@@ -1,7 +1,7 @@
 Freescale L2 Cache Controller
 
 L2 cache is present in Freescale's QorIQ and QorIQ Qonverge platforms.
-The cache bindings explained below are ePAPR compliant
+The cache bindings explained below are Devicetree Specification compliant
 
 Required Properties:
 
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/srio-rmu.txt b/Documentation/devicetree/bindings/powerpc/fsl/srio-rmu.txt
index b9a8a2bcfae7..0496ada4bba4 100644
--- a/Documentation/devicetree/bindings/powerpc/fsl/srio-rmu.txt
+++ b/Documentation/devicetree/bindings/powerpc/fsl/srio-rmu.txt
@@ -124,8 +124,8 @@ Port-Write Unit:
 		A single IRQ that handles port-write conditions is
 		specified by this property.  (Typically shared with error).
 
-   Note: All other standard properties (see the ePAPR) are allowed
-   but are optional.
+   Note: All other standard properties (see the Devicetree Specification)
+   are allowed but are optional.
 
 Example:
 	rmu: rmu@d3000 {
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/srio.txt b/Documentation/devicetree/bindings/powerpc/fsl/srio.txt
index 07abf0f2f440..86ee6ea73754 100644
--- a/Documentation/devicetree/bindings/powerpc/fsl/srio.txt
+++ b/Documentation/devicetree/bindings/powerpc/fsl/srio.txt
@@ -72,7 +72,8 @@ the following properties:
 		represents the LIODN associated with maintenance transactions
 		for the port.
 
-Note: All other standard properties (see ePAPR) are allowed but are optional.
+Note: All other standard properties (see the Devicetree Specification)
+are allowed but are optional.
 
 Example:
 
diff --git a/Documentation/devicetree/bindings/thermal/brcm,ns-thermal b/Documentation/devicetree/bindings/thermal/brcm,ns-thermal.txt
index 68e047170039..68e047170039 100644
--- a/Documentation/devicetree/bindings/thermal/brcm,ns-thermal
+++ b/Documentation/devicetree/bindings/thermal/brcm,ns-thermal.txt
diff --git a/Documentation/devicetree/bindings/usb/exynos-usb.txt b/Documentation/devicetree/bindings/usb/exynos-usb.txt
index 9b4dbe3b2acc..78ebebb66dad 100644
--- a/Documentation/devicetree/bindings/usb/exynos-usb.txt
+++ b/Documentation/devicetree/bindings/usb/exynos-usb.txt
@@ -92,6 +92,8 @@ Required properties:
 	   parent's address space
  - clocks: Clock IDs array as required by the controller.
  - clock-names: names of clocks correseponding to IDs in the clock property
+ - vdd10-supply: 1.0V powr supply
+ - vdd33-supply: 3.0V/3.3V power supply
 
 Sub-nodes:
 The dwc3 core should be added as subnode to Exynos dwc3 glue.
@@ -107,6 +109,8 @@ Example:
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges;
+		vdd10-supply = <&ldo11_reg>;
+		vdd33-supply = <&ldo9_reg>;
 
 		dwc3 {
 			compatible = "synopsys,dwc3";
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 286f4e1e111f..708ff2504260 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -45,6 +45,7 @@ avia	avia semiconductor
 avic	Shanghai AVIC Optoelectronics Co., Ltd.
 axentia	Axentia Technologies AB
 axis	Axis Communications AB
+bananapi BIPAI KEJI LIMITED
 boe	BOE Technology Group Co., Ltd.
 bosch	Bosch Sensortec GmbH
 boundary	Boundary Devices Inc.
@@ -159,6 +160,8 @@ iom	Iomega Corporation
 isee	ISEE 2007 S.L.
 isil	Intersil
 issi	Integrated Silicon Solutions Inc.
+itead	ITEAD Intelligent Systems Co.Ltd
+iwave  iWave Systems Technologies Pvt. Ltd.
 jdi	Japan Display Inc.
 jedec	JEDEC Solid State Technology Association
 karo	Ka-Ro electronics GmbH
@@ -177,6 +180,7 @@ lg	LG Corporation
 libretech	Shenzhen Libre Technology Co., Ltd
 licheepi	Lichee Pi
 linaro	Linaro Limited
+linksys	Belkin International, Inc. (Linksys)
 linux	Linux-specific binding
 lltc	Linear Technology Corporation
 lsi	LSI Corp. (LSI Logic)
@@ -269,8 +273,10 @@ renesas	Renesas Electronics Corporation
 richtek	Richtek Technology Corporation
 ricoh	Ricoh Co. Ltd.
 rikomagic	Rikomagic Tech Corp. Ltd
+riscv	RISC-V Foundation
 rockchip	Fuzhou Rockchip Electronics Co., Ltd
 rohm	ROHM Semiconductor Co., Ltd
+roofull	Shenzhen Roofull Technology Co, Ltd
 samsung	Samsung Semiconductor
 samtec	Samtec/Softing company
 sandisk	Sandisk Corporation
diff --git a/Documentation/devicetree/booting-without-of.txt b/Documentation/devicetree/booting-without-of.txt
index 280d283304bb..fb740445199f 100644
--- a/Documentation/devicetree/booting-without-of.txt
+++ b/Documentation/devicetree/booting-without-of.txt
@@ -1413,7 +1413,7 @@ Optional property:
 	from DMA operations originating from the bus. It provides a means of
 	defining a mapping or translation between the physical address space of
 	the bus and the physical address space of the parent of the bus.
-	(for more information see ePAPR specification)
+	(for more information see the Devicetree Specification)
 
 * DMA Bus child
 Optional property:
diff --git a/Documentation/devicetree/overlay-notes.txt b/Documentation/devicetree/overlay-notes.txt
index d418a6ce9812..eb7f2685fda1 100644
--- a/Documentation/devicetree/overlay-notes.txt
+++ b/Documentation/devicetree/overlay-notes.txt
@@ -3,8 +3,7 @@ Device Tree Overlay Notes
 
 This document describes the implementation of the in-kernel
 device tree overlay functionality residing in drivers/of/overlay.c and is a
-companion document to Documentation/devicetree/dt-object-internal.txt[1] &
-Documentation/devicetree/dynamic-resolution-notes.txt[2]
+companion document to Documentation/devicetree/dynamic-resolution-notes.txt[1]
 
 How overlays work
 -----------------
@@ -16,8 +15,7 @@ Since the kernel mainly deals with devices, any new device node that result
 in an active device should have it created while if the device node is either
 disabled or removed all together, the affected device should be deregistered.
 
-Lets take an example where we have a foo board with the following base tree
-which is taken from [1].
+Lets take an example where we have a foo board with the following base tree:
 
 ---- foo.dts -----------------------------------------------------------------
 	/* FOO platform */
@@ -36,7 +34,7 @@ which is taken from [1].
 	};
 ---- foo.dts -----------------------------------------------------------------
 
-The overlay bar.dts, when loaded (and resolved as described in [2]) should
+The overlay bar.dts, when loaded (and resolved as described in [1]) should
 
 ---- bar.dts -----------------------------------------------------------------
 /plugin/;	/* allow undefined label references and record them */
diff --git a/Documentation/devicetree/usage-model.txt b/Documentation/devicetree/usage-model.txt
index 2b6b3d3f0388..33a8aaac02a8 100644
--- a/Documentation/devicetree/usage-model.txt
+++ b/Documentation/devicetree/usage-model.txt
@@ -387,7 +387,7 @@ static void __init harmony_init_machine(void)
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 }
 
-"simple-bus" is defined in the ePAPR 1.0 specification as a property
+"simple-bus" is defined in the Devicetree Specification as a property
 meaning a simple memory mapped bus, so the of_platform_populate() code
 could be written to just assume simple-bus compatible nodes will
 always be traversed.  However, we pass it in as an argument so that
diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt
index 5962949944fd..619cdffa5d44 100644
--- a/Documentation/printk-formats.txt
+++ b/Documentation/printk-formats.txt
@@ -275,6 +275,42 @@ struct va_format:
 
 	Passed by reference.
 
+kobjects:
+	%pO
+
+	Base specifier for kobject based structs. Must be followed with
+	character for specific type of kobject as listed below:
+
+	Device tree nodes:
+
+	%pOF[fnpPcCF]
+
+	For printing device tree nodes. The optional arguments are:
+	    f device node full_name
+	    n device node name
+	    p device node phandle
+	    P device node path spec (name + @unit)
+	    F device node flags
+	    c major compatible string
+	    C full compatible string
+	Without any arguments prints full_name (same as %pOFf)
+	The separator when using multiple arguments is ':'
+
+	Examples:
+
+	%pOF	/foo/bar@0			- Node full name
+	%pOFf	/foo/bar@0			- Same as above
+	%pOFfp	/foo/bar@0:10			- Node full name + phandle
+	%pOFfcF	/foo/bar@0:foo,device:--P-	- Node full name +
+	                                          major compatible string +
+						  node flags
+							D - dynamic
+							d - detached
+							P - Populated
+							B - Populated bus
+
+	Passed by reference.
+
 struct clk:
 
 	%pC	pll1
diff --git a/Documentation/xtensa/mmu.txt b/Documentation/xtensa/mmu.txt
index 222a2c6748e6..5de8715d5bec 100644
--- a/Documentation/xtensa/mmu.txt
+++ b/Documentation/xtensa/mmu.txt
@@ -41,9 +41,9 @@ The scheme below assumes that the kernel is loaded below 0x40000000.
  00..1F -> 00  -> 00  -> 00
 
 The default location of IO peripherals is above 0xf0000000. This may be changed
-using a "ranges" property in a device tree simple-bus node. See ePAPR 1.1, §6.5
-for details on the syntax and semantic of simple-bus nodes. The following
-limitations apply:
+using a "ranges" property in a device tree simple-bus node. See the Devicetree
+Specification, section 4.5 for details on the syntax and semantics of
+simple-bus nodes. The following limitations apply:
 
 1. Only top level simple-bus nodes are considered
 
diff --git a/MAINTAINERS b/MAINTAINERS
index 1db3152993ba..8c89ce7435d9 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9664,6 +9664,7 @@ S:	Maintained
 F:	drivers/of/
 F:	include/linux/of*.h
 F:	scripts/dtc/
+F:	Documentation/ABI/testing/sysfs-firmware-ofw
 
 OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS
 M:	Rob Herring <robh+dt@kernel.org>
diff --git a/drivers/of/Makefile b/drivers/of/Makefile
index d7efd9d458aa..97dc01c81438 100644
--- a/drivers/of/Makefile
+++ b/drivers/of/Makefile
@@ -1,4 +1,4 @@
-obj-y = base.o device.o platform.o
+obj-y = base.o device.o platform.o property.o
 obj-$(CONFIG_OF_DYNAMIC) += dynamic.o
 obj-$(CONFIG_OF_FLATTREE) += fdt.o
 obj-$(CONFIG_OF_EARLY_FLATTREE) += fdt_address.o
diff --git a/drivers/of/address.c b/drivers/of/address.c
index 72914cdfce2a..580bbf6ca2b1 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -710,7 +710,7 @@ static int __of_address_to_resource(struct device_node *dev,
  *
  * Note that if your address is a PIO address, the conversion will fail if
  * the physical address can't be internally converted to an IO token with
- * pci_address_to_pio(), that is because it's either called to early or it
+ * pci_address_to_pio(), that is because it's either called too early or it
  * can't be matched to any host bridge IO space
  */
 int of_address_to_resource(struct device_node *dev, int index,
diff --git a/drivers/of/base.c b/drivers/of/base.c
index cb1c49ae3b88..686628d1dfa6 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -155,7 +155,7 @@ int __of_add_property_sysfs(struct device_node *np, struct property *pp)
 
 	sysfs_bin_attr_init(&pp->attr);
 	pp->attr.attr.name = safe_name(&np->kobj, pp->name);
-	pp->attr.attr.mode = secure ? S_IRUSR : S_IRUGO;
+	pp->attr.attr.mode = secure ? 0400 : 0444;
 	pp->attr.size = secure ? 0 : pp->length;
 	pp->attr.read = of_node_property_read;
 
@@ -773,16 +773,31 @@ static struct device_node *__of_find_node_by_path(struct device_node *parent,
 		return NULL;
 
 	__for_each_child_of_node(parent, child) {
-		const char *name = strrchr(child->full_name, '/');
-		if (WARN(!name, "malformed device_node %s\n", child->full_name))
-			continue;
-		name++;
+		const char *name = kbasename(child->full_name);
 		if (strncmp(path, name, len) == 0 && (strlen(name) == len))
 			return child;
 	}
 	return NULL;
 }
 
+struct device_node *__of_find_node_by_full_path(struct device_node *node,
+						const char *path)
+{
+	const char *separator = strchr(path, ':');
+
+	while (node && *path == '/') {
+		struct device_node *tmp = node;
+
+		path++; /* Increment past '/' delimiter */
+		node = __of_find_node_by_path(node, path);
+		of_node_put(tmp);
+		path = strchrnul(path, '/');
+		if (separator && separator < path)
+			break;
+	}
+	return node;
+}
+
 /**
  *	of_find_node_opts_by_path - Find a node matching a full OF path
  *	@path: Either the full path to match, or if the path does not
@@ -842,16 +857,7 @@ struct device_node *of_find_node_opts_by_path(const char *path, const char **opt
 	raw_spin_lock_irqsave(&devtree_lock, flags);
 	if (!np)
 		np = of_node_get(of_root);
-	while (np && *path == '/') {
-		struct device_node *tmp = np;
-
-		path++; /* Increment past '/' delimiter */
-		np = __of_find_node_by_path(np, path);
-		of_node_put(tmp);
-		path = strchrnul(path, '/');
-		if (separator && separator < path)
-			break;
-	}
+	np = __of_find_node_by_full_path(np, path);
 	raw_spin_unlock_irqrestore(&devtree_lock, flags);
 	return np;
 }
@@ -1113,458 +1119,6 @@ struct device_node *of_find_node_by_phandle(phandle handle)
 }
 EXPORT_SYMBOL(of_find_node_by_phandle);
 
-/**
- * of_property_count_elems_of_size - Count the number of elements in a property
- *
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @elem_size:	size of the individual element
- *
- * Search for a property in a device node and count the number of elements of
- * size elem_size in it. Returns number of elements on sucess, -EINVAL if the
- * property does not exist or its length does not match a multiple of elem_size
- * and -ENODATA if the property does not have a value.
- */
-int of_property_count_elems_of_size(const struct device_node *np,
-				const char *propname, int elem_size)
-{
-	struct property *prop = of_find_property(np, propname, NULL);
-
-	if (!prop)
-		return -EINVAL;
-	if (!prop->value)
-		return -ENODATA;
-
-	if (prop->length % elem_size != 0) {
-		pr_err("size of %s in node %s is not a multiple of %d\n",
-		       propname, np->full_name, elem_size);
-		return -EINVAL;
-	}
-
-	return prop->length / elem_size;
-}
-EXPORT_SYMBOL_GPL(of_property_count_elems_of_size);
-
-/**
- * of_find_property_value_of_size
- *
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @min:	minimum allowed length of property value
- * @max:	maximum allowed length of property value (0 means unlimited)
- * @len:	if !=NULL, actual length is written to here
- *
- * Search for a property in a device node and valid the requested size.
- * Returns the property value on success, -EINVAL if the property does not
- *  exist, -ENODATA if property does not have a value, and -EOVERFLOW if the
- * property data is too small or too large.
- *
- */
-static void *of_find_property_value_of_size(const struct device_node *np,
-			const char *propname, u32 min, u32 max, size_t *len)
-{
-	struct property *prop = of_find_property(np, propname, NULL);
-
-	if (!prop)
-		return ERR_PTR(-EINVAL);
-	if (!prop->value)
-		return ERR_PTR(-ENODATA);
-	if (prop->length < min)
-		return ERR_PTR(-EOVERFLOW);
-	if (max && prop->length > max)
-		return ERR_PTR(-EOVERFLOW);
-
-	if (len)
-		*len = prop->length;
-
-	return prop->value;
-}
-
-/**
- * of_property_read_u32_index - Find and read a u32 from a multi-value property.
- *
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @index:	index of the u32 in the list of values
- * @out_value:	pointer to return value, modified only if no error.
- *
- * Search for a property in a device node and read nth 32-bit value 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.
- *
- * The out_value is modified only if a valid u32 value can be decoded.
- */
-int of_property_read_u32_index(const struct device_node *np,
-				       const char *propname,
-				       u32 index, u32 *out_value)
-{
-	const u32 *val = of_find_property_value_of_size(np, propname,
-					((index + 1) * sizeof(*out_value)),
-					0,
-					NULL);
-
-	if (IS_ERR(val))
-		return PTR_ERR(val);
-
-	*out_value = be32_to_cpup(((__be32 *)val) + index);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(of_property_read_u32_index);
-
-/**
- * of_property_read_u64_index - Find and read a u64 from a multi-value property.
- *
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @index:	index of the u64 in the list of values
- * @out_value:	pointer to return value, modified only if no error.
- *
- * Search for a property in a device node and read nth 64-bit value 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.
- *
- * The out_value is modified only if a valid u64 value can be decoded.
- */
-int of_property_read_u64_index(const struct device_node *np,
-				       const char *propname,
-				       u32 index, u64 *out_value)
-{
-	const u64 *val = of_find_property_value_of_size(np, propname,
-					((index + 1) * sizeof(*out_value)),
-					0, NULL);
-
-	if (IS_ERR(val))
-		return PTR_ERR(val);
-
-	*out_value = be64_to_cpup(((__be64 *)val) + index);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(of_property_read_u64_index);
-
-/**
- * of_property_read_variable_u8_array - Find and read an array of u8 from a
- * property, with bounds on the minimum and maximum array size.
- *
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @out_values:	pointer to return value, modified only if return value is 0.
- * @sz_min:	minimum number of array elements to read
- * @sz_max:	maximum number of array elements to read, if zero there is no
- *		upper limit on the number of elements in the dts entry but only
- *		sz_min will be read.
- *
- * Search for a property in a device node and read 8-bit value(s) from
- * it. Returns number of elements read on success, -EINVAL if the property
- * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
- * if the property data is smaller than sz_min or longer than sz_max.
- *
- * dts entry of array should be like:
- *	property = /bits/ 8 <0x50 0x60 0x70>;
- *
- * The out_values is modified only if a valid u8 value can be decoded.
- */
-int of_property_read_variable_u8_array(const struct device_node *np,
-					const char *propname, u8 *out_values,
-					size_t sz_min, size_t sz_max)
-{
-	size_t sz, count;
-	const u8 *val = of_find_property_value_of_size(np, propname,
-						(sz_min * sizeof(*out_values)),
-						(sz_max * sizeof(*out_values)),
-						&sz);
-
-	if (IS_ERR(val))
-		return PTR_ERR(val);
-
-	if (!sz_max)
-		sz = sz_min;
-	else
-		sz /= sizeof(*out_values);
-
-	count = sz;
-	while (count--)
-		*out_values++ = *val++;
-
-	return sz;
-}
-EXPORT_SYMBOL_GPL(of_property_read_variable_u8_array);
-
-/**
- * of_property_read_variable_u16_array - Find and read an array of u16 from a
- * property, with bounds on the minimum and maximum array size.
- *
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @out_values:	pointer to return value, modified only if return value is 0.
- * @sz_min:	minimum number of array elements to read
- * @sz_max:	maximum number of array elements to read, if zero there is no
- *		upper limit on the number of elements in the dts entry but only
- *		sz_min will be read.
- *
- * Search for a property in a device node and read 16-bit value(s) from
- * it. Returns number of elements read on success, -EINVAL if the property
- * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
- * if the property data is smaller than sz_min or longer than sz_max.
- *
- * dts entry of array should be like:
- *	property = /bits/ 16 <0x5000 0x6000 0x7000>;
- *
- * The out_values is modified only if a valid u16 value can be decoded.
- */
-int of_property_read_variable_u16_array(const struct device_node *np,
-					const char *propname, u16 *out_values,
-					size_t sz_min, size_t sz_max)
-{
-	size_t sz, count;
-	const __be16 *val = of_find_property_value_of_size(np, propname,
-						(sz_min * sizeof(*out_values)),
-						(sz_max * sizeof(*out_values)),
-						&sz);
-
-	if (IS_ERR(val))
-		return PTR_ERR(val);
-
-	if (!sz_max)
-		sz = sz_min;
-	else
-		sz /= sizeof(*out_values);
-
-	count = sz;
-	while (count--)
-		*out_values++ = be16_to_cpup(val++);
-
-	return sz;
-}
-EXPORT_SYMBOL_GPL(of_property_read_variable_u16_array);
-
-/**
- * of_property_read_variable_u32_array - Find and read an array of 32 bit
- * integers from a property, with bounds on the minimum and maximum array size.
- *
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @out_values:	pointer to return value, modified only if return value is 0.
- * @sz_min:	minimum number of array elements to read
- * @sz_max:	maximum number of array elements to read, if zero there is no
- *		upper limit on the number of elements in the dts entry but only
- *		sz_min will be read.
- *
- * Search for a property in a device node and read 32-bit value(s) from
- * it. Returns number of elements read on success, -EINVAL if the property
- * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
- * if the property data is smaller than sz_min or longer than sz_max.
- *
- * The out_values is modified only if a valid u32 value can be decoded.
- */
-int of_property_read_variable_u32_array(const struct device_node *np,
-			       const char *propname, u32 *out_values,
-			       size_t sz_min, size_t sz_max)
-{
-	size_t sz, count;
-	const __be32 *val = of_find_property_value_of_size(np, propname,
-						(sz_min * sizeof(*out_values)),
-						(sz_max * sizeof(*out_values)),
-						&sz);
-
-	if (IS_ERR(val))
-		return PTR_ERR(val);
-
-	if (!sz_max)
-		sz = sz_min;
-	else
-		sz /= sizeof(*out_values);
-
-	count = sz;
-	while (count--)
-		*out_values++ = be32_to_cpup(val++);
-
-	return sz;
-}
-EXPORT_SYMBOL_GPL(of_property_read_variable_u32_array);
-
-/**
- * of_property_read_u64 - Find and read a 64 bit integer 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.
- *
- * Search for a property in a device node and read a 64-bit value 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.
- *
- * The out_value is modified only if a valid u64 value can be decoded.
- */
-int of_property_read_u64(const struct device_node *np, const char *propname,
-			 u64 *out_value)
-{
-	const __be32 *val = of_find_property_value_of_size(np, propname,
-						sizeof(*out_value),
-						0,
-						NULL);
-
-	if (IS_ERR(val))
-		return PTR_ERR(val);
-
-	*out_value = of_read_number(val, 2);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(of_property_read_u64);
-
-/**
- * of_property_read_variable_u64_array - Find and read an array of 64 bit
- * integers from a property, with bounds on the minimum and maximum array size.
- *
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @out_values:	pointer to return value, modified only if return value is 0.
- * @sz_min:	minimum number of array elements to read
- * @sz_max:	maximum number of array elements to read, if zero there is no
- *		upper limit on the number of elements in the dts entry but only
- *		sz_min will be read.
- *
- * Search for a property in a device node and read 64-bit value(s) from
- * it. Returns number of elements read on success, -EINVAL if the property
- * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
- * if the property data is smaller than sz_min or longer than sz_max.
- *
- * The out_values is modified only if a valid u64 value can be decoded.
- */
-int of_property_read_variable_u64_array(const struct device_node *np,
-			       const char *propname, u64 *out_values,
-			       size_t sz_min, size_t sz_max)
-{
-	size_t sz, count;
-	const __be32 *val = of_find_property_value_of_size(np, propname,
-						(sz_min * sizeof(*out_values)),
-						(sz_max * sizeof(*out_values)),
-						&sz);
-
-	if (IS_ERR(val))
-		return PTR_ERR(val);
-
-	if (!sz_max)
-		sz = sz_min;
-	else
-		sz /= sizeof(*out_values);
-
-	count = sz;
-	while (count--) {
-		*out_values++ = of_read_number(val, 2);
-		val += 2;
-	}
-
-	return sz;
-}
-EXPORT_SYMBOL_GPL(of_property_read_variable_u64_array);
-
-/**
- * of_property_read_string - Find and read a string from a property
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @out_string:	pointer to null terminated return string, modified only if
- *		return value is 0.
- *
- * Search for a property in a device tree node and retrieve a null
- * terminated string value (pointer to data, not a copy). Returns 0 on
- * success, -EINVAL if the property does not exist, -ENODATA if property
- * does not have a value, and -EILSEQ if the string is not null-terminated
- * within the length of the property data.
- *
- * The out_string pointer is modified only if a valid string can be decoded.
- */
-int of_property_read_string(const struct device_node *np, const char *propname,
-				const char **out_string)
-{
-	const struct property *prop = of_find_property(np, propname, NULL);
-	if (!prop)
-		return -EINVAL;
-	if (!prop->value)
-		return -ENODATA;
-	if (strnlen(prop->value, prop->length) >= prop->length)
-		return -EILSEQ;
-	*out_string = prop->value;
-	return 0;
-}
-EXPORT_SYMBOL_GPL(of_property_read_string);
-
-/**
- * of_property_match_string() - Find string in a list and return index
- * @np: pointer to node containing string list property
- * @propname: string list property name
- * @string: pointer to string to search for in string list
- *
- * This function searches a string list property and returns the index
- * of a specific string value.
- */
-int of_property_match_string(const struct device_node *np, const char *propname,
-			     const char *string)
-{
-	const struct property *prop = of_find_property(np, propname, NULL);
-	size_t l;
-	int i;
-	const char *p, *end;
-
-	if (!prop)
-		return -EINVAL;
-	if (!prop->value)
-		return -ENODATA;
-
-	p = prop->value;
-	end = p + prop->length;
-
-	for (i = 0; p < end; i++, p += l) {
-		l = strnlen(p, end - p) + 1;
-		if (p + l > end)
-			return -EILSEQ;
-		pr_debug("comparing %s with %s\n", string, p);
-		if (strcmp(string, p) == 0)
-			return i; /* Found it; return index */
-	}
-	return -ENODATA;
-}
-EXPORT_SYMBOL_GPL(of_property_match_string);
-
-/**
- * of_property_read_string_helper() - Utility helper for parsing string properties
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @out_strs:	output array of string pointers.
- * @sz:		number of array elements to read.
- * @skip:	Number of strings to skip over at beginning of list.
- *
- * Don't call this function directly. It is a utility helper for the
- * of_property_read_string*() family of functions.
- */
-int of_property_read_string_helper(const struct device_node *np,
-				   const char *propname, const char **out_strs,
-				   size_t sz, int skip)
-{
-	const struct property *prop = of_find_property(np, propname, NULL);
-	int l = 0, i = 0;
-	const char *p, *end;
-
-	if (!prop)
-		return -EINVAL;
-	if (!prop->value)
-		return -ENODATA;
-	p = prop->value;
-	end = p + prop->length;
-
-	for (i = 0; p < end && (!out_strs || i < skip + sz); i++, p += l) {
-		l = strnlen(p, end - p) + 1;
-		if (p + l > end)
-			return -EILSEQ;
-		if (out_strs && i >= skip)
-			*out_strs++ = p;
-	}
-	i -= skip;
-	return i <= 0 ? -ENODATA : i;
-}
-EXPORT_SYMBOL_GPL(of_property_read_string_helper);
-
 void of_print_phandle_args(const char *msg, const struct of_phandle_args *args)
 {
 	int i;
@@ -2213,47 +1767,6 @@ int of_alias_get_highest_id(const char *stem)
 }
 EXPORT_SYMBOL_GPL(of_alias_get_highest_id);
 
-const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur,
-			       u32 *pu)
-{
-	const void *curv = cur;
-
-	if (!prop)
-		return NULL;
-
-	if (!cur) {
-		curv = prop->value;
-		goto out_val;
-	}
-
-	curv += sizeof(*cur);
-	if (curv >= prop->value + prop->length)
-		return NULL;
-
-out_val:
-	*pu = be32_to_cpup(curv);
-	return curv;
-}
-EXPORT_SYMBOL_GPL(of_prop_next_u32);
-
-const char *of_prop_next_string(struct property *prop, const char *cur)
-{
-	const void *curv = cur;
-
-	if (!prop)
-		return NULL;
-
-	if (!cur)
-		return prop->value;
-
-	curv += strlen(cur) + 1;
-	if (curv >= prop->value + prop->length)
-		return NULL;
-
-	return curv;
-}
-EXPORT_SYMBOL_GPL(of_prop_next_string);
-
 /**
  * of_console_check() - Test and setup console for DT setup
  * @dn - Pointer to device node
@@ -2327,283 +1840,3 @@ int of_find_last_cache_level(unsigned int cpu)
 
 	return cache_level;
 }
-
-/**
- * of_graph_parse_endpoint() - parse common endpoint node properties
- * @node: pointer to endpoint device_node
- * @endpoint: pointer to the OF endpoint data structure
- *
- * The caller should hold a reference to @node.
- */
-int of_graph_parse_endpoint(const struct device_node *node,
-			    struct of_endpoint *endpoint)
-{
-	struct device_node *port_node = of_get_parent(node);
-
-	WARN_ONCE(!port_node, "%s(): endpoint %s has no parent node\n",
-		  __func__, node->full_name);
-
-	memset(endpoint, 0, sizeof(*endpoint));
-
-	endpoint->local_node = node;
-	/*
-	 * It doesn't matter whether the two calls below succeed.
-	 * If they don't then the default value 0 is used.
-	 */
-	of_property_read_u32(port_node, "reg", &endpoint->port);
-	of_property_read_u32(node, "reg", &endpoint->id);
-
-	of_node_put(port_node);
-
-	return 0;
-}
-EXPORT_SYMBOL(of_graph_parse_endpoint);
-
-/**
- * of_graph_get_port_by_id() - get the port matching a given id
- * @parent: pointer to the parent device node
- * @id: id of the port
- *
- * Return: A 'port' node pointer with refcount incremented. The caller
- * has to use of_node_put() on it when done.
- */
-struct device_node *of_graph_get_port_by_id(struct device_node *parent, u32 id)
-{
-	struct device_node *node, *port;
-
-	node = of_get_child_by_name(parent, "ports");
-	if (node)
-		parent = node;
-
-	for_each_child_of_node(parent, port) {
-		u32 port_id = 0;
-
-		if (of_node_cmp(port->name, "port") != 0)
-			continue;
-		of_property_read_u32(port, "reg", &port_id);
-		if (id == port_id)
-			break;
-	}
-
-	of_node_put(node);
-
-	return port;
-}
-EXPORT_SYMBOL(of_graph_get_port_by_id);
-
-/**
- * of_graph_get_next_endpoint() - get next endpoint node
- * @parent: pointer to the parent device node
- * @prev: previous endpoint node, or NULL to get first
- *
- * Return: An 'endpoint' node pointer with refcount incremented. Refcount
- * of the passed @prev node is decremented.
- */
-struct device_node *of_graph_get_next_endpoint(const struct device_node *parent,
-					struct device_node *prev)
-{
-	struct device_node *endpoint;
-	struct device_node *port;
-
-	if (!parent)
-		return NULL;
-
-	/*
-	 * Start by locating the port node. If no previous endpoint is specified
-	 * search for the first port node, otherwise get the previous endpoint
-	 * parent port node.
-	 */
-	if (!prev) {
-		struct device_node *node;
-
-		node = of_get_child_by_name(parent, "ports");
-		if (node)
-			parent = node;
-
-		port = of_get_child_by_name(parent, "port");
-		of_node_put(node);
-
-		if (!port) {
-			pr_err("graph: no port node found in %s\n",
-			       parent->full_name);
-			return NULL;
-		}
-	} else {
-		port = of_get_parent(prev);
-		if (WARN_ONCE(!port, "%s(): endpoint %s has no parent node\n",
-			      __func__, prev->full_name))
-			return NULL;
-	}
-
-	while (1) {
-		/*
-		 * Now that we have a port node, get the next endpoint by
-		 * getting the next child. If the previous endpoint is NULL this
-		 * will return the first child.
-		 */
-		endpoint = of_get_next_child(port, prev);
-		if (endpoint) {
-			of_node_put(port);
-			return endpoint;
-		}
-
-		/* No more endpoints under this port, try the next one. */
-		prev = NULL;
-
-		do {
-			port = of_get_next_child(parent, port);
-			if (!port)
-				return NULL;
-		} while (of_node_cmp(port->name, "port"));
-	}
-}
-EXPORT_SYMBOL(of_graph_get_next_endpoint);
-
-/**
- * of_graph_get_endpoint_by_regs() - get endpoint node of specific identifiers
- * @parent: pointer to the parent device node
- * @port_reg: identifier (value of reg property) of the parent port node
- * @reg: identifier (value of reg property) of the endpoint node
- *
- * Return: An 'endpoint' node pointer which is identified by reg and at the same
- * is the child of a port node identified by port_reg. reg and port_reg are
- * ignored when they are -1.
- */
-struct device_node *of_graph_get_endpoint_by_regs(
-	const struct device_node *parent, int port_reg, int reg)
-{
-	struct of_endpoint endpoint;
-	struct device_node *node = NULL;
-
-	for_each_endpoint_of_node(parent, node) {
-		of_graph_parse_endpoint(node, &endpoint);
-		if (((port_reg == -1) || (endpoint.port == port_reg)) &&
-			((reg == -1) || (endpoint.id == reg)))
-			return node;
-	}
-
-	return NULL;
-}
-EXPORT_SYMBOL(of_graph_get_endpoint_by_regs);
-
-/**
- * of_graph_get_remote_endpoint() - get remote endpoint node
- * @node: pointer to a local endpoint device_node
- *
- * Return: Remote endpoint node associated with remote endpoint node linked
- *	   to @node. Use of_node_put() on it when done.
- */
-struct device_node *of_graph_get_remote_endpoint(const struct device_node *node)
-{
-	/* Get remote endpoint node. */
-	return of_parse_phandle(node, "remote-endpoint", 0);
-}
-EXPORT_SYMBOL(of_graph_get_remote_endpoint);
-
-/**
- * of_graph_get_port_parent() - get port's parent node
- * @node: pointer to a local endpoint device_node
- *
- * Return: device node associated with endpoint node linked
- *	   to @node. Use of_node_put() on it when done.
- */
-struct device_node *of_graph_get_port_parent(struct device_node *node)
-{
-	unsigned int depth;
-
-	/* Walk 3 levels up only if there is 'ports' node. */
-	for (depth = 3; depth && node; depth--) {
-		node = of_get_next_parent(node);
-		if (depth == 2 && of_node_cmp(node->name, "ports"))
-			break;
-	}
-	return node;
-}
-EXPORT_SYMBOL(of_graph_get_port_parent);
-
-/**
- * of_graph_get_remote_port_parent() - get remote port's parent node
- * @node: pointer to a local endpoint device_node
- *
- * Return: Remote device node associated with remote endpoint node linked
- *	   to @node. Use of_node_put() on it when done.
- */
-struct device_node *of_graph_get_remote_port_parent(
-			       const struct device_node *node)
-{
-	struct device_node *np;
-
-	/* Get remote endpoint node. */
-	np = of_graph_get_remote_endpoint(node);
-
-	return of_graph_get_port_parent(np);
-}
-EXPORT_SYMBOL(of_graph_get_remote_port_parent);
-
-/**
- * of_graph_get_remote_port() - get remote port node
- * @node: pointer to a local endpoint device_node
- *
- * Return: Remote port node associated with remote endpoint node linked
- *	   to @node. Use of_node_put() on it when done.
- */
-struct device_node *of_graph_get_remote_port(const struct device_node *node)
-{
-	struct device_node *np;
-
-	/* Get remote endpoint node. */
-	np = of_graph_get_remote_endpoint(node);
-	if (!np)
-		return NULL;
-	return of_get_next_parent(np);
-}
-EXPORT_SYMBOL(of_graph_get_remote_port);
-
-int of_graph_get_endpoint_count(const struct device_node *np)
-{
-	struct device_node *endpoint;
-	int num = 0;
-
-	for_each_endpoint_of_node(np, endpoint)
-		num++;
-
-	return num;
-}
-EXPORT_SYMBOL(of_graph_get_endpoint_count);
-
-/**
- * of_graph_get_remote_node() - get remote parent device_node for given port/endpoint
- * @node: pointer to parent device_node containing graph port/endpoint
- * @port: identifier (value of reg property) of the parent port node
- * @endpoint: identifier (value of reg property) of the endpoint node
- *
- * Return: Remote device node associated with remote endpoint node linked
- *	   to @node. Use of_node_put() on it when done.
- */
-struct device_node *of_graph_get_remote_node(const struct device_node *node,
-					     u32 port, u32 endpoint)
-{
-	struct device_node *endpoint_node, *remote;
-
-	endpoint_node = of_graph_get_endpoint_by_regs(node, port, endpoint);
-	if (!endpoint_node) {
-		pr_debug("no valid endpoint (%d, %d) for node %s\n",
-			 port, endpoint, node->full_name);
-		return NULL;
-	}
-
-	remote = of_graph_get_remote_port_parent(endpoint_node);
-	of_node_put(endpoint_node);
-	if (!remote) {
-		pr_debug("no valid remote node\n");
-		return NULL;
-	}
-
-	if (!of_device_is_available(remote)) {
-		pr_debug("not available for remote node\n");
-		return NULL;
-	}
-
-	return remote;
-}
-EXPORT_SYMBOL(of_graph_get_remote_node);
diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
index 888fdbc09992..0542cf8b6e3d 100644
--- a/drivers/of/dynamic.c
+++ b/drivers/of/dynamic.c
@@ -216,7 +216,7 @@ int of_property_notify(int action, struct device_node *np,
 	return of_reconfig_notify(action, &pr);
 }
 
-void __of_attach_node(struct device_node *np)
+static void __of_attach_node(struct device_node *np)
 {
 	const __be32 *phandle;
 	int sz;
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 43bd69dceabf..ce30c9a588a4 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -91,7 +91,7 @@ void of_fdt_limit_memory(int limit)
  * On match, returns a non-zero value with smaller values returned for more
  * specific compatible values.
  */
-int of_fdt_is_compatible(const void *blob,
+static int of_fdt_is_compatible(const void *blob,
 		      unsigned long node, const char *compat)
 {
 	const char *cp;
@@ -1053,7 +1053,7 @@ u64 __init dt_mem_next_cell(int s, const __be32 **cellp)
 }
 
 /**
- * early_init_dt_scan_memory - Look for an parse memory nodes
+ * early_init_dt_scan_memory - Look for and parse memory nodes
  */
 int __init early_init_dt_scan_memory(unsigned long node, const char *uname,
 				     int depth, void *data)
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index d11437cb1187..6ce72aa65425 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -369,7 +369,10 @@ EXPORT_SYMBOL_GPL(of_irq_parse_one);
  */
 int of_irq_to_resource(struct device_node *dev, int index, struct resource *r)
 {
-	int irq = irq_of_parse_and_map(dev, index);
+	int irq = of_irq_get(dev, index);
+
+	if (irq < 0)
+		return irq;
 
 	/* Only dereference the resource if both the
 	 * resource and the irq are valid. */
diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h
index 4ebb0149d118..3ae12ffbf547 100644
--- a/drivers/of/of_private.h
+++ b/drivers/of/of_private.h
@@ -77,6 +77,9 @@ extern void *__unflatten_device_tree(const void *blob,
 struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags);
 __printf(2, 3) struct device_node *__of_node_dup(const struct device_node *np, const char *fmt, ...);
 
+struct device_node *__of_find_node_by_full_path(struct device_node *node,
+						const char *path);
+
 extern const void *__of_get_property(const struct device_node *np,
 				     const char *name, int *lenp);
 extern int __of_add_property(struct device_node *np, struct property *prop);
@@ -90,7 +93,6 @@ extern int __of_update_property(struct device_node *np,
 extern void __of_update_property_sysfs(struct device_node *np,
 		struct property *newprop, struct property *oldprop);
 
-extern void __of_attach_node(struct device_node *np);
 extern int __of_attach_node_sysfs(struct device_node *np);
 extern void __of_detach_node(struct device_node *np);
 extern void __of_detach_node_sysfs(struct device_node *np);
diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index 7827786718d8..c0e4ee1cd1ba 100644
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -132,6 +132,10 @@ static int of_overlay_apply_single_device_node(struct of_overlay *ov,
 	/* NOTE: Multiple mods of created nodes not supported */
 	tchild = of_get_child_by_name(target, cname);
 	if (tchild != NULL) {
+		/* new overlay phandle value conflicts with existing value */
+		if (child->phandle)
+			return -EINVAL;
+
 		/* apply overlay recursively */
 		ret = of_overlay_apply_one(ov, tchild, child);
 		of_node_put(tchild);
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 703a42118ffc..b19524623498 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -99,7 +99,7 @@ static void of_device_make_bus_id(struct device *dev)
 
 		/* format arguments only used if dev_name() resolves to NULL */
 		dev_set_name(dev, dev_name(dev) ? "%s:%s" : "%s",
-			     strrchr(node->full_name, '/') + 1, dev_name(dev));
+			     kbasename(node->full_name), dev_name(dev));
 		node = node->parent;
 	}
 }
diff --git a/drivers/of/property.c b/drivers/of/property.c
new file mode 100644
index 000000000000..07c7c36c5ca8
--- /dev/null
+++ b/drivers/of/property.c
@@ -0,0 +1,806 @@
+/*
+ * drivers/of/property.c - Procedures for accessing and interpreting
+ *			   Devicetree properties and graphs.
+ *
+ * Initially created by copying procedures from drivers/of/base.c. This
+ * file contains the OF property as well as the OF graph interface
+ * functions.
+ *
+ * Paul Mackerras	August 1996.
+ * Copyright (C) 1996-2005 Paul Mackerras.
+ *
+ *  Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
+ *    {engebret|bergner}@us.ibm.com
+ *
+ *  Adapted for sparc and sparc64 by David S. Miller davem@davemloft.net
+ *
+ *  Reconsolidated from arch/x/kernel/prom.c by Stephen Rothwell and
+ *  Grant Likely.
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ */
+
+#define pr_fmt(fmt)	"OF: " fmt
+
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_graph.h>
+#include <linux/string.h>
+
+#include "of_private.h"
+
+/**
+ * of_property_count_elems_of_size - Count the number of elements in a property
+ *
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @elem_size:	size of the individual element
+ *
+ * Search for a property in a device node and count the number of elements of
+ * size elem_size in it. Returns number of elements on sucess, -EINVAL if the
+ * property does not exist or its length does not match a multiple of elem_size
+ * and -ENODATA if the property does not have a value.
+ */
+int of_property_count_elems_of_size(const struct device_node *np,
+				const char *propname, int elem_size)
+{
+	struct property *prop = of_find_property(np, propname, NULL);
+
+	if (!prop)
+		return -EINVAL;
+	if (!prop->value)
+		return -ENODATA;
+
+	if (prop->length % elem_size != 0) {
+		pr_err("size of %s in node %s is not a multiple of %d\n",
+		       propname, np->full_name, elem_size);
+		return -EINVAL;
+	}
+
+	return prop->length / elem_size;
+}
+EXPORT_SYMBOL_GPL(of_property_count_elems_of_size);
+
+/**
+ * of_find_property_value_of_size
+ *
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @min:	minimum allowed length of property value
+ * @max:	maximum allowed length of property value (0 means unlimited)
+ * @len:	if !=NULL, actual length is written to here
+ *
+ * Search for a property in a device node and valid the requested size.
+ * Returns the property value on success, -EINVAL if the property does not
+ *  exist, -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data is too small or too large.
+ *
+ */
+static void *of_find_property_value_of_size(const struct device_node *np,
+			const char *propname, u32 min, u32 max, size_t *len)
+{
+	struct property *prop = of_find_property(np, propname, NULL);
+
+	if (!prop)
+		return ERR_PTR(-EINVAL);
+	if (!prop->value)
+		return ERR_PTR(-ENODATA);
+	if (prop->length < min)
+		return ERR_PTR(-EOVERFLOW);
+	if (max && prop->length > max)
+		return ERR_PTR(-EOVERFLOW);
+
+	if (len)
+		*len = prop->length;
+
+	return prop->value;
+}
+
+/**
+ * of_property_read_u32_index - Find and read a u32 from a multi-value property.
+ *
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @index:	index of the u32 in the list of values
+ * @out_value:	pointer to return value, modified only if no error.
+ *
+ * Search for a property in a device node and read nth 32-bit value 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.
+ *
+ * The out_value is modified only if a valid u32 value can be decoded.
+ */
+int of_property_read_u32_index(const struct device_node *np,
+				       const char *propname,
+				       u32 index, u32 *out_value)
+{
+	const u32 *val = of_find_property_value_of_size(np, propname,
+					((index + 1) * sizeof(*out_value)),
+					0,
+					NULL);
+
+	if (IS_ERR(val))
+		return PTR_ERR(val);
+
+	*out_value = be32_to_cpup(((__be32 *)val) + index);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(of_property_read_u32_index);
+
+/**
+ * of_property_read_u64_index - Find and read a u64 from a multi-value property.
+ *
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @index:	index of the u64 in the list of values
+ * @out_value:	pointer to return value, modified only if no error.
+ *
+ * Search for a property in a device node and read nth 64-bit value 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.
+ *
+ * The out_value is modified only if a valid u64 value can be decoded.
+ */
+int of_property_read_u64_index(const struct device_node *np,
+				       const char *propname,
+				       u32 index, u64 *out_value)
+{
+	const u64 *val = of_find_property_value_of_size(np, propname,
+					((index + 1) * sizeof(*out_value)),
+					0, NULL);
+
+	if (IS_ERR(val))
+		return PTR_ERR(val);
+
+	*out_value = be64_to_cpup(((__be64 *)val) + index);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(of_property_read_u64_index);
+
+/**
+ * of_property_read_variable_u8_array - Find and read an array of u8 from a
+ * property, with bounds on the minimum and maximum array size.
+ *
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @out_values:	pointer to return value, modified only if return value is 0.
+ * @sz_min:	minimum number of array elements to read
+ * @sz_max:	maximum number of array elements to read, if zero there is no
+ *		upper limit on the number of elements in the dts entry but only
+ *		sz_min will be read.
+ *
+ * Search for a property in a device node and read 8-bit value(s) from
+ * it. Returns number of elements read on success, -EINVAL if the property
+ * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
+ * if the property data is smaller than sz_min or longer than sz_max.
+ *
+ * dts entry of array should be like:
+ *	property = /bits/ 8 <0x50 0x60 0x70>;
+ *
+ * The out_values is modified only if a valid u8 value can be decoded.
+ */
+int of_property_read_variable_u8_array(const struct device_node *np,
+					const char *propname, u8 *out_values,
+					size_t sz_min, size_t sz_max)
+{
+	size_t sz, count;
+	const u8 *val = of_find_property_value_of_size(np, propname,
+						(sz_min * sizeof(*out_values)),
+						(sz_max * sizeof(*out_values)),
+						&sz);
+
+	if (IS_ERR(val))
+		return PTR_ERR(val);
+
+	if (!sz_max)
+		sz = sz_min;
+	else
+		sz /= sizeof(*out_values);
+
+	count = sz;
+	while (count--)
+		*out_values++ = *val++;
+
+	return sz;
+}
+EXPORT_SYMBOL_GPL(of_property_read_variable_u8_array);
+
+/**
+ * of_property_read_variable_u16_array - Find and read an array of u16 from a
+ * property, with bounds on the minimum and maximum array size.
+ *
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @out_values:	pointer to return value, modified only if return value is 0.
+ * @sz_min:	minimum number of array elements to read
+ * @sz_max:	maximum number of array elements to read, if zero there is no
+ *		upper limit on the number of elements in the dts entry but only
+ *		sz_min will be read.
+ *
+ * Search for a property in a device node and read 16-bit value(s) from
+ * it. Returns number of elements read on success, -EINVAL if the property
+ * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
+ * if the property data is smaller than sz_min or longer than sz_max.
+ *
+ * dts entry of array should be like:
+ *	property = /bits/ 16 <0x5000 0x6000 0x7000>;
+ *
+ * The out_values is modified only if a valid u16 value can be decoded.
+ */
+int of_property_read_variable_u16_array(const struct device_node *np,
+					const char *propname, u16 *out_values,
+					size_t sz_min, size_t sz_max)
+{
+	size_t sz, count;
+	const __be16 *val = of_find_property_value_of_size(np, propname,
+						(sz_min * sizeof(*out_values)),
+						(sz_max * sizeof(*out_values)),
+						&sz);
+
+	if (IS_ERR(val))
+		return PTR_ERR(val);
+
+	if (!sz_max)
+		sz = sz_min;
+	else
+		sz /= sizeof(*out_values);
+
+	count = sz;
+	while (count--)
+		*out_values++ = be16_to_cpup(val++);
+
+	return sz;
+}
+EXPORT_SYMBOL_GPL(of_property_read_variable_u16_array);
+
+/**
+ * of_property_read_variable_u32_array - Find and read an array of 32 bit
+ * integers from a property, with bounds on the minimum and maximum array size.
+ *
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @out_values:	pointer to return value, modified only if return value is 0.
+ * @sz_min:	minimum number of array elements to read
+ * @sz_max:	maximum number of array elements to read, if zero there is no
+ *		upper limit on the number of elements in the dts entry but only
+ *		sz_min will be read.
+ *
+ * Search for a property in a device node and read 32-bit value(s) from
+ * it. Returns number of elements read on success, -EINVAL if the property
+ * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
+ * if the property data is smaller than sz_min or longer than sz_max.
+ *
+ * The out_values is modified only if a valid u32 value can be decoded.
+ */
+int of_property_read_variable_u32_array(const struct device_node *np,
+			       const char *propname, u32 *out_values,
+			       size_t sz_min, size_t sz_max)
+{
+	size_t sz, count;
+	const __be32 *val = of_find_property_value_of_size(np, propname,
+						(sz_min * sizeof(*out_values)),
+						(sz_max * sizeof(*out_values)),
+						&sz);
+
+	if (IS_ERR(val))
+		return PTR_ERR(val);
+
+	if (!sz_max)
+		sz = sz_min;
+	else
+		sz /= sizeof(*out_values);
+
+	count = sz;
+	while (count--)
+		*out_values++ = be32_to_cpup(val++);
+
+	return sz;
+}
+EXPORT_SYMBOL_GPL(of_property_read_variable_u32_array);
+
+/**
+ * of_property_read_u64 - Find and read a 64 bit integer 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.
+ *
+ * Search for a property in a device node and read a 64-bit value 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.
+ *
+ * The out_value is modified only if a valid u64 value can be decoded.
+ */
+int of_property_read_u64(const struct device_node *np, const char *propname,
+			 u64 *out_value)
+{
+	const __be32 *val = of_find_property_value_of_size(np, propname,
+						sizeof(*out_value),
+						0,
+						NULL);
+
+	if (IS_ERR(val))
+		return PTR_ERR(val);
+
+	*out_value = of_read_number(val, 2);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(of_property_read_u64);
+
+/**
+ * of_property_read_variable_u64_array - Find and read an array of 64 bit
+ * integers from a property, with bounds on the minimum and maximum array size.
+ *
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @out_values:	pointer to return value, modified only if return value is 0.
+ * @sz_min:	minimum number of array elements to read
+ * @sz_max:	maximum number of array elements to read, if zero there is no
+ *		upper limit on the number of elements in the dts entry but only
+ *		sz_min will be read.
+ *
+ * Search for a property in a device node and read 64-bit value(s) from
+ * it. Returns number of elements read on success, -EINVAL if the property
+ * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
+ * if the property data is smaller than sz_min or longer than sz_max.
+ *
+ * The out_values is modified only if a valid u64 value can be decoded.
+ */
+int of_property_read_variable_u64_array(const struct device_node *np,
+			       const char *propname, u64 *out_values,
+			       size_t sz_min, size_t sz_max)
+{
+	size_t sz, count;
+	const __be32 *val = of_find_property_value_of_size(np, propname,
+						(sz_min * sizeof(*out_values)),
+						(sz_max * sizeof(*out_values)),
+						&sz);
+
+	if (IS_ERR(val))
+		return PTR_ERR(val);
+
+	if (!sz_max)
+		sz = sz_min;
+	else
+		sz /= sizeof(*out_values);
+
+	count = sz;
+	while (count--) {
+		*out_values++ = of_read_number(val, 2);
+		val += 2;
+	}
+
+	return sz;
+}
+EXPORT_SYMBOL_GPL(of_property_read_variable_u64_array);
+
+/**
+ * of_property_read_string - Find and read a string from a property
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @out_string:	pointer to null terminated return string, modified only if
+ *		return value is 0.
+ *
+ * Search for a property in a device tree node and retrieve a null
+ * terminated string value (pointer to data, not a copy). Returns 0 on
+ * success, -EINVAL if the property does not exist, -ENODATA if property
+ * does not have a value, and -EILSEQ if the string is not null-terminated
+ * within the length of the property data.
+ *
+ * The out_string pointer is modified only if a valid string can be decoded.
+ */
+int of_property_read_string(const struct device_node *np, const char *propname,
+				const char **out_string)
+{
+	const struct property *prop = of_find_property(np, propname, NULL);
+	if (!prop)
+		return -EINVAL;
+	if (!prop->value)
+		return -ENODATA;
+	if (strnlen(prop->value, prop->length) >= prop->length)
+		return -EILSEQ;
+	*out_string = prop->value;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(of_property_read_string);
+
+/**
+ * of_property_match_string() - Find string in a list and return index
+ * @np: pointer to node containing string list property
+ * @propname: string list property name
+ * @string: pointer to string to search for in string list
+ *
+ * This function searches a string list property and returns the index
+ * of a specific string value.
+ */
+int of_property_match_string(const struct device_node *np, const char *propname,
+			     const char *string)
+{
+	const struct property *prop = of_find_property(np, propname, NULL);
+	size_t l;
+	int i;
+	const char *p, *end;
+
+	if (!prop)
+		return -EINVAL;
+	if (!prop->value)
+		return -ENODATA;
+
+	p = prop->value;
+	end = p + prop->length;
+
+	for (i = 0; p < end; i++, p += l) {
+		l = strnlen(p, end - p) + 1;
+		if (p + l > end)
+			return -EILSEQ;
+		pr_debug("comparing %s with %s\n", string, p);
+		if (strcmp(string, p) == 0)
+			return i; /* Found it; return index */
+	}
+	return -ENODATA;
+}
+EXPORT_SYMBOL_GPL(of_property_match_string);
+
+/**
+ * of_property_read_string_helper() - Utility helper for parsing string properties
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @out_strs:	output array of string pointers.
+ * @sz:		number of array elements to read.
+ * @skip:	Number of strings to skip over at beginning of list.
+ *
+ * Don't call this function directly. It is a utility helper for the
+ * of_property_read_string*() family of functions.
+ */
+int of_property_read_string_helper(const struct device_node *np,
+				   const char *propname, const char **out_strs,
+				   size_t sz, int skip)
+{
+	const struct property *prop = of_find_property(np, propname, NULL);
+	int l = 0, i = 0;
+	const char *p, *end;
+
+	if (!prop)
+		return -EINVAL;
+	if (!prop->value)
+		return -ENODATA;
+	p = prop->value;
+	end = p + prop->length;
+
+	for (i = 0; p < end && (!out_strs || i < skip + sz); i++, p += l) {
+		l = strnlen(p, end - p) + 1;
+		if (p + l > end)
+			return -EILSEQ;
+		if (out_strs && i >= skip)
+			*out_strs++ = p;
+	}
+	i -= skip;
+	return i <= 0 ? -ENODATA : i;
+}
+EXPORT_SYMBOL_GPL(of_property_read_string_helper);
+
+const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur,
+			       u32 *pu)
+{
+	const void *curv = cur;
+
+	if (!prop)
+		return NULL;
+
+	if (!cur) {
+		curv = prop->value;
+		goto out_val;
+	}
+
+	curv += sizeof(*cur);
+	if (curv >= prop->value + prop->length)
+		return NULL;
+
+out_val:
+	*pu = be32_to_cpup(curv);
+	return curv;
+}
+EXPORT_SYMBOL_GPL(of_prop_next_u32);
+
+const char *of_prop_next_string(struct property *prop, const char *cur)
+{
+	const void *curv = cur;
+
+	if (!prop)
+		return NULL;
+
+	if (!cur)
+		return prop->value;
+
+	curv += strlen(cur) + 1;
+	if (curv >= prop->value + prop->length)
+		return NULL;
+
+	return curv;
+}
+EXPORT_SYMBOL_GPL(of_prop_next_string);
+
+/**
+ * of_graph_parse_endpoint() - parse common endpoint node properties
+ * @node: pointer to endpoint device_node
+ * @endpoint: pointer to the OF endpoint data structure
+ *
+ * The caller should hold a reference to @node.
+ */
+int of_graph_parse_endpoint(const struct device_node *node,
+			    struct of_endpoint *endpoint)
+{
+	struct device_node *port_node = of_get_parent(node);
+
+	WARN_ONCE(!port_node, "%s(): endpoint %s has no parent node\n",
+		  __func__, node->full_name);
+
+	memset(endpoint, 0, sizeof(*endpoint));
+
+	endpoint->local_node = node;
+	/*
+	 * It doesn't matter whether the two calls below succeed.
+	 * If they don't then the default value 0 is used.
+	 */
+	of_property_read_u32(port_node, "reg", &endpoint->port);
+	of_property_read_u32(node, "reg", &endpoint->id);
+
+	of_node_put(port_node);
+
+	return 0;
+}
+EXPORT_SYMBOL(of_graph_parse_endpoint);
+
+/**
+ * of_graph_get_port_by_id() - get the port matching a given id
+ * @parent: pointer to the parent device node
+ * @id: id of the port
+ *
+ * Return: A 'port' node pointer with refcount incremented. The caller
+ * has to use of_node_put() on it when done.
+ */
+struct device_node *of_graph_get_port_by_id(struct device_node *parent, u32 id)
+{
+	struct device_node *node, *port;
+
+	node = of_get_child_by_name(parent, "ports");
+	if (node)
+		parent = node;
+
+	for_each_child_of_node(parent, port) {
+		u32 port_id = 0;
+
+		if (of_node_cmp(port->name, "port") != 0)
+			continue;
+		of_property_read_u32(port, "reg", &port_id);
+		if (id == port_id)
+			break;
+	}
+
+	of_node_put(node);
+
+	return port;
+}
+EXPORT_SYMBOL(of_graph_get_port_by_id);
+
+/**
+ * of_graph_get_next_endpoint() - get next endpoint node
+ * @parent: pointer to the parent device node
+ * @prev: previous endpoint node, or NULL to get first
+ *
+ * Return: An 'endpoint' node pointer with refcount incremented. Refcount
+ * of the passed @prev node is decremented.
+ */
+struct device_node *of_graph_get_next_endpoint(const struct device_node *parent,
+					struct device_node *prev)
+{
+	struct device_node *endpoint;
+	struct device_node *port;
+
+	if (!parent)
+		return NULL;
+
+	/*
+	 * Start by locating the port node. If no previous endpoint is specified
+	 * search for the first port node, otherwise get the previous endpoint
+	 * parent port node.
+	 */
+	if (!prev) {
+		struct device_node *node;
+
+		node = of_get_child_by_name(parent, "ports");
+		if (node)
+			parent = node;
+
+		port = of_get_child_by_name(parent, "port");
+		of_node_put(node);
+
+		if (!port) {
+			pr_err("graph: no port node found in %s\n",
+			       parent->full_name);
+			return NULL;
+		}
+	} else {
+		port = of_get_parent(prev);
+		if (WARN_ONCE(!port, "%s(): endpoint %s has no parent node\n",
+			      __func__, prev->full_name))
+			return NULL;
+	}
+
+	while (1) {
+		/*
+		 * Now that we have a port node, get the next endpoint by
+		 * getting the next child. If the previous endpoint is NULL this
+		 * will return the first child.
+		 */
+		endpoint = of_get_next_child(port, prev);
+		if (endpoint) {
+			of_node_put(port);
+			return endpoint;
+		}
+
+		/* No more endpoints under this port, try the next one. */
+		prev = NULL;
+
+		do {
+			port = of_get_next_child(parent, port);
+			if (!port)
+				return NULL;
+		} while (of_node_cmp(port->name, "port"));
+	}
+}
+EXPORT_SYMBOL(of_graph_get_next_endpoint);
+
+/**
+ * of_graph_get_endpoint_by_regs() - get endpoint node of specific identifiers
+ * @parent: pointer to the parent device node
+ * @port_reg: identifier (value of reg property) of the parent port node
+ * @reg: identifier (value of reg property) of the endpoint node
+ *
+ * Return: An 'endpoint' node pointer which is identified by reg and at the same
+ * is the child of a port node identified by port_reg. reg and port_reg are
+ * ignored when they are -1.
+ */
+struct device_node *of_graph_get_endpoint_by_regs(
+	const struct device_node *parent, int port_reg, int reg)
+{
+	struct of_endpoint endpoint;
+	struct device_node *node = NULL;
+
+	for_each_endpoint_of_node(parent, node) {
+		of_graph_parse_endpoint(node, &endpoint);
+		if (((port_reg == -1) || (endpoint.port == port_reg)) &&
+			((reg == -1) || (endpoint.id == reg)))
+			return node;
+	}
+
+	return NULL;
+}
+EXPORT_SYMBOL(of_graph_get_endpoint_by_regs);
+
+/**
+ * of_graph_get_remote_endpoint() - get remote endpoint node
+ * @node: pointer to a local endpoint device_node
+ *
+ * Return: Remote endpoint node associated with remote endpoint node linked
+ *	   to @node. Use of_node_put() on it when done.
+ */
+struct device_node *of_graph_get_remote_endpoint(const struct device_node *node)
+{
+	/* Get remote endpoint node. */
+	return of_parse_phandle(node, "remote-endpoint", 0);
+}
+EXPORT_SYMBOL(of_graph_get_remote_endpoint);
+
+/**
+ * of_graph_get_port_parent() - get port's parent node
+ * @node: pointer to a local endpoint device_node
+ *
+ * Return: device node associated with endpoint node linked
+ *	   to @node. Use of_node_put() on it when done.
+ */
+struct device_node *of_graph_get_port_parent(struct device_node *node)
+{
+	unsigned int depth;
+
+	/* Walk 3 levels up only if there is 'ports' node. */
+	for (depth = 3; depth && node; depth--) {
+		node = of_get_next_parent(node);
+		if (depth == 2 && of_node_cmp(node->name, "ports"))
+			break;
+	}
+	return node;
+}
+EXPORT_SYMBOL(of_graph_get_port_parent);
+
+/**
+ * of_graph_get_remote_port_parent() - get remote port's parent node
+ * @node: pointer to a local endpoint device_node
+ *
+ * Return: Remote device node associated with remote endpoint node linked
+ *	   to @node. Use of_node_put() on it when done.
+ */
+struct device_node *of_graph_get_remote_port_parent(
+			       const struct device_node *node)
+{
+	struct device_node *np;
+
+	/* Get remote endpoint node. */
+	np = of_graph_get_remote_endpoint(node);
+
+	return of_graph_get_port_parent(np);
+}
+EXPORT_SYMBOL(of_graph_get_remote_port_parent);
+
+/**
+ * of_graph_get_remote_port() - get remote port node
+ * @node: pointer to a local endpoint device_node
+ *
+ * Return: Remote port node associated with remote endpoint node linked
+ *	   to @node. Use of_node_put() on it when done.
+ */
+struct device_node *of_graph_get_remote_port(const struct device_node *node)
+{
+	struct device_node *np;
+
+	/* Get remote endpoint node. */
+	np = of_graph_get_remote_endpoint(node);
+	if (!np)
+		return NULL;
+	return of_get_next_parent(np);
+}
+EXPORT_SYMBOL(of_graph_get_remote_port);
+
+int of_graph_get_endpoint_count(const struct device_node *np)
+{
+	struct device_node *endpoint;
+	int num = 0;
+
+	for_each_endpoint_of_node(np, endpoint)
+		num++;
+
+	return num;
+}
+EXPORT_SYMBOL(of_graph_get_endpoint_count);
+
+/**
+ * of_graph_get_remote_node() - get remote parent device_node for given port/endpoint
+ * @node: pointer to parent device_node containing graph port/endpoint
+ * @port: identifier (value of reg property) of the parent port node
+ * @endpoint: identifier (value of reg property) of the endpoint node
+ *
+ * Return: Remote device node associated with remote endpoint node linked
+ *	   to @node. Use of_node_put() on it when done.
+ */
+struct device_node *of_graph_get_remote_node(const struct device_node *node,
+					     u32 port, u32 endpoint)
+{
+	struct device_node *endpoint_node, *remote;
+
+	endpoint_node = of_graph_get_endpoint_by_regs(node, port, endpoint);
+	if (!endpoint_node) {
+		pr_debug("no valid endpoint (%d, %d) for node %s\n",
+			 port, endpoint, node->full_name);
+		return NULL;
+	}
+
+	remote = of_graph_get_remote_port_parent(endpoint_node);
+	of_node_put(endpoint_node);
+	if (!remote) {
+		pr_debug("no valid remote node\n");
+		return NULL;
+	}
+
+	if (!of_device_is_available(remote)) {
+		pr_debug("not available for remote node\n");
+		return NULL;
+	}
+
+	return remote;
+}
+EXPORT_SYMBOL(of_graph_get_remote_node);
diff --git a/drivers/of/resolver.c b/drivers/of/resolver.c
index 771f4844c781..99309cb7d372 100644
--- a/drivers/of/resolver.c
+++ b/drivers/of/resolver.c
@@ -20,35 +20,11 @@
 #include <linux/errno.h>
 #include <linux/slab.h>
 
+#include "of_private.h"
+
 /* illegal phandle value (set when unresolved) */
 #define OF_PHANDLE_ILLEGAL	0xdeadbeef
 
-/**
- * Find a node with the give full name by recursively following any of
- * the child node links.
- */
-static struct device_node *find_node_by_full_name(struct device_node *node,
-		const char *full_name)
-{
-	struct device_node *child, *found;
-
-	if (!node)
-		return NULL;
-
-	if (!of_node_cmp(node->full_name, full_name))
-		return of_node_get(node);
-
-	for_each_child_of_node(node, child) {
-		found = find_node_by_full_name(child, full_name);
-		if (found != NULL) {
-			of_node_put(child);
-			return found;
-		}
-	}
-
-	return NULL;
-}
-
 static phandle live_tree_max_phandle(void)
 {
 	struct device_node *node;
@@ -138,7 +114,7 @@ static int update_usages_of_a_phandle_reference(struct device_node *overlay,
 		if (err)
 			goto err_fail;
 
-		refnode = find_node_by_full_name(overlay, node_path);
+		refnode = __of_find_node_by_full_path(of_node_get(overlay), node_path);
 		if (!refnode)
 			continue;
 
@@ -165,8 +141,8 @@ err_fail:
 static int node_name_cmp(const struct device_node *dn1,
 		const struct device_node *dn2)
 {
-	const char *n1 = strrchr(dn1->full_name, '/') ? : "/";
-	const char *n2 = strrchr(dn2->full_name, '/') ? : "/";
+	const char *n1 = kbasename(dn1->full_name);
+	const char *n2 = kbasename(dn2->full_name);
 
 	return of_node_cmp(n1, n2);
 }
diff --git a/drivers/of/unittest-data/tests-platform.dtsi b/drivers/of/unittest-data/tests-platform.dtsi
index eb20eeb2b062..a0c93822aee3 100644
--- a/drivers/of/unittest-data/tests-platform.dtsi
+++ b/drivers/of/unittest-data/tests-platform.dtsi
@@ -26,7 +26,9 @@
 				#size-cells = <0>;
 
 				dev@100 {
-					compatible = "test-sub-device";
+					compatible = "test-sub-device",
+						     "test-compat2",
+						     "test-compat3";
 					reg = <0x100>;
 				};
 			};
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 987a1530282a..0107fc680335 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -239,6 +239,63 @@ static void __init of_unittest_check_tree_linkage(void)
 	pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
 }
 
+static void __init of_unittest_printf_one(struct device_node *np, const char *fmt,
+					  const char *expected)
+{
+	unsigned char buf[strlen(expected)+10];
+	int size, i;
+
+	/* Baseline; check conversion with a large size limit */
+	memset(buf, 0xff, sizeof(buf));
+	size = snprintf(buf, sizeof(buf) - 2, fmt, np);
+
+	/* use strcmp() instead of strncmp() here to be absolutely sure strings match */
+	unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff),
+		"sprintf failed; fmt='%s' expected='%s' rslt='%s'\n",
+		fmt, expected, buf);
+
+	/* Make sure length limits work */
+	size++;
+	for (i = 0; i < 2; i++, size--) {
+		/* Clear the buffer, and make sure it works correctly still */
+		memset(buf, 0xff, sizeof(buf));
+		snprintf(buf, size+1, fmt, np);
+		unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff),
+			"snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n",
+			size, fmt, expected, buf);
+	}
+}
+
+static void __init of_unittest_printf(void)
+{
+	struct device_node *np;
+	const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100";
+	char phandle_str[16] = "";
+
+	np = of_find_node_by_path(full_name);
+	if (!np) {
+		unittest(np, "testcase data missing\n");
+		return;
+	}
+
+	num_to_str(phandle_str, sizeof(phandle_str), np->phandle);
+
+	of_unittest_printf_one(np, "%pOF",  full_name);
+	of_unittest_printf_one(np, "%pOFf", full_name);
+	of_unittest_printf_one(np, "%pOFp", phandle_str);
+	of_unittest_printf_one(np, "%pOFP", "dev@100");
+	of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC");
+	of_unittest_printf_one(np, "%10pOFP", "   dev@100");
+	of_unittest_printf_one(np, "%-10pOFP", "dev@100   ");
+	of_unittest_printf_one(of_root, "%pOFP", "/");
+	of_unittest_printf_one(np, "%pOFF", "----");
+	of_unittest_printf_one(np, "%pOFPF", "dev@100:----");
+	of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device");
+	of_unittest_printf_one(np, "%pOFc", "test-sub-device");
+	of_unittest_printf_one(np, "%pOFC",
+			"\"test-sub-device\",\"test-compat2\",\"test-compat3\"");
+}
+
 struct node_hash {
 	struct hlist_node node;
 	struct device_node *np;
@@ -2269,6 +2326,7 @@ static int __init of_unittest(void)
 	of_unittest_find_node_by_name();
 	of_unittest_dynamic();
 	of_unittest_parse_phandle_with_args();
+	of_unittest_printf();
 	of_unittest_property_string();
 	of_unittest_property_copy();
 	of_unittest_changeset();
diff --git a/include/linux/of.h b/include/linux/of.h
index 50fcdb54087f..fa089a2789a0 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -148,18 +148,28 @@ extern raw_spinlock_t devtree_lock;
 #ifdef CONFIG_OF
 void of_core_init(void);
 
-static inline bool is_of_node(struct fwnode_handle *fwnode)
+static inline bool is_of_node(const struct fwnode_handle *fwnode)
 {
 	return !IS_ERR_OR_NULL(fwnode) && fwnode->type == FWNODE_OF;
 }
 
-static inline struct device_node *to_of_node(struct fwnode_handle *fwnode)
-{
-	return is_of_node(fwnode) ?
-		container_of(fwnode, struct device_node, fwnode) : NULL;
-}
-
-#define of_fwnode_handle(node) (&(node)->fwnode)
+#define to_of_node(__fwnode)						\
+	({								\
+		typeof(__fwnode) __to_of_node_fwnode = (__fwnode);	\
+									\
+		is_of_node(__to_of_node_fwnode) ?			\
+			container_of(__to_of_node_fwnode,		\
+				     struct device_node, fwnode) :	\
+			NULL;						\
+	})
+
+#define of_fwnode_handle(node)						\
+	({								\
+		typeof(node) __of_fwnode_handle_node = (node);		\
+									\
+		__of_fwnode_handle_node ?				\
+			&__of_fwnode_handle_node->fwnode : NULL;	\
+	})
 
 static inline bool of_have_populated_dt(void)
 {
@@ -533,12 +543,12 @@ static inline void of_core_init(void)
 {
 }
 
-static inline bool is_of_node(struct fwnode_handle *fwnode)
+static inline bool is_of_node(const struct fwnode_handle *fwnode)
 {
 	return false;
 }
 
-static inline struct device_node *to_of_node(struct fwnode_handle *fwnode)
+static inline struct device_node *to_of_node(const struct fwnode_handle *fwnode)
 {
 	return NULL;
 }
@@ -627,6 +637,12 @@ static inline int of_device_is_compatible(const struct device_node *device,
 	return 0;
 }
 
+static inline  int of_device_compatible_match(struct device_node *device,
+					      const char *const *compat)
+{
+	return 0;
+}
+
 static inline bool of_device_is_available(const struct device_node *device)
 {
 	return false;
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index 1dfbfd0d8040..013c5418aeec 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -31,9 +31,6 @@ extern void *of_fdt_get_property(const void *blob,
 				 unsigned long node,
 				 const char *name,
 				 int *size);
-extern int of_fdt_is_compatible(const void *blob,
-				unsigned long node,
-				const char *compat);
 extern bool of_fdt_is_big_endian(const void *blob,
 				 unsigned long node);
 extern int of_fdt_match(const void *blob, unsigned long node,
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 9f37d6208e99..86c3385b9eb3 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -31,6 +31,7 @@
 #include <linux/dcache.h>
 #include <linux/cred.h>
 #include <linux/uuid.h>
+#include <linux/of.h>
 #include <net/addrconf.h>
 #ifdef CONFIG_BLOCK
 #include <linux/blkdev.h>
@@ -1470,6 +1471,126 @@ char *flags_string(char *buf, char *end, void *flags_ptr, const char *fmt)
 	return format_flags(buf, end, flags, names);
 }
 
+static const char *device_node_name_for_depth(const struct device_node *np, int depth)
+{
+	for ( ; np && depth; depth--)
+		np = np->parent;
+
+	return kbasename(np->full_name);
+}
+
+static noinline_for_stack
+char *device_node_gen_full_name(const struct device_node *np, char *buf, char *end)
+{
+	int depth;
+	const struct device_node *parent = np->parent;
+	static const struct printf_spec strspec = {
+		.field_width = -1,
+		.precision = -1,
+	};
+
+	/* special case for root node */
+	if (!parent)
+		return string(buf, end, "/", strspec);
+
+	for (depth = 0; parent->parent; depth++)
+		parent = parent->parent;
+
+	for ( ; depth >= 0; depth--) {
+		buf = string(buf, end, "/", strspec);
+		buf = string(buf, end, device_node_name_for_depth(np, depth),
+			     strspec);
+	}
+	return buf;
+}
+
+static noinline_for_stack
+char *device_node_string(char *buf, char *end, struct device_node *dn,
+			 struct printf_spec spec, const char *fmt)
+{
+	char tbuf[sizeof("xxxx") + 1];
+	const char *p;
+	int ret;
+	char *buf_start = buf;
+	struct property *prop;
+	bool has_mult, pass;
+	static const struct printf_spec num_spec = {
+		.flags = SMALL,
+		.field_width = -1,
+		.precision = -1,
+		.base = 10,
+	};
+
+	struct printf_spec str_spec = spec;
+	str_spec.field_width = -1;
+
+	if (!IS_ENABLED(CONFIG_OF))
+		return string(buf, end, "(!OF)", spec);
+
+	if ((unsigned long)dn < PAGE_SIZE)
+		return string(buf, end, "(null)", spec);
+
+	/* simple case without anything any more format specifiers */
+	fmt++;
+	if (fmt[0] == '\0' || strcspn(fmt,"fnpPFcC") > 0)
+		fmt = "f";
+
+	for (pass = false; strspn(fmt,"fnpPFcC"); fmt++, pass = true) {
+		if (pass) {
+			if (buf < end)
+				*buf = ':';
+			buf++;
+		}
+
+		switch (*fmt) {
+		case 'f':	/* full_name */
+			buf = device_node_gen_full_name(dn, buf, end);
+			break;
+		case 'n':	/* name */
+			buf = string(buf, end, dn->name, str_spec);
+			break;
+		case 'p':	/* phandle */
+			buf = number(buf, end, (unsigned int)dn->phandle, num_spec);
+			break;
+		case 'P':	/* path-spec */
+			p = kbasename(of_node_full_name(dn));
+			if (!p[1])
+				p = "/";
+			buf = string(buf, end, p, str_spec);
+			break;
+		case 'F':	/* flags */
+			tbuf[0] = of_node_check_flag(dn, OF_DYNAMIC) ? 'D' : '-';
+			tbuf[1] = of_node_check_flag(dn, OF_DETACHED) ? 'd' : '-';
+			tbuf[2] = of_node_check_flag(dn, OF_POPULATED) ? 'P' : '-';
+			tbuf[3] = of_node_check_flag(dn, OF_POPULATED_BUS) ? 'B' : '-';
+			tbuf[4] = 0;
+			buf = string(buf, end, tbuf, str_spec);
+			break;
+		case 'c':	/* major compatible string */
+			ret = of_property_read_string(dn, "compatible", &p);
+			if (!ret)
+				buf = string(buf, end, p, str_spec);
+			break;
+		case 'C':	/* full compatible string */
+			has_mult = false;
+			of_property_for_each_string(dn, "compatible", prop, p) {
+				if (has_mult)
+					buf = string(buf, end, ",", str_spec);
+				buf = string(buf, end, "\"", str_spec);
+				buf = string(buf, end, p, str_spec);
+				buf = string(buf, end, "\"", str_spec);
+
+				has_mult = true;
+			}
+			break;
+		default:
+			break;
+		}
+	}
+
+	return widen_string(buf, buf - buf_start, end, spec);
+}
+
 int kptr_restrict __read_mostly;
 
 /*
@@ -1566,6 +1687,16 @@ int kptr_restrict __read_mostly;
  *       p page flags (see struct page) given as pointer to unsigned long
  *       g gfp flags (GFP_* and __GFP_*) given as pointer to gfp_t
  *       v vma flags (VM_*) given as pointer to unsigned long
+ * - 'O' For a kobject based struct. Must be one of the following:
+ *       - 'OF[fnpPcCF]'  For a device tree object
+ *                        Without any optional arguments prints the full_name
+ *                        f device node full_name
+ *                        n device node name
+ *                        p device node phandle
+ *                        P device node path spec (name + @unit)
+ *                        F device node flags
+ *                        c major compatible string
+ *                        C full compatible string
  *
  * ** Please update also Documentation/printk-formats.txt when making changes **
  *
@@ -1721,6 +1852,11 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
 
 	case 'G':
 		return flags_string(buf, end, ptr, fmt);
+	case 'O':
+		switch (fmt[1]) {
+		case 'F':
+			return device_node_string(buf, end, ptr, spec, fmt + 1);
+		}
 	}
 	spec.flags |= SMALL;
 	if (spec.field_width == -1) {
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index c7e4d73fe1ce..57e7daa2bdf9 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5692,7 +5692,7 @@ sub process {
 		        for (my $count = $linenr; $count <= $lc; $count++) {
 				my $fmt = get_quoted_string($lines[$count - 1], raw_line($count, 0));
 				$fmt =~ s/%%//g;
-				if ($fmt =~ /(\%[\*\d\.]*p(?![\WFfSsBKRraEhMmIiUDdgVCbGN]).)/) {
+				if ($fmt =~ /(\%[\*\d\.]*p(?![\WFfSsBKRraEhMmIiUDdgVCbGNO]).)/) {
 					$bad_extension = $1;
 					last;
 				}
diff --git a/scripts/dtc/dtx_diff b/scripts/dtc/dtx_diff
index ec47f95991a3..fb86f3899e16 100755
--- a/scripts/dtc/dtx_diff
+++ b/scripts/dtc/dtx_diff
@@ -338,7 +338,7 @@ DTC="${DTC} ${dtc_flags} -O dts -qq -f ${dtc_sort} -o -"
 
 if (( ${cmd_diff} )) ; then
 
-	diff ${diff_flags} \
+	diff ${diff_flags} --label "${dtx_file_1}" --label "${dtx_file_2}" \
 		<(compile_to_dts "${dtx_file_1}") \
 		<(compile_to_dts "${dtx_file_2}")