This adds the following commits from upstream:

cbca977ea121 checks: Allow PCI bridge child nodes without an address
73e0f143b73d libfdt: fdt_strerror(): Fix comparison warning
6c2be7d85315 libfdt: fdt_get_string(): Fix sequential write comparison warnings
82525f41d59e libfdt: libfdt_wip: Fix comparison warning
fb1f65f15832 libfdt: fdt_create_with_flags(): Fix comparison warning
f28aa271000b libfdt: fdt_move(): Fix comparison warnings
3d7c6f44195a libfdt: fdt_add_string_(): Fix comparison warning
10f682788c30 libfdt: fdt_node_offset_by_phandle(): Fix comparison warning
07158f4cf2a2 libfdt: overlay: Fix comparison warning
ce9e1f25a7de libfdt: fdt_resize(): Fix comparison warning
faa76fc10bc5 libfdt: fdt_splice_(): Fix comparison warning
54dca0985316 libfdt: fdt_get_string(): Fix comparison warnings
f8e11e61624e libfdt: fdt_grab_space_(): Fix comparison warning
0c43d4d7bf5a libfdt: fdt_mem_rsv(): Fix comparison warnings
442ea3dd1579 libfdt: fdt_offset_ptr(): Fix comparison warnings
ca19c3db2bf6 Makefile: Specify cflags for libyaml
7bb86f1c0956 libfdt: fix fdt_check_node_offset_ w/ VALID_INPUT
3d522abc7571 dtc: Include stdlib.h in util.h
808cdaaf524f dtc: Avoid UB when shifting
3e3138b4a956 libfdt: fix fdt_check_full buffer overrun
Signed-off-by: Rob Herring <robh@kernel.org>

Add a yamllint config file and support for running yamllint on DT
binding schema files. This runs on the whole tree as yamllint is Python
and suffers from Python's slow startup times.

Users can run on individual files doing:

yamllint -c Documentation/devicetree/bindings/.yamllint <binding file>

Link: https://lore.kernel.org/r/20201009170557.168785-1-robh@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Document the PowerPC specific 'sleep' property as a schema. It is
currently only documented in booting-without-of.rst which is getting
removed.

Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201008142420.2083861-1-robh@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Fix comment typo.
s/abitrary/arbitrary/
Signed-off-by: Naoki Hayama <naoki.hayama@lineo.co.jp>
Link: https://lore.kernel.org/r/614fe604-ab8e-21cb-0c3a-db6ddeff2a4e@lineo.co.jpSigned-off-by: Rob Herring <robh@kernel.org>

Fix comment typo.
s/abitrary/arbitrary/
Signed-off-by: Naoki Hayama <naoki.hayama@lineo.co.jp>
Link: https://lore.kernel.org/r/7d1856e2-84c7-ab19-863d-2d500569d58c@lineo.co.jpSigned-off-by: Rob Herring <robh@kernel.org>

In order to add meta-schema checks for additional/unevaluatedProperties
being present, all schema need to make this explicit. As common/shared
schema are included by other schemas, they should always allow for
additionalProperties.
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20201005183830.486085-5-robh@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

In cases where we don't reference another schema, 'additionalProperties'
can be used instead. This is preferred for now as 'unevaluatedProperties'
support isn't implemented yet.

In a few cases, this means adding some missing property definitions of
which most are for SPI bus properties. 'unevaluatedProperties' is not going
to work for the SPI bus properties anyways as they are evaluated from the
parent node, not the SPI child node.
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20201005183830.486085-3-robh@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

This doesn't yet do anything in the tools, but make it explicit so we can
check either 'unevaluatedProperties' or 'additionalProperties' is present
in schemas.

'unevaluatedProperties' is appropriate when including another schema (via
'$ref') and all possible properties and/or child nodes are not
explicitly listed in the schema with the '$ref'.

This is in preparation to add a meta-schema to check for missing
'unevaluatedProperties' or 'additionalProperties'. This has been a
constant source of review issues.
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Wolfram Sang <wsa@kernel.org>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-By: Vinod Koul <vkoul@kernel.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://lore.kernel.org/r/20201005183830.486085-2-robh@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Revised patch fixing six spelling errors within
Documentation/devicetree/bindings/. "specfied" replaced with "specified"
in all three files modified. "atleast" seperated into "at least" three
times in samsung-pinctrl.txt. This should remove any confusion that a
reader might have.
Signed-off-by: Marlon Rac Cambasis <marlonrc08@gmail.com>
Link: https://lore.kernel.org/r/20201007071705.GA11381@marlonpc-debianSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Hisilicon Hi6220 domain controllers binding to DT schema
format using json-schema. All of them are grouped into one yaml file, to
help users understand differences and avoid repeated descriptions.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20200930031712.2365-16-thunder.leizhen@huawei.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert device tree bindings for SiFive's PWM controller to YAML
format.
Signed-off-by: Sagar Kadam <sagar.kadam@sifive.com>
Link: https://lore.kernel.org/r/1601393531-2402-4-git-send-email-sagar.kadam@sifive.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert device tree bindings for SiFive's PLIC to YAML format
Signed-off-by: Sagar Kadam <sagar.kadam@sifive.com>
Link: https://lore.kernel.org/r/1601393531-2402-3-git-send-email-sagar.kadam@sifive.comSigned-off-by: Rob Herring <robh@kernel.org>

FU540-C000 SoC from SiFive has a PRCI block, here we convert
the device tree bindings from txt to YAML.
Signed-off-by: Sagar Kadam <sagar.kadam@sifive.com>
Link: https://lore.kernel.org/r/1601393531-2402-2-git-send-email-sagar.kadam@sifive.comSigned-off-by: Rob Herring <robh@kernel.org>

There are two vendor prefixes for Gateworks: "gw" and "gateworks".
Favor the longer one (more descriptive) and mark "gw" as deprecated so
it will not be used in new bindings.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201003103335.23404-1-krzk@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Another round of wack-a-mole. The json-schema default is additional
unknown properties are allowed, but for DT all properties should be
defined.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Baolin Wang <baolin.wang7@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-By: Vinod Koul <vkoul@kernel.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Mark Brown <broonie@kernel.org>
Reviewd-by: Corey Minyard <cminyard@mvista.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Sebastian Reichel <sre@kernel.org>
Link: https://lore.kernel.org/r/20201002234143.3570746-1-robh@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Update the AM65x HwSpinlock example to fix couple of warnings
that started showing up after the conversion of K3 bindings to
YAML format in commit 66e06509 ("dt-bindings: arm: ti:
Convert K3 board/soc bindings to DT schema").

 compatible: ['ti,am654'] is not valid under any of the given schemas (Possible causes of the failure):
 compatible: ['ti,am654'] is too short
 compatible:0: 'ti,am654' is not one of ['ti,am654-evm']

Also, fix one of the node names while at this.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Suman Anna <s-anna@ti.com>
Link: https://lore.kernel.org/r/20200928225155.12432-1-s-anna@ti.comSigned-off-by: Rob Herring <robh@kernel.org>

The i.MX 53 and i.MX6Q DTS use two compatibles, i.MX 6SL/6SLL/SX three
so update the binding to fix dtbs_check warnings like:

  serial@21ec000: compatible: ['fsl,imx6q-uart', 'fsl,imx21-uart'] is not valid under any of the given schemas
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200925212649.23183-1-krzk@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Add quite common property - power-domains - to fix dtbs_check warnings
like:

  arch/arm64/boot/dts/freescale/imx8qxp-mek.dt.yaml:
    mailbox@5d280000: 'power-domains' does not match any of the regexes: 'pinctrl-[0-9]+'
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201002161837.5784-1-krzk@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Pattern properties go under 'patternProperties', not 'properties'.
Otherwise, the pattern is treated as a literal string.

A corresponding meta-schema check has been added to catch bad DT property
names like this.

Fixes: e0f94691 ("dt-bindings: mfd: ti,j721e-system-controller.yaml: Add J721e system controller")
Cc: Roger Quadros <rogerq@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201002230606.3522954-1-robh@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Some DSI controllers are missing a reference to the recently added
dsi-controller.yaml schema. Add it and we can drop the duplicate parts.

Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Eric Anholt <eric@anholt.net>
Cc: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Robert Chiras <robert.chiras@nxp.com>
Cc: Philippe Cornu <philippe.cornu@st.com>
Cc: Yannick Fertre <yannick.fertre@st.com>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20201002225924.3513700-1-robh@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Board/SoC top-level compatible bindings should be constrained to the root
node. Add the missing constraints that the node name must be "/".

Cc: Baruch Siach <baruch@tkos.co.il>
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Krzysztof Halasa <khalasa@piap.pl>
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Anders Berg <anders.berg@lsi.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Alexandre TORGUE <alexandre.torgue@st.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20201001200943.1193870-1-robh@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Convert the device tree bindings for the SiFive's FU540-C000 SoC's L2 Cache
controller to YAML format.
Signed-off-by: Sagar Kadam <sagar.kadam@sifive.com>
Link: https://lore.kernel.org/r/1601381896-29716-2-git-send-email-sagar.kadam@sifive.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Hisilicon Hip06 SoCs implement a Low Pin Count (LPC)
controller binding to DT schema format using json-schema.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20200929141454.2312-18-thunder.leizhen@huawei.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Hisilicon Hi3798CV200 Peripheral Controller binding to DT
schema format using json-schema.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20200929141454.2312-17-thunder.leizhen@huawei.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Hisilicon Bootwrapper boot method binding to DT schema format
using json-schema.

The property boot-method contains two groups of physical address range
information: bootwrapper and relocation. The "uint32-array" type is not
suitable for it, because the field "address" and "size" may occupy one or
two cells respectively. Use "minItems: 1" and "maxItems: 2" to allow it
can be written in "<addr size addr size>" or "<addr size>, <addr size>"
format.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20200929141454.2312-15-thunder.leizhen@huawei.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Hisilicon Fabric controller binding to DT schema format using
json-schema.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20200929141454.2312-14-thunder.leizhen@huawei.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Hisilicon peripheral misc control register binding to DT
schema format using json-schema.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20200929141454.2312-13-thunder.leizhen@huawei.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Hisilicon CPU controller binding to DT schema format using
json-schema.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20200929141454.2312-12-thunder.leizhen@huawei.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Hisilicon system controller and its variants binding to DT
schema format using json-schema. All of them are grouped into one yaml
file, to help users understand differences and avoid repeated
descriptions.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20200929141454.2312-11-thunder.leizhen@huawei.comSigned-off-by: Rob Herring <robh@kernel.org>

Add devicetree binding for Hisilicon SD5203 SoC.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20200929141454.2312-6-thunder.leizhen@huawei.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert Hisilicon SoC bindings to DT schema format using json-schema.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>

Split the devicetree bindings of each Hisilicon controller from
hisilicon.txt into a separate file, the file name is the compatible name
attach the .txt file name extension.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20200929141454.2312-4-thunder.leizhen@huawei.comSigned-off-by: Rob Herring <robh@kernel.org>

The compatible strings of Hi6220 SRAM controller, HiP05/HiP06 PCIe-SAS
subsystem controller, HiP05/HiP06 PERI subsystem controller and
HiP05/HiP06 DSA subsystem controller is in syscon.yaml now.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20200929141454.2312-3-thunder.leizhen@huawei.comSigned-off-by: Rob Herring <robh@kernel.org>

Add some compatible strings for Hisilicon controllers:
hisilicon,hi6220-sramctrl  --> Hi6220 SRAM controller
hisilicon,pcie-sas-subctrl --> HiP05/HiP06 PCIe-SAS subsystem controller
hisilicon,peri-subctrl     --> HiP05/HiP06 PERI subsystem controller
hisilicon,dsa-subctrl      --> HiP05/HiP06 DSA subsystem controller
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20200929141454.2312-2-thunder.leizhen@huawei.com
[robh: sort entries alphabetically]
Signed-off-by: Rob Herring <robh@kernel.org>

When building with

	$ HOST_EXTRACFLAGS=-g make

the expectation is that host tools are built with debug informations.
This however doesn't happen if the Makefile assigns a new value to the
HOST_EXTRACFLAGS instead of appending to it. So use += instead of := for
the first assignment.

Fixes: e3fd9b53 ("scripts/dtc: consolidate include path options in Makefile")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Rob Herring <robh@kernel.org>

The default sizes in examples for 'reg' are 1 cell each. Fix the
incorrect sizes in zynqmp examples:

Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.example.dt.yaml: example-0: dma-controller@fd4c0000:reg:0: [0, 4249616384, 0, 4096] is too long
	From schema: /usr/local/lib/python3.8/dist-packages/dtschema/schemas/reg.yaml
Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.example.dt.yaml: example-0: display@fd4a0000:reg:0: [0, 4249485312, 0, 4096] is too long
	From schema: /usr/local/lib/python3.8/dist-packages/dtschema/schemas/reg.yaml
Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.example.dt.yaml: example-0: display@fd4a0000:reg:1: [0, 4249526272, 0, 4096] is too long
	From schema: /usr/local/lib/python3.8/dist-packages/dtschema/schemas/reg.yaml
Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.example.dt.yaml: example-0: display@fd4a0000:reg:2: [0, 4249530368, 0, 4096] is too long
	From schema: /usr/local/lib/python3.8/dist-packages/dtschema/schemas/reg.yaml
Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.example.dt.yaml: example-0: display@fd4a0000:reg:3: [0, 4249534464, 0, 4096] is too long
	From schema: /usr/local/lib/python3.8/dist-packages/dtschema/schemas/reg.yaml

Cc: Hyun Kwon <hyun.kwon@xilinx.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: dri-devel@lists.freedesktop.org
Cc: dmaengine@vger.kernel.org
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Rob Herring <robh@kernel.org>

Document vendor prefix for Zealz.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200926162811.5335-5-krzk@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Document vendor prefix for Wandbord/Technexion.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200926162811.5335-4-krzk@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Document vendor prefix for Embest RIoT.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200926162811.5335-3-krzk@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>