Convert the Broadcom iProc RNG200 HWRNG Device Tree binding to YAML to
help with validation.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211208003727.3596577-11-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Broadcom STB L2 generic Level 2 interrupt controller Device
Tree binding to YAML to help with validation.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211208003727.3596577-10-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Broadcom STB BCM7038 Level 1 interrupt controller Device
Tree binding to YAML to help with validation.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211208003727.3596577-7-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Broadcom STB GPIO Device Tree binding to YAML to help with
validation.
Acked-by: Gregory Fong <gregory.0xf0@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20211208003727.3596577-6-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Broadcom STB waketimer Device Tree binding to YAML to help
with validation.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211208003727.3596577-5-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Broadcom STB BCM7038 PWM Device Tree binding to YAML to help
with validation.
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211208003727.3596577-4-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Broadcom STB SW_INIT style reset controller binding to YAML.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20211208003727.3596577-3-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Conver the iProc PCIe controller Device Tree binding to YAML now that
all DTS in arch/arm and arch/arm64 have been fixed to be compliant.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211214035820.2984289-7-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Broadcom Cygnus PCIe PHY Device Tree binding t YAML to help
with validation.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211214035820.2984289-6-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the NVIDIA Tegra186 (and later) BPMP I2C bindings from the
free-form text format to json-schema.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20211208143306.534700-1-thierry.reding@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Add compatible strings for the NVIDIA Denver and Carmel PMUs.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20211207150746.444478-1-thierry.reding@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Add bindings for the 2020 and 2021 cohorts of Cortex-A and Neoverse
CPUs, now featuring their Cortex-X cousins as well.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/a36014d06d308c73d3fa1ed55e8967fb8adadf0d.1638900542.git.robin.murphy@arm.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Broadcom SYSTEMPORT Ethernet controller Device Tree binding
to YAML.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211208202801.3706929-3-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Broadcom AMAC Device Tree binding to YAML to help with
schema and dtbs checking.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211208202801.3706929-2-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Conver the Broadcom iProc MDIO mux Device Tree binding to YAML.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211206180049.2086907-9-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Broadcom Northstar 2 PCIe PHY Device Tree binding to YAML
and rename it accordingly in the process since it had nothing to do with
a MDIO mux on the PCI(e) bus. This is a pre-requisite to updating
another binding file to YAML.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211206180049.2086907-8-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Convert the GENET binding to YAML, leveraging brcm,unimac-mdio.yaml and
the standard ethernet-controller.yaml files.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211206180049.2086907-5-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

MoCA (Multimedia over Coaxial) is used by the internal GENET/MOCA cores
and will be needed in order to convert GENET to YAML in subsequent
changes.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211206180049.2086907-4-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Add Doug and myself as maintainers since this binding is used by the
GENET Ethernet controller for its internal MDIO controller.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211206180049.2086907-3-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

The UniMAC MDIO controller integrated into GENET does not provide a
reg-names property since it is optional, reflect that in the binding.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211206180049.2086907-2-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

The compatible property is required, make sure the binding documents it
as such.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211202223609.1171452-1-f.fainelli@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

The old "ak" vendor prefix that was never officially accepted was still
being used in some examples. Convert to the correct vendor prefix (i.e.
"asahi-kasei").
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20211206144802.217073-1-thierry.reding@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

There are valid cases when two nodes can have the same address. For
example, in Exynos SoCs there is USI IP-core, which might be configured
to provide UART, SPI or I2C block, all of which having the same base
register address. But only one can be enabled at a time. That looks like
this:

    usi@138200c0 {
        serial@13820000 {
            status = "okay";
        };

        i2c@13820000 {
            status = "disabled";
        };
    };

When running "make dt_binding_check", it reports next warning:

    Warning (unique_unit_address):
    /example-0/usi@138200c0/serial@13820000:
    duplicate unit-address (also used in node
    /example-0/usi@138200c0/i2c@13820000)

Disable "unique_unit_address" in DTC_FLAGS to suppress warnings like
that, but enable "unique_unit_address_if_enabled" warning, so that dtc
still reports a warning when two enabled nodes are having the same
address.
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Reported-by: Rob Herring <robh@kernel.org>
Suggested-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211203183517.11390-1-semen.protsenko@linaro.orgSigned-off-by: Rob Herring <robh@kernel.org>

Convert the Cadence MACB/GEM Ethernet controller Device Tree binding
documentation to json-schema.

Re-add "cdns,gem" (removed in commit a217d871 ("dt-bindings:
Remove PicoXcell bindings")) as there are active users on non-PicoXcell
platforms.
Add missing "ether_clk" clock.
Add missing properties.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/104dcbfd22f95fc77de9fe15e8abd83869603ea5.1637927673.git.geert@linux-m68k.orgSigned-off-by: Rob Herring <robh@kernel.org>

To improve human readability and enable automatic validation, the tuples
in "interrupts" properties should be grouped using angle brackets.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20211125150233.161576-1-geert@linux-m68k.orgSigned-off-by: Rob Herring <robh@kernel.org>

Both are already used by HW and drivers inside Linux.

Fix warnings as:
arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28-var2.dt.yaml: ethernet@0,2: fixed-link:speed:0:0: 2500 is not one of [10, 100, 1000]
        From schema: Documentation/devicetree/bindings/net/ethernet-controller.yaml
Signed-off-by: David Heidelberg <david@ixit.cz>
Link: https://lore.kernel.org/r/20211124202046.81136-1-david@ixit.czSigned-off-by: Rob Herring <robh@kernel.org>

Allow fully disabling CPU nodes using status = "fail".

This allows a bootloader to change the number of available CPUs (for
example when a common DTS is used for SoC variants with different numbers
of cores) without deleting the nodes altogether, which could require
additional fixups to avoid dangling phandle references.

Unknown status values (everything that is not "okay"/"ok", "disabled" or
"fail"/"fail-...") will continue to be interpreted like "disabled",
meaning that the CPU can be enabled during boot.

References:
- https://www.spinics.net/lists/devicetree-spec/msg01007.html
- https://github.com/devicetree-org/dt-schema/pull/61

Link: https://lore.kernel.org/all/CAL_Jsq+1LsTBdVaODVfmB0eme2jMpNL4VgKk-OM7rQWyyF0Jbw@mail.gmail.com/Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Tested-by: Sai Prakash Ranjan <quic_saipraka@quicinc.com>
Reviewed-by: Frank Rowand <frank.rowand@sony.com>
Link: https://lore.kernel.org/r/20211122114536.2981-1-matthias.schiffer@ew.tq-group.comSigned-off-by: Rob Herring <robh@kernel.org>

Add Sensirion SHT4x, a precision temperature and humidity sensor, to
trivial-devices.yaml.
Signed-off-by: David Mosberger-Tang <davidm@egauge.net>
Link: https://lore.kernel.org/r/20211121161320.2312393-1-davidm@egauge.netSigned-off-by: Rob Herring <robh@kernel.org>

Some PL011 implementations provide a reset line to the silicon
IP block, add a device tree property for this.

Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20211120011418.2630449-1-linus.walleij@linaro.orgSigned-off-by: Rob Herring <robh@kernel.org>

Few Texas Instruments DC-DC converters on PMBus like TPS544B20 do not
have bindings and are used only as hardware monitoring sensor.  These
devices are actually not trivial and can receive basic configuration
(e.g. power up mode, CNTL pin polarity, expected input voltage), however
devicetree support for configuration was never added.

Therefore in current state the devices are used only in read-only mode
and have trivial bindings, so document them to have basic dtschema
tests.

Cc: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20211116110207.68494-1-krzysztof.kozlowski@canonical.comSigned-off-by: Rob Herring <robh@kernel.org>

This helps validating DTS files.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Link: https://lore.kernel.org/r/20211114225416.3174-1-zajec5@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

The ARM Cortex-A78 CPU can be found in a number of recent SoCs such as
the NVIDIA Tegra234 (Orin).
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Robin Murphy <robin.muephy@arm.com>
Link: https://lore.kernel.org/r/20211112131904.3683428-1-thierry.reding@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

When converting the thermal-zones bindings to yaml the definition of the
contribution property changed. The intention is the same, an integer
value expressing a ratio of a sum on how much cooling is provided by the
device to the zone. But after the conversion the integer value is
limited to the range 0 to 100 and expressed as a percentage.

This is problematic for two reasons.

- This do not match how the binding is used. Out of the 18 files that
  make use of the property only two (ste-dbx5x0.dtsi and
  ste-hrefv60plus.dtsi) sets it at a value that satisfy the binding,
  100. The remaining 16 files set the value higher and fail to validate.

- Expressing the value as a percentage instead of a ratio of the sum is
  confusing as there is nothing to enforce the sum in the zone is not
  greater then 100.

This patch restore the pre yaml conversion description and removes the
value limitation allowing the usage of the bindings to validate.

Fixes: 1202a442 ("dt-bindings: thermal: Add yaml bindings for thermal zones")
Reported-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20211109103045.1403686-1-niklas.soderlund+renesas@ragnatech.seSigned-off-by: Rob Herring <robh@kernel.org>

Sync all formats from simplefb.h into documentation.
Signed-off-by: David Heidelberg <david@ixit.cz>
Link: https://lore.kernel.org/r/20211108183322.68192-1-david@ixit.czSigned-off-by: Rob Herring <robh@kernel.org>

In the struct supplier_bindings the member 'node_not_dev' is described as
"The consumer node containing the property is never a device.", but that is
inconsistent with the behaviour of the code in of_link_property(), as it
calls of_get_compat_node() that starts parsing for a compatible property
from the node it gets passed to it. The proper behaviour is to start at the
node's parent, so let's do that.

While at it, let's take the opportunity to update the description of the
'node_not_dev' flag, as to clarify its purpose.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Saravana Kannan <saravanak@google.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210902090221.820254-1-ulf.hansson@linaro.org

Add vendor prefix for T-Head Semiconductor [1] [2]

[1] https://github.com/T-head-Semi
[2] https://www.t-head.cn/Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree <devicetree@vger.kernel.org>
Link: https://lore.kernel.org/r/20211103020921.3870764-1-guoren@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Add Kconfig support for -Wimplicit-fallthrough for both GCC and Clang.

The compiler option is under configuration CC_IMPLICIT_FALLTHROUGH,
which is enabled by default.

Special thanks to Nathan Chancellor who fixed the Clang bug[1][2]. This
bugfix only appears in Clang 14.0.0, so older versions still contain
the bug and -Wimplicit-fallthrough won't be enabled for them, for now.

This concludes a long journey and now we are finally getting rid
of the unintentional fallthrough bug-class in the kernel, entirely. :)

Link: https://github.com/llvm/llvm-project/commit/9ed4a94d6451046a51ef393cd62f00710820a7e8 [1]
Link: https://bugs.llvm.org/show_bug.cgi?id=51094 [2]
Link: https://github.com/KSPP/linux/issues/115
Link: https://github.com/ClangBuiltLinux/linux/issues/236Co-developed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Co-developed-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull xfs cleanups from Darrick Wong:
 "The most 'exciting' aspect of this branch is that the xfsprogs
  maintainer and I have worked through the last of the code
  discrepancies between kernel and userspace libxfs such that there are
  no code differences between the two except for #includes.

  IOWs, diff suffices to demonstrate that the userspace tools behave the
  same as the kernel, and kernel-only bits are clearly marked in the
  /kernel/ source code instead of just the userspace source.

  Summary:

   - Clean up open-coded swap() calls.

   - A little bit of #ifdef golf to complete the reunification of the
     kernel and userspace libxfs source code"

* tag 'xfs-5.16-merge-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: sync xfs_btree_split macros with userspace libxfs
  xfs: #ifdef out perag code for userspace
  xfs: use swap() to make dabtree code cleaner

Pull more parisc fixes from Helge Deller:
 "Fix a build error in stracktrace.c, fix resolving of addresses to
  function names in backtraces, fix single-stepping in assembly code and
  flush userspace pte's when using set_pte_at()"

* tag 'for-5.16/parisc-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc/entry: fix trace test in syscall exit path
  parisc: Flush kernel data mapping in set_pte_at() when installing pte for user page
  parisc: Fix implicit declaration of function '__kernel_text_address'
  parisc: Fix backtrace to always include init funtion names