On current ST platforms the LPC controls a number of functions including
Watchdog and Real Time Clock. This patch provides the bindings used to
configure LPC in Watchdog mode.
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This patchset attempts to standardize the naming of dt-bindings
documents based on the Broadcom vendor prefix of brcm.
Although there are no guidelines currently present for how to name
the dt-bindings document the "vendor,binding.txt" style is in use by
some of the other vendors.
Acked-by: Lee Jones <lee@kernel.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Gregory Fong <gregory.0xf0@gmail.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Rob Herring <robh@kernel.org>
atmel,idle-halt property should be used with care, it actually makes the
watchdog not counting when the CPU is in idle state, therefore the
watchdog reset time depends on mean CPU usage and will not reset at all
of the CPU stop working while it is in idle state, which is probably not
what you want.
Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
On some chips, like the TPS386000, the trigger cannot be disabled
and the CPU must keep toggling the line at all times. Add a switch
"always_running" to keep toggling the GPIO line regardless of the
state of the soft part of the watchdog. The "armed" member keeps
track of whether a timeout must also cause a reset.
Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Daniel Lezcano muttered:
* Marvell timer updates from Ezequiel Garcia
- Add missing clock enable calls for armada
- Change source clock for clocksource and watchdog
* SIRF timer updates from Yanchang Li
- Make clock rate configurable
The 25 MHz reference clock has better stability so its use is prefered over the
core clock. Change the Armada 375 clock initialization to use this reference
clock. To ensure the driver is compatible with an old devicetree, also provide
a fallback path which will silently return to the previous behavior.
While here, add the clock specification to the binding documentation.
Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Wim Van Sebroeck <wim@iguana.be>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Exynos7 SoC has a Watchdog for Atlas (A57) cores
This patch adds support for the Atlas watchdog.
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
The Qualcomm Krait Processor Sub-system (KPSS) contains one or more
instances of the WDT. Provide documentation on how to describe these in
the device tree.
Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This watchdog driver will be working on IMX2+, Vybrid, LS1, LS2+
platforms, and will be in different endianness mode in those SoCs:
SoCs WDT endian mode
------------------------------------
IMX2+ LE
Vybird LE
LS1 BE
LS2 LE
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit documents the new support for "marvell,armada-{375,380}-wdt"
compatible strings and the extra 'reg' entry requirement.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
These changes are mostly for ARM specific device drivers that either
don't have an upstream maintainer, or that had the maintainer ask
us to pick up the changes to avoid conflicts. A large chunk of this
are clock drivers (bcm281xx, exynos, versatile, shmobile), aside from
that, reset controllers for STi as well as a large rework of the
Marvell Orion/EBU watchdog driver are notable.
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Merge tag 'drivers-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver changes from Arnd Bergmann:
"These changes are mostly for ARM specific device drivers that either
don't have an upstream maintainer, or that had the maintainer ask us
to pick up the changes to avoid conflicts.
A large chunk of this are clock drivers (bcm281xx, exynos, versatile,
shmobile), aside from that, reset controllers for STi as well as a
large rework of the Marvell Orion/EBU watchdog driver are notable"
* tag 'drivers-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (99 commits)
Revert "dts: socfpga: Add DTS entry for adding the stmmac glue layer for stmmac."
Revert "net: stmmac: Add SOCFPGA glue driver"
ARM: shmobile: r8a7791: Fix SCIFA3-5 clocks
ARM: STi: Add reset controller support to mach-sti Kconfig
drivers: reset: stih416: add softreset controller
drivers: reset: stih415: add softreset controller
drivers: reset: Reset controller driver for STiH416
drivers: reset: Reset controller driver for STiH415
drivers: reset: STi SoC system configuration reset controller support
dts: socfpga: Add sysmgr node so the gmac can use to reference
dts: socfpga: Add support for SD/MMC on the SOCFPGA platform
reset: Add optional resets and stubs
ARM: shmobile: r7s72100: fix bus clock calculation
Power: Reset: Generalize qnap-poweroff to work on Synology devices.
dts: socfpga: Update clock entry to support multiple parents
ARM: socfpga: Update socfpga_defconfig
dts: socfpga: Add DTS entry for adding the stmmac glue layer for stmmac.
net: stmmac: Add SOCFPGA glue driver
watchdog: orion_wdt: Use %pa to print 'phys_addr_t'
drivers: cci: Export CCI PMU revision
...
The Allwinner A10 and A31 compatibles were following a slightly different
compatible patterns than the rest of the SoCs for historical reasons. Change
the compatibles to match the other pattern in the watchdog controller driver
for consistency.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Using the added infrastructure for handling SoC differences,
this commit adds support for the watchdog controller available
in Armada 370 and Armada XP SoCs.
Also, and because the AXP clock initialization uses of_clk_get_by_name,
this commit changes the orion clock initialization to use clk_get() and
adds a proper clk_put() on the common exit/error paths.
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Wim Van Sebroeck <wim@iguana.be>
Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
In order to support other SoC, it's required to distinguish
the 'control' timer register, from the 'rstout' register
that enables system reset on watchdog expiration.
To prevent a compatibility break, this commit adds a fallback
to a hardcoded RSTOUT address.
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Wim Van Sebroeck <wim@iguana.be>
Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
DT-enabled plaforms, where the irqchip driver for the brigde interrupt
controller is available, can handle the watchdog IRQ properly. Therefore,
request the interrupt and add a dummy handler that merely calls panic().
This is done in order to have an initial 'ack' of the interruption,
which clears the watchdog state.
Furthermore, since some platforms don't have such IRQ, this commit
makes the interrupt specification optional.
Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Wim Van Sebroeck <wim@iguana.be>
Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Add new at91sam9 watchdog properties to the documentation.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Add device tree support for exynos5250 and 5420 SoCs and use syscon regmap interface
to configure AUTOMATIC_WDT_RESET_DISABLE and MASK_WDT_RESET_REQUEST registers of PMU
to mask/unmask enable/disable of watchdog in probe and s2r scenarios.
Signed-off-by: Leela Krishna Amudala <l.krishna@samsung.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This patch adds a watchdog driver for devices controlled through GPIO,
(Analog Devices ADM706, Maxim MAX823, National NE555 etc).
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
The keystone arch uses the same IP watchdog, so add "ti,keystone-wdt"
compatible and correct identity.
The Keystone arch is using clocks in DT and source clock for watchdog
has to be specified, so add this to binding.
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Since Davinci WDT has been switched to use WDT core, it became able
to support timeout-sec property, so add it to it's binding description.
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
On CSR SiRFprimaII and SiRFatlasVI, the 6th timer can act as a watchdog
timer when the Watchdog mode is enabled.
watchdog occur when TIMER watchdog counter matches the value software
pre-set, when this event occurs, the effect is the same as the system
software reset.
Signed-off-by: Xianglong Du <Xianglong.Du@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Cc: Romain Izard <romain.izard.pro@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
I accidently put the devicetree bindings for the MEN A21 watchdog driver in
Documentation/devicetree/bindings/gpio instead of
Documentation/devicetree/bindings/watchdog, this patch addresses this error.
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de>
Acked-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Rob Landley <rob@landley.net>
This patch adds a watchdog driver for the main hardware watchdog timer
found on MOXA ART SoCs.
The MOXA ART SoC provides one writable timer register, restarting
the hardware once it reaches zero. The register is auto decremented
every APB clock cycle.
Signed-off-by: Jonas Jensen <jonas.jensen@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
The Allwinner A31 has a different watchdog, with a slightly different
register layout, that requires a different restart code.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This adds a driver for watchdog timer hardware present on Broadcom BCM2835 SoC,
used in Raspberry Pi and Roku 2 devices.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: linux-rpi-kernel@lists.infradead.org
Cc: linux-watchdog@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
This adds support for probing the COH 901 327 watchdog from
the device tree and also adds associated bindings.
Acked-by: Wim Van Sebroeck <wim@iguana.be>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The Allwinner sun6i (A31) has a slightly different watchdog, that
doesn't allow to use the already existing restart code.
Rework a bit the restart code to allow to plug in more easily different
restart handlers depending on the device tree.
In the past, we were also meaning sunxi as a generic name covering all
Allwinner SoCs. This won't be true anymore with the A31 (sun6i) that
differs pretty much from sun4i and sun5i, and we will end up having
sunxi, for sun4i and sun5i, and sun6i, which is neither consistent nor
convenient. So, while we're at it, also change sunxi to sun4i.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
this patchset add the timeout-sec property to the following drivers:
orion_wdt, pnx4008_wdt, s3c2410_wdt and at91sam9_wdt.
The at91sam9_wdt is tested on evk-pr3,
the other drivers are compile tested only.
Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Cc: Masanari Iida <standby24x7@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Add DT support for twl4030_wdt. This is needed to get twl4030_wdt to
probe when booting with DT.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This adds OF support for davinci_wdt driver.
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Continued device tree conversion and enablement across a number of
platforms; Kirkwood, tegra, i.MX, Exynos, zynq and a couple of other
smaller series as well.
ux500 has seen continued conversion for platforms. Several platforms have
seen pinctrl-via-devicetree conversions for simpler multiplatform. Tegra
is adding data for new devices/drivers, and Exynos has a bunch of new
bindings and devices added as well.
So, pretty much the same progression in the right direction as the last
few releases.
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Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC device tree conversions and enablement from Olof Johansson:
"Continued device tree conversion and enablement across a number of
platforms; Kirkwood, tegra, i.MX, Exynos, zynq and a couple of other
smaller series as well.
ux500 has seen continued conversion for platforms. Several platforms
have seen pinctrl-via-devicetree conversions for simpler
multiplatform. Tegra is adding data for new devices/drivers, and
Exynos has a bunch of new bindings and devices added as well.
So, pretty much the same progression in the right direction as the
last few releases."
Fix up conflicts as per Olof.
* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (185 commits)
ARM: ux500: Rename dbx500 cpufreq code to be more generic
ARM: dts: add missing ux500 device trees
ARM: ux500: Stop registering the PCM driver from platform code
ARM: ux500: Move board specific GPIO info out to subordinate DTS files
ARM: ux500: Disable the MMCI gpio-regulator by default
ARM: Kirkwood: remove kirkwood_ehci_init() from new boards
ARM: Kirkwood: Add support LED of OpenBlocks A6
ARM: Kirkwood: Convert to EHCI via DT for OpenBlocks A6
ARM: kirkwood: Add NAND partiton map for OpenBlocks A6
ARM: kirkwood: Add support second I2C bus and RTC on OpenBlocks A6
ARM: kirkwood: Add support DT of second I2C bus
ARM: kirkwood: Convert mplcec4 board to pinctrl
ARM: Kirkwood: Convert km_kirkwood to pinctrl
ARM: Kirkwood: support 98DX412x kirkwoods with pinctrl
ARM: Kirkwood: Convert IX2-200 to pinctrl.
ARM: Kirkwood: Convert lsxl boards to pinctrl.
ARM: Kirkwood: Convert ib62x0 to pinctrl.
ARM: Kirkwood: Convert GoFlex Net to pinctrl.
ARM: Kirkwood: Convert dreamplug to pinctrl.
ARM: Kirkwood: Convert dockstar to pinctrl.
...
From Maxime Ripard:
Here is a pull request to add the support for Allwinner A10 SoCs.
* sunxi/soc2:
ARM: sunxi: Add sunxi restart function via onchip watchdog
ARM: sunxi: Add sun4i and cubieboard support
ARM: sunxi: Add earlyprintk support for UART0 (sun4i)
ARM: sunxi: Restructure sunxi dts/dtsi files
Signed-off-by: Olof Johansson <olof@lixom.net>
Tested on an at91sam9260 board (evk-pro3)
Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Implement the machine restart hook using the SoC's watchdog timer module.
To support this, define a DT binding for the watchdog module, and add it
to the device tree.
The downstream rpi-split branch contains a full watchdog timer driver
implementation, which also implements the restart hook. However, the
restart function is largely separate from the watchdog driver, so for
simplicity, the restart hook is implemented here directly in the main
machine source file.
Overall structure (separate setup/restart) functions derived from the
picoxcell ARM support.
Watchdog register IO sequence taken from code by Simon Arlott. Note that
the watchdog module is not documented in BCM2835-ARM-Peripherals.pdf.
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
This branch contains a set of device-tree conversions for Marvell Orion
platforms that were staged early but took a few tries to get the branch
into a format where it was suitable for us to pick up.
Given that most people working on these platforms are hobbyists with
limited time, we were a bit more flexible with merging it even though
it came in late.
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Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc Marvell Orion device-tree updates from Olof Johansson:
"This contains a set of device-tree conversions for Marvell Orion
platforms that were staged early but took a few tries to get the
branch into a format where it was suitable for us to pick up.
Given that most people working on these platforms are hobbyists with
limited time, we were a bit more flexible with merging it even though
it came in late."
* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (21 commits)
ARM: Kirkwood: Replace mrvl with marvell
ARM: Kirkwood: Describe GoFlex Net LEDs and SATA in DT.
ARM: Kirkwood: Describe Dreamplug LEDs in DT.
ARM: Kirkwood: Describe iConnects LEDs in DT.
ARM: Kirkwood: Describe iConnects temperature sensor in DT.
ARM: Kirkwood: Describe IB62x0 LEDs in DT.
ARM: Kirkwood: Describe IB62x0 gpio-keys in DT.
ARM: Kirkwood: Describe DNS32? gpio-keys in DT.
ARM: Kirkwood: Move common portions into a kirkwood-dnskw.dtsi
ARM: Kirkwood: Replace DNS-320/DNS-325 leds with dt bindings
ARM: Kirkwood: Describe DNS325 temperature sensor in DT.
ARM: Kirkwood: Use DT to configure SATA device.
ARM: kirkwood: use devicetree for SPI on dreamplug
ARM: kirkwood: Add LS-XHL and LS-CHLv2 support
ARM: Kirkwood: Initial DTS support for Kirkwood GoFlex Net
ARM: Kirkwood: Add basic device tree support for QNAP TS219.
ATA: sata_mv: Add device tree support
ARM: Orion: DTify the watchdog timer.
ARM: Orion: Add arch support needed for I2C via DT.
ARM: kirkwood: use devicetree for orion-spi
...
Conflicts:
drivers/watchdog/orion_wdt.c
Add device tree support to the Orion watchdog timer, and enable its
use in the kirkwood devices using device tree.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>
Tested-by: Simon Baatz <gmbnomis@gmail.com>
