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* watchdog: pic32-dmt: Add PIC32 deadman timer driverPurna Chandra Mandal2016-05-131-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | Adds support for the deadman timer peripheral found on PIC32 class devices. The primary function of the deadman timer (DMT) is to reset the processor in the event of a software malfunction. The DMT is a free-running instruction fetch timer, which is clocked whenever an instruction fetch occurs until a count match occurs. Instructions are not fetched when the processor is in sleep mode. Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-watchdog@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12703/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* watchdog: pic32-wdt: Add PIC32 watchdog driverJoshua Henderson2016-05-131-0/+13
| | | | | | | | | | | | | | | | | | | | | Add support for the watchdog peripheral found on PIC32 class devices. Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com> Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-watchdog@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12701/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds2016-03-201-3/+49
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull watchdog updates from Wim Van Sebroeck: - new drivers for: NI 903x/913x watchdog driver, WinSystems EBC-C384 watchdog timer and ARM SBSA watchdog driver - Support for NCT6102D devices - Improvements of the generic watchdog framework (improve restart handler, make set_timeout optional, introduce infrastructure triggered keepalives, ... - improvements on the pnx4008 watchdog driver - several smaller fixes and improvements * git://www.linux-watchdog.org/linux-watchdog: (28 commits) watchdog: Ensure that wdd is not dereferenced if NULL watchdog: imx2: Convert to use infrastructure triggered keepalives watchdog: dw_wdt: Convert to use watchdog infrastructure watchdog: Add support for minimum time between heartbeats watchdog: Make stop function optional watchdog: Introduce WDOG_HW_RUNNING flag watchdog: Introduce hardware maximum heartbeat in watchdog core watchdog: Make set_timeout function optional arm: lpc32xx: remove restart handler arm: lpc32xx: phy3250 remove restart hook watchdog: pnx4008: restart: support "cmd" from userspace watchdog: pnx4008: add support for soft reset watchdog: pnx4008: add restart handler watchdog: pnx4008: update logging during power-on watchdog: tangox_wdt: test clock rate to avoid division by 0 watchdog: atlas7_wdt: test clock rate to avoid division by 0 watchdog: s3c2410_wdt: Add max and min timeout values Watchdog: introduce ARM SBSA watchdog driver Documentation: add sbsa-gwdt driver documentation watchdog: Add watchdog timer support for the WinSystems EBC-C384 ...
| * watchdog: dw_wdt: Convert to use watchdog infrastructureGuenter Roeck2016-03-161-0/+1
| | | | | | | | | | | | | | | | | | | | Convert driver to use watchdog infrastructure. This includes infrastructure support to handle watchdog keepalive if the watchdog is running while the watchdog device is closed. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * Watchdog: introduce ARM SBSA watchdog driverFu Wei2016-03-161-0/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to Server Base System Architecture (SBSA) specification, the SBSA Generic Watchdog has two stage timeouts: the first signal (WS0) is for alerting the system by interrupt, the second one (WS1) is a real hardware reset. More details about the hardware specification of this device: ARM DEN0029B - Server Base System Architecture (SBSA) This driver can operate ARM SBSA Generic Watchdog as a single stage watchdog or a two stages watchdog, it's set up by the module parameter "action". In the single stage mode, when the timeout is reached, your system will be reset by WS1. The first signal (WS0) is ignored. In the two stages mode, when the timeout is reached, the first signal (WS0) will trigger panic. If the system is getting into trouble and cannot be reset by panic or restart properly by the kdump kernel(if supported), then the second stage (as long as the first stage) will be reached, system will be reset by WS1. This function can help administrator to backup the system context info by panic console output or kdump. This driver bases on linux kernel watchdog framework, so it can get timeout from module parameter and FDT at the driver init stage. Signed-off-by: Fu Wei <fu.wei@linaro.org> Reviewed-by: Graeme Gregory <graeme.gregory@linaro.org> Tested-by: Pratyush Anand <panand@redhat.com> Acked-by: Timur Tabi <timur@codeaurora.org> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Tested-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * watchdog: Add watchdog timer support for the WinSystems EBC-C384William Breathitt Gray2016-03-011-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The WinSystems EBC-C384 has an onboard watchdog timer. The timeout range supported by the watchdog timer is 1 second to 255 minutes. Timeouts under 256 seconds have a 1 second granularity, while the rest have a 1 minute granularity. This driver adds watchdog timer support for this onboard watchdog timer. The timeout may be configured via the timeout module parameter. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * watchdog: ni903x_wdt: Add NI 903x/913x watchdog driverKyle Roeschley2016-03-011-0/+11
| | | | | | | | | | | | | | | | | | | | Add support for the watchdog timer on NI cRIO-903x and cDAQ-913x real- time controllers. Signed-off-by: Jeff Westfahl <jeff.westfahl@ni.com> Signed-off-by: Kyle Roeschley <kyle.roeschley@ni.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * watchdog: Add hardware dependency to BCM7038 driverJean Delvare2016-03-011-3/+5
| | | | | | | | | | | | | | | | | | | | | | The BCM7038 watchdog driver is specific to Broadcom ARM and MIPS SoCs so do not present it on other architectures, unless build-testing. Signed-off-by: Jean Delvare <jdelvare@suse.de> Reviewed-by: Justin Chen <justinpopo6@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * watchdog: orion: Depend on 32-bit ARMThierry Reding2016-03-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | The driver uses the atomic_io_modify() function to update registers, but that function is only available on 32-bit ARM. Recent changes have added ARCH_MVEBU support to 64-bit ARM and hence allowed this driver to build on 64-bit ARM where this function isn't available and thereby causing allmodconfig builds to break. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * watchdog: ts4800: add hardware dependencyJean Delvare2016-03-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | The Technologic Systems TS-4800 is an i.MX515 board, so its drivers are useless unless building a SOC_IMX51 kernel, except for build testing purposes. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Damien Riegel <damien.riegel@savoirfairelinux.com> Cc: Rob Herring <robh@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * watchdog: w83627hf: Added NCT6102D support.Rob Kramer2016-03-011-0/+1
| | | | | | | | | | | | | | | | | | As used in (and tested on) the ASRock IMB-150 board. Implementation is identical to other NCT chips, just with different registers. Signed-off-by: Rob Kramer <rob@solution-space.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* | Merge tag 'lkdtm-next' of ↵Greg Kroah-Hartman2016-03-021-0/+11
|\ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux into char-misc-testing Kees writes: Become maintainer, add hardening tests for use-after-free and atomic wrapping.
| * \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds2016-03-011-0/+11
| |\ \ | | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull sparc fixes from David Miller: 1) System call tracing doesn't handle register contents properly across the trace. From Mike Frysinger. 2) Hook up copy_file_range 3) Build fix for 32-bit with newer tools. 4) New sun4v watchdog driver, from Wim Coekaerts. 5) Set context system call has to allow for servicable faults when we flush the register windows to memory * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc64: Fix sparc64_set_context stack handling. sparc32: Add -Wa,-Av8 to KBUILD_CFLAGS. Add sun4v_wdt watchdog driver sparc: Fix system call tracing register handling. sparc: Hook up copy_file_range syscall.
| | * Add sun4v_wdt watchdog driverwim.coekaerts@oracle.com2016-01-311-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver adds sparc hypervisor watchdog support. The default timeout is 60 seconds and the range is between 1 and 31536000 seconds. Both watchdog-resolution and watchdog-max-timeout MD properties settings are supported. Signed-off-by: Wim Coekaerts <wim.coekaerts@oracle.com> Reviewed-by: Julian Calaby <julian.calaby@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge 4.5-rc4 into char-misc-nextGreg Kroah-Hartman2016-02-141-1/+5
|\| | | | | | | | | | | | | | | | | We want those fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | watchdog: Fix dependencies for !HAS_IOMEM archsRichard Weinberger2016-01-311-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | Not every arch has io memory. So, unbreak the build by fixing the dependencies. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | watchdog: imgdpc: select WATCHDOG_COREArnd Bergmann2016-01-311-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The imgpdc_wdt driver can be built on all architectures with CONFIG_COMPILE_TEST, but fails if no other watchdog driver is enabled: drivers/watchdog/built-in.o: In function `pdc_wdt_remove': imgpdc_wdt.c:(.text+0x74): undefined reference to `watchdog_unregister_device' This adds the normal 'select WATCHDOG_CORE' that is needed to ensure the driver always builds cleanly. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | watchdog: tango: rename ARCH_TANGOX to ARCH_TANGOMarc Gonzalez2016-01-311-1/+1
| |/ | | | | | | | | | | | | | | | | | | This change was requested by arm-soc maintainer Kevin Hilman because the X in TANGOX is a wildcard. Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Acked-by: Mans Rullgard <mans@mansr.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* / watchdog: mei_wdt: implement MEI iAMT watchdog driverTomas Winkler2016-02-071-0/+15
|/ | | | | | | | | Create a driver with the generic watchdog interface for the MEI iAMT watchdog device. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* watchdog: add MT7621 watchdog supportJohn Crispin2016-01-091-0/+7
| | | | | | | | | | This patch adds support for the watchdog core found on newer MediaTek Wifi SoCs MT7621 and MT7628. There is no symbol for MT7628 as it is a subtype of MT7620 so we depend on that instead. Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: add support for Sigma Designs SMP86xx/SMP87xxMans Rullgard2015-12-281-0/+10
| | | | | | | | | This adds support for the Sigma Designs SMP86xx/SMP87xx family built-in watchdog. Signed-off-by: Mans Rullgard <mans@mansr.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: Zodiac Aerospace RAVE Switch Watchdog Processor DriverMartyn Welch2015-12-281-0/+11
| | | | | | | | | This patch adds a driver for the Zodiac Aerospace RAVE Watchdog Procesor. This device implements a watchdog timer, accessible over I2C. Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: add Alphascale asm9260-wdt driverOleksij Rempel2015-12-281-0/+10
| | | | | | | | | | | | Add WD support for Alphascale asm9260 SoC. This driver provide support for different function modes: - HW mode to trigger SoC reset on timeout - SW mode do soft reset if needed - DEBUG mode Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: ts4800: add driver for TS-4800 watchdogDamien Riegel2015-12-281-0/+10
| | | | | | | | | | | | | | | | This watchdog is instantiated in a FPGA that is memory mapped. It is made of only one register, called the feed register. Writing to this register will re-arm the watchdog for a given time (and enable it if it was disable). It can be disabled by writing a special value into it. It is part of a syscon block, and the watchdog register offset in this block varies from board to board. This offset is passed in the syscon property after the phandle to the syscon node. Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: atlas7: add watchdog driver of CSRatlas7Guo Zeng2015-12-281-0/+10
| | | | | | | | | | | | This patch adds watchdog driver for CSRatlas7 platform. On CSRatlas7, the 6th timer can act as a watchdog timer when the Watchdog mode is enabled. Signed-off-by: Guo Zeng <Guo.Zeng@csr.com> Signed-off-by: William Wang <William.Wang@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: Read device status through sysfs attributesPratyush Anand2015-12-271-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds following attributes to watchdog device's sysfs interface to read its different status. * state - reads whether device is active or not * identity - reads Watchdog device's identity string. * timeout - reads current timeout. * timeleft - reads timeleft before watchdog generates a reset * bootstatus - reads status of the watchdog device at boot * status - reads watchdog device's internal status bits * nowayout - reads whether nowayout feature was set or not Testing with iTCO_wdt: # cd /sys/class/watchdog/watchdog1/ # ls bootstatus dev device identity nowayout power state subsystem timeleft timeout uevent # cat identity iTCO_wdt # cat timeout 30 # cat state inactive # echo > /dev/watchdog1 # cat timeleft 26 # cat state active # cat bootstatus 0 # cat nowayout 0 Signed-off-by: Pratyush Anand <panand@redhat.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: Add support for Freescale Layerscape platformsShaohui Xie2015-11-231-1/+1
| | | | | | | | | Modify watchdog/Kconfig file to support Layerscape platforms. Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com> Signed-off-by: Hou Zhiqiang <B48286@freescale.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: Watchdog driver for Broadcom Set-Top BoxJustin Chen2015-10-271-0/+8
| | | | | | | | Watchdog driver for Broadcom 7038 and newer chips. Signed-off-by: Justin Chen <justinpopo6@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: iTCO: Fix dependencies on I2CGuenter Roeck2015-09-281-1/+2
| | | | | | | | | | | | | | | | | If I2C is built as module, the iTCO watchdog driver must be built as module as well. I2C_I801 must only be selected if I2C is configured. This fixes the following build errors, seen if I2C=m and ITCO_WDT=y. i2c-i801.c:(.text+0x2bf055): undefined reference to `i2c_del_adapter' i2c-i801.c:(.text+0x2c13e0): undefined reference to `i2c_add_adapter' i2c-i801.c:(.text+0x2c17bd): undefined reference to `i2c_new_device' Fixes: 2a7a0e9bf7b3 ("watchdog: iTCO_wdt: Add support for TCO on Intel Sunrisepoint") Reviewed-by: Matt Fleming <matt.fleming@intel.com> Cc: Lee Jones <lee.jones@linaro.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds2015-09-121-1/+21
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull watchdog updates from Wim Van Sebroeck: - new driver for NXP LPC18xx Watchdog Timer - new driver for SAMA5D4 watchdog timer - add support for MCP79 to nv_tco driver - clean-up and improvement of the mpc8xxx watchdog driver - improvements to gpio-wdt - at91sam9_wdt clock improvements ... and other small fixes and improvements * git://www.linux-watchdog.org/linux-watchdog: (25 commits) Watchdog: Fix parent of watchdog_devices watchdog: at91rm9200: Correct check for syscon_node_to_regmap() errors watchdog: at91sam9: get and use slow clock Documentation: dt: binding: atmel-sama5d4-wdt: for SAMA5D4 watchdog driver watchdog: add a driver to support SAMA5D4 watchdog timer watchdog: mpc8xxx: allow to compile for MPC512x watchdog: mpc8xxx: use better error code when watchdog cannot be enabled watchdog: mpc8xxx: use dynamic memory for device specific data watchdog: mpc8xxx: use devm_ioremap_resource to map memory watchdog: mpc8xxx: make use of of_device_get_match_data watchdog: mpc8xxx: simplify registration watchdog: mpc8xxx: remove dead code watchdog: lpc18xx_wdt_get_timeleft() can be static DT: watchdog: Add NXP LPC18xx Watchdog Timer binding documentation watchdog: NXP LPC18xx Watchdog Timer Driver watchdog: gpio-wdt: ping already at startup for always running devices watchdog: gpio-wdt: be more strict about hw_algo matching Documentation: watchdog: at91sam9_wdt: add clocks property watchdog: booke_wdt: Use infrastructure to check timeout limits watchdog: (nv_tco) add support for MCP79 ...
| * watchdog: add a driver to support SAMA5D4 watchdog timerWenyou Yang2015-09-091-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From SAMA5D4, the watchdog timer is upgrated with a new feature, which is describled as in the datasheet, "WDT_MR can be written until a LOCKMR command is issued in WDT_CR". That is to say, as long as the bootstrap and u-boot don't issue a LOCKMR command, WDT_MR can be written more than once in the driver. So the SAMA5D4 watchdog driver's implementation is different from the at91sam9260 watchdog driver implemented in file at91sam9_wdt.c. The user application open the device file to enable the watchdog timer hardware, and close to disable it, and set the watchdog timer timeout by seting WDV and WDD fields of WDT_MR register, and ping the watchdog by issuing WDRSTT command to WDT_CR register with hard-coded key. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * watchdog: mpc8xxx: allow to compile for MPC512xUwe Kleine-König2015-09-091-1/+1
| | | | | | | | | | | | | | | | | | | | The MPC5125 processor features a watchdog device that is identical to the MPC8610 one. So allow to enable the driver for MPC512x kernel configurations. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * watchdog: NXP LPC18xx Watchdog Timer DriverAriel D'Alessandro2015-09-091-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit adds support for the watchdog timer found in NXP LPC SoCs family, which includes LPC18xx/LPC43xx. Other SoCs in that family may share the same watchdog hardware. Watchdog driver registers a restart handler that will restart the system by performing an incorrect feed after ensuring the watchdog is enabled in reset mode. As watchdog cannot be disabled in hardware, driver's stop routine will regularly send a keepalive ping using a timer. Signed-off-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* | watchdog: iTCO_wdt: Add support for TCO on Intel SunrisepointMatt Fleming2015-08-111-1/+2
|/ | | | | | | | | | | | | The revision of the watchdog hardware in Sunrisepoint necessitates a new "version" inside the TCO watchdog driver because some of the register layouts have changed. Also update the Kconfig entry to select both the LPC and SMBus drivers since the TCO device is on the SMBus in Sunrisepoint. Signed-off-by: Matt Fleming <matt.fleming@intel.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* watchdog: gpio_wdt: Add option for early registrationJean-Baptiste Theou2015-06-291-0/+12
| | | | | | | | | | | | | | | In some situation, mainly when it's not possible to disable a watchdog, you may want the watchdog driver to be started as soon as possible. Adding GPIO_WATCHDOG_ARCH_INITCALL to raise initcall from module_init to arch_initcall. This patch require watchdog registration deferral mechanism Signed-off-by: Jean-Baptiste Theou <jtheou@adeneo-embedded.us> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: da9062: DA9062 watchdog driverS Twiss2015-06-221-0/+9
| | | | | | | | Add watchdog driver support for DA9062 Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: Allow compile test of GPIO consumers if !GPIOLIBGeert Uytterhoeven2015-06-221-1/+1
| | | | | | | | | | | | | | The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer functionality only, can still be compiled if GPIOLIB is not enabled. Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where appropriate. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: linux-watchdog@vger.kernel.org
* watchdog: cadence: Add dependency on HAS_IOMEMRichard Weinberger2015-06-221-0/+1
| | | | | | | | | | | | Not all architectures have io memory. Fixes: drivers/built-in.o: In function `cdns_wdt_probe': cadence_wdt.c:(.text+0x33b7c9): undefined reference to `devm_ioremap_resource' Signed-off-by: Richard Weinberger <richard@nod.at> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: MAX63XX_WATCHDOG does not depend on ARMVivien Didelot2015-06-221-1/+1
| | | | | | | | | Remove the ARM Kconfig dependency since the Maxim MAX63xx devices are architecture independent. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: digicolor: driver for Conexant Digicolor CX92755 SoCBaruch Siach2015-06-221-0/+10
| | | | | | | | | | | | | | | | | This commit add a driver for the watchdog functionality of the Conexant CX92755 SoC, from the Digicolor series of SoCs. Of 8 system timers provided by the CX92755, the first one, timer A, can reset the chip when its counter reaches zero. This driver uses this capability to provide userspace with a standard watchdog, using the watchdog timer driver core framework. This driver also implements a reboot handler for the reboot(2) system call. The watchdog driver shares the timer registers with the CX92755 timer driver (drivers/clocksource/timer-digicolor.c). The timer driver, however, uses only timers other than A, so both drivers should coexist. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: st_wdt: Add new driver for ST's LPC WatchdogLee Jones2015-06-221-0/+12
| | | | | | | Signed-off-by: David Paris <david.paris@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds2015-04-221-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull watchdog updates from Wim Van Sebroeck: "This contains following changes: - Octeon: convert to watchdog-API and apply some fixes - Cadence wdt: remove dependency on ARCH - add DT bindings for qcom + msm - bcm281xx: Remove use of seq_printf return value - stmp3xxx_rtc_wdt + pnx4008_wdt: fix broken email addresses" * git://www.linux-watchdog.org/linux-watchdog: watchdog: stmp3xxx_rtc_wdt: fix broken email address watchdog: pnx4008_wdt: fix broken email address watchdog: octeon: use fixed length string for register names watchdog: octeon: fix some trivial coding style issues watchdog: octeon: convert to WATCHDOG_CORE API watchdog: cadence: Remove Kconfig dependency on ARCH ARM: msm: add watchdog entries to DT timer binding doc ARM: qcom: add description of KPSS WDT for IPQ8064 watchdog: qcom: use timer devicetree binding watchdog: bcm281xx: Remove use of seq_printf return value
| * watchdog: octeon: convert to WATCHDOG_CORE APIAaro Koskinen2015-04-221-0/+1
| | | | | | | | | | | | | | | | | | Convert OCTEON watchdog to WATCHDOG_CORE API. This enables support for multiple watchdogs on OCTEON boards. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * watchdog: cadence: Remove Kconfig dependency on ARCHMichal Simek2015-04-221-1/+0
| | | | | | | | | | | | | | | | | | Remove Kconfig dependency and enable driver for all ARCHs. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* | watchdog: at91rm9200: use the system timer sysconAlexandre Belloni2015-03-161-1/+1
|/ | | | | | | | | | | Use a syscon regmap to access the system timer registers. Also, rename the driver atmel_st_watchdog to stop conflicting with at91sam9_wdt.c Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* watchdog: bcm47xx_wdt.c: allow enabling on BCM5301X archRafał Miłecki2015-02-171-1/+1
| | | | | | | | | BCM5301X (ARCH_BCM_5301X) is a new Broadcom architecture using the same SoC bus driver (bcma) as BCM47XX but based on ARM instead of MIPS. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: w83627hf_wdt: Add support for NCT6791 and NCT6792Guenter Roeck2015-02-171-0/+2
| | | | | | | The watchdog functionality in both chips is almost identical to NCT6779. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: Add driver for Mediatek watchdogMatthias Brugger2015-02-171-0/+10
| | | | | | | | | | | This patch adds a driver for the Mediatek SoC integrated watchdog. This driver supports watchdog and software reset for mt65xx and mt81xx SoCs. Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com> Tested-by: Eddie Huang <eddie.huang@mediatek.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: ImgTec PDC Watchdog Timer DriverNaidu Tellapati2015-02-171-0/+11
| | | | | | | | | | | | This commit adds support for ImgTec PowerDown Controller Watchdog Timer. Reviewed-by: Andrew Bresticker <abrestic@chromium.org> Signed-off-by: Naidu Tellapati <Naidu.Tellapati@imgtec.com> Signed-off-by: Jude Abraham <Jude.Abraham@imgtec.com> [ezequiel: Minor style fixes] Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* ARM: at91/Kconfig: remove ARCH_AT91RM9200 option for driversNicolas Ferre2014-11-261-2/+2
| | | | | | | The precise selection is useless, so we simply remove these dependencies. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
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