1 # SPDX-License-Identifier: GPL-2.0-only
4 # Watchdog device configuration
8 bool "Watchdog Timer Support"
10 If you say Y here (and to one of the following options) and create a
11 character special file /dev/watchdog with major number 10 and minor
12 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
13 subsequently opening the file and then failing to write to it for
14 longer than 1 minute will result in rebooting the machine. This
15 could be useful for a networked machine that needs to come back
16 on-line as fast as possible after a lock-up. There's both a watchdog
17 implementation entirely in software (which can sometimes fail to
18 reboot the machine) and a driver for hardware watchdog boards, which
19 are more robust and can also keep track of the temperature inside
20 your computer. For details, read
21 <file:Documentation/watchdog/watchdog-api.rst> in the kernel source.
23 The watchdog is usually used together with the watchdog daemon
24 which is available from
25 <https://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon
26 can also monitor NFS connections and can reboot the machine when the
27 process table is full.
34 tristate "WatchDog Timer Driver Core"
36 Say Y here if you want to use the new watchdog timer driver core.
37 This driver provides a framework for all watchdog timer drivers
38 and gives them the /dev/watchdog interface (and later also the
41 config WATCHDOG_NOWAYOUT
42 bool "Disable watchdog shutdown on close"
44 The default watchdog behaviour (which you get if you say N here) is
45 to stop the timer if the process managing it closes the file
46 /dev/watchdog. It's always remotely possible that this process might
47 get killed. If you say Y here, the watchdog cannot be stopped once
50 config WATCHDOG_HANDLE_BOOT_ENABLED
51 bool "Update boot-enabled watchdog until userspace takes over"
54 The default watchdog behaviour (which you get if you say Y here) is
55 to ping watchdog devices that were enabled before the driver has
56 been loaded until control is taken over from userspace using the
57 /dev/watchdog file. If you say N here, the kernel will not update
58 the watchdog on its own. Thus if your userspace does not start fast
59 enough your device will reboot.
61 config WATCHDOG_OPEN_TIMEOUT
62 int "Timeout value for opening watchdog device"
65 The maximum time, in seconds, for which the watchdog framework takes
66 care of pinging a hardware watchdog. A value of 0 means infinite. The
67 value set here can be overridden by the commandline parameter
68 "watchdog.open_timeout".
71 bool "Read different watchdog information through sysfs"
73 Say Y here if you want to enable watchdog device status read through
76 config WATCHDOG_HRTIMER_PRETIMEOUT
77 bool "Enable watchdog hrtimer-based pretimeouts"
79 Enable this if you want to use a hrtimer timer based pretimeout for
80 watchdogs that do not natively support pretimeout support. Be aware
81 that because this pretimeout functionality uses hrtimers, it may not
82 be able to fire before the actual watchdog fires in some situations.
84 comment "Watchdog Pretimeout Governors"
86 config WATCHDOG_PRETIMEOUT_GOV
87 bool "Enable watchdog pretimeout governors"
88 depends on WATCHDOG_CORE
90 The option allows to select watchdog pretimeout governors.
92 config WATCHDOG_PRETIMEOUT_GOV_SEL
94 depends on WATCHDOG_PRETIMEOUT_GOV
96 select WATCHDOG_PRETIMEOUT_GOV_PANIC if WATCHDOG_PRETIMEOUT_GOV_NOOP=n
98 if WATCHDOG_PRETIMEOUT_GOV
100 config WATCHDOG_PRETIMEOUT_GOV_NOOP
101 tristate "Noop watchdog pretimeout governor"
102 depends on WATCHDOG_CORE
103 default WATCHDOG_CORE
105 Noop watchdog pretimeout governor, only an informational
106 message is added to kernel log buffer.
108 config WATCHDOG_PRETIMEOUT_GOV_PANIC
109 tristate "Panic watchdog pretimeout governor"
110 depends on WATCHDOG_CORE
111 default WATCHDOG_CORE
113 Panic watchdog pretimeout governor, on watchdog pretimeout
114 event put the kernel into panic.
117 prompt "Default Watchdog Pretimeout Governor"
118 default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
120 This option selects a default watchdog pretimeout governor.
121 The governor takes its action, if a watchdog is capable
122 to report a pretimeout event.
124 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP
126 depends on WATCHDOG_PRETIMEOUT_GOV_NOOP
128 Use noop watchdog pretimeout governor by default. If noop
129 governor is selected by a user, write a short message to
130 the kernel log buffer and don't do any system changes.
132 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
134 depends on WATCHDOG_PRETIMEOUT_GOV_PANIC
136 Use panic watchdog pretimeout governor by default, if
137 a watchdog pretimeout event happens, consider that
138 a watchdog feeder is dead and reboot is unavoidable.
142 endif # WATCHDOG_PRETIMEOUT_GOV
145 # General Watchdog drivers
148 comment "Watchdog Device Drivers"
150 # Architecture Independent
153 tristate "Software watchdog"
156 A software monitoring watchdog. This will fail to reboot your system
157 from some situations that the hardware watchdog will recover
158 from. Equally it's a lot cheaper to install.
160 To compile this driver as a module, choose M here: the
161 module will be called softdog.
163 config SOFT_WATCHDOG_PRETIMEOUT
164 bool "Software watchdog pretimeout governor support"
165 depends on SOFT_WATCHDOG && WATCHDOG_PRETIMEOUT_GOV
167 Enable this if you want to use pretimeout governors with the software
168 watchdog. Be aware that governors might affect the watchdog because it
169 is purely software, e.g. the panic governor will stall it!
171 config BD957XMUF_WATCHDOG
172 tristate "ROHM BD9576MUF and BD9573MUF PMIC Watchdog"
173 depends on MFD_ROHM_BD957XMUF
176 Support for the watchdog in the ROHM BD9576 and BD9573 PMICs.
177 These PMIC ICs contain watchdog block which can be configured
178 to toggle reset line if SoC fails to ping watchdog via GPIO.
180 Say Y here to include support for the ROHM BD9576 or BD9573
181 watchdog. Alternatively say M to compile the driver as a module,
182 which will be called bd9576_wdt.
184 config DA9052_WATCHDOG
185 tristate "Dialog DA9052 Watchdog"
186 depends on PMIC_DA9052 || COMPILE_TEST
189 Support for the watchdog in the DA9052 PMIC. Watchdog trigger
192 Say Y here to include support for the DA9052 watchdog.
193 Alternatively say M to compile the driver as a module,
194 which will be called da9052_wdt.
196 config DA9055_WATCHDOG
197 tristate "Dialog Semiconductor DA9055 Watchdog"
198 depends on MFD_DA9055 || COMPILE_TEST
201 If you say yes here you get support for watchdog on the Dialog
202 Semiconductor DA9055 PMIC.
204 This driver can also be built as a module. If so, the module
205 will be called da9055_wdt.
207 config DA9063_WATCHDOG
208 tristate "Dialog DA9063 Watchdog"
209 depends on MFD_DA9063 || COMPILE_TEST
213 Support for the watchdog in the DA9063 PMIC.
215 This driver can be built as a module. The module name is da9063_wdt.
217 config DA9062_WATCHDOG
218 tristate "Dialog DA9062/61 Watchdog"
219 depends on MFD_DA9062 || COMPILE_TEST
223 Support for the watchdog in the DA9062 and DA9061 PMICs.
225 This driver can be built as a module. The module name is da9062_wdt.
228 tristate "Watchdog device controlled through GPIO-line"
232 If you say yes here you get support for watchdog device
233 controlled through GPIO-line.
235 config GPIO_WATCHDOG_ARCH_INITCALL
236 bool "Register the watchdog as early as possible"
237 depends on GPIO_WATCHDOG=y
239 In some situations, the default initcall level (module_init)
240 in not early enough in the boot process to avoid the watchdog
242 If you say yes here, the initcall level would be raised to
246 config MENF21BMC_WATCHDOG
247 tristate "MEN 14F021P00 BMC Watchdog"
248 depends on MFD_MENF21BMC || COMPILE_TEST
252 Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
254 This driver can also be built as a module. If so the module
255 will be called menf21bmc_wdt.
257 config MENZ069_WATCHDOG
258 tristate "MEN 16Z069 Watchdog"
262 Say Y here to include support for the MEN 16Z069 Watchdog.
264 This driver can also be built as a module. If so the module
265 will be called menz069_wdt.
268 tristate "ACPI Watchdog Action Table (WDAT)"
273 This driver adds support for systems with ACPI Watchdog Action
274 Table (WDAT) table. Servers typically have this but it can be
275 found on some desktop machines as well. This driver will take
276 over the native iTCO watchdog driver found on many Intel CPUs.
278 To compile this driver as module, choose M here: the module will
281 config WM831X_WATCHDOG
282 tristate "WM831x watchdog"
283 depends on MFD_WM831X
286 Support for the watchdog in the WM831x AudioPlus PMICs. When
287 the watchdog triggers the system will be reset.
289 config WM8350_WATCHDOG
290 tristate "WM8350 watchdog"
291 depends on MFD_WM8350
294 Support for the watchdog in the WM8350 AudioPlus PMIC. When
295 the watchdog triggers the system will be reset.
297 config XILINX_WATCHDOG
298 tristate "Xilinx Watchdog timer"
302 Watchdog driver for the xps_timebase_wdt IP core.
304 To compile this driver as a module, choose M here: the
305 module will be called of_xilinx_wdt.
307 config XILINX_WINDOW_WATCHDOG
308 tristate "Xilinx window watchdog timer"
313 Window watchdog driver for the versal_wwdt IP core.
314 Window watchdog timer(WWDT) contains closed(first) and
315 open(second) window with 32 bit width. Write to the watchdog
316 timer within predefined window periods of time. This means
317 a period that is not too soon and a period that is not too
318 late. The WWDT has to be restarted within the open window time.
319 If software tries to restart WWDT outside of the open window
320 time period, it generates a reset.
322 To compile this driver as a module, choose M here: the
323 module will be called xilinx_wwdt.
325 config ZIIRAVE_WATCHDOG
326 tristate "Zodiac RAVE Watchdog Timer"
330 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
333 To compile this driver as a module, choose M here: the
334 module will be called ziirave_wdt.
336 config RAVE_SP_WATCHDOG
337 tristate "RAVE SP Watchdog timer"
338 depends on RAVE_SP_CORE
339 depends on NVMEM || !NVMEM
342 Support for the watchdog on RAVE SP device.
345 tristate "Mellanox Watchdog"
346 depends on MELLANOX_PLATFORM
350 This is the driver for the hardware watchdog on Mellanox systems.
351 If you are going to use it, say Y here, otherwise N.
352 This driver can be used together with the watchdog daemon.
353 It can also watch your kernel to make sure it doesn't freeze,
354 and if it does, it reboots your system after a certain amount of
357 To compile this driver as a module, choose M here: the
358 module will be called mlx-wdt.
360 config SL28CPLD_WATCHDOG
361 tristate "Kontron sl28cpld Watchdog"
362 depends on MFD_SL28CPLD || COMPILE_TEST
365 Say Y here to include support for the watchdog timer
366 on the Kontron sl28 CPLD.
368 To compile this driver as a module, choose M here: the
369 module will be called sl28cpld_wdt.
375 config ARM_SP805_WATCHDOG
376 tristate "ARM SP805 Watchdog"
377 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
380 ARM Primecell SP805 Watchdog timer. This will reboot your system when
381 the timeout is reached.
383 config ARM_SBSA_WATCHDOG
384 tristate "ARM SBSA Generic Watchdog"
386 depends on ARM_ARCH_TIMER
389 ARM SBSA Generic Watchdog has two stage timeouts:
390 the first signal (WS0) is for alerting the system by interrupt,
391 the second one (WS1) is a real hardware reset.
392 More details: ARM DEN0029B - Server Base System Architecture (SBSA)
394 This driver can operate ARM SBSA Generic Watchdog as a single stage
395 or a two stages watchdog, it depends on the module parameter "action".
397 Note: the maximum timeout in the two stages mode is half of that in
398 the single stage mode.
400 To compile this driver as module, choose M here: The module
401 will be called sbsa_gwdt.
403 config ARMADA_37XX_WATCHDOG
404 tristate "Armada 37xx watchdog"
405 depends on ARCH_MVEBU || COMPILE_TEST
410 Say Y here to include support for the watchdog timer found on
411 Marvell Armada 37xx SoCs.
412 To compile this driver as a module, choose M here: the
413 module will be called armada_37xx_wdt.
415 config ASM9260_WATCHDOG
416 tristate "Alphascale ASM9260 watchdog"
417 depends on MACH_ASM9260 || COMPILE_TEST
420 select RESET_CONTROLLER
422 Watchdog timer embedded into Alphascale asm9260 chips. This will
423 reboot your system when the timeout is reached.
425 config AT91RM9200_WATCHDOG
426 tristate "AT91RM9200 watchdog"
427 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
429 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
430 system when the timeout is reached.
432 config AT91SAM9X_WATCHDOG
433 tristate "AT91SAM9X / AT91CAP9 watchdog"
434 depends on ARCH_AT91 || COMPILE_TEST
437 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
438 reboot your system when the timeout is reached.
440 config SAMA5D4_WATCHDOG
441 tristate "Atmel SAMA5D4 Watchdog Timer"
442 depends on ARCH_AT91 || COMPILE_TEST
445 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
446 Its Watchdog Timer Mode Register can be written more than once.
447 This will reboot your system when the timeout is reached.
449 config CADENCE_WATCHDOG
450 tristate "Cadence Watchdog Timer"
454 Say Y here if you want to include support for the watchdog
455 timer in the Xilinx Zynq.
457 config 21285_WATCHDOG
458 tristate "DC21285 watchdog"
459 depends on FOOTBRIDGE
461 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
462 here if you wish to use this. Alternatively say M to compile the
463 driver as a module, which will be called wdt285.
465 This driver does not work on all machines. In particular, early CATS
466 boards have hardware problems that will cause the machine to simply
467 lock up if the watchdog fires.
469 "If in doubt, leave it out" - say N.
472 tristate "NetWinder WB83C977 watchdog"
473 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
475 Say Y here to include support for the WB977 watchdog included in
476 NetWinder machines. Alternatively say M to compile the driver as
477 a module, which will be called wdt977.
479 Not sure? It's safe to say N.
481 config FTWDT010_WATCHDOG
482 tristate "Faraday Technology FTWDT010 watchdog"
483 depends on ARM || COMPILE_TEST
487 Say Y here if to include support for the Faraday Technology
488 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
491 To compile this driver as a module, choose M here: the
492 module will be called ftwdt010_wdt.
494 config IXP4XX_WATCHDOG
495 tristate "IXP4xx Watchdog"
496 depends on ARCH_IXP4XX
499 Say Y here if to include support for the watchdog timer
500 in the Intel IXP4xx network processors. This driver can
501 be built as a module by choosing M. The module will
502 be called ixp4xx_wdt.
504 Note: The internal IXP4xx watchdog does a soft CPU reset
505 which doesn't reset any peripherals. There are circumstances
506 where the watchdog will fail to reset the board correctly
507 (e.g., if the boot ROM is in an unreadable state).
509 Say N if you are unsure.
511 config S3C2410_WATCHDOG
512 tristate "S3C6410/S5Pv210/Exynos Watchdog"
513 depends on ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
515 select MFD_SYSCON if ARCH_EXYNOS
517 Watchdog timer block in the Samsung S3C64xx, S5Pv210 and Exynos
518 SoCs. This will reboot the system when the timer expires with
519 the watchdog enabled.
521 The driver is limited by the speed of the system's PCLK
522 signal, so with reasonably fast systems (PCLK around 50-66MHz)
523 then watchdog intervals of over approximately 20seconds are
526 Choose Y/M here only if you build for such Samsung SoC.
527 The driver can be built as a module by choosing M, and will
528 be called s3c2410_wdt.
530 config SA1100_WATCHDOG
531 tristate "SA1100/PXA2xx watchdog"
532 depends on ARCH_SA1100 || ARCH_PXA
534 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
535 reboot your system when timeout is reached.
537 NOTE: once enabled, this timer cannot be disabled.
539 To compile this driver as a module, choose M here: the
540 module will be called sa1100_wdt.
543 tristate "Synopsys DesignWare watchdog"
547 Say Y here if to include support for the Synopsys DesignWare
548 watchdog timer found in many chips.
549 To compile this driver as a module, choose M here: the
550 module will be called dw_wdt.
552 config EP93XX_WATCHDOG
553 tristate "EP93xx Watchdog"
554 depends on ARCH_EP93XX || COMPILE_TEST
557 Say Y here if to include support for the watchdog timer
558 embedded in the Cirrus Logic EP93xx family of devices.
560 To compile this driver as a module, choose M here: the
561 module will be called ep93xx_wdt.
564 tristate "OMAP Watchdog"
565 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
568 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog.
569 Say 'Y' here to enable the
570 OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
572 config PNX4008_WATCHDOG
573 tristate "LPC32XX Watchdog"
574 depends on ARCH_LPC32XX || COMPILE_TEST
577 Say Y here if to include support for the watchdog timer
578 in the LPC32XX processor.
579 This driver can be built as a module by choosing M. The module
580 will be called pnx4008_wdt.
582 Say N if you are unsure.
584 config DAVINCI_WATCHDOG
585 tristate "DaVinci watchdog"
586 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
589 Say Y here if to include support for the watchdog timer
590 in the DaVinci DM644x/DM646x or Keystone processors.
591 To compile this driver as a module, choose M here: the
592 module will be called davinci_wdt.
594 NOTE: once enabled, this timer cannot be disabled.
595 Say N if you are unsure.
597 config K3_RTI_WATCHDOG
598 tristate "Texas Instruments K3 RTI watchdog"
599 depends on ARCH_K3 || COMPILE_TEST
602 Say Y here if you want to include support for the K3 watchdog
603 timer (RTI module) available in the K3 generation of processors.
605 config ORION_WATCHDOG
606 tristate "Orion watchdog"
607 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST
611 Say Y here if to include support for the watchdog timer
612 in the Marvell Orion5x and Kirkwood ARM SoCs.
613 To compile this driver as a module, choose M here: the
614 module will be called orion_wdt.
616 config RN5T618_WATCHDOG
617 tristate "Ricoh RN5T618 watchdog"
618 depends on MFD_RN5T618 || COMPILE_TEST
621 If you say yes here you get support for watchdog on the Ricoh
624 This driver can also be built as a module. If so, the module
625 will be called rn5t618_wdt.
627 config SUNXI_WATCHDOG
628 tristate "Allwinner SoCs watchdog support"
629 depends on ARCH_SUNXI || COMPILE_TEST
632 Say Y here to include support for the watchdog timer
634 To compile this driver as a module, choose M here: the
635 module will be called sunxi_wdt.
637 config NPCM7XX_WATCHDOG
638 tristate "Nuvoton NPCM750 watchdog"
639 depends on ARCH_NPCM || COMPILE_TEST
640 default y if ARCH_NPCM7XX
643 Say Y here to include Watchdog timer support for the
644 watchdog embedded into the NPCM7xx.
645 This watchdog is used to reset the system and thus cannot be
646 compiled as a module.
648 config TWL4030_WATCHDOG
649 tristate "TWL4030 Watchdog"
650 depends on TWL4030_CORE
653 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
654 watchdog timer support for TWL4030 chips.
656 config STMP3XXX_RTC_WATCHDOG
657 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
658 depends on RTC_DRV_STMP || COMPILE_TEST
661 Say Y here to include support for the watchdog timer inside
662 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
663 To compile this driver as a module, choose M here: the
664 module will be called stmp3xxx_rtc_wdt.
666 config TS4800_WATCHDOG
667 tristate "TS-4800 Watchdog"
668 depends on HAS_IOMEM && OF
669 depends on SOC_IMX51 || COMPILE_TEST
673 Technologic Systems TS-4800 has watchdog timer implemented in
674 an external FPGA. Say Y here if you want to support for the
675 watchdog timer on TS-4800 board.
677 config TS72XX_WATCHDOG
678 tristate "TS-72XX SBC Watchdog"
679 depends on MACH_TS72XX || COMPILE_TEST
682 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
683 watchdog timer implemented in a external CPLD chip. Say Y here
684 if you want to support for the watchdog timer on TS-72XX boards.
686 To compile this driver as a module, choose M here: the
687 module will be called ts72xx_wdt.
689 config MAX63XX_WATCHDOG
690 tristate "Max63xx watchdog"
694 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
696 config MAX77620_WATCHDOG
697 tristate "Maxim Max77620 Watchdog Timer"
698 depends on MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST
701 This is the driver for the Max77620 watchdog timer.
702 Say 'Y' here to enable the watchdog timer support for
703 MAX77620 chips. To compile this driver as a module,
704 choose M here: the module will be called max77620_wdt.
707 tristate "IMX2+ Watchdog"
708 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
712 This is the driver for the hardware watchdog
713 on the Freescale IMX2 and later processors.
714 If you have one of these processors and wish to have
715 watchdog support enabled, say Y, otherwise say N.
717 To compile this driver as a module, choose M here: the
718 module will be called imx2_wdt.
721 tristate "IMX SC Watchdog"
722 depends on HAVE_ARM_SMCCC
726 This is the driver for the system controller watchdog
727 on the NXP i.MX SoCs with system controller inside, the
728 watchdog driver will call ARM SMC API and trap into
729 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
730 will request system controller to execute the operations.
731 If you have one of these processors and wish to have
732 watchdog support enabled, say Y, otherwise say N.
734 To compile this driver as a module, choose M here: the
735 module will be called imx_sc_wdt.
738 tristate "IMX7ULP Watchdog"
739 depends on ARCH_MXC || COMPILE_TEST
742 This is the driver for the hardware watchdog on the Freescale
743 IMX7ULP and later processors. If you have one of these
744 processors and wish to have watchdog support enabled,
745 say Y, otherwise say N.
747 To compile this driver as a module, choose M here: the
748 module will be called imx7ulp_wdt.
750 config DB500_WATCHDOG
751 tristate "ST-Ericsson DB800 watchdog"
752 depends on MFD_DB8500_PRCMU
756 Say Y here to include Watchdog timer support for the watchdog
757 existing in the prcmu of ST-Ericsson DB8500 platform.
759 To compile this driver as a module, choose M here: the
760 module will be called db500_wdt.
763 tristate "Retu watchdog"
767 Retu watchdog driver for Nokia Internet Tablets (770, N800,
768 N810). At least on N800 the watchdog cannot be disabled, so
769 this driver is essential and you should enable it.
771 To compile this driver as a module, choose M here: the
772 module will be called retu_wdt.
775 tristate "MOXART watchdog"
776 depends on ARCH_MOXART || COMPILE_TEST
778 Say Y here to include Watchdog timer support for the watchdog
779 existing on the MOXA ART SoC series platforms.
781 To compile this driver as a module, choose M here: the
782 module will be called moxart_wdt.
784 config ST_LPC_WATCHDOG
785 tristate "STMicroelectronics LPC Watchdog"
786 depends on ARCH_STI || COMPILE_TEST
790 Say Y here to include STMicroelectronics Low Power Controller
791 (LPC) based Watchdog timer support.
793 To compile this driver as a module, choose M here: the
794 module will be called st_lpc_wdt.
796 config TEGRA_WATCHDOG
797 tristate "Tegra watchdog"
798 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
801 Say Y here to include support for the watchdog timer
802 embedded in NVIDIA Tegra SoCs.
804 To compile this driver as a module, choose M here: the
805 module will be called tegra_wdt.
808 tristate "QCOM watchdog"
810 depends on ARCH_QCOM || COMPILE_TEST
813 Say Y here to include Watchdog timer support for the watchdog found
814 on QCOM chipsets. Currently supported targets are the MSM8960,
815 APQ8064, and IPQ8064.
817 To compile this driver as a module, choose M here: the
818 module will be called qcom_wdt.
820 config MESON_GXBB_WATCHDOG
821 tristate "Amlogic Meson GXBB SoCs watchdog support"
822 depends on ARCH_MESON || COMPILE_TEST
825 Say Y here to include support for the watchdog timer
826 in Amlogic Meson GXBB SoCs.
827 To compile this driver as a module, choose M here: the
828 module will be called meson_gxbb_wdt.
830 config MESON_WATCHDOG
831 tristate "Amlogic Meson SoCs watchdog support"
832 depends on ARCH_MESON || COMPILE_TEST
835 Say Y here to include support for the watchdog timer
836 in Amlogic Meson SoCs.
837 To compile this driver as a module, choose M here: the
838 module will be called meson_wdt.
840 config MEDIATEK_WATCHDOG
841 tristate "Mediatek SoCs watchdog support"
842 depends on ARCH_MEDIATEK || COMPILE_TEST
843 default ARCH_MEDIATEK
845 select RESET_CONTROLLER
847 Say Y here to include support for the watchdog timer
849 To compile this driver as a module, choose M here: the
850 module will be called mtk_wdt.
852 config DIGICOLOR_WATCHDOG
853 tristate "Conexant Digicolor SoCs watchdog support"
854 depends on ARCH_DIGICOLOR || COMPILE_TEST
857 Say Y here to include support for the watchdog timer
858 in Conexant Digicolor SoCs.
859 To compile this driver as a module, choose M here: the
860 module will be called digicolor_wdt.
862 config ARM_SMC_WATCHDOG
863 tristate "ARM Secure Monitor Call based watchdog support"
864 depends on ARM || ARM64
866 depends on HAVE_ARM_SMCCC
869 Say Y here to include support for a watchdog timer
870 implemented by the EL3 Secure Monitor on ARM platforms.
871 Requires firmware support.
872 To compile this driver as a module, choose M here: the
873 module will be called arm_smc_wdt.
875 config LPC18XX_WATCHDOG
876 tristate "LPC18xx/43xx Watchdog"
877 depends on ARCH_LPC18XX || COMPILE_TEST
881 Say Y here if to include support for the watchdog timer
882 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
884 To compile this driver as a module, choose M here: the
885 module will be called lpc18xx_wdt.
888 tristate "Renesas WDT Watchdog"
889 depends on ARCH_RENESAS || COMPILE_TEST
892 This driver adds watchdog support for the integrated watchdogs in the
893 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
895 config RENESAS_RZAWDT
896 tristate "Renesas RZ/A WDT Watchdog"
897 depends on ARCH_RENESAS || COMPILE_TEST
900 This driver adds watchdog support for the integrated watchdogs in the
901 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
903 config RENESAS_RZN1WDT
904 tristate "Renesas RZ/N1 watchdog"
905 depends on ARCH_RENESAS || COMPILE_TEST
908 This driver adds watchdog support for the integrated watchdogs in the
909 Renesas RZ/N1 SoCs. These watchdogs can be used to reset a system.
911 config RENESAS_RZG2LWDT
912 tristate "Renesas RZ/G2L WDT Watchdog"
913 depends on ARCH_RENESAS || COMPILE_TEST
916 This driver adds watchdog support for the integrated watchdogs in the
917 Renesas RZ/G2L SoCs. These watchdogs can be used to reset a system.
919 config ASPEED_WATCHDOG
920 tristate "Aspeed BMC watchdog support"
921 depends on ARCH_ASPEED || COMPILE_TEST
924 Say Y here to include support for the watchdog timer
927 This driver is required to reboot the SoC.
929 To compile this driver as a module, choose M here: the
930 module will be called aspeed_wdt.
932 config STM32_WATCHDOG
933 tristate "STM32 Independent WatchDoG (IWDG) support"
934 depends on ARCH_STM32
938 Say Y here to include support for the watchdog timer
941 To compile this driver as a module, choose M here: the
942 module will be called stm32_iwdg.
944 config STPMIC1_WATCHDOG
945 tristate "STPMIC1 PMIC watchdog support"
946 depends on MFD_STPMIC1
949 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
950 If the watchdog timer expires, stpmic1 will shut down all its power
953 To compile this driver as a module, choose M here: the
954 module will be called spmic1_wdt.
956 config UNIPHIER_WATCHDOG
957 tristate "UniPhier watchdog support"
958 depends on ARCH_UNIPHIER || COMPILE_TEST
959 depends on OF && MFD_SYSCON
962 Say Y here to include support watchdog timer embedded
963 into the UniPhier system.
965 To compile this driver as a module, choose M here: the
966 module will be called uniphier_wdt.
968 config RTD119X_WATCHDOG
969 bool "Realtek RTD119x/RTD129x watchdog support"
970 depends on ARCH_REALTEK || COMPILE_TEST
975 Say Y here to include support for the watchdog timer in
976 Realtek RTD1295 SoCs.
978 config REALTEK_OTTO_WDT
979 tristate "Realtek Otto MIPS watchdog support"
980 depends on MACH_REALTEK_RTL || COMPILE_TEST
981 depends on COMMON_CLK
983 default MACH_REALTEK_RTL
985 Say Y here to include support for the watchdog timer on Realtek
986 RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout
987 notifications and system reset on timeout.
989 When built as a module this will be called realtek_otto_wdt.
992 tristate "Spreadtrum watchdog support"
993 depends on ARCH_SPRD || COMPILE_TEST
996 Say Y here to include watchdog timer supported
997 by Spreadtrum system.
999 config PM8916_WATCHDOG
1000 tristate "QCOM PM8916 pmic watchdog"
1001 depends on OF && MFD_SPMI_PMIC
1002 select WATCHDOG_CORE
1004 Say Y here to include support watchdog timer embedded into the
1007 config VISCONTI_WATCHDOG
1008 tristate "Toshiba Visconti series watchdog support"
1009 depends on ARCH_VISCONTI || COMPILE_TEST
1010 select WATCHDOG_CORE
1012 Say Y here to include support for the watchdog timer in Toshiba
1015 config MSC313E_WATCHDOG
1016 tristate "MStar MSC313e watchdog"
1017 depends on ARCH_MSTARV7 || COMPILE_TEST
1018 select WATCHDOG_CORE
1020 Say Y here to include support for the Watchdog timer embedded
1021 into MStar MSC313e chips. This will reboot your system when the
1024 To compile this driver as a module, choose M here: the
1025 module will be called msc313e_wdt.
1027 config APPLE_WATCHDOG
1028 tristate "Apple SoC watchdog"
1029 depends on ARCH_APPLE || COMPILE_TEST
1030 select WATCHDOG_CORE
1032 Say Y here to include support for the Watchdog found in Apple
1033 SoCs such as the M1. Next to the common watchdog features this
1034 driver is also required in order to reboot these SoCs.
1036 To compile this driver as a module, choose M here: the
1037 module will be called apple_wdt.
1039 config SUNPLUS_WATCHDOG
1040 tristate "Sunplus watchdog support"
1041 depends on ARCH_SUNPLUS || COMPILE_TEST
1042 select WATCHDOG_CORE
1044 Say Y here to include support for the watchdog timer
1047 To compile this driver as a module, choose M here: the
1048 module will be called sunplus_wdt.
1050 # X86 (i386 + ia64 + x86_64) Architecture
1053 tristate "Acquire SBC Watchdog Timer"
1056 This is the driver for the hardware watchdog on Single Board
1057 Computers produced by Acquire Inc (and others). This watchdog
1058 simply watches your kernel to make sure it doesn't freeze, and if
1059 it does, it reboots your computer after a certain amount of time.
1061 To compile this driver as a module, choose M here: the
1062 module will be called acquirewdt.
1064 Most people will say N.
1066 config ADVANTECH_WDT
1067 tristate "Advantech SBC Watchdog Timer"
1070 If you are configuring a Linux kernel for the Advantech single-board
1071 computer, say `Y' here to support its built-in watchdog timer
1072 feature. More information can be found at
1073 <https://www.advantech.com.tw/products/>
1075 config ADVANTECH_EC_WDT
1076 tristate "Advantech Embedded Controller Watchdog Timer"
1079 This driver supports Advantech products with ITE based Embedded Controller.
1080 It does not support Advantech products with other ECs or without EC.
1083 tristate "ALi M1535 PMU Watchdog Timer"
1084 depends on X86 && PCI
1086 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1088 To compile this driver as a module, choose M here: the
1089 module will be called alim1535_wdt.
1091 Most people will say N.
1094 tristate "ALi M7101 PMU Computer Watchdog"
1097 This is the driver for the hardware watchdog on the ALi M7101 PMU
1098 as used in the x86 Cobalt servers and also found in some
1099 SPARC Netra servers too.
1101 To compile this driver as a module, choose M here: the
1102 module will be called alim7101_wdt.
1104 Most people will say N.
1107 tristate "WinSystems EBC-C384 Watchdog Timer"
1110 select WATCHDOG_CORE
1112 Enables watchdog timer support for the watchdog timer on the
1113 WinSystems EBC-C384 motherboard. The timeout may be configured via
1114 the timeout module parameter.
1117 tristate "Exar Watchdog Timer"
1119 select WATCHDOG_CORE
1121 Enables watchdog timer support for the watchdog timer present
1122 in some Exar/MaxLinear UART chips like the XR28V38x.
1124 To compile this driver as a module, choose M here: the
1125 module will be called exar_wdt.
1128 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1130 select WATCHDOG_CORE
1132 This is the driver for the hardware watchdog on the Fintek F71808E,
1133 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1134 F81866 Super I/O controllers.
1136 You can compile this driver directly into the kernel, or use
1137 it as a module. The module will be called f71808e_wdt.
1140 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1141 depends on X86 && PCI
1142 select WATCHDOG_CORE
1144 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1145 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1146 the machine after its expiration. The expiration time can be
1147 configured with the "heartbeat" parameter.
1149 To compile this driver as a module, choose M here: the
1150 module will be called sp5100_tco.
1153 tristate "AMD Geode CS5535/CS5536 Watchdog"
1154 depends on CS5535_MFGPT
1156 This driver enables a watchdog capability built into the
1157 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1158 processors. This watchdog watches your kernel to make sure
1159 it doesn't freeze, and if it does, it reboots your computer after
1160 a certain amount of time.
1162 You can compile this driver directly into the kernel, or use
1163 it as a module. The module will be called geodewdt.
1166 tristate "AMD Elan SC520 processor Watchdog"
1167 depends on MELAN || COMPILE_TEST
1169 This is the driver for the hardware watchdog built in to the
1170 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1171 This watchdog simply watches your kernel to make sure it doesn't
1172 freeze, and if it does, it reboots your computer after a certain
1175 You can compile this driver directly into the kernel, or use
1176 it as a module. The module will be called sc520_wdt.
1178 config SBC_FITPC2_WATCHDOG
1179 tristate "Compulab SBC-FITPC2 watchdog"
1182 This is the driver for the built-in watchdog timer on the fit-PC2,
1183 fit-PC2i, CM-iAM single-board computers made by Compulab.
1185 It's possible to enable the watchdog timer either from BIOS (F2) or
1187 When the "Watchdog Timer Value" is enabled one can set 31-255 seconds
1190 Entering BIOS setup temporarily disables watchdog operation regardless
1191 of current state, so system will not be restarted while user is in
1194 Once the watchdog is enabled the system will be restarted every
1195 "Watchdog Timer Value" period, so to prevent it user can restart or
1196 disable the watchdog.
1198 To compile this driver as a module, choose M here: the
1199 module will be called sbc_fitpc2_wdt.
1201 Most people will say N.
1204 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1207 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1208 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1209 information are at <http://www.eurotech.it/>.
1212 tristate "IB700 SBC Watchdog Timer"
1215 This is the driver for the hardware watchdog on the IB700 Single
1216 Board Computer produced by TMC Technology (www.tmc-uk.com). This
1217 watchdog simply watches your kernel to make sure it doesn't freeze,
1218 and if it does, it reboots your computer after a certain amount of time.
1220 This driver is like the WDT501 driver but for slightly different
1223 To compile this driver as a module, choose M here: the
1224 module will be called ib700wdt.
1226 Most people will say N.
1229 tristate "IBM Automatic Server Restart"
1232 This is the driver for the IBM Automatic Server Restart watchdog
1233 timer built-in into some eServer xSeries machines.
1235 To compile this driver as a module, choose M here: the
1236 module will be called ibmasr.
1239 tristate "ICP Single Board Computer Watchdog Timer"
1242 This is a driver for the hardware watchdog on the ICP Single
1243 Board Computer. This driver is working on (at least) the following
1244 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1246 To compile this driver as a module, choose M here: the
1247 module will be called wafer5823wdt.
1250 tristate "Intel 6300ESB Timer/Watchdog"
1252 select WATCHDOG_CORE
1254 Hardware driver for the watchdog timer built into the Intel
1255 6300ESB controller hub.
1257 To compile this driver as a module, choose M here: the
1258 module will be called i6300esb.
1261 tristate "Intel Atom E6xx Watchdog"
1262 depends on X86 && PCI
1263 select WATCHDOG_CORE
1267 Hardware driver for the watchdog timer built into the Intel
1268 Atom E6XX (TunnelCreek) processor.
1270 To compile this driver as a module, choose M here: the
1271 module will be called ie6xx_wdt.
1273 config INTEL_MID_WATCHDOG
1274 tristate "Intel MID Watchdog Timer"
1275 depends on X86_INTEL_MID
1276 select WATCHDOG_CORE
1278 Watchdog timer driver built into the Intel SCU for Intel MID
1281 This driver currently supports only the watchdog evolution
1282 implementation in SCU, available for Merrifield generation.
1284 To compile this driver as a module, choose M here.
1287 tristate "Intel TCO Timer/Watchdog"
1288 depends on (X86 || IA64) && PCI
1289 select WATCHDOG_CORE
1290 depends on I2C || I2C=n
1291 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1292 select LPC_ICH if !EXPERT
1293 select I2C_I801 if !EXPERT && I2C
1295 Hardware driver for the intel TCO timer based watchdog devices.
1296 These drivers are included in the Intel 82801 I/O Controller
1297 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1300 The TCO (Total Cost of Ownership) timer is a watchdog timer
1301 that will reboot the machine after its second expiration. The
1302 expiration time can be configured with the "heartbeat" parameter.
1304 On some motherboards the driver may fail to reset the chipset's
1305 NO_REBOOT flag which prevents the watchdog from rebooting the
1306 machine. If this is the case you will get a kernel message like
1307 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1309 To compile this driver as a module, choose M here: the
1310 module will be called iTCO_wdt.
1312 config ITCO_VENDOR_SUPPORT
1313 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1316 Add vendor specific support to the intel TCO timer based watchdog
1317 devices. At this moment we only have additional support for some
1318 SuperMicro Inc. motherboards.
1321 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1324 This is the driver for the built-in watchdog timer on the IT8712F
1325 Super I/0 chipset used on many motherboards.
1327 If the driver does not work, then make sure that the game port in
1328 the BIOS is enabled.
1330 To compile this driver as a module, choose M here: the
1331 module will be called it8712f_wdt.
1334 tristate "IT87 Watchdog Timer"
1336 select WATCHDOG_CORE
1338 This is the driver for the hardware watchdog on the ITE IT8607,
1339 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1340 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1341 IT8783 Super I/O chips.
1343 This watchdog simply watches your kernel to make sure it doesn't
1344 freeze, and if it does, it reboots your computer after a certain
1347 To compile this driver as a module, choose M here: the module will
1351 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1352 select WATCHDOG_CORE
1353 depends on (ARM64 || X86) && PCI
1355 A software monitoring watchdog and NMI handling driver. This driver
1356 will detect lockups and provide a stack trace. This is a driver that
1357 will only load on an HP ProLiant system with a minimum of iLO2 support.
1358 To compile this driver as a module, choose M here: the module will be
1361 config HPWDT_NMI_DECODING
1362 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1363 depends on X86 && HP_WATCHDOG
1366 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1367 "Generate NMI to System" virtual button. When an NMI is claimed
1368 by the driver, panic is called.
1371 tristate "Kontron COM Watchdog Timer"
1372 depends on MFD_KEMPLD
1373 select WATCHDOG_CORE
1375 Support for the PLD watchdog on some Kontron ETX and COMexpress
1376 (ETXexpress) modules
1378 This driver can also be built as a module. If so, the module will be
1382 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1385 This is a driver for National Semiconductor PC87307/PC97307 hardware
1386 watchdog cards as found on the SC1200. This watchdog is mainly used
1387 for power management purposes and can be used to power down the device
1388 during inactivity periods (includes interrupt activity monitoring).
1390 To compile this driver as a module, choose M here: the
1391 module will be called sc1200wdt.
1393 Most people will say N.
1396 tristate "National Semiconductor SCx200 Watchdog"
1397 depends on SCx200 && PCI
1399 Enable the built-in watchdog timer support on the National
1400 Semiconductor SCx200 processors.
1402 If compiled as a module, it will be called scx200_wdt.
1405 tristate "NS PC87413 watchdog"
1408 This is the driver for the hardware watchdog on the PC87413 chipset
1409 This watchdog simply watches your kernel to make sure it doesn't
1410 freeze, and if it does, it reboots your computer after a certain
1413 To compile this driver as a module, choose M here: the
1414 module will be called pc87413_wdt.
1416 Most people will say N.
1419 tristate "nVidia TCO Timer/Watchdog"
1420 depends on X86 && PCI
1422 Hardware driver for the TCO timer built into the nVidia Hub family
1423 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1424 watchdog timer that will reboot the machine after its second
1425 expiration. The expiration time can be configured with the
1426 "heartbeat" parameter.
1428 On some motherboards the driver may fail to reset the chipset's
1429 NO_REBOOT flag which prevents the watchdog from rebooting the
1430 machine. If this is the case you will get a kernel message like
1431 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1433 To compile this driver as a module, choose M here: the
1434 module will be called nv_tco.
1437 tristate "RDC R-321x SoC watchdog"
1438 depends on X86_RDC321X || COMPILE_TEST
1441 This is the driver for the built in hardware watchdog
1442 in the RDC R-321x SoC.
1444 To compile this driver as a module, choose M here: the
1445 module will be called rdc321x_wdt.
1448 tristate "SBC-60XX Watchdog Timer"
1451 This driver can be used with the watchdog timer found on some
1452 single board computers, namely the 6010 PII based computer.
1453 It may well work with other cards. It reads port 0x443 to enable
1454 and re-set the watchdog timer, and reads port 0x45 to disable
1455 the watchdog. If you have a card that behave in similar ways,
1456 you can probably make this driver work with your card as well.
1458 You can compile this driver directly into the kernel, or use
1459 it as a module. The module will be called sbc60xxwdt.
1462 tristate "SBC8360 Watchdog Timer"
1466 This is the driver for the hardware watchdog on the SBC8360 Single
1467 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1469 To compile this driver as a module, choose M here: the
1470 module will be called sbc8360.
1472 Most people will say N.
1475 tristate "SBC Nano 7240 Watchdog Timer"
1476 depends on X86_32 && !UML
1478 This is the driver for the hardware watchdog found on the IEI
1479 single board computers EPIC Nano 7240 (and likely others). This
1480 watchdog simply watches your kernel to make sure it doesn't freeze,
1481 and if it does, it reboots your computer after a certain amount of
1484 To compile this driver as a module, choose M here: the
1485 module will be called sbc7240_wdt.
1488 tristate "SMA CPU5 Watchdog"
1492 To compile this driver as a module, choose M here: the
1493 module will be called cpu5wdt.
1495 config SMSC_SCH311X_WDT
1496 tristate "SMSC SCH311X Watchdog Timer"
1499 This is the driver for the hardware watchdog timer on the
1500 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1501 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1504 To compile this driver as a module, choose M here: the
1505 module will be called sch311x_wdt.
1507 config SMSC37B787_WDT
1508 tristate "Winbond SMsC37B787 Watchdog Timer"
1511 This is the driver for the hardware watchdog component on the
1512 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1513 from Vision Systems and maybe others.
1515 This watchdog simply watches your kernel to make sure it doesn't
1516 freeze, and if it does, it reboots your computer after a certain
1519 Usually a userspace daemon will notify the kernel WDT driver that
1520 userspace is still alive, at regular intervals.
1522 To compile this driver as a module, choose M here: the
1523 module will be called smsc37b787_wdt.
1525 Most people will say N.
1528 tristate "TQ-Systems TQMX86 Watchdog Timer"
1530 select WATCHDOG_CORE
1532 This is the driver for the hardware watchdog timer in the TQMX86 IO
1533 controller found on some of their ComExpress Modules.
1535 To compile this driver as a module, choose M here; the module
1536 will be called tqmx86_wdt.
1538 Most people will say N.
1541 tristate "VIA Watchdog Timer"
1542 depends on X86 && PCI
1543 select WATCHDOG_CORE
1545 This is the driver for the hardware watchdog timer on VIA
1546 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1548 To compile this driver as a module, choose M here; the module
1549 will be called via_wdt.
1551 Most people will say N.
1554 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1556 select WATCHDOG_CORE
1558 This is the driver for the hardware watchdog on the following
1560 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1574 This watchdog simply watches your kernel to make sure it doesn't
1575 freeze, and if it does, it reboots your computer after a certain
1578 To compile this driver as a module, choose M here: the
1579 module will be called w83627hf_wdt.
1581 Most people will say N.
1584 tristate "W83877F (EMACS) Watchdog Timer"
1587 This is the driver for the hardware watchdog on the W83877F chipset
1588 as used in EMACS PC-104 motherboards (and likely others). This
1589 watchdog simply watches your kernel to make sure it doesn't freeze,
1590 and if it does, it reboots your computer after a certain amount of
1593 To compile this driver as a module, choose M here: the
1594 module will be called w83877f_wdt.
1596 Most people will say N.
1599 tristate "W83977F (PCM-5335) Watchdog Timer"
1602 This is the driver for the hardware watchdog on the W83977F I/O chip
1603 as used in AAEON's PCM-5335 SBC (and likely others). This
1604 watchdog simply watches your kernel to make sure it doesn't freeze,
1605 and if it does, it reboots your computer after a certain amount of
1608 To compile this driver as a module, choose M here: the
1609 module will be called w83977f_wdt.
1612 tristate "ZF MachZ Watchdog"
1615 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1616 N. This is the driver for the watchdog timer built-in on that
1617 processor using ZF-Logic interface. This watchdog simply watches
1618 your kernel to make sure it doesn't freeze, and if it does, it
1619 reboots your computer after a certain amount of time.
1621 To compile this driver as a module, choose M here: the
1622 module will be called machzwd.
1624 config SBC_EPX_C3_WATCHDOG
1625 tristate "Winsystems SBC EPX-C3 watchdog"
1628 This is the driver for the built-in watchdog timer on the EPX-C3
1629 Single-board computer made by Winsystems, Inc.
1631 *Note*: This hardware watchdog is not probeable and thus there
1632 is no way to know if writing to its IO address will corrupt
1633 your system or have any real effect. The only way to be sure
1634 that this driver does what you want is to make sure you
1635 are running it on an EPX-C3 from Winsystems with the watchdog
1636 timer at IO address 0x1ee and 0x1ef. It will write to both those
1637 IO ports. Basically, the assumption is made that if you compile
1638 this driver into your kernel and/or load it as a module, that you
1639 know what you are doing and that you are in fact running on an
1642 To compile this driver as a module, choose M here: the
1643 module will be called sbc_epx_c3.
1645 config INTEL_MEI_WDT
1646 tristate "Intel MEI iAMT Watchdog"
1647 depends on INTEL_MEI && X86
1648 select WATCHDOG_CORE
1650 A device driver for the Intel MEI iAMT watchdog.
1652 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1653 Whenever the OS hangs or crashes, iAMT will send an event
1654 to any subscriber to this event. The watchdog doesn't reset the
1657 To compile this driver as a module, choose M here:
1658 the module will be called mei_wdt.
1661 tristate "NI 903x/913x Watchdog"
1662 depends on X86 && ACPI
1663 select WATCHDOG_CORE
1665 This is the driver for the watchdog timer on the National Instruments
1666 903x/913x real-time controllers.
1668 To compile this driver as a module, choose M here: the module will be
1672 tristate "NIC7018 Watchdog"
1673 depends on X86 && ACPI
1674 select WATCHDOG_CORE
1676 Support for National Instruments NIC7018 Watchdog.
1678 To compile this driver as a module, choose M here: the module will be
1681 config SIEMENS_SIMATIC_IPC_WDT
1682 tristate "Siemens Simatic IPC Watchdog"
1683 depends on SIEMENS_SIMATIC_IPC
1684 select WATCHDOG_CORE
1687 This driver adds support for several watchdogs found in Industrial
1690 To compile this driver as a module, choose M here: the module will be
1691 called simatic-ipc-wdt.
1695 config M54xx_WATCHDOG
1696 tristate "MCF54xx watchdog support"
1699 To compile this driver as a module, choose M here: the
1700 module will be called m54xx_wdt.
1702 # MicroBlaze Architecture
1707 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1708 depends on ATH79 || (ARM && COMPILE_TEST)
1710 Hardware driver for the built-in watchdog timer on the Atheros
1711 AR71XX/AR724X/AR913X SoCs.
1714 tristate "Broadcom BCM47xx Watchdog Timer"
1715 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1716 select WATCHDOG_CORE
1718 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1721 tristate "IDT RC32434 SoC Watchdog Timer"
1722 depends on MIKROTIK_RB532
1724 Hardware driver for the IDT RC32434 SoC built-in
1727 To compile this driver as a module, choose M here: the
1728 module will be called rc32434_wdt.
1731 tristate "Indy/I2 Hardware Watchdog"
1732 depends on SGI_HAS_INDYDOG
1734 Hardware driver for the Indy's/I2's watchdog. This is a
1735 watchdog timer that will reboot the machine after a 60 second
1736 timer expired and no process has written to /dev/watchdog during
1740 tristate "Ingenic jz4740 SoC hardware watchdog"
1742 depends on COMMON_CLK
1743 select WATCHDOG_CORE
1746 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1749 tristate "MTX-1 Hardware Watchdog"
1750 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1752 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1753 will reboot the machine after a 100 seconds timer expired.
1756 tristate "Sibyte SoC hardware watchdog"
1759 Watchdog driver for the built in watchdog hardware in Sibyte
1760 SoC processors. There are apparently two watchdog timers
1761 on such processors; this driver supports only the first one,
1762 because currently Linux only supports exporting one watchdog
1765 To compile this driver as a loadable module, choose M here.
1766 The module will be called sb_wdog.
1769 tristate "TI AR7 Watchdog Timer"
1770 depends on AR7 || (MIPS && 32BIT && COMPILE_TEST)
1772 Hardware driver for the TI AR7 Watchdog Timer.
1775 tristate "Toshiba TXx9 Watchdog Timer"
1776 depends on CPU_TX49XX || (MIPS && COMPILE_TEST)
1777 select WATCHDOG_CORE
1779 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1782 tristate "Cavium OCTEON SOC family Watchdog Timer"
1783 depends on CAVIUM_OCTEON_SOC
1785 select WATCHDOG_CORE
1786 select EXPORT_UASM if OCTEON_WDT = m
1788 Hardware driver for OCTEON's on chip watchdog timer.
1789 Enables the watchdog for all cores running Linux. It
1790 installs a NMI handler and pokes the watchdog based on an
1791 interrupt. On first expiration of the watchdog, the
1792 interrupt handler pokes it. The second expiration causes an
1793 NMI that prints a message. The third expiration causes a
1796 When userspace has /dev/watchdog open, no poking is done
1797 from the first interrupt, it is then only poked when the
1801 tristate "Broadcom BCM2835 hardware watchdog"
1802 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1803 select WATCHDOG_CORE
1805 Watchdog driver for the built in watchdog hardware in Broadcom
1808 To compile this driver as a loadable module, choose M here.
1809 The module will be called bcm2835_wdt.
1812 tristate "BCM Kona Watchdog"
1813 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1814 select WATCHDOG_CORE
1816 Support for the watchdog timer on the following Broadcom BCM281xx
1817 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1820 Say 'Y' or 'M' here to enable the driver. The module will be called
1823 config BCM_KONA_WDT_DEBUG
1824 bool "DEBUGFS support for BCM Kona Watchdog"
1825 depends on BCM_KONA_WDT
1827 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1828 access to the driver's internal data structures as well as watchdog
1829 timer hardware registres.
1831 If in doubt, say 'N'.
1834 tristate "BCM63xx/BCM7038 Watchdog"
1835 select WATCHDOG_CORE
1836 depends on HAS_IOMEM
1837 depends on ARCH_BCMBCA || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST
1839 Watchdog driver for the built-in hardware in Broadcom 7038 and
1840 later SoCs used in set-top boxes. BCM7038 was made public
1841 during the 2004 CES, and since then, many Broadcom chips use this
1842 watchdog block, including some cable modem chips and DSL (63xx)
1846 tristate "Imagination Technologies PDC Watchdog Timer"
1847 depends on HAS_IOMEM
1848 depends on MIPS || COMPILE_TEST
1849 select WATCHDOG_CORE
1851 Driver for Imagination Technologies PowerDown Controller
1854 To compile this driver as a loadable module, choose M here.
1855 The module will be called imgpdc_wdt.
1858 tristate "Lantiq SoC watchdog"
1860 select WATCHDOG_CORE
1862 Hardware driver for the Lantiq SoC Watchdog Timer.
1864 config LOONGSON1_WDT
1865 tristate "Loongson1 SoC hardware watchdog"
1866 depends on MACH_LOONGSON32
1867 select WATCHDOG_CORE
1869 Hardware driver for the Loongson1 SoC Watchdog Timer.
1872 tristate "Ralink SoC watchdog"
1873 select WATCHDOG_CORE
1876 Hardware driver for the Ralink SoC Watchdog Timer.
1879 tristate "HPE GXP watchdog support"
1880 depends on ARCH_HPE_GXP
1881 select WATCHDOG_CORE
1883 Say Y here to include support for the watchdog timer
1886 To compile this driver as a module, choose M here.
1887 The module will be called gxp-wdt.
1890 tristate "Mediatek SoC watchdog"
1891 select WATCHDOG_CORE
1894 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
1896 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1899 tristate "Microchip PIC32 hardware watchdog"
1900 select WATCHDOG_CORE
1901 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1903 Watchdog driver for the built in watchdog hardware in a PIC32.
1905 Configuration bits must be set appropriately for the watchdog to be
1906 controlled by this driver.
1908 To compile this driver as a loadable module, choose M here.
1909 The module will be called pic32-wdt.
1912 tristate "Microchip PIC32 Deadman Timer"
1913 select WATCHDOG_CORE
1914 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1916 Watchdog driver for PIC32 instruction fetch counting timer. This
1917 specific timer is typically be used in mission critical and safety
1918 critical applications, where any single failure of the software
1919 functionality and sequencing must be detected.
1921 To compile this driver as a loadable module, choose M here.
1922 The module will be called pic32-dmt.
1924 # PARISC Architecture
1926 # POWERPC Architecture
1929 tristate "GE Watchdog Timer"
1932 Watchdog timer found in a number of GE single board computers.
1935 bool "MPC52xx Watchdog Timer"
1936 depends on PPC_MPC52xx || COMPILE_TEST
1938 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1941 tristate "MPC8xxx Platform Watchdog Timer"
1942 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1943 select WATCHDOG_CORE
1945 This driver is for a SoC level watchdog that exists on some
1946 Freescale PowerPC processors. So far this driver supports:
1951 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1954 tristate "PIKA FPGA Watchdog"
1955 depends on WARP || (PPC64 && COMPILE_TEST)
1958 This enables the watchdog in the PIKA FPGA. Currently used on
1962 tristate "PowerPC Book-E Watchdog Timer"
1963 depends on BOOKE || 4xx
1964 select WATCHDOG_CORE
1966 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1967 MPC85xx SOCs and the IBM PowerPC 440.
1969 Please see Documentation/watchdog/watchdog-api.rst for
1972 config BOOKE_WDT_DEFAULT_TIMEOUT
1973 int "PowerPC Book-E Watchdog Timer Default Timeout"
1974 depends on BOOKE_WDT
1975 default 38 if PPC_E500
1976 range 0 63 if PPC_E500
1977 default 3 if !PPC_E500
1978 range 0 3 if !PPC_E500
1980 Select the default watchdog timer period to be used by the PowerPC
1981 Book-E watchdog driver. A watchdog "event" occurs when the bit
1982 position represented by this number transitions from zero to one.
1984 For Freescale Book-E processors, this is a number between 0 and 63.
1985 For other Book-E processors, this is a number between 0 and 3.
1987 The value can be overridden by the wdt_period command-line parameter.
1990 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1991 select WATCHDOG_CORE
1992 depends on GPIOLIB || COMPILE_TEST
1994 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1996 The driver can also be built as a module. If so, the module will be
1999 If unsure select N here.
2001 # PPC64 Architecture
2004 tristate "POWER Architecture Platform Watchdog Timer"
2005 depends on PPC_PSERIES
2006 select WATCHDOG_CORE
2008 Driver for virtual watchdog timers provided by PAPR
2009 hypervisors (e.g. PowerVM, KVM).
2011 config WATCHDOG_RTAS
2012 tristate "RTAS watchdog"
2015 This driver adds watchdog support for the RTAS watchdog.
2017 To compile this driver as a module, choose M here. The module
2018 will be called wdrtas.
2020 # RISC-V Architecture
2022 config STARFIVE_WATCHDOG
2023 tristate "StarFive Watchdog support"
2024 depends on ARCH_STARFIVE || COMPILE_TEST
2025 select WATCHDOG_CORE
2026 default ARCH_STARFIVE
2028 Say Y here to support the watchdog of StarFive JH7100 and JH7110
2029 SoC. This driver can also be built as a module if choose M.
2033 config DIAG288_WATCHDOG
2034 tristate "System z diag288 Watchdog"
2036 select WATCHDOG_CORE
2038 IBM s/390 and zSeries machines running under z/VM 5.1 or later
2039 provide a virtual watchdog timer to their guest that cause a
2040 user define Control Program command to be executed after a
2042 LPAR provides a very similar interface. This driver handles
2045 To compile this driver as a module, choose M here. The module
2046 will be called diag288_wdt.
2048 # SUPERH (sh + sh64) Architecture
2051 tristate "SuperH Watchdog"
2052 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
2053 select WATCHDOG_CORE
2055 This driver adds watchdog support for the integrated watchdog in the
2056 SuperH processors. If you have one of these processors and wish
2057 to have watchdog support enabled, say Y, otherwise say N.
2059 As a side note, saying Y here will automatically boost HZ to 1000
2060 so that the timer has a chance to clear the overflow counter. On
2061 slower systems (such as the SH-2 and SH-3) this will likely yield
2062 some performance issues. As such, the WDT should be avoided here
2063 unless it is absolutely necessary.
2065 To compile this driver as a module, choose M here: the
2066 module will be called shwdt.
2068 # SPARC Architecture
2070 # SPARC64 Architecture
2072 config WATCHDOG_CP1XXX
2073 tristate "CP1XXX Hardware Watchdog support"
2074 depends on SPARC64 && PCI
2076 This is the driver for the hardware watchdog timers present on
2077 Sun Microsystems CompactPCI models CP1400 and CP1500.
2079 To compile this driver as a module, choose M here: the
2080 module will be called cpwatchdog.
2082 If you do not have a CompactPCI model CP1400 or CP1500, or
2083 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2084 you should say N to this option.
2087 tristate "RIO Hardware Watchdog support"
2088 depends on SPARC64 && PCI
2090 Say Y here to support the hardware watchdog capability on Sun RIO
2091 machines. The watchdog timeout period is normally one minute but
2092 can be changed with a boot-time parameter.
2094 config WATCHDOG_SUN4V
2095 tristate "Sun4v Watchdog support"
2096 select WATCHDOG_CORE
2099 Say Y here to support the hypervisor watchdog capability embedded
2100 in the SPARC sun4v architecture.
2102 To compile this driver as a module, choose M here. The module will
2103 be called sun4v_wdt.
2105 # XTENSA Architecture
2110 tristate "Xen Watchdog support"
2112 select WATCHDOG_CORE
2114 Say Y here to support the hypervisor watchdog capability provided
2115 by Xen 4.0 and newer. The watchdog timeout period is normally one
2116 minute but can be changed with a boot-time parameter.
2119 tristate "UML watchdog"
2120 depends on UML || COMPILE_TEST
2123 # ISA-based Watchdog Cards
2126 comment "ISA-based Watchdog Cards"
2130 tristate "Berkshire Products ISA-PC Watchdog"
2133 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2134 This card simply watches your kernel to make sure it doesn't freeze,
2135 and if it does, it reboots your computer after a certain amount of
2136 time. This driver is like the WDT501 driver but for different
2137 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>.
2138 The PC watchdog cards can be ordered from <http://www.berkprod.com/>.
2140 To compile this driver as a module, choose M here: the
2141 module will be called pcwd.
2143 Most people will say N.
2146 tristate "Mixcom Watchdog"
2149 This is a driver for the Mixcom hardware watchdog cards. This
2150 watchdog simply watches your kernel to make sure it doesn't freeze,
2151 and if it does, it reboots your computer after a certain amount of
2154 To compile this driver as a module, choose M here: the
2155 module will be called mixcomwd.
2157 Most people will say N.
2160 tristate "WDT Watchdog timer"
2163 If you have a WDT500P or WDT501P watchdog board, say Y here,
2164 otherwise N. It is not possible to probe for this board, which means
2165 that you have to inform the kernel about the IO port and IRQ that
2166 is needed (you can do this via the io and irq parameters)
2168 To compile this driver as a module, choose M here: the
2169 module will be called wdt.
2172 # PCI-based Watchdog Cards
2175 comment "PCI-based Watchdog Cards"
2178 config PCIPCWATCHDOG
2179 tristate "Berkshire Products PCI-PC Watchdog"
2182 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2183 This card simply watches your kernel to make sure it doesn't freeze,
2184 and if it does, it reboots your computer after a certain amount of
2185 time. The card can also monitor the internal temperature of the PC.
2186 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2188 To compile this driver as a module, choose M here: the
2189 module will be called pcwd_pci.
2191 Most people will say N.
2194 tristate "PCI-WDT500/501 Watchdog timer"
2197 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2199 If you have a PCI-WDT501 watchdog board then you can enable the
2200 temperature sensor by setting the type parameter to 501.
2202 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2203 can do this via the tachometer parameter. Only do this if you have a
2204 fan tachometer actually set up.
2206 To compile this driver as a module, choose M here: the
2207 module will be called wdt_pci.
2210 # USB-based Watchdog Cards
2213 comment "USB-based Watchdog Cards"
2216 config USBPCWATCHDOG
2217 tristate "Berkshire Products USB-PC Watchdog"
2220 This is the driver for the Berkshire Products USB-PC Watchdog card.
2221 This card simply watches your kernel to make sure it doesn't freeze,
2222 and if it does, it reboots your computer after a certain amount of
2223 time. The card can also monitor the internal temperature of the PC.
2224 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2226 To compile this driver as a module, choose M here: the
2227 module will be called pcwd_usb.
2229 Most people will say N.
2231 config KEEMBAY_WATCHDOG
2232 tristate "Intel Keem Bay SoC non-secure watchdog"
2233 depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
2234 select WATCHDOG_CORE
2236 This option enable support for an In-secure watchdog timer driver for
2237 Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every
2238 count unit. An interrupt will be triggered, when the count crosses
2239 the threshold configured in the register.
2241 To compile this driver as a module, choose M here: the
2242 module will be called keembay_wdt.