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 ZIIRAVE_WATCHDOG
308 tristate "Zodiac RAVE Watchdog Timer"
312 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
315 To compile this driver as a module, choose M here: the
316 module will be called ziirave_wdt.
318 config RAVE_SP_WATCHDOG
319 tristate "RAVE SP Watchdog timer"
320 depends on RAVE_SP_CORE
321 depends on NVMEM || !NVMEM
324 Support for the watchdog on RAVE SP device.
327 tristate "Mellanox Watchdog"
328 depends on MELLANOX_PLATFORM
332 This is the driver for the hardware watchdog on Mellanox systems.
333 If you are going to use it, say Y here, otherwise N.
334 This driver can be used together with the watchdog daemon.
335 It can also watch your kernel to make sure it doesn't freeze,
336 and if it does, it reboots your system after a certain amount of
339 To compile this driver as a module, choose M here: the
340 module will be called mlx-wdt.
342 config SL28CPLD_WATCHDOG
343 tristate "Kontron sl28cpld Watchdog"
344 depends on MFD_SL28CPLD || COMPILE_TEST
347 Say Y here to include support for the watchdog timer
348 on the Kontron sl28 CPLD.
350 To compile this driver as a module, choose M here: the
351 module will be called sl28cpld_wdt.
357 config ARM_SP805_WATCHDOG
358 tristate "ARM SP805 Watchdog"
359 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
362 ARM Primecell SP805 Watchdog timer. This will reboot your system when
363 the timeout is reached.
365 config ARM_SBSA_WATCHDOG
366 tristate "ARM SBSA Generic Watchdog"
368 depends on ARM_ARCH_TIMER
371 ARM SBSA Generic Watchdog has two stage timeouts:
372 the first signal (WS0) is for alerting the system by interrupt,
373 the second one (WS1) is a real hardware reset.
374 More details: ARM DEN0029B - Server Base System Architecture (SBSA)
376 This driver can operate ARM SBSA Generic Watchdog as a single stage
377 or a two stages watchdog, it depends on the module parameter "action".
379 Note: the maximum timeout in the two stages mode is half of that in
380 the single stage mode.
382 To compile this driver as module, choose M here: The module
383 will be called sbsa_gwdt.
385 config ARMADA_37XX_WATCHDOG
386 tristate "Armada 37xx watchdog"
387 depends on ARCH_MVEBU || COMPILE_TEST
392 Say Y here to include support for the watchdog timer found on
393 Marvell Armada 37xx SoCs.
394 To compile this driver as a module, choose M here: the
395 module will be called armada_37xx_wdt.
397 config ASM9260_WATCHDOG
398 tristate "Alphascale ASM9260 watchdog"
399 depends on MACH_ASM9260 || COMPILE_TEST
402 select RESET_CONTROLLER
404 Watchdog timer embedded into Alphascale asm9260 chips. This will
405 reboot your system when the timeout is reached.
407 config AT91RM9200_WATCHDOG
408 tristate "AT91RM9200 watchdog"
409 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
411 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
412 system when the timeout is reached.
414 config AT91SAM9X_WATCHDOG
415 tristate "AT91SAM9X / AT91CAP9 watchdog"
416 depends on ARCH_AT91 || COMPILE_TEST
419 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
420 reboot your system when the timeout is reached.
422 config SAMA5D4_WATCHDOG
423 tristate "Atmel SAMA5D4 Watchdog Timer"
424 depends on ARCH_AT91 || COMPILE_TEST
427 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
428 Its Watchdog Timer Mode Register can be written more than once.
429 This will reboot your system when the timeout is reached.
431 config CADENCE_WATCHDOG
432 tristate "Cadence Watchdog Timer"
436 Say Y here if you want to include support for the watchdog
437 timer in the Xilinx Zynq.
439 config 21285_WATCHDOG
440 tristate "DC21285 watchdog"
441 depends on FOOTBRIDGE
443 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
444 here if you wish to use this. Alternatively say M to compile the
445 driver as a module, which will be called wdt285.
447 This driver does not work on all machines. In particular, early CATS
448 boards have hardware problems that will cause the machine to simply
449 lock up if the watchdog fires.
451 "If in doubt, leave it out" - say N.
454 tristate "NetWinder WB83C977 watchdog"
455 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
457 Say Y here to include support for the WB977 watchdog included in
458 NetWinder machines. Alternatively say M to compile the driver as
459 a module, which will be called wdt977.
461 Not sure? It's safe to say N.
463 config FTWDT010_WATCHDOG
464 tristate "Faraday Technology FTWDT010 watchdog"
465 depends on ARM || COMPILE_TEST
469 Say Y here if to include support for the Faraday Technology
470 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
473 To compile this driver as a module, choose M here: the
474 module will be called ftwdt010_wdt.
476 config IXP4XX_WATCHDOG
477 tristate "IXP4xx Watchdog"
478 depends on ARCH_IXP4XX
481 Say Y here if to include support for the watchdog timer
482 in the Intel IXP4xx network processors. This driver can
483 be built as a module by choosing M. The module will
484 be called ixp4xx_wdt.
486 Note: The internal IXP4xx watchdog does a soft CPU reset
487 which doesn't reset any peripherals. There are circumstances
488 where the watchdog will fail to reset the board correctly
489 (e.g., if the boot ROM is in an unreadable state).
491 Say N if you are unsure.
493 config S3C2410_WATCHDOG
494 tristate "S3C2410 Watchdog"
495 depends on ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || \
498 select MFD_SYSCON if ARCH_EXYNOS
500 Watchdog timer block in the Samsung S3C24xx, S3C64xx, S5Pv210 and
501 Exynos SoCs. This will reboot the system when the timer expires with
502 the watchdog enabled.
504 The driver is limited by the speed of the system's PCLK
505 signal, so with reasonably fast systems (PCLK around 50-66MHz)
506 then watchdog intervals of over approximately 20seconds are
509 Choose Y/M here only if you build for such Samsung SoC.
510 The driver can be built as a module by choosing M, and will
511 be called s3c2410_wdt.
513 config SA1100_WATCHDOG
514 tristate "SA1100/PXA2xx watchdog"
515 depends on ARCH_SA1100 || ARCH_PXA
517 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
518 reboot your system when timeout is reached.
520 NOTE: once enabled, this timer cannot be disabled.
522 To compile this driver as a module, choose M here: the
523 module will be called sa1100_wdt.
526 tristate "Synopsys DesignWare watchdog"
530 Say Y here if to include support for the Synopsys DesignWare
531 watchdog timer found in many chips.
532 To compile this driver as a module, choose M here: the
533 module will be called dw_wdt.
535 config EP93XX_WATCHDOG
536 tristate "EP93xx Watchdog"
537 depends on ARCH_EP93XX || COMPILE_TEST
540 Say Y here if to include support for the watchdog timer
541 embedded in the Cirrus Logic EP93xx family of devices.
543 To compile this driver as a module, choose M here: the
544 module will be called ep93xx_wdt.
547 tristate "OMAP Watchdog"
548 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
551 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog.
552 Say 'Y' here to enable the
553 OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
555 config PNX4008_WATCHDOG
556 tristate "LPC32XX Watchdog"
557 depends on ARCH_LPC32XX || COMPILE_TEST
560 Say Y here if to include support for the watchdog timer
561 in the LPC32XX processor.
562 This driver can be built as a module by choosing M. The module
563 will be called pnx4008_wdt.
565 Say N if you are unsure.
567 config DAVINCI_WATCHDOG
568 tristate "DaVinci watchdog"
569 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
572 Say Y here if to include support for the watchdog timer
573 in the DaVinci DM644x/DM646x or Keystone processors.
574 To compile this driver as a module, choose M here: the
575 module will be called davinci_wdt.
577 NOTE: once enabled, this timer cannot be disabled.
578 Say N if you are unsure.
580 config K3_RTI_WATCHDOG
581 tristate "Texas Instruments K3 RTI watchdog"
582 depends on ARCH_K3 || COMPILE_TEST
585 Say Y here if you want to include support for the K3 watchdog
586 timer (RTI module) available in the K3 generation of processors.
588 config ORION_WATCHDOG
589 tristate "Orion watchdog"
590 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST
594 Say Y here if to include support for the watchdog timer
595 in the Marvell Orion5x and Kirkwood ARM SoCs.
596 To compile this driver as a module, choose M here: the
597 module will be called orion_wdt.
599 config RN5T618_WATCHDOG
600 tristate "Ricoh RN5T618 watchdog"
601 depends on MFD_RN5T618 || COMPILE_TEST
604 If you say yes here you get support for watchdog on the Ricoh
607 This driver can also be built as a module. If so, the module
608 will be called rn5t618_wdt.
610 config SUNXI_WATCHDOG
611 tristate "Allwinner SoCs watchdog support"
612 depends on ARCH_SUNXI || COMPILE_TEST
615 Say Y here to include support for the watchdog timer
617 To compile this driver as a module, choose M here: the
618 module will be called sunxi_wdt.
620 config NPCM7XX_WATCHDOG
621 tristate "Nuvoton NPCM750 watchdog"
622 depends on ARCH_NPCM || COMPILE_TEST
623 default y if ARCH_NPCM7XX
626 Say Y here to include Watchdog timer support for the
627 watchdog embedded into the NPCM7xx.
628 This watchdog is used to reset the system and thus cannot be
629 compiled as a module.
631 config TWL4030_WATCHDOG
632 tristate "TWL4030 Watchdog"
633 depends on TWL4030_CORE
636 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
637 watchdog timer support for TWL4030 chips.
639 config STMP3XXX_RTC_WATCHDOG
640 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
641 depends on RTC_DRV_STMP || COMPILE_TEST
644 Say Y here to include support for the watchdog timer inside
645 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
646 To compile this driver as a module, choose M here: the
647 module will be called stmp3xxx_rtc_wdt.
649 config TS4800_WATCHDOG
650 tristate "TS-4800 Watchdog"
651 depends on HAS_IOMEM && OF
652 depends on SOC_IMX51 || COMPILE_TEST
656 Technologic Systems TS-4800 has watchdog timer implemented in
657 an external FPGA. Say Y here if you want to support for the
658 watchdog timer on TS-4800 board.
660 config TS72XX_WATCHDOG
661 tristate "TS-72XX SBC Watchdog"
662 depends on MACH_TS72XX || COMPILE_TEST
665 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
666 watchdog timer implemented in a external CPLD chip. Say Y here
667 if you want to support for the watchdog timer on TS-72XX boards.
669 To compile this driver as a module, choose M here: the
670 module will be called ts72xx_wdt.
672 config MAX63XX_WATCHDOG
673 tristate "Max63xx watchdog"
677 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
679 config MAX77620_WATCHDOG
680 tristate "Maxim Max77620 Watchdog Timer"
681 depends on MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST
684 This is the driver for the Max77620 watchdog timer.
685 Say 'Y' here to enable the watchdog timer support for
686 MAX77620 chips. To compile this driver as a module,
687 choose M here: the module will be called max77620_wdt.
690 tristate "IMX2+ Watchdog"
691 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
695 This is the driver for the hardware watchdog
696 on the Freescale IMX2 and later processors.
697 If you have one of these processors and wish to have
698 watchdog support enabled, say Y, otherwise say N.
700 To compile this driver as a module, choose M here: the
701 module will be called imx2_wdt.
704 tristate "IMX SC Watchdog"
705 depends on HAVE_ARM_SMCCC
709 This is the driver for the system controller watchdog
710 on the NXP i.MX SoCs with system controller inside, the
711 watchdog driver will call ARM SMC API and trap into
712 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
713 will request system controller to execute the operations.
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 imx_sc_wdt.
721 tristate "IMX7ULP Watchdog"
722 depends on ARCH_MXC || COMPILE_TEST
725 This is the driver for the hardware watchdog on the Freescale
726 IMX7ULP and later processors. If you have one of these
727 processors and wish to have watchdog support enabled,
728 say Y, otherwise say N.
730 To compile this driver as a module, choose M here: the
731 module will be called imx7ulp_wdt.
733 config DB500_WATCHDOG
734 tristate "ST-Ericsson DB800 watchdog"
735 depends on MFD_DB8500_PRCMU
739 Say Y here to include Watchdog timer support for the watchdog
740 existing in the prcmu of ST-Ericsson DB8500 platform.
742 To compile this driver as a module, choose M here: the
743 module will be called db500_wdt.
746 tristate "Retu watchdog"
750 Retu watchdog driver for Nokia Internet Tablets (770, N800,
751 N810). At least on N800 the watchdog cannot be disabled, so
752 this driver is essential and you should enable it.
754 To compile this driver as a module, choose M here: the
755 module will be called retu_wdt.
758 tristate "MOXART watchdog"
759 depends on ARCH_MOXART || COMPILE_TEST
761 Say Y here to include Watchdog timer support for the watchdog
762 existing on the MOXA ART SoC series platforms.
764 To compile this driver as a module, choose M here: the
765 module will be called moxart_wdt.
767 config ST_LPC_WATCHDOG
768 tristate "STMicroelectronics LPC Watchdog"
769 depends on ARCH_STI || COMPILE_TEST
773 Say Y here to include STMicroelectronics Low Power Controller
774 (LPC) based Watchdog timer support.
776 To compile this driver as a module, choose M here: the
777 module will be called st_lpc_wdt.
779 config TEGRA_WATCHDOG
780 tristate "Tegra watchdog"
781 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
784 Say Y here to include support for the watchdog timer
785 embedded in NVIDIA Tegra SoCs.
787 To compile this driver as a module, choose M here: the
788 module will be called tegra_wdt.
791 tristate "QCOM watchdog"
793 depends on ARCH_QCOM || COMPILE_TEST
796 Say Y here to include Watchdog timer support for the watchdog found
797 on QCOM chipsets. Currently supported targets are the MSM8960,
798 APQ8064, and IPQ8064.
800 To compile this driver as a module, choose M here: the
801 module will be called qcom_wdt.
803 config MESON_GXBB_WATCHDOG
804 tristate "Amlogic Meson GXBB SoCs watchdog support"
805 depends on ARCH_MESON || COMPILE_TEST
808 Say Y here to include support for the watchdog timer
809 in Amlogic Meson GXBB SoCs.
810 To compile this driver as a module, choose M here: the
811 module will be called meson_gxbb_wdt.
813 config MESON_WATCHDOG
814 tristate "Amlogic Meson SoCs watchdog support"
815 depends on ARCH_MESON || COMPILE_TEST
818 Say Y here to include support for the watchdog timer
819 in Amlogic Meson SoCs.
820 To compile this driver as a module, choose M here: the
821 module will be called meson_wdt.
823 config MEDIATEK_WATCHDOG
824 tristate "Mediatek SoCs watchdog support"
825 depends on ARCH_MEDIATEK || COMPILE_TEST
826 default ARCH_MEDIATEK
828 select RESET_CONTROLLER
830 Say Y here to include support for the watchdog timer
832 To compile this driver as a module, choose M here: the
833 module will be called mtk_wdt.
835 config DIGICOLOR_WATCHDOG
836 tristate "Conexant Digicolor SoCs watchdog support"
837 depends on ARCH_DIGICOLOR || COMPILE_TEST
840 Say Y here to include support for the watchdog timer
841 in Conexant Digicolor SoCs.
842 To compile this driver as a module, choose M here: the
843 module will be called digicolor_wdt.
845 config ARM_SMC_WATCHDOG
846 tristate "ARM Secure Monitor Call based watchdog support"
847 depends on ARM || ARM64
849 depends on HAVE_ARM_SMCCC
852 Say Y here to include support for a watchdog timer
853 implemented by the EL3 Secure Monitor on ARM platforms.
854 Requires firmware support.
855 To compile this driver as a module, choose M here: the
856 module will be called arm_smc_wdt.
858 config LPC18XX_WATCHDOG
859 tristate "LPC18xx/43xx Watchdog"
860 depends on ARCH_LPC18XX || COMPILE_TEST
864 Say Y here if to include support for the watchdog timer
865 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
867 To compile this driver as a module, choose M here: the
868 module will be called lpc18xx_wdt.
871 tristate "Renesas WDT Watchdog"
872 depends on ARCH_RENESAS || COMPILE_TEST
875 This driver adds watchdog support for the integrated watchdogs in the
876 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
878 config RENESAS_RZAWDT
879 tristate "Renesas RZ/A WDT Watchdog"
880 depends on ARCH_RENESAS || COMPILE_TEST
883 This driver adds watchdog support for the integrated watchdogs in the
884 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
886 config RENESAS_RZN1WDT
887 tristate "Renesas RZ/N1 watchdog"
888 depends on ARCH_RENESAS || COMPILE_TEST
891 This driver adds watchdog support for the integrated watchdogs in the
892 Renesas RZ/N1 SoCs. These watchdogs can be used to reset a system.
894 config RENESAS_RZG2LWDT
895 tristate "Renesas RZ/G2L WDT Watchdog"
896 depends on ARCH_RENESAS || COMPILE_TEST
899 This driver adds watchdog support for the integrated watchdogs in the
900 Renesas RZ/G2L SoCs. These watchdogs can be used to reset a system.
902 config ASPEED_WATCHDOG
903 tristate "Aspeed BMC watchdog support"
904 depends on ARCH_ASPEED || COMPILE_TEST
907 Say Y here to include support for the watchdog timer
910 This driver is required to reboot the SoC.
912 To compile this driver as a module, choose M here: the
913 module will be called aspeed_wdt.
915 config STM32_WATCHDOG
916 tristate "STM32 Independent WatchDoG (IWDG) support"
917 depends on ARCH_STM32
921 Say Y here to include support for the watchdog timer
924 To compile this driver as a module, choose M here: the
925 module will be called stm32_iwdg.
927 config STPMIC1_WATCHDOG
928 tristate "STPMIC1 PMIC watchdog support"
929 depends on MFD_STPMIC1
932 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
933 If the watchdog timer expires, stpmic1 will shut down all its power
936 To compile this driver as a module, choose M here: the
937 module will be called spmic1_wdt.
939 config UNIPHIER_WATCHDOG
940 tristate "UniPhier watchdog support"
941 depends on ARCH_UNIPHIER || COMPILE_TEST
942 depends on OF && MFD_SYSCON
945 Say Y here to include support watchdog timer embedded
946 into the UniPhier system.
948 To compile this driver as a module, choose M here: the
949 module will be called uniphier_wdt.
951 config RTD119X_WATCHDOG
952 bool "Realtek RTD119x/RTD129x watchdog support"
953 depends on ARCH_REALTEK || COMPILE_TEST
958 Say Y here to include support for the watchdog timer in
959 Realtek RTD1295 SoCs.
961 config REALTEK_OTTO_WDT
962 tristate "Realtek Otto MIPS watchdog support"
963 depends on MACH_REALTEK_RTL || COMPILE_TEST
964 depends on COMMON_CLK
966 default MACH_REALTEK_RTL
968 Say Y here to include support for the watchdog timer on Realtek
969 RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout
970 notifications and system reset on timeout.
972 When built as a module this will be called realtek_otto_wdt.
975 tristate "Spreadtrum watchdog support"
976 depends on ARCH_SPRD || COMPILE_TEST
979 Say Y here to include watchdog timer supported
980 by Spreadtrum system.
982 config PM8916_WATCHDOG
983 tristate "QCOM PM8916 pmic watchdog"
984 depends on OF && MFD_SPMI_PMIC
987 Say Y here to include support watchdog timer embedded into the
990 config VISCONTI_WATCHDOG
991 tristate "Toshiba Visconti series watchdog support"
992 depends on ARCH_VISCONTI || COMPILE_TEST
995 Say Y here to include support for the watchdog timer in Toshiba
998 config MSC313E_WATCHDOG
999 tristate "MStar MSC313e watchdog"
1000 depends on ARCH_MSTARV7 || COMPILE_TEST
1001 select WATCHDOG_CORE
1003 Say Y here to include support for the Watchdog timer embedded
1004 into MStar MSC313e chips. This will reboot your system when the
1007 To compile this driver as a module, choose M here: the
1008 module will be called msc313e_wdt.
1010 config APPLE_WATCHDOG
1011 tristate "Apple SoC watchdog"
1012 depends on ARCH_APPLE || COMPILE_TEST
1013 select WATCHDOG_CORE
1015 Say Y here to include support for the Watchdog found in Apple
1016 SoCs such as the M1. Next to the common watchdog features this
1017 driver is also required in order to reboot these SoCs.
1019 To compile this driver as a module, choose M here: the
1020 module will be called apple_wdt.
1022 config SUNPLUS_WATCHDOG
1023 tristate "Sunplus watchdog support"
1024 depends on ARCH_SUNPLUS || COMPILE_TEST
1025 select WATCHDOG_CORE
1027 Say Y here to include support for the watchdog timer
1030 To compile this driver as a module, choose M here: the
1031 module will be called sunplus_wdt.
1033 # X86 (i386 + ia64 + x86_64) Architecture
1036 tristate "Acquire SBC Watchdog Timer"
1039 This is the driver for the hardware watchdog on Single Board
1040 Computers produced by Acquire Inc (and others). This watchdog
1041 simply watches your kernel to make sure it doesn't freeze, and if
1042 it does, it reboots your computer after a certain amount of time.
1044 To compile this driver as a module, choose M here: the
1045 module will be called acquirewdt.
1047 Most people will say N.
1049 config ADVANTECH_WDT
1050 tristate "Advantech SBC Watchdog Timer"
1053 If you are configuring a Linux kernel for the Advantech single-board
1054 computer, say `Y' here to support its built-in watchdog timer
1055 feature. More information can be found at
1056 <https://www.advantech.com.tw/products/>
1058 config ADVANTECH_EC_WDT
1059 tristate "Advantech Embedded Controller Watchdog Timer"
1062 This driver supports Advantech products with ITE based Embedded Controller.
1063 It does not support Advantech products with other ECs or without EC.
1066 tristate "ALi M1535 PMU Watchdog Timer"
1067 depends on X86 && PCI
1069 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1071 To compile this driver as a module, choose M here: the
1072 module will be called alim1535_wdt.
1074 Most people will say N.
1077 tristate "ALi M7101 PMU Computer Watchdog"
1080 This is the driver for the hardware watchdog on the ALi M7101 PMU
1081 as used in the x86 Cobalt servers and also found in some
1082 SPARC Netra servers too.
1084 To compile this driver as a module, choose M here: the
1085 module will be called alim7101_wdt.
1087 Most people will say N.
1090 tristate "WinSystems EBC-C384 Watchdog Timer"
1093 select WATCHDOG_CORE
1095 Enables watchdog timer support for the watchdog timer on the
1096 WinSystems EBC-C384 motherboard. The timeout may be configured via
1097 the timeout module parameter.
1100 tristate "Exar Watchdog Timer"
1102 select WATCHDOG_CORE
1104 Enables watchdog timer support for the watchdog timer present
1105 in some Exar/MaxLinear UART chips like the XR28V38x.
1107 To compile this driver as a module, choose M here: the
1108 module will be called exar_wdt.
1111 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1113 select WATCHDOG_CORE
1115 This is the driver for the hardware watchdog on the Fintek F71808E,
1116 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1117 F81866 Super I/O controllers.
1119 You can compile this driver directly into the kernel, or use
1120 it as a module. The module will be called f71808e_wdt.
1123 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1124 depends on X86 && PCI
1125 select WATCHDOG_CORE
1127 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1128 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1129 the machine after its expiration. The expiration time can be
1130 configured with the "heartbeat" parameter.
1132 To compile this driver as a module, choose M here: the
1133 module will be called sp5100_tco.
1136 tristate "AMD Geode CS5535/CS5536 Watchdog"
1137 depends on CS5535_MFGPT
1139 This driver enables a watchdog capability built into the
1140 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1141 processors. This watchdog watches your kernel to make sure
1142 it doesn't freeze, and if it does, it reboots your computer after
1143 a certain amount of time.
1145 You can compile this driver directly into the kernel, or use
1146 it as a module. The module will be called geodewdt.
1149 tristate "AMD Elan SC520 processor Watchdog"
1150 depends on MELAN || COMPILE_TEST
1152 This is the driver for the hardware watchdog built in to the
1153 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1154 This watchdog simply watches your kernel to make sure it doesn't
1155 freeze, and if it does, it reboots your computer after a certain
1158 You can compile this driver directly into the kernel, or use
1159 it as a module. The module will be called sc520_wdt.
1161 config SBC_FITPC2_WATCHDOG
1162 tristate "Compulab SBC-FITPC2 watchdog"
1165 This is the driver for the built-in watchdog timer on the fit-PC2,
1166 fit-PC2i, CM-iAM single-board computers made by Compulab.
1168 It's possible to enable the watchdog timer either from BIOS (F2) or
1170 When the "Watchdog Timer Value" is enabled one can set 31-255 seconds
1173 Entering BIOS setup temporarily disables watchdog operation regardless
1174 of current state, so system will not be restarted while user is in
1177 Once the watchdog is enabled the system will be restarted every
1178 "Watchdog Timer Value" period, so to prevent it user can restart or
1179 disable the watchdog.
1181 To compile this driver as a module, choose M here: the
1182 module will be called sbc_fitpc2_wdt.
1184 Most people will say N.
1187 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1190 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1191 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1192 information are at <http://www.eurotech.it/>.
1195 tristate "IB700 SBC Watchdog Timer"
1198 This is the driver for the hardware watchdog on the IB700 Single
1199 Board Computer produced by TMC Technology (www.tmc-uk.com). This
1200 watchdog simply watches your kernel to make sure it doesn't freeze,
1201 and if it does, it reboots your computer after a certain amount of time.
1203 This driver is like the WDT501 driver but for slightly different
1206 To compile this driver as a module, choose M here: the
1207 module will be called ib700wdt.
1209 Most people will say N.
1212 tristate "IBM Automatic Server Restart"
1215 This is the driver for the IBM Automatic Server Restart watchdog
1216 timer built-in into some eServer xSeries machines.
1218 To compile this driver as a module, choose M here: the
1219 module will be called ibmasr.
1222 tristate "ICP Single Board Computer Watchdog Timer"
1225 This is a driver for the hardware watchdog on the ICP Single
1226 Board Computer. This driver is working on (at least) the following
1227 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1229 To compile this driver as a module, choose M here: the
1230 module will be called wafer5823wdt.
1233 tristate "Intel 6300ESB Timer/Watchdog"
1235 select WATCHDOG_CORE
1237 Hardware driver for the watchdog timer built into the Intel
1238 6300ESB controller hub.
1240 To compile this driver as a module, choose M here: the
1241 module will be called i6300esb.
1244 tristate "Intel Atom E6xx Watchdog"
1245 depends on X86 && PCI
1246 select WATCHDOG_CORE
1250 Hardware driver for the watchdog timer built into the Intel
1251 Atom E6XX (TunnelCreek) processor.
1253 To compile this driver as a module, choose M here: the
1254 module will be called ie6xx_wdt.
1256 config INTEL_MID_WATCHDOG
1257 tristate "Intel MID Watchdog Timer"
1258 depends on X86_INTEL_MID
1259 select WATCHDOG_CORE
1261 Watchdog timer driver built into the Intel SCU for Intel MID
1264 This driver currently supports only the watchdog evolution
1265 implementation in SCU, available for Merrifield generation.
1267 To compile this driver as a module, choose M here.
1270 tristate "Intel TCO Timer/Watchdog"
1271 depends on (X86 || IA64) && PCI
1272 select WATCHDOG_CORE
1273 depends on I2C || I2C=n
1274 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1275 select LPC_ICH if !EXPERT
1276 select I2C_I801 if !EXPERT && I2C
1278 Hardware driver for the intel TCO timer based watchdog devices.
1279 These drivers are included in the Intel 82801 I/O Controller
1280 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1283 The TCO (Total Cost of Ownership) timer is a watchdog timer
1284 that will reboot the machine after its second expiration. The
1285 expiration time can be configured with the "heartbeat" parameter.
1287 On some motherboards the driver may fail to reset the chipset's
1288 NO_REBOOT flag which prevents the watchdog from rebooting the
1289 machine. If this is the case you will get a kernel message like
1290 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1292 To compile this driver as a module, choose M here: the
1293 module will be called iTCO_wdt.
1295 config ITCO_VENDOR_SUPPORT
1296 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1299 Add vendor specific support to the intel TCO timer based watchdog
1300 devices. At this moment we only have additional support for some
1301 SuperMicro Inc. motherboards.
1304 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1307 This is the driver for the built-in watchdog timer on the IT8712F
1308 Super I/0 chipset used on many motherboards.
1310 If the driver does not work, then make sure that the game port in
1311 the BIOS is enabled.
1313 To compile this driver as a module, choose M here: the
1314 module will be called it8712f_wdt.
1317 tristate "IT87 Watchdog Timer"
1319 select WATCHDOG_CORE
1321 This is the driver for the hardware watchdog on the ITE IT8607,
1322 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1323 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1324 IT8783 Super I/O chips.
1326 This watchdog simply watches your kernel to make sure it doesn't
1327 freeze, and if it does, it reboots your computer after a certain
1330 To compile this driver as a module, choose M here: the module will
1334 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1335 select WATCHDOG_CORE
1336 depends on (ARM64 || X86) && PCI
1338 A software monitoring watchdog and NMI handling driver. This driver
1339 will detect lockups and provide a stack trace. This is a driver that
1340 will only load on an HP ProLiant system with a minimum of iLO2 support.
1341 To compile this driver as a module, choose M here: the module will be
1344 config HPWDT_NMI_DECODING
1345 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1346 depends on X86 && HP_WATCHDOG
1349 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1350 "Generate NMI to System" virtual button. When an NMI is claimed
1351 by the driver, panic is called.
1354 tristate "Kontron COM Watchdog Timer"
1355 depends on MFD_KEMPLD
1356 select WATCHDOG_CORE
1358 Support for the PLD watchdog on some Kontron ETX and COMexpress
1359 (ETXexpress) modules
1361 This driver can also be built as a module. If so, the module will be
1365 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1368 This is a driver for National Semiconductor PC87307/PC97307 hardware
1369 watchdog cards as found on the SC1200. This watchdog is mainly used
1370 for power management purposes and can be used to power down the device
1371 during inactivity periods (includes interrupt activity monitoring).
1373 To compile this driver as a module, choose M here: the
1374 module will be called sc1200wdt.
1376 Most people will say N.
1379 tristate "National Semiconductor SCx200 Watchdog"
1380 depends on SCx200 && PCI
1382 Enable the built-in watchdog timer support on the National
1383 Semiconductor SCx200 processors.
1385 If compiled as a module, it will be called scx200_wdt.
1388 tristate "NS PC87413 watchdog"
1391 This is the driver for the hardware watchdog on the PC87413 chipset
1392 This watchdog simply watches your kernel to make sure it doesn't
1393 freeze, and if it does, it reboots your computer after a certain
1396 To compile this driver as a module, choose M here: the
1397 module will be called pc87413_wdt.
1399 Most people will say N.
1402 tristate "nVidia TCO Timer/Watchdog"
1403 depends on X86 && PCI
1405 Hardware driver for the TCO timer built into the nVidia Hub family
1406 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1407 watchdog timer that will reboot the machine after its second
1408 expiration. The expiration time can be configured with the
1409 "heartbeat" parameter.
1411 On some motherboards the driver may fail to reset the chipset's
1412 NO_REBOOT flag which prevents the watchdog from rebooting the
1413 machine. If this is the case you will get a kernel message like
1414 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1416 To compile this driver as a module, choose M here: the
1417 module will be called nv_tco.
1420 tristate "RDC R-321x SoC watchdog"
1421 depends on X86_RDC321X || COMPILE_TEST
1424 This is the driver for the built in hardware watchdog
1425 in the RDC R-321x SoC.
1427 To compile this driver as a module, choose M here: the
1428 module will be called rdc321x_wdt.
1431 tristate "SBC-60XX Watchdog Timer"
1434 This driver can be used with the watchdog timer found on some
1435 single board computers, namely the 6010 PII based computer.
1436 It may well work with other cards. It reads port 0x443 to enable
1437 and re-set the watchdog timer, and reads port 0x45 to disable
1438 the watchdog. If you have a card that behave in similar ways,
1439 you can probably make this driver work with your card as well.
1441 You can compile this driver directly into the kernel, or use
1442 it as a module. The module will be called sbc60xxwdt.
1445 tristate "SBC8360 Watchdog Timer"
1449 This is the driver for the hardware watchdog on the SBC8360 Single
1450 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1452 To compile this driver as a module, choose M here: the
1453 module will be called sbc8360.
1455 Most people will say N.
1458 tristate "SBC Nano 7240 Watchdog Timer"
1459 depends on X86_32 && !UML
1461 This is the driver for the hardware watchdog found on the IEI
1462 single board computers EPIC Nano 7240 (and likely others). This
1463 watchdog simply watches your kernel to make sure it doesn't freeze,
1464 and if it does, it reboots your computer after a certain amount of
1467 To compile this driver as a module, choose M here: the
1468 module will be called sbc7240_wdt.
1471 tristate "SMA CPU5 Watchdog"
1475 To compile this driver as a module, choose M here: the
1476 module will be called cpu5wdt.
1478 config SMSC_SCH311X_WDT
1479 tristate "SMSC SCH311X Watchdog Timer"
1482 This is the driver for the hardware watchdog timer on the
1483 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1484 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1487 To compile this driver as a module, choose M here: the
1488 module will be called sch311x_wdt.
1490 config SMSC37B787_WDT
1491 tristate "Winbond SMsC37B787 Watchdog Timer"
1494 This is the driver for the hardware watchdog component on the
1495 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1496 from Vision Systems and maybe others.
1498 This watchdog simply watches your kernel to make sure it doesn't
1499 freeze, and if it does, it reboots your computer after a certain
1502 Usually a userspace daemon will notify the kernel WDT driver that
1503 userspace is still alive, at regular intervals.
1505 To compile this driver as a module, choose M here: the
1506 module will be called smsc37b787_wdt.
1508 Most people will say N.
1511 tristate "TQ-Systems TQMX86 Watchdog Timer"
1513 select WATCHDOG_CORE
1515 This is the driver for the hardware watchdog timer in the TQMX86 IO
1516 controller found on some of their ComExpress Modules.
1518 To compile this driver as a module, choose M here; the module
1519 will be called tqmx86_wdt.
1521 Most people will say N.
1524 tristate "VIA Watchdog Timer"
1525 depends on X86 && PCI
1526 select WATCHDOG_CORE
1528 This is the driver for the hardware watchdog timer on VIA
1529 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1531 To compile this driver as a module, choose M here; the module
1532 will be called via_wdt.
1534 Most people will say N.
1537 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1539 select WATCHDOG_CORE
1541 This is the driver for the hardware watchdog on the following
1543 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1557 This watchdog simply watches your kernel to make sure it doesn't
1558 freeze, and if it does, it reboots your computer after a certain
1561 To compile this driver as a module, choose M here: the
1562 module will be called w83627hf_wdt.
1564 Most people will say N.
1567 tristate "W83877F (EMACS) Watchdog Timer"
1570 This is the driver for the hardware watchdog on the W83877F chipset
1571 as used in EMACS PC-104 motherboards (and likely others). This
1572 watchdog simply watches your kernel to make sure it doesn't freeze,
1573 and if it does, it reboots your computer after a certain amount of
1576 To compile this driver as a module, choose M here: the
1577 module will be called w83877f_wdt.
1579 Most people will say N.
1582 tristate "W83977F (PCM-5335) Watchdog Timer"
1585 This is the driver for the hardware watchdog on the W83977F I/O chip
1586 as used in AAEON's PCM-5335 SBC (and likely others). This
1587 watchdog simply watches your kernel to make sure it doesn't freeze,
1588 and if it does, it reboots your computer after a certain amount of
1591 To compile this driver as a module, choose M here: the
1592 module will be called w83977f_wdt.
1595 tristate "ZF MachZ Watchdog"
1598 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1599 N. This is the driver for the watchdog timer built-in on that
1600 processor using ZF-Logic interface. This watchdog simply watches
1601 your kernel to make sure it doesn't freeze, and if it does, it
1602 reboots your computer after a certain amount of time.
1604 To compile this driver as a module, choose M here: the
1605 module will be called machzwd.
1607 config SBC_EPX_C3_WATCHDOG
1608 tristate "Winsystems SBC EPX-C3 watchdog"
1611 This is the driver for the built-in watchdog timer on the EPX-C3
1612 Single-board computer made by Winsystems, Inc.
1614 *Note*: This hardware watchdog is not probeable and thus there
1615 is no way to know if writing to its IO address will corrupt
1616 your system or have any real effect. The only way to be sure
1617 that this driver does what you want is to make sure you
1618 are running it on an EPX-C3 from Winsystems with the watchdog
1619 timer at IO address 0x1ee and 0x1ef. It will write to both those
1620 IO ports. Basically, the assumption is made that if you compile
1621 this driver into your kernel and/or load it as a module, that you
1622 know what you are doing and that you are in fact running on an
1625 To compile this driver as a module, choose M here: the
1626 module will be called sbc_epx_c3.
1628 config INTEL_MEI_WDT
1629 tristate "Intel MEI iAMT Watchdog"
1630 depends on INTEL_MEI && X86
1631 select WATCHDOG_CORE
1633 A device driver for the Intel MEI iAMT watchdog.
1635 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1636 Whenever the OS hangs or crashes, iAMT will send an event
1637 to any subscriber to this event. The watchdog doesn't reset the
1640 To compile this driver as a module, choose M here:
1641 the module will be called mei_wdt.
1644 tristate "NI 903x/913x Watchdog"
1645 depends on X86 && ACPI
1646 select WATCHDOG_CORE
1648 This is the driver for the watchdog timer on the National Instruments
1649 903x/913x real-time controllers.
1651 To compile this driver as a module, choose M here: the module will be
1655 tristate "NIC7018 Watchdog"
1656 depends on X86 && ACPI
1657 select WATCHDOG_CORE
1659 Support for National Instruments NIC7018 Watchdog.
1661 To compile this driver as a module, choose M here: the module will be
1664 config SIEMENS_SIMATIC_IPC_WDT
1665 tristate "Siemens Simatic IPC Watchdog"
1666 depends on SIEMENS_SIMATIC_IPC
1667 select WATCHDOG_CORE
1670 This driver adds support for several watchdogs found in Industrial
1673 To compile this driver as a module, choose M here: the module will be
1674 called simatic-ipc-wdt.
1678 config M54xx_WATCHDOG
1679 tristate "MCF54xx watchdog support"
1682 To compile this driver as a module, choose M here: the
1683 module will be called m54xx_wdt.
1685 # MicroBlaze Architecture
1690 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1691 depends on ATH79 || (ARM && COMPILE_TEST)
1693 Hardware driver for the built-in watchdog timer on the Atheros
1694 AR71XX/AR724X/AR913X SoCs.
1697 tristate "Broadcom BCM47xx Watchdog Timer"
1698 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1699 select WATCHDOG_CORE
1701 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1704 tristate "IDT RC32434 SoC Watchdog Timer"
1705 depends on MIKROTIK_RB532
1707 Hardware driver for the IDT RC32434 SoC built-in
1710 To compile this driver as a module, choose M here: the
1711 module will be called rc32434_wdt.
1714 tristate "Indy/I2 Hardware Watchdog"
1715 depends on SGI_HAS_INDYDOG
1717 Hardware driver for the Indy's/I2's watchdog. This is a
1718 watchdog timer that will reboot the machine after a 60 second
1719 timer expired and no process has written to /dev/watchdog during
1723 tristate "Ingenic jz4740 SoC hardware watchdog"
1725 depends on COMMON_CLK
1726 select WATCHDOG_CORE
1729 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1732 tristate "MTX-1 Hardware Watchdog"
1733 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1735 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1736 will reboot the machine after a 100 seconds timer expired.
1739 tristate "Sibyte SoC hardware watchdog"
1742 Watchdog driver for the built in watchdog hardware in Sibyte
1743 SoC processors. There are apparently two watchdog timers
1744 on such processors; this driver supports only the first one,
1745 because currently Linux only supports exporting one watchdog
1748 To compile this driver as a loadable module, choose M here.
1749 The module will be called sb_wdog.
1752 tristate "TI AR7 Watchdog Timer"
1753 depends on AR7 || (MIPS && 32BIT && COMPILE_TEST)
1755 Hardware driver for the TI AR7 Watchdog Timer.
1758 tristate "Toshiba TXx9 Watchdog Timer"
1759 depends on CPU_TX49XX || (MIPS && COMPILE_TEST)
1760 select WATCHDOG_CORE
1762 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1765 tristate "Cavium OCTEON SOC family Watchdog Timer"
1766 depends on CAVIUM_OCTEON_SOC
1768 select WATCHDOG_CORE
1769 select EXPORT_UASM if OCTEON_WDT = m
1771 Hardware driver for OCTEON's on chip watchdog timer.
1772 Enables the watchdog for all cores running Linux. It
1773 installs a NMI handler and pokes the watchdog based on an
1774 interrupt. On first expiration of the watchdog, the
1775 interrupt handler pokes it. The second expiration causes an
1776 NMI that prints a message. The third expiration causes a
1779 When userspace has /dev/watchdog open, no poking is done
1780 from the first interrupt, it is then only poked when the
1784 tristate "Broadcom BCM2835 hardware watchdog"
1785 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1786 select WATCHDOG_CORE
1788 Watchdog driver for the built in watchdog hardware in Broadcom
1791 To compile this driver as a loadable module, choose M here.
1792 The module will be called bcm2835_wdt.
1795 tristate "BCM Kona Watchdog"
1796 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1797 select WATCHDOG_CORE
1799 Support for the watchdog timer on the following Broadcom BCM281xx
1800 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1803 Say 'Y' or 'M' here to enable the driver. The module will be called
1806 config BCM_KONA_WDT_DEBUG
1807 bool "DEBUGFS support for BCM Kona Watchdog"
1808 depends on BCM_KONA_WDT
1810 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1811 access to the driver's internal data structures as well as watchdog
1812 timer hardware registres.
1814 If in doubt, say 'N'.
1817 tristate "BCM63xx/BCM7038 Watchdog"
1818 select WATCHDOG_CORE
1819 depends on HAS_IOMEM
1820 depends on ARCH_BCMBCA || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST
1822 Watchdog driver for the built-in hardware in Broadcom 7038 and
1823 later SoCs used in set-top boxes. BCM7038 was made public
1824 during the 2004 CES, and since then, many Broadcom chips use this
1825 watchdog block, including some cable modem chips and DSL (63xx)
1829 tristate "Imagination Technologies PDC Watchdog Timer"
1830 depends on HAS_IOMEM
1831 depends on MIPS || COMPILE_TEST
1832 select WATCHDOG_CORE
1834 Driver for Imagination Technologies PowerDown Controller
1837 To compile this driver as a loadable module, choose M here.
1838 The module will be called imgpdc_wdt.
1841 tristate "Lantiq SoC watchdog"
1843 select WATCHDOG_CORE
1845 Hardware driver for the Lantiq SoC Watchdog Timer.
1847 config LOONGSON1_WDT
1848 tristate "Loongson1 SoC hardware watchdog"
1849 depends on MACH_LOONGSON32
1850 select WATCHDOG_CORE
1852 Hardware driver for the Loongson1 SoC Watchdog Timer.
1855 tristate "Ralink SoC watchdog"
1856 select WATCHDOG_CORE
1859 Hardware driver for the Ralink SoC Watchdog Timer.
1862 tristate "HPE GXP watchdog support"
1863 depends on ARCH_HPE_GXP
1864 select WATCHDOG_CORE
1866 Say Y here to include support for the watchdog timer
1869 To compile this driver as a module, choose M here.
1870 The module will be called gxp-wdt.
1873 tristate "Mediatek SoC watchdog"
1874 select WATCHDOG_CORE
1875 depends on SOC_MT7620 || SOC_MT7621
1877 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1880 tristate "Microchip PIC32 hardware watchdog"
1881 select WATCHDOG_CORE
1882 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1884 Watchdog driver for the built in watchdog hardware in a PIC32.
1886 Configuration bits must be set appropriately for the watchdog to be
1887 controlled by this driver.
1889 To compile this driver as a loadable module, choose M here.
1890 The module will be called pic32-wdt.
1893 tristate "Microchip PIC32 Deadman Timer"
1894 select WATCHDOG_CORE
1895 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1897 Watchdog driver for PIC32 instruction fetch counting timer. This
1898 specific timer is typically be used in mission critical and safety
1899 critical applications, where any single failure of the software
1900 functionality and sequencing must be detected.
1902 To compile this driver as a loadable module, choose M here.
1903 The module will be called pic32-dmt.
1905 # PARISC Architecture
1907 # POWERPC Architecture
1910 tristate "GE Watchdog Timer"
1913 Watchdog timer found in a number of GE single board computers.
1916 bool "MPC52xx Watchdog Timer"
1917 depends on PPC_MPC52xx || COMPILE_TEST
1919 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1922 tristate "MPC8xxx Platform Watchdog Timer"
1923 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1924 select WATCHDOG_CORE
1926 This driver is for a SoC level watchdog that exists on some
1927 Freescale PowerPC processors. So far this driver supports:
1932 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1935 tristate "PIKA FPGA Watchdog"
1936 depends on WARP || (PPC64 && COMPILE_TEST)
1939 This enables the watchdog in the PIKA FPGA. Currently used on
1943 tristate "PowerPC Book-E Watchdog Timer"
1944 depends on BOOKE || 4xx
1945 select WATCHDOG_CORE
1947 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1948 MPC85xx SOCs and the IBM PowerPC 440.
1950 Please see Documentation/watchdog/watchdog-api.rst for
1953 config BOOKE_WDT_DEFAULT_TIMEOUT
1954 int "PowerPC Book-E Watchdog Timer Default Timeout"
1955 depends on BOOKE_WDT
1956 default 38 if PPC_E500
1957 range 0 63 if PPC_E500
1958 default 3 if !PPC_E500
1959 range 0 3 if !PPC_E500
1961 Select the default watchdog timer period to be used by the PowerPC
1962 Book-E watchdog driver. A watchdog "event" occurs when the bit
1963 position represented by this number transitions from zero to one.
1965 For Freescale Book-E processors, this is a number between 0 and 63.
1966 For other Book-E processors, this is a number between 0 and 3.
1968 The value can be overridden by the wdt_period command-line parameter.
1971 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1972 select WATCHDOG_CORE
1973 depends on GPIOLIB || COMPILE_TEST
1975 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1977 The driver can also be built as a module. If so, the module will be
1980 If unsure select N here.
1982 # PPC64 Architecture
1985 tristate "POWER Architecture Platform Watchdog Timer"
1986 depends on PPC_PSERIES
1987 select WATCHDOG_CORE
1989 Driver for virtual watchdog timers provided by PAPR
1990 hypervisors (e.g. PowerVM, KVM).
1992 config WATCHDOG_RTAS
1993 tristate "RTAS watchdog"
1996 This driver adds watchdog support for the RTAS watchdog.
1998 To compile this driver as a module, choose M here. The module
1999 will be called wdrtas.
2003 config DIAG288_WATCHDOG
2004 tristate "System z diag288 Watchdog"
2006 select WATCHDOG_CORE
2008 IBM s/390 and zSeries machines running under z/VM 5.1 or later
2009 provide a virtual watchdog timer to their guest that cause a
2010 user define Control Program command to be executed after a
2012 LPAR provides a very similar interface. This driver handles
2015 To compile this driver as a module, choose M here. The module
2016 will be called diag288_wdt.
2018 # SUPERH (sh + sh64) Architecture
2021 tristate "SuperH Watchdog"
2022 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
2023 select WATCHDOG_CORE
2025 This driver adds watchdog support for the integrated watchdog in the
2026 SuperH processors. If you have one of these processors and wish
2027 to have watchdog support enabled, say Y, otherwise say N.
2029 As a side note, saying Y here will automatically boost HZ to 1000
2030 so that the timer has a chance to clear the overflow counter. On
2031 slower systems (such as the SH-2 and SH-3) this will likely yield
2032 some performance issues. As such, the WDT should be avoided here
2033 unless it is absolutely necessary.
2035 To compile this driver as a module, choose M here: the
2036 module will be called shwdt.
2038 # SPARC Architecture
2040 # SPARC64 Architecture
2042 config WATCHDOG_CP1XXX
2043 tristate "CP1XXX Hardware Watchdog support"
2044 depends on SPARC64 && PCI
2046 This is the driver for the hardware watchdog timers present on
2047 Sun Microsystems CompactPCI models CP1400 and CP1500.
2049 To compile this driver as a module, choose M here: the
2050 module will be called cpwatchdog.
2052 If you do not have a CompactPCI model CP1400 or CP1500, or
2053 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2054 you should say N to this option.
2057 tristate "RIO Hardware Watchdog support"
2058 depends on SPARC64 && PCI
2060 Say Y here to support the hardware watchdog capability on Sun RIO
2061 machines. The watchdog timeout period is normally one minute but
2062 can be changed with a boot-time parameter.
2064 config WATCHDOG_SUN4V
2065 tristate "Sun4v Watchdog support"
2066 select WATCHDOG_CORE
2069 Say Y here to support the hypervisor watchdog capability embedded
2070 in the SPARC sun4v architecture.
2072 To compile this driver as a module, choose M here. The module will
2073 be called sun4v_wdt.
2075 # XTENSA Architecture
2080 tristate "Xen Watchdog support"
2082 select WATCHDOG_CORE
2084 Say Y here to support the hypervisor watchdog capability provided
2085 by Xen 4.0 and newer. The watchdog timeout period is normally one
2086 minute but can be changed with a boot-time parameter.
2089 tristate "UML watchdog"
2090 depends on UML || COMPILE_TEST
2093 # ISA-based Watchdog Cards
2096 comment "ISA-based Watchdog Cards"
2100 tristate "Berkshire Products ISA-PC Watchdog"
2103 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2104 This card simply watches your kernel to make sure it doesn't freeze,
2105 and if it does, it reboots your computer after a certain amount of
2106 time. This driver is like the WDT501 driver but for different
2107 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>.
2108 The PC watchdog cards can be ordered from <http://www.berkprod.com/>.
2110 To compile this driver as a module, choose M here: the
2111 module will be called pcwd.
2113 Most people will say N.
2116 tristate "Mixcom Watchdog"
2119 This is a driver for the Mixcom hardware watchdog cards. This
2120 watchdog simply watches your kernel to make sure it doesn't freeze,
2121 and if it does, it reboots your computer after a certain amount of
2124 To compile this driver as a module, choose M here: the
2125 module will be called mixcomwd.
2127 Most people will say N.
2130 tristate "WDT Watchdog timer"
2133 If you have a WDT500P or WDT501P watchdog board, say Y here,
2134 otherwise N. It is not possible to probe for this board, which means
2135 that you have to inform the kernel about the IO port and IRQ that
2136 is needed (you can do this via the io and irq parameters)
2138 To compile this driver as a module, choose M here: the
2139 module will be called wdt.
2142 # PCI-based Watchdog Cards
2145 comment "PCI-based Watchdog Cards"
2148 config PCIPCWATCHDOG
2149 tristate "Berkshire Products PCI-PC Watchdog"
2152 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2153 This card simply watches your kernel to make sure it doesn't freeze,
2154 and if it does, it reboots your computer after a certain amount of
2155 time. The card can also monitor the internal temperature of the PC.
2156 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2158 To compile this driver as a module, choose M here: the
2159 module will be called pcwd_pci.
2161 Most people will say N.
2164 tristate "PCI-WDT500/501 Watchdog timer"
2167 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2169 If you have a PCI-WDT501 watchdog board then you can enable the
2170 temperature sensor by setting the type parameter to 501.
2172 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2173 can do this via the tachometer parameter. Only do this if you have a
2174 fan tachometer actually set up.
2176 To compile this driver as a module, choose M here: the
2177 module will be called wdt_pci.
2180 # USB-based Watchdog Cards
2183 comment "USB-based Watchdog Cards"
2186 config USBPCWATCHDOG
2187 tristate "Berkshire Products USB-PC Watchdog"
2190 This is the driver for the Berkshire Products USB-PC Watchdog card.
2191 This card simply watches your kernel to make sure it doesn't freeze,
2192 and if it does, it reboots your computer after a certain amount of
2193 time. The card can also monitor the internal temperature of the PC.
2194 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2196 To compile this driver as a module, choose M here: the
2197 module will be called pcwd_usb.
2199 Most people will say N.
2201 config KEEMBAY_WATCHDOG
2202 tristate "Intel Keem Bay SoC non-secure watchdog"
2203 depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
2204 select WATCHDOG_CORE
2206 This option enable support for an In-secure watchdog timer driver for
2207 Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every
2208 count unit. An interrupt will be triggered, when the count crosses
2209 the threshold configured in the register.
2211 To compile this driver as a module, choose M here: the
2212 module will be called keembay_wdt.