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 <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can
26 also monitor NFS connections and can reboot the machine when the process
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 comment "Watchdog Pretimeout Governors"
78 config WATCHDOG_PRETIMEOUT_GOV
79 bool "Enable watchdog pretimeout governors"
80 depends on WATCHDOG_CORE
82 The option allows to select watchdog pretimeout governors.
84 config WATCHDOG_PRETIMEOUT_GOV_SEL
86 depends on WATCHDOG_PRETIMEOUT_GOV
88 select WATCHDOG_PRETIMEOUT_GOV_PANIC if WATCHDOG_PRETIMEOUT_GOV_NOOP=n
90 if WATCHDOG_PRETIMEOUT_GOV
92 config WATCHDOG_PRETIMEOUT_GOV_NOOP
93 tristate "Noop watchdog pretimeout governor"
94 depends on WATCHDOG_CORE
97 Noop watchdog pretimeout governor, only an informational
98 message is added to kernel log buffer.
100 config WATCHDOG_PRETIMEOUT_GOV_PANIC
101 tristate "Panic watchdog pretimeout governor"
102 depends on WATCHDOG_CORE
103 default WATCHDOG_CORE
105 Panic watchdog pretimeout governor, on watchdog pretimeout
106 event put the kernel into panic.
109 prompt "Default Watchdog Pretimeout Governor"
110 default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
112 This option selects a default watchdog pretimeout governor.
113 The governor takes its action, if a watchdog is capable
114 to report a pretimeout event.
116 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP
118 depends on WATCHDOG_PRETIMEOUT_GOV_NOOP
120 Use noop watchdog pretimeout governor by default. If noop
121 governor is selected by a user, write a short message to
122 the kernel log buffer and don't do any system changes.
124 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
126 depends on WATCHDOG_PRETIMEOUT_GOV_PANIC
128 Use panic watchdog pretimeout governor by default, if
129 a watchdog pretimeout event happens, consider that
130 a watchdog feeder is dead and reboot is unavoidable.
134 endif # WATCHDOG_PRETIMEOUT_GOV
137 # General Watchdog drivers
140 comment "Watchdog Device Drivers"
142 # Architecture Independent
145 tristate "Software watchdog"
148 A software monitoring watchdog. This will fail to reboot your system
149 from some situations that the hardware watchdog will recover
150 from. Equally it's a lot cheaper to install.
152 To compile this driver as a module, choose M here: the
153 module will be called softdog.
155 config SOFT_WATCHDOG_PRETIMEOUT
156 bool "Software watchdog pretimeout governor support"
157 depends on SOFT_WATCHDOG && WATCHDOG_PRETIMEOUT_GOV
159 Enable this if you want to use pretimeout governors with the software
160 watchdog. Be aware that governors might affect the watchdog because it
161 is purely software, e.g. the panic governor will stall it!
163 config BD70528_WATCHDOG
164 tristate "ROHM BD70528 PMIC Watchdog"
165 depends on MFD_ROHM_BD70528
168 Support for the watchdog in the ROHM BD70528 PMIC. Watchdog trigger
171 Say Y here to include support for the ROHM BD70528 watchdog.
172 Alternatively say M to compile the driver as a module,
173 which will be called bd70528_wdt.
175 config DA9052_WATCHDOG
176 tristate "Dialog DA9052 Watchdog"
177 depends on PMIC_DA9052 || COMPILE_TEST
180 Support for the watchdog in the DA9052 PMIC. Watchdog trigger
183 Say Y here to include support for the DA9052 watchdog.
184 Alternatively say M to compile the driver as a module,
185 which will be called da9052_wdt.
187 config DA9055_WATCHDOG
188 tristate "Dialog Semiconductor DA9055 Watchdog"
189 depends on MFD_DA9055 || COMPILE_TEST
192 If you say yes here you get support for watchdog on the Dialog
193 Semiconductor DA9055 PMIC.
195 This driver can also be built as a module. If so, the module
196 will be called da9055_wdt.
198 config DA9063_WATCHDOG
199 tristate "Dialog DA9063 Watchdog"
200 depends on MFD_DA9063 || COMPILE_TEST
203 Support for the watchdog in the DA9063 PMIC.
205 This driver can be built as a module. The module name is da9063_wdt.
207 config DA9062_WATCHDOG
208 tristate "Dialog DA9062/61 Watchdog"
209 depends on MFD_DA9062 || COMPILE_TEST
213 Support for the watchdog in the DA9062 and DA9061 PMICs.
215 This driver can be built as a module. The module name is da9062_wdt.
218 tristate "Watchdog device controlled through GPIO-line"
222 If you say yes here you get support for watchdog device
223 controlled through GPIO-line.
225 config GPIO_WATCHDOG_ARCH_INITCALL
226 bool "Register the watchdog as early as possible"
227 depends on GPIO_WATCHDOG=y
229 In some situations, the default initcall level (module_init)
230 in not early enough in the boot process to avoid the watchdog
232 If you say yes here, the initcall level would be raised to
236 config MENF21BMC_WATCHDOG
237 tristate "MEN 14F021P00 BMC Watchdog"
238 depends on MFD_MENF21BMC || COMPILE_TEST
242 Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
244 This driver can also be built as a module. If so the module
245 will be called menf21bmc_wdt.
247 config MENZ069_WATCHDOG
248 tristate "MEN 16Z069 Watchdog"
252 Say Y here to include support for the MEN 16Z069 Watchdog.
254 This driver can also be built as a module. If so the module
255 will be called menz069_wdt.
257 config TANGOX_WATCHDOG
258 tristate "Sigma Designs SMP86xx/SMP87xx watchdog"
260 depends on ARCH_TANGO || COMPILE_TEST
263 Support for the watchdog in Sigma Designs SMP86xx (tango3)
264 and SMP87xx (tango4) family chips.
266 This driver can be built as a module. The module name is tangox_wdt.
269 tristate "ACPI Watchdog Action Table (WDAT)"
274 This driver adds support for systems with ACPI Watchdog Action
275 Table (WDAT) table. Servers typically have this but it can be
276 found on some desktop machines as well. This driver will take
277 over the native iTCO watchdog driver found on many Intel CPUs.
279 To compile this driver as module, choose M here: the module will
282 config WM831X_WATCHDOG
283 tristate "WM831x watchdog"
284 depends on MFD_WM831X
287 Support for the watchdog in the WM831x AudioPlus PMICs. When
288 the watchdog triggers the system will be reset.
290 config WM8350_WATCHDOG
291 tristate "WM8350 watchdog"
292 depends on MFD_WM8350
295 Support for the watchdog in the WM8350 AudioPlus PMIC. When
296 the watchdog triggers the system will be reset.
298 config XILINX_WATCHDOG
299 tristate "Xilinx Watchdog timer"
303 Watchdog driver for the xps_timebase_wdt ip core.
305 To compile this driver as a module, choose M here: the
306 module will be called of_xilinx_wdt.
308 config ZIIRAVE_WATCHDOG
309 tristate "Zodiac RAVE Watchdog Timer"
313 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
316 To compile this driver as a module, choose M here: the
317 module will be called ziirave_wdt.
319 config RAVE_SP_WATCHDOG
320 tristate "RAVE SP Watchdog timer"
321 depends on RAVE_SP_CORE
322 depends on NVMEM || !NVMEM
325 Support for the watchdog on RAVE SP device.
328 tristate "Mellanox Watchdog"
329 depends on MELLANOX_PLATFORM
333 This is the driver for the hardware watchdog on Mellanox systems.
334 If you are going to use it, say Y here, otherwise N.
335 This driver can be used together with the watchdog daemon.
336 It can also watch your kernel to make sure it doesn't freeze,
337 and if it does, it reboots your system after a certain amount of
340 To compile this driver as a module, choose M here: the
341 module will be called mlx-wdt.
343 config SL28CPLD_WATCHDOG
344 tristate "Kontron sl28cpld Watchdog"
345 depends on MFD_SL28CPLD || COMPILE_TEST
348 Say Y here to include support for the watchdog timer
349 on the Kontron sl28 CPLD.
351 To compile this driver as a module, choose M here: the
352 module will be called sl28cpld_wdt.
358 config ARM_SP805_WATCHDOG
359 tristate "ARM SP805 Watchdog"
360 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
363 ARM Primecell SP805 Watchdog timer. This will reboot your system when
364 the timeout is reached.
366 config ARM_SBSA_WATCHDOG
367 tristate "ARM SBSA Generic Watchdog"
369 depends on ARM_ARCH_TIMER
372 ARM SBSA Generic Watchdog has two stage timeouts:
373 the first signal (WS0) is for alerting the system by interrupt,
374 the second one (WS1) is a real hardware reset.
375 More details: ARM DEN0029B - Server Base System Architecture (SBSA)
377 This driver can operate ARM SBSA Generic Watchdog as a single stage
378 or a two stages watchdog, it depends on the module parameter "action".
380 Note: the maximum timeout in the two stages mode is half of that in
381 the single stage mode.
383 To compile this driver as module, choose M here: The module
384 will be called sbsa_gwdt.
386 config ARMADA_37XX_WATCHDOG
387 tristate "Armada 37xx watchdog"
388 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 reboot your
405 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
480 Say Y here if to include support for the watchdog timer
481 in the Intel IXP4xx network processors. This driver can
482 be built as a module by choosing M. The module will
483 be called ixp4xx_wdt.
485 Note: The internal IXP4xx watchdog does a soft CPU reset
486 which doesn't reset any peripherals. There are circumstances
487 where the watchdog will fail to reset the board correctly
488 (e.g., if the boot ROM is in an unreadable state).
490 Say N if you are unsure.
492 config S3C2410_WATCHDOG
493 tristate "S3C2410 Watchdog"
494 depends on ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || \
497 select MFD_SYSCON if ARCH_EXYNOS
499 Watchdog timer block in the Samsung SoCs. This will reboot
500 the system when the timer expires with the watchdog enabled.
502 The driver is limited by the speed of the system's PCLK
503 signal, so with reasonably fast systems (PCLK around 50-66MHz)
504 then watchdog intervals of over approximately 20seconds are
507 The driver can be built as a module by choosing M, and will
508 be called s3c2410_wdt
510 config SA1100_WATCHDOG
511 tristate "SA1100/PXA2xx watchdog"
512 depends on ARCH_SA1100 || ARCH_PXA
514 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
515 reboot your system when timeout is reached.
517 NOTE: once enabled, this timer cannot be disabled.
519 To compile this driver as a module, choose M here: the
520 module will be called sa1100_wdt.
523 tristate "Synopsys DesignWare watchdog"
527 Say Y here if to include support for the Synopsys DesignWare
528 watchdog timer found in many chips.
529 To compile this driver as a module, choose M here: the
530 module will be called dw_wdt.
532 config EP93XX_WATCHDOG
533 tristate "EP93xx Watchdog"
534 depends on ARCH_EP93XX || COMPILE_TEST
537 Say Y here if to include support for the watchdog timer
538 embedded in the Cirrus Logic EP93xx family of devices.
540 To compile this driver as a module, choose M here: the
541 module will be called ep93xx_wdt.
544 tristate "OMAP Watchdog"
545 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
548 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog. Say 'Y'
549 here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
551 config PNX4008_WATCHDOG
552 tristate "LPC32XX Watchdog"
553 depends on ARCH_LPC32XX || COMPILE_TEST
556 Say Y here if to include support for the watchdog timer
557 in the LPC32XX processor.
558 This driver can be built as a module by choosing M. The module
559 will be called pnx4008_wdt.
561 Say N if you are unsure.
564 tristate "IOP Watchdog"
565 depends on ARCH_IOP13XX
566 select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X)
568 Say Y here if to include support for the watchdog timer
569 in the Intel IOP3XX & IOP13XX I/O Processors. This driver can
570 be built as a module by choosing M. The module will
573 Note: The IOP13XX watchdog does an Internal Bus Reset which will
574 affect both cores and the peripherals of the IOP. The ATU-X
575 and/or ATUe configuration registers will remain intact, but if
576 operating as an Root Complex and/or Central Resource, the PCI-X
577 and/or PCIe busses will also be reset. THIS IS A VERY BIG HAMMER.
579 config DAVINCI_WATCHDOG
580 tristate "DaVinci watchdog"
581 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
584 Say Y here if to include support for the watchdog timer
585 in the DaVinci DM644x/DM646x or Keystone processors.
586 To compile this driver as a module, choose M here: the
587 module will be called davinci_wdt.
589 NOTE: once enabled, this timer cannot be disabled.
590 Say N if you are unsure.
592 config K3_RTI_WATCHDOG
593 tristate "Texas Instruments K3 RTI watchdog"
594 depends on ARCH_K3 || COMPILE_TEST
597 Say Y here if you want to include support for the K3 watchdog
598 timer (RTI module) available in the K3 generation of processors.
600 config ORION_WATCHDOG
601 tristate "Orion watchdog"
602 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || (COMPILE_TEST && !ARCH_EBSA110)
606 Say Y here if to include support for the watchdog timer
607 in the Marvell Orion5x and Kirkwood ARM SoCs.
608 To compile this driver as a module, choose M here: the
609 module will be called orion_wdt.
611 config RN5T618_WATCHDOG
612 tristate "Ricoh RN5T618 watchdog"
613 depends on MFD_RN5T618 || COMPILE_TEST
616 If you say yes here you get support for watchdog on the Ricoh
619 This driver can also be built as a module. If so, the module
620 will be called rn5t618_wdt.
622 config SUNXI_WATCHDOG
623 tristate "Allwinner SoCs watchdog support"
624 depends on ARCH_SUNXI || COMPILE_TEST
627 Say Y here to include support for the watchdog timer
629 To compile this driver as a module, choose M here: the
630 module will be called sunxi_wdt.
632 config COH901327_WATCHDOG
633 bool "ST-Ericsson COH 901 327 watchdog"
634 depends on ARCH_U300 || (ARM && COMPILE_TEST)
635 default y if MACH_U300
638 Say Y here to include Watchdog timer support for the
639 watchdog embedded into the ST-Ericsson U300 series platforms.
640 This watchdog is used to reset the system and thus cannot be
641 compiled as a module.
643 config NPCM7XX_WATCHDOG
644 tristate "Nuvoton NPCM750 watchdog"
645 depends on ARCH_NPCM || COMPILE_TEST
646 default y if ARCH_NPCM7XX
649 Say Y here to include Watchdog timer support for the
650 watchdog embedded into the NPCM7xx.
651 This watchdog is used to reset the system and thus cannot be
652 compiled as a module.
654 config TWL4030_WATCHDOG
655 tristate "TWL4030 Watchdog"
656 depends on TWL4030_CORE
659 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
660 watchdog timer support for TWL4030 chips.
662 config STMP3XXX_RTC_WATCHDOG
663 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
664 depends on RTC_DRV_STMP || COMPILE_TEST
667 Say Y here to include support for the watchdog timer inside
668 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
669 To compile this driver as a module, choose M here: the
670 module will be called stmp3xxx_rtc_wdt.
672 config TS4800_WATCHDOG
673 tristate "TS-4800 Watchdog"
674 depends on HAS_IOMEM && OF
675 depends on SOC_IMX51 || COMPILE_TEST
679 Technologic Systems TS-4800 has watchdog timer implemented in
680 an external FPGA. Say Y here if you want to support for the
681 watchdog timer on TS-4800 board.
683 config TS72XX_WATCHDOG
684 tristate "TS-72XX SBC Watchdog"
685 depends on MACH_TS72XX || COMPILE_TEST
688 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
689 watchdog timer implemented in a external CPLD chip. Say Y here
690 if you want to support for the watchdog timer on TS-72XX boards.
692 To compile this driver as a module, choose M here: the
693 module will be called ts72xx_wdt.
695 config MAX63XX_WATCHDOG
696 tristate "Max63xx watchdog"
700 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
702 config MAX77620_WATCHDOG
703 tristate "Maxim Max77620 Watchdog Timer"
704 depends on MFD_MAX77620 || COMPILE_TEST
707 This is the driver for the Max77620 watchdog timer.
708 Say 'Y' here to enable the watchdog timer support for
709 MAX77620 chips. To compile this driver as a module,
710 choose M here: the module will be called max77620_wdt.
713 tristate "IMX2+ Watchdog"
714 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
718 This is the driver for the hardware watchdog
719 on the Freescale IMX2 and later processors.
720 If you have one of these processors and wish to have
721 watchdog support enabled, say Y, otherwise say N.
723 To compile this driver as a module, choose M here: the
724 module will be called imx2_wdt.
727 tristate "IMX SC Watchdog"
728 depends on HAVE_ARM_SMCCC
732 This is the driver for the system controller watchdog
733 on the NXP i.MX SoCs with system controller inside, the
734 watchdog driver will call ARM SMC API and trap into
735 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
736 will request system controller to execute the operations.
737 If you have one of these processors and wish to have
738 watchdog support enabled, say Y, otherwise say N.
740 To compile this driver as a module, choose M here: the
741 module will be called imx_sc_wdt.
744 tristate "IMX7ULP Watchdog"
745 depends on ARCH_MXC || COMPILE_TEST
748 This is the driver for the hardware watchdog on the Freescale
749 IMX7ULP and later processors. If you have one of these
750 processors and wish to have watchdog support enabled,
751 say Y, otherwise say N.
753 To compile this driver as a module, choose M here: the
754 module will be called imx7ulp_wdt.
756 config UX500_WATCHDOG
757 tristate "ST-Ericsson Ux500 watchdog"
758 depends on MFD_DB8500_PRCMU
762 Say Y here to include Watchdog timer support for the watchdog
763 existing in the prcmu of ST-Ericsson Ux500 series platforms.
765 To compile this driver as a module, choose M here: the
766 module will be called ux500_wdt.
769 tristate "Retu watchdog"
773 Retu watchdog driver for Nokia Internet Tablets (770, N800,
774 N810). At least on N800 the watchdog cannot be disabled, so
775 this driver is essential and you should enable it.
777 To compile this driver as a module, choose M here: the
778 module will be called retu_wdt.
781 tristate "MOXART watchdog"
782 depends on ARCH_MOXART || COMPILE_TEST
784 Say Y here to include Watchdog timer support for the watchdog
785 existing on the MOXA ART SoC series platforms.
787 To compile this driver as a module, choose M here: the
788 module will be called moxart_wdt.
790 config SIRFSOC_WATCHDOG
791 tristate "SiRFSOC watchdog"
792 depends on ARCH_SIRF || COMPILE_TEST
796 Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When
797 the watchdog triggers the system will be reset.
799 config ST_LPC_WATCHDOG
800 tristate "STMicroelectronics LPC Watchdog"
801 depends on ARCH_STI || COMPILE_TEST
805 Say Y here to include STMicroelectronics Low Power Controller
806 (LPC) based Watchdog timer support.
808 To compile this driver as a module, choose M here: the
809 module will be called st_lpc_wdt.
811 config TEGRA_WATCHDOG
812 tristate "Tegra watchdog"
813 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
816 Say Y here to include support for the watchdog timer
817 embedded in NVIDIA Tegra SoCs.
819 To compile this driver as a module, choose M here: the
820 module will be called tegra_wdt.
823 tristate "QCOM watchdog"
825 depends on ARCH_QCOM || COMPILE_TEST
828 Say Y here to include Watchdog timer support for the watchdog found
829 on QCOM chipsets. Currently supported targets are the MSM8960,
830 APQ8064, and IPQ8064.
832 To compile this driver as a module, choose M here: the
833 module will be called qcom_wdt.
835 config MESON_GXBB_WATCHDOG
836 tristate "Amlogic Meson GXBB SoCs watchdog support"
837 depends on ARCH_MESON || COMPILE_TEST
840 Say Y here to include support for the watchdog timer
841 in Amlogic Meson GXBB SoCs.
842 To compile this driver as a module, choose M here: the
843 module will be called meson_gxbb_wdt.
845 config MESON_WATCHDOG
846 tristate "Amlogic Meson SoCs watchdog support"
847 depends on ARCH_MESON || COMPILE_TEST
850 Say Y here to include support for the watchdog timer
851 in Amlogic Meson SoCs.
852 To compile this driver as a module, choose M here: the
853 module will be called meson_wdt.
855 config MEDIATEK_WATCHDOG
856 tristate "Mediatek SoCs watchdog support"
857 depends on ARCH_MEDIATEK || COMPILE_TEST
859 select RESET_CONTROLLER
861 Say Y here to include support for the watchdog timer
863 To compile this driver as a module, choose M here: the
864 module will be called mtk_wdt.
866 config DIGICOLOR_WATCHDOG
867 tristate "Conexant Digicolor SoCs watchdog support"
868 depends on ARCH_DIGICOLOR || COMPILE_TEST
871 Say Y here to include support for the watchdog timer
872 in Conexant Digicolor SoCs.
873 To compile this driver as a module, choose M here: the
874 module will be called digicolor_wdt.
876 config ARM_SMC_WATCHDOG
877 tristate "ARM Secure Monitor Call based watchdog support"
878 depends on ARM || ARM64
880 depends on HAVE_ARM_SMCCC
883 Say Y here to include support for a watchdog timer
884 implemented by the EL3 Secure Monitor on ARM platforms.
885 Requires firmware support.
886 To compile this driver as a module, choose M here: the
887 module will be called arm_smc_wdt.
889 config LPC18XX_WATCHDOG
890 tristate "LPC18xx/43xx Watchdog"
891 depends on ARCH_LPC18XX || COMPILE_TEST
895 Say Y here if to include support for the watchdog timer
896 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
898 To compile this driver as a module, choose M here: the
899 module will be called lpc18xx_wdt.
901 config ATLAS7_WATCHDOG
902 tristate "CSRatlas7 watchdog"
903 depends on ARCH_ATLAS7 || COMPILE_TEST
905 Say Y here to include Watchdog timer support for the watchdog
906 existing on the CSRatlas7 series platforms.
908 To compile this driver as a module, choose M here: the
909 module will be called atlas7_wdt.
912 tristate "Renesas WDT Watchdog"
913 depends on ARCH_RENESAS || COMPILE_TEST
916 This driver adds watchdog support for the integrated watchdogs in the
917 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
919 config RENESAS_RZAWDT
920 tristate "Renesas RZ/A WDT Watchdog"
921 depends on ARCH_RENESAS || COMPILE_TEST
924 This driver adds watchdog support for the integrated watchdogs in the
925 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
927 config ASPEED_WATCHDOG
928 tristate "Aspeed BMC watchdog support"
929 depends on ARCH_ASPEED || COMPILE_TEST
932 Say Y here to include support for the watchdog timer
935 This driver is required to reboot the SoC.
937 To compile this driver as a module, choose M here: the
938 module will be called aspeed_wdt.
940 config ZX2967_WATCHDOG
941 tristate "ZTE zx2967 SoCs watchdog support"
945 Say Y here to include support for the watchdog timer
947 To compile this driver as a module, choose M here: the
948 module will be called zx2967_wdt.
950 config STM32_WATCHDOG
951 tristate "STM32 Independent WatchDoG (IWDG) support"
952 depends on ARCH_STM32
956 Say Y here to include support for the watchdog timer
959 To compile this driver as a module, choose M here: the
960 module will be called stm32_iwdg.
962 config STPMIC1_WATCHDOG
963 tristate "STPMIC1 PMIC watchdog support"
964 depends on MFD_STPMIC1
967 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
968 If the watchdog timer expires, stpmic1 will shut down all its power
971 To compile this driver as a module, choose M here: the
972 module will be called spmic1_wdt.
974 config UNIPHIER_WATCHDOG
975 tristate "UniPhier watchdog support"
976 depends on ARCH_UNIPHIER || COMPILE_TEST
977 depends on OF && MFD_SYSCON
980 Say Y here to include support watchdog timer embedded
981 into the UniPhier system.
983 To compile this driver as a module, choose M here: the
984 module will be called uniphier_wdt.
986 config RTD119X_WATCHDOG
987 bool "Realtek RTD119x/RTD129x watchdog support"
988 depends on ARCH_REALTEK || COMPILE_TEST
993 Say Y here to include support for the watchdog timer in
994 Realtek RTD1295 SoCs.
997 tristate "Spreadtrum watchdog support"
998 depends on ARCH_SPRD || COMPILE_TEST
1001 Say Y here to include watchdog timer supported
1002 by Spreadtrum system.
1004 config PM8916_WATCHDOG
1005 tristate "QCOM PM8916 pmic watchdog"
1006 depends on OF && MFD_SPMI_PMIC
1007 select WATCHDOG_CORE
1009 Say Y here to include support watchdog timer embedded into the
1012 config VISCONTI_WATCHDOG
1013 tristate "Toshiba Visconti series watchdog support"
1014 depends on ARCH_VISCONTI || COMPILE_TEST
1015 select WATCHDOG_CORE
1017 Say Y here to include support for the watchdog timer in Toshiba
1020 # X86 (i386 + ia64 + x86_64) Architecture
1023 tristate "Acquire SBC Watchdog Timer"
1026 This is the driver for the hardware watchdog on Single Board
1027 Computers produced by Acquire Inc (and others). This watchdog
1028 simply watches your kernel to make sure it doesn't freeze, and if
1029 it does, it reboots your computer after a certain amount of time.
1031 To compile this driver as a module, choose M here: the
1032 module will be called acquirewdt.
1034 Most people will say N.
1036 config ADVANTECH_WDT
1037 tristate "Advantech SBC Watchdog Timer"
1040 If you are configuring a Linux kernel for the Advantech single-board
1041 computer, say `Y' here to support its built-in watchdog timer
1042 feature. More information can be found at
1043 <https://www.advantech.com.tw/products/>
1046 tristate "ALi M1535 PMU Watchdog Timer"
1047 depends on X86 && PCI
1049 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1051 To compile this driver as a module, choose M here: the
1052 module will be called alim1535_wdt.
1054 Most people will say N.
1057 tristate "ALi M7101 PMU Computer Watchdog"
1060 This is the driver for the hardware watchdog on the ALi M7101 PMU
1061 as used in the x86 Cobalt servers and also found in some
1062 SPARC Netra servers too.
1064 To compile this driver as a module, choose M here: the
1065 module will be called alim7101_wdt.
1067 Most people will say N.
1070 tristate "WinSystems EBC-C384 Watchdog Timer"
1073 select WATCHDOG_CORE
1075 Enables watchdog timer support for the watchdog timer on the
1076 WinSystems EBC-C384 motherboard. The timeout may be configured via
1077 the timeout module parameter.
1080 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1083 This is the driver for the hardware watchdog on the Fintek F71808E,
1084 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1085 F81866 Super I/O controllers.
1087 You can compile this driver directly into the kernel, or use
1088 it as a module. The module will be called f71808e_wdt.
1091 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1092 depends on X86 && PCI
1093 select WATCHDOG_CORE
1095 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1096 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1097 the machine after its expiration. The expiration time can be
1098 configured with the "heartbeat" parameter.
1100 To compile this driver as a module, choose M here: the
1101 module will be called sp5100_tco.
1104 tristate "AMD Geode CS5535/CS5536 Watchdog"
1105 depends on CS5535_MFGPT
1107 This driver enables a watchdog capability built into the
1108 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1109 processors. This watchdog watches your kernel to make sure
1110 it doesn't freeze, and if it does, it reboots your computer after
1111 a certain amount of time.
1113 You can compile this driver directly into the kernel, or use
1114 it as a module. The module will be called geodewdt.
1117 tristate "AMD Elan SC520 processor Watchdog"
1118 depends on MELAN || COMPILE_TEST
1120 This is the driver for the hardware watchdog built in to the
1121 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1122 This watchdog simply watches your kernel to make sure it doesn't
1123 freeze, and if it does, it reboots your computer after a certain
1126 You can compile this driver directly into the kernel, or use
1127 it as a module. The module will be called sc520_wdt.
1129 config SBC_FITPC2_WATCHDOG
1130 tristate "Compulab SBC-FITPC2 watchdog"
1133 This is the driver for the built-in watchdog timer on the fit-PC2,
1134 fit-PC2i, CM-iAM single-board computers made by Compulab.
1136 It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux.
1137 When "Watchdog Timer Value" enabled one can set 31-255 s operational range.
1139 Entering BIOS setup temporary disables watchdog operation regardless to current state,
1140 so system will not be restarted while user in BIOS setup.
1142 Once watchdog was enabled the system will be restarted every
1143 "Watchdog Timer Value" period, so to prevent it user can restart or
1144 disable the watchdog.
1146 To compile this driver as a module, choose M here: the
1147 module will be called sbc_fitpc2_wdt.
1149 Most people will say N.
1152 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1155 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1156 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1157 information are at <http://www.eurotech.it/>.
1160 tristate "IB700 SBC Watchdog Timer"
1163 This is the driver for the hardware watchdog on the IB700 Single
1164 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
1165 simply watches your kernel to make sure it doesn't freeze, and if
1166 it does, it reboots your computer after a certain amount of time.
1168 This driver is like the WDT501 driver but for slightly different hardware.
1170 To compile this driver as a module, choose M here: the
1171 module will be called ib700wdt.
1173 Most people will say N.
1176 tristate "IBM Automatic Server Restart"
1179 This is the driver for the IBM Automatic Server Restart watchdog
1180 timer built-in into some eServer xSeries machines.
1182 To compile this driver as a module, choose M here: the
1183 module will be called ibmasr.
1186 tristate "ICP Single Board Computer Watchdog Timer"
1189 This is a driver for the hardware watchdog on the ICP Single
1190 Board Computer. This driver is working on (at least) the following
1191 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1193 To compile this driver as a module, choose M here: the
1194 module will be called wafer5823wdt.
1197 tristate "Intel 6300ESB Timer/Watchdog"
1199 select WATCHDOG_CORE
1201 Hardware driver for the watchdog timer built into the Intel
1202 6300ESB controller hub.
1204 To compile this driver as a module, choose M here: the
1205 module will be called i6300esb.
1208 tristate "Intel Atom E6xx Watchdog"
1209 depends on X86 && PCI
1210 select WATCHDOG_CORE
1214 Hardware driver for the watchdog timer built into the Intel
1215 Atom E6XX (TunnelCreek) processor.
1217 To compile this driver as a module, choose M here: the
1218 module will be called ie6xx_wdt.
1220 config INTEL_SCU_WATCHDOG
1221 bool "Intel SCU Watchdog for Mobile Platforms"
1222 depends on X86_INTEL_MID
1224 Hardware driver for the watchdog time built into the Intel SCU
1225 for Intel Mobile Platforms.
1227 To compile this driver as a module, choose M here.
1229 config INTEL_MID_WATCHDOG
1230 tristate "Intel MID Watchdog Timer"
1231 depends on X86_INTEL_MID
1232 select WATCHDOG_CORE
1234 Watchdog timer driver built into the Intel SCU for Intel MID
1237 This driver currently supports only the watchdog evolution
1238 implementation in SCU, available for Merrifield generation.
1240 To compile this driver as a module, choose M here.
1243 tristate "Intel TCO Timer/Watchdog"
1244 depends on (X86 || IA64) && PCI
1245 select WATCHDOG_CORE
1246 depends on I2C || I2C=n
1247 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1248 select LPC_ICH if !EXPERT
1249 select I2C_I801 if !EXPERT && I2C
1251 Hardware driver for the intel TCO timer based watchdog devices.
1252 These drivers are included in the Intel 82801 I/O Controller
1253 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1256 The TCO (Total Cost of Ownership) timer is a watchdog timer
1257 that will reboot the machine after its second expiration. The
1258 expiration time can be configured with the "heartbeat" parameter.
1260 On some motherboards the driver may fail to reset the chipset's
1261 NO_REBOOT flag which prevents the watchdog from rebooting the
1262 machine. If this is the case you will get a kernel message like
1263 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1265 To compile this driver as a module, choose M here: the
1266 module will be called iTCO_wdt.
1268 config ITCO_VENDOR_SUPPORT
1269 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1272 Add vendor specific support to the intel TCO timer based watchdog
1273 devices. At this moment we only have additional support for some
1274 SuperMicro Inc. motherboards.
1277 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1280 This is the driver for the built-in watchdog timer on the IT8712F
1281 Super I/0 chipset used on many motherboards.
1283 If the driver does not work, then make sure that the game port in
1284 the BIOS is enabled.
1286 To compile this driver as a module, choose M here: the
1287 module will be called it8712f_wdt.
1290 tristate "IT87 Watchdog Timer"
1292 select WATCHDOG_CORE
1294 This is the driver for the hardware watchdog on the ITE IT8607,
1295 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1296 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1297 IT8783 Super I/O chips.
1299 This watchdog simply watches your kernel to make sure it doesn't
1300 freeze, and if it does, it reboots your computer after a certain
1303 To compile this driver as a module, choose M here: the module will
1307 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1308 select WATCHDOG_CORE
1309 depends on X86 && PCI
1311 A software monitoring watchdog and NMI handling driver. This driver
1312 will detect lockups and provide a stack trace. This is a driver that
1313 will only load on an HP ProLiant system with a minimum of iLO2 support.
1314 To compile this driver as a module, choose M here: the module will be
1317 config HPWDT_NMI_DECODING
1318 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1319 depends on HP_WATCHDOG
1322 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1323 "Generate NMI to System" virtual button. When an NMI is claimed
1324 by the driver, panic is called.
1327 tristate "Kontron COM Watchdog Timer"
1328 depends on MFD_KEMPLD
1329 select WATCHDOG_CORE
1331 Support for the PLD watchdog on some Kontron ETX and COMexpress
1332 (ETXexpress) modules
1334 This driver can also be built as a module. If so, the module will be
1338 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1341 This is a driver for National Semiconductor PC87307/PC97307 hardware
1342 watchdog cards as found on the SC1200. This watchdog is mainly used
1343 for power management purposes and can be used to power down the device
1344 during inactivity periods (includes interrupt activity monitoring).
1346 To compile this driver as a module, choose M here: the
1347 module will be called sc1200wdt.
1349 Most people will say N.
1352 tristate "National Semiconductor SCx200 Watchdog"
1353 depends on SCx200 && PCI
1355 Enable the built-in watchdog timer support on the National
1356 Semiconductor SCx200 processors.
1358 If compiled as a module, it will be called scx200_wdt.
1361 tristate "NS PC87413 watchdog"
1364 This is the driver for the hardware watchdog on the PC87413 chipset
1365 This watchdog simply watches your kernel to make sure it doesn't
1366 freeze, and if it does, it reboots your computer after a certain
1369 To compile this driver as a module, choose M here: the
1370 module will be called pc87413_wdt.
1372 Most people will say N.
1375 tristate "nVidia TCO Timer/Watchdog"
1376 depends on X86 && PCI
1378 Hardware driver for the TCO timer built into the nVidia Hub family
1379 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1380 watchdog timer that will reboot the machine after its second
1381 expiration. The expiration time can be configured with the
1382 "heartbeat" parameter.
1384 On some motherboards the driver may fail to reset the chipset's
1385 NO_REBOOT flag which prevents the watchdog from rebooting the
1386 machine. If this is the case you will get a kernel message like
1387 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1389 To compile this driver as a module, choose M here: the
1390 module will be called nv_tco.
1393 tristate "RDC R-321x SoC watchdog"
1394 depends on X86_RDC321X || COMPILE_TEST
1397 This is the driver for the built in hardware watchdog
1398 in the RDC R-321x SoC.
1400 To compile this driver as a module, choose M here: the
1401 module will be called rdc321x_wdt.
1404 tristate "SBC-60XX Watchdog Timer"
1407 This driver can be used with the watchdog timer found on some
1408 single board computers, namely the 6010 PII based computer.
1409 It may well work with other cards. It reads port 0x443 to enable
1410 and re-set the watchdog timer, and reads port 0x45 to disable
1411 the watchdog. If you have a card that behave in similar ways,
1412 you can probably make this driver work with your card as well.
1414 You can compile this driver directly into the kernel, or use
1415 it as a module. The module will be called sbc60xxwdt.
1418 tristate "SBC8360 Watchdog Timer"
1422 This is the driver for the hardware watchdog on the SBC8360 Single
1423 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1425 To compile this driver as a module, choose M here: the
1426 module will be called sbc8360.
1428 Most people will say N.
1431 tristate "SBC Nano 7240 Watchdog Timer"
1432 depends on X86_32 && !UML
1434 This is the driver for the hardware watchdog found on the IEI
1435 single board computers EPIC Nano 7240 (and likely others). This
1436 watchdog simply watches your kernel to make sure it doesn't freeze,
1437 and if it does, it reboots your computer after a certain amount of
1440 To compile this driver as a module, choose M here: the
1441 module will be called sbc7240_wdt.
1444 tristate "SMA CPU5 Watchdog"
1448 To compile this driver as a module, choose M here: the
1449 module will be called cpu5wdt.
1451 config SMSC_SCH311X_WDT
1452 tristate "SMSC SCH311X Watchdog Timer"
1455 This is the driver for the hardware watchdog timer on the
1456 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1457 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1460 To compile this driver as a module, choose M here: the
1461 module will be called sch311x_wdt.
1463 config SMSC37B787_WDT
1464 tristate "Winbond SMsC37B787 Watchdog Timer"
1467 This is the driver for the hardware watchdog component on the
1468 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1469 from Vision Systems and maybe others.
1471 This watchdog simply watches your kernel to make sure it doesn't
1472 freeze, and if it does, it reboots your computer after a certain
1475 Usually a userspace daemon will notify the kernel WDT driver that
1476 userspace is still alive, at regular intervals.
1478 To compile this driver as a module, choose M here: the
1479 module will be called smsc37b787_wdt.
1481 Most people will say N.
1484 tristate "TQ-Systems TQMX86 Watchdog Timer"
1486 select WATCHDOG_CORE
1488 This is the driver for the hardware watchdog timer in the TQMX86 IO
1489 controller found on some of their ComExpress Modules.
1491 To compile this driver as a module, choose M here; the module
1492 will be called tqmx86_wdt.
1494 Most people will say N.
1497 tristate "VIA Watchdog Timer"
1498 depends on X86 && PCI
1499 select WATCHDOG_CORE
1501 This is the driver for the hardware watchdog timer on VIA
1502 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1504 To compile this driver as a module, choose M here; the module
1505 will be called via_wdt.
1507 Most people will say N.
1510 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1512 select WATCHDOG_CORE
1514 This is the driver for the hardware watchdog on the following
1516 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1530 This watchdog simply watches your kernel to make sure it doesn't
1531 freeze, and if it does, it reboots your computer after a certain
1534 To compile this driver as a module, choose M here: the
1535 module will be called w83627hf_wdt.
1537 Most people will say N.
1540 tristate "W83877F (EMACS) Watchdog Timer"
1543 This is the driver for the hardware watchdog on the W83877F chipset
1544 as used in EMACS PC-104 motherboards (and likely others). This
1545 watchdog simply watches your kernel to make sure it doesn't freeze,
1546 and if it does, it reboots your computer after a certain amount of
1549 To compile this driver as a module, choose M here: the
1550 module will be called w83877f_wdt.
1552 Most people will say N.
1555 tristate "W83977F (PCM-5335) Watchdog Timer"
1558 This is the driver for the hardware watchdog on the W83977F I/O chip
1559 as used in AAEON's PCM-5335 SBC (and likely others). This
1560 watchdog simply watches your kernel to make sure it doesn't freeze,
1561 and if it does, it reboots your computer after a certain amount of
1564 To compile this driver as a module, choose M here: the
1565 module will be called w83977f_wdt.
1568 tristate "ZF MachZ Watchdog"
1571 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1572 N. This is the driver for the watchdog timer built-in on that
1573 processor using ZF-Logic interface. This watchdog simply watches
1574 your kernel to make sure it doesn't freeze, and if it does, it
1575 reboots your computer after a certain amount of time.
1577 To compile this driver as a module, choose M here: the
1578 module will be called machzwd.
1580 config SBC_EPX_C3_WATCHDOG
1581 tristate "Winsystems SBC EPX-C3 watchdog"
1584 This is the driver for the built-in watchdog timer on the EPX-C3
1585 Single-board computer made by Winsystems, Inc.
1587 *Note*: This hardware watchdog is not probeable and thus there
1588 is no way to know if writing to its IO address will corrupt
1589 your system or have any real effect. The only way to be sure
1590 that this driver does what you want is to make sure you
1591 are running it on an EPX-C3 from Winsystems with the watchdog
1592 timer at IO address 0x1ee and 0x1ef. It will write to both those
1593 IO ports. Basically, the assumption is made that if you compile
1594 this driver into your kernel and/or load it as a module, that you
1595 know what you are doing and that you are in fact running on an
1598 To compile this driver as a module, choose M here: the
1599 module will be called sbc_epx_c3.
1601 config INTEL_MEI_WDT
1602 tristate "Intel MEI iAMT Watchdog"
1603 depends on INTEL_MEI && X86
1604 select WATCHDOG_CORE
1606 A device driver for the Intel MEI iAMT watchdog.
1608 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1609 Whenever the OS hangs or crashes, iAMT will send an event
1610 to any subscriber to this event. The watchdog doesn't reset the
1613 To compile this driver as a module, choose M here:
1614 the module will be called mei_wdt.
1617 tristate "NI 903x/913x Watchdog"
1618 depends on X86 && ACPI
1619 select WATCHDOG_CORE
1621 This is the driver for the watchdog timer on the National Instruments
1622 903x/913x real-time controllers.
1624 To compile this driver as a module, choose M here: the module will be
1628 tristate "NIC7018 Watchdog"
1629 depends on X86 && ACPI
1630 select WATCHDOG_CORE
1632 Support for National Instruments NIC7018 Watchdog.
1634 To compile this driver as a module, choose M here: the module will be
1639 config M54xx_WATCHDOG
1640 tristate "MCF54xx watchdog support"
1643 To compile this driver as a module, choose M here: the
1644 module will be called m54xx_wdt.
1646 # MicroBlaze Architecture
1651 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1652 depends on ATH79 || (ARM && COMPILE_TEST)
1654 Hardware driver for the built-in watchdog timer on the Atheros
1655 AR71XX/AR724X/AR913X SoCs.
1658 tristate "Broadcom BCM47xx Watchdog Timer"
1659 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1660 select WATCHDOG_CORE
1662 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1665 tristate "IDT RC32434 SoC Watchdog Timer"
1666 depends on MIKROTIK_RB532
1668 Hardware driver for the IDT RC32434 SoC built-in
1671 To compile this driver as a module, choose M here: the
1672 module will be called rc32434_wdt.
1675 tristate "Indy/I2 Hardware Watchdog"
1676 depends on SGI_HAS_INDYDOG
1678 Hardware driver for the Indy's/I2's watchdog. This is a
1679 watchdog timer that will reboot the machine after a 60 second
1680 timer expired and no process has written to /dev/watchdog during
1684 tristate "Ingenic jz4740 SoC hardware watchdog"
1686 depends on COMMON_CLK
1687 select WATCHDOG_CORE
1690 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1693 tristate "MTX-1 Hardware Watchdog"
1694 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1696 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1697 will reboot the machine after a 100 seconds timer expired.
1700 tristate "PNX833x Hardware Watchdog"
1701 depends on SOC_PNX8335
1704 Hardware driver for the PNX833x's watchdog. This is a
1705 watchdog timer that will reboot the machine after a programmable
1706 timer has expired and no process has written to /dev/watchdog during
1710 tristate "Sibyte SoC hardware watchdog"
1711 depends on CPU_SB1 || (MIPS && COMPILE_TEST)
1713 Watchdog driver for the built in watchdog hardware in Sibyte
1714 SoC processors. There are apparently two watchdog timers
1715 on such processors; this driver supports only the first one,
1716 because currently Linux only supports exporting one watchdog
1719 To compile this driver as a loadable module, choose M here.
1720 The module will be called sb_wdog.
1723 tristate "TI AR7 Watchdog Timer"
1724 depends on AR7 || (MIPS && COMPILE_TEST)
1726 Hardware driver for the TI AR7 Watchdog Timer.
1729 tristate "Toshiba TXx9 Watchdog Timer"
1730 depends on CPU_TX39XX || CPU_TX49XX || (MIPS && COMPILE_TEST)
1731 select WATCHDOG_CORE
1733 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1736 tristate "Cavium OCTEON SOC family Watchdog Timer"
1737 depends on CAVIUM_OCTEON_SOC
1739 select WATCHDOG_CORE
1740 select EXPORT_UASM if OCTEON_WDT = m
1742 Hardware driver for OCTEON's on chip watchdog timer.
1743 Enables the watchdog for all cores running Linux. It
1744 installs a NMI handler and pokes the watchdog based on an
1745 interrupt. On first expiration of the watchdog, the
1746 interrupt handler pokes it. The second expiration causes an
1747 NMI that prints a message. The third expiration causes a
1750 When userspace has /dev/watchdog open, no poking is done
1751 from the first interrupt, it is then only poked when the
1755 tristate "Broadcom BCM63xx hardware watchdog"
1758 Watchdog driver for the built in watchdog hardware in Broadcom
1761 To compile this driver as a loadable module, choose M here.
1762 The module will be called bcm63xx_wdt.
1765 tristate "Broadcom BCM2835 hardware watchdog"
1766 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1767 select WATCHDOG_CORE
1769 Watchdog driver for the built in watchdog hardware in Broadcom
1772 To compile this driver as a loadable module, choose M here.
1773 The module will be called bcm2835_wdt.
1776 tristate "BCM Kona Watchdog"
1777 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1778 select WATCHDOG_CORE
1780 Support for the watchdog timer on the following Broadcom BCM281xx
1781 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1784 Say 'Y' or 'M' here to enable the driver. The module will be called
1787 config BCM_KONA_WDT_DEBUG
1788 bool "DEBUGFS support for BCM Kona Watchdog"
1789 depends on BCM_KONA_WDT
1791 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1792 access to the driver's internal data structures as well as watchdog
1793 timer hardware registres.
1795 If in doubt, say 'N'.
1798 tristate "BCM7038 Watchdog"
1799 select WATCHDOG_CORE
1800 depends on HAS_IOMEM
1801 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
1803 Watchdog driver for the built-in hardware in Broadcom 7038 and
1804 later SoCs used in set-top boxes. BCM7038 was made public
1805 during the 2004 CES, and since then, many Broadcom chips use this
1806 watchdog block, including some cable modem chips.
1809 tristate "Imagination Technologies PDC Watchdog Timer"
1810 depends on HAS_IOMEM
1811 depends on MIPS || COMPILE_TEST
1812 select WATCHDOG_CORE
1814 Driver for Imagination Technologies PowerDown Controller
1817 To compile this driver as a loadable module, choose M here.
1818 The module will be called imgpdc_wdt.
1821 tristate "Lantiq SoC watchdog"
1823 select WATCHDOG_CORE
1825 Hardware driver for the Lantiq SoC Watchdog Timer.
1827 config LOONGSON1_WDT
1828 tristate "Loongson1 SoC hardware watchdog"
1829 depends on MACH_LOONGSON32
1830 select WATCHDOG_CORE
1832 Hardware driver for the Loongson1 SoC Watchdog Timer.
1835 tristate "Ralink SoC watchdog"
1836 select WATCHDOG_CORE
1839 Hardware driver for the Ralink SoC Watchdog Timer.
1842 tristate "Mediatek SoC watchdog"
1843 select WATCHDOG_CORE
1844 depends on SOC_MT7620 || SOC_MT7621
1846 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1849 tristate "Microchip PIC32 hardware watchdog"
1850 select WATCHDOG_CORE
1851 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1853 Watchdog driver for the built in watchdog hardware in a PIC32.
1855 Configuration bits must be set appropriately for the watchdog to be
1856 controlled by this driver.
1858 To compile this driver as a loadable module, choose M here.
1859 The module will be called pic32-wdt.
1862 tristate "Microchip PIC32 Deadman Timer"
1863 select WATCHDOG_CORE
1864 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1866 Watchdog driver for PIC32 instruction fetch counting timer. This specific
1867 timer is typically be used in misson critical and safety critical
1868 applications, where any single failure of the software functionality
1869 and sequencing must be detected.
1871 To compile this driver as a loadable module, choose M here.
1872 The module will be called pic32-dmt.
1874 # PARISC Architecture
1876 # POWERPC Architecture
1879 tristate "GE Watchdog Timer"
1882 Watchdog timer found in a number of GE single board computers.
1885 bool "MPC52xx Watchdog Timer"
1886 depends on PPC_MPC52xx || COMPILE_TEST
1888 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1891 tristate "MPC8xxx Platform Watchdog Timer"
1892 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1893 select WATCHDOG_CORE
1895 This driver is for a SoC level watchdog that exists on some
1896 Freescale PowerPC processors. So far this driver supports:
1901 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1904 tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
1905 depends on MV64X60 || COMPILE_TEST
1908 tristate "PIKA FPGA Watchdog"
1909 depends on WARP || (PPC64 && COMPILE_TEST)
1912 This enables the watchdog in the PIKA FPGA. Currently used on
1916 tristate "PowerPC Book-E Watchdog Timer"
1917 depends on BOOKE || 4xx
1918 select WATCHDOG_CORE
1920 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1921 MPC85xx SOCs and the IBM PowerPC 440.
1923 Please see Documentation/watchdog/watchdog-api.rst for
1926 config BOOKE_WDT_DEFAULT_TIMEOUT
1927 int "PowerPC Book-E Watchdog Timer Default Timeout"
1928 depends on BOOKE_WDT
1929 default 38 if PPC_FSL_BOOK3E
1930 range 0 63 if PPC_FSL_BOOK3E
1931 default 3 if !PPC_FSL_BOOK3E
1932 range 0 3 if !PPC_FSL_BOOK3E
1934 Select the default watchdog timer period to be used by the PowerPC
1935 Book-E watchdog driver. A watchdog "event" occurs when the bit
1936 position represented by this number transitions from zero to one.
1938 For Freescale Book-E processors, this is a number between 0 and 63.
1939 For other Book-E processors, this is a number between 0 and 3.
1941 The value can be overridden by the wdt_period command-line parameter.
1944 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1945 select WATCHDOG_CORE
1946 depends on GPIOLIB || COMPILE_TEST
1948 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1950 The driver can also be built as a module. If so, the module will be
1953 If unsure select N here.
1955 # PPC64 Architecture
1957 config WATCHDOG_RTAS
1958 tristate "RTAS watchdog"
1961 This driver adds watchdog support for the RTAS watchdog.
1963 To compile this driver as a module, choose M here. The module
1964 will be called wdrtas.
1968 config DIAG288_WATCHDOG
1969 tristate "System z diag288 Watchdog"
1971 select WATCHDOG_CORE
1973 IBM s/390 and zSeries machines running under z/VM 5.1 or later
1974 provide a virtual watchdog timer to their guest that cause a
1975 user define Control Program command to be executed after a
1977 LPAR provides a very similar interface. This driver handles
1980 To compile this driver as a module, choose M here. The module
1981 will be called diag288_wdt.
1983 # SUPERH (sh + sh64) Architecture
1986 tristate "SuperH Watchdog"
1987 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
1988 select WATCHDOG_CORE
1990 This driver adds watchdog support for the integrated watchdog in the
1991 SuperH processors. If you have one of these processors and wish
1992 to have watchdog support enabled, say Y, otherwise say N.
1994 As a side note, saying Y here will automatically boost HZ to 1000
1995 so that the timer has a chance to clear the overflow counter. On
1996 slower systems (such as the SH-2 and SH-3) this will likely yield
1997 some performance issues. As such, the WDT should be avoided here
1998 unless it is absolutely necessary.
2000 To compile this driver as a module, choose M here: the
2001 module will be called shwdt.
2003 # SPARC Architecture
2005 # SPARC64 Architecture
2007 config WATCHDOG_CP1XXX
2008 tristate "CP1XXX Hardware Watchdog support"
2009 depends on SPARC64 && PCI
2011 This is the driver for the hardware watchdog timers present on
2012 Sun Microsystems CompactPCI models CP1400 and CP1500.
2014 To compile this driver as a module, choose M here: the
2015 module will be called cpwatchdog.
2017 If you do not have a CompactPCI model CP1400 or CP1500, or
2018 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2019 you should say N to this option.
2022 tristate "RIO Hardware Watchdog support"
2023 depends on SPARC64 && PCI
2025 Say Y here to support the hardware watchdog capability on Sun RIO
2026 machines. The watchdog timeout period is normally one minute but
2027 can be changed with a boot-time parameter.
2029 config WATCHDOG_SUN4V
2030 tristate "Sun4v Watchdog support"
2031 select WATCHDOG_CORE
2034 Say Y here to support the hypervisor watchdog capability embedded
2035 in the SPARC sun4v architecture.
2037 To compile this driver as a module, choose M here. The module will
2038 be called sun4v_wdt.
2040 # XTENSA Architecture
2045 tristate "Xen Watchdog support"
2047 select WATCHDOG_CORE
2049 Say Y here to support the hypervisor watchdog capability provided
2050 by Xen 4.0 and newer. The watchdog timeout period is normally one
2051 minute but can be changed with a boot-time parameter.
2054 tristate "UML watchdog"
2055 depends on UML || COMPILE_TEST
2058 # ISA-based Watchdog Cards
2061 comment "ISA-based Watchdog Cards"
2065 tristate "Berkshire Products ISA-PC Watchdog"
2068 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2069 This card simply watches your kernel to make sure it doesn't freeze,
2070 and if it does, it reboots your computer after a certain amount of
2071 time. This driver is like the WDT501 driver but for different
2072 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>. The PC
2073 watchdog cards can be ordered from <http://www.berkprod.com/>.
2075 To compile this driver as a module, choose M here: the
2076 module will be called pcwd.
2078 Most people will say N.
2081 tristate "Mixcom Watchdog"
2084 This is a driver for the Mixcom hardware watchdog cards. This
2085 watchdog simply watches your kernel to make sure it doesn't freeze,
2086 and if it does, it reboots your computer after a certain amount of
2089 To compile this driver as a module, choose M here: the
2090 module will be called mixcomwd.
2092 Most people will say N.
2095 tristate "WDT Watchdog timer"
2098 If you have a WDT500P or WDT501P watchdog board, say Y here,
2099 otherwise N. It is not possible to probe for this board, which means
2100 that you have to inform the kernel about the IO port and IRQ that
2101 is needed (you can do this via the io and irq parameters)
2103 To compile this driver as a module, choose M here: the
2104 module will be called wdt.
2107 # PCI-based Watchdog Cards
2110 comment "PCI-based Watchdog Cards"
2113 config PCIPCWATCHDOG
2114 tristate "Berkshire Products PCI-PC Watchdog"
2117 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2118 This card simply watches your kernel to make sure it doesn't freeze,
2119 and if it does, it reboots your computer after a certain amount of
2120 time. The card can also monitor the internal temperature of the PC.
2121 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2123 To compile this driver as a module, choose M here: the
2124 module will be called pcwd_pci.
2126 Most people will say N.
2129 tristate "PCI-WDT500/501 Watchdog timer"
2132 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2134 If you have a PCI-WDT501 watchdog board then you can enable the
2135 temperature sensor by setting the type parameter to 501.
2137 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2138 can do this via the tachometer parameter. Only do this if you have a
2139 fan tachometer actually set up.
2141 To compile this driver as a module, choose M here: the
2142 module will be called wdt_pci.
2145 # USB-based Watchdog Cards
2148 comment "USB-based Watchdog Cards"
2151 config USBPCWATCHDOG
2152 tristate "Berkshire Products USB-PC Watchdog"
2155 This is the driver for the Berkshire Products USB-PC Watchdog card.
2156 This card simply watches your kernel to make sure it doesn't freeze,
2157 and if it does, it reboots your computer after a certain amount of
2158 time. The card can also monitor the internal temperature of the PC.
2159 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2161 To compile this driver as a module, choose M here: the
2162 module will be called pcwd_usb.
2164 Most people will say N.