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 || 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_RZG2LWDT
887 tristate "Renesas RZ/G2L WDT Watchdog"
888 depends on ARCH_RENESAS || COMPILE_TEST
891 This driver adds watchdog support for the integrated watchdogs in the
892 Renesas RZ/G2L SoCs. These watchdogs can be used to reset a system.
894 config ASPEED_WATCHDOG
895 tristate "Aspeed BMC watchdog support"
896 depends on ARCH_ASPEED || COMPILE_TEST
899 Say Y here to include support for the watchdog timer
902 This driver is required to reboot the SoC.
904 To compile this driver as a module, choose M here: the
905 module will be called aspeed_wdt.
907 config STM32_WATCHDOG
908 tristate "STM32 Independent WatchDoG (IWDG) support"
909 depends on ARCH_STM32
913 Say Y here to include support for the watchdog timer
916 To compile this driver as a module, choose M here: the
917 module will be called stm32_iwdg.
919 config STPMIC1_WATCHDOG
920 tristate "STPMIC1 PMIC watchdog support"
921 depends on MFD_STPMIC1
924 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
925 If the watchdog timer expires, stpmic1 will shut down all its power
928 To compile this driver as a module, choose M here: the
929 module will be called spmic1_wdt.
931 config UNIPHIER_WATCHDOG
932 tristate "UniPhier watchdog support"
933 depends on ARCH_UNIPHIER || COMPILE_TEST
934 depends on OF && MFD_SYSCON
937 Say Y here to include support watchdog timer embedded
938 into the UniPhier system.
940 To compile this driver as a module, choose M here: the
941 module will be called uniphier_wdt.
943 config RTD119X_WATCHDOG
944 bool "Realtek RTD119x/RTD129x watchdog support"
945 depends on ARCH_REALTEK || COMPILE_TEST
950 Say Y here to include support for the watchdog timer in
951 Realtek RTD1295 SoCs.
953 config REALTEK_OTTO_WDT
954 tristate "Realtek Otto MIPS watchdog support"
955 depends on MACH_REALTEK_RTL || COMPILE_TEST
956 depends on COMMON_CLK
958 default MACH_REALTEK_RTL
960 Say Y here to include support for the watchdog timer on Realtek
961 RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout
962 notifications and system reset on timeout.
964 When built as a module this will be called realtek_otto_wdt.
967 tristate "Spreadtrum watchdog support"
968 depends on ARCH_SPRD || COMPILE_TEST
971 Say Y here to include watchdog timer supported
972 by Spreadtrum system.
974 config PM8916_WATCHDOG
975 tristate "QCOM PM8916 pmic watchdog"
976 depends on OF && MFD_SPMI_PMIC
979 Say Y here to include support watchdog timer embedded into the
982 config VISCONTI_WATCHDOG
983 tristate "Toshiba Visconti series watchdog support"
984 depends on ARCH_VISCONTI || COMPILE_TEST
987 Say Y here to include support for the watchdog timer in Toshiba
990 config MSC313E_WATCHDOG
991 tristate "MStar MSC313e watchdog"
992 depends on ARCH_MSTARV7 || COMPILE_TEST
995 Say Y here to include support for the Watchdog timer embedded
996 into MStar MSC313e chips. This will reboot your system when the
999 To compile this driver as a module, choose M here: the
1000 module will be called msc313e_wdt.
1002 config APPLE_WATCHDOG
1003 tristate "Apple SoC watchdog"
1004 depends on ARCH_APPLE || COMPILE_TEST
1005 select WATCHDOG_CORE
1007 Say Y here to include support for the Watchdog found in Apple
1008 SoCs such as the M1. Next to the common watchdog features this
1009 driver is also required in order to reboot these SoCs.
1011 To compile this driver as a module, choose M here: the
1012 module will be called apple_wdt.
1014 # X86 (i386 + ia64 + x86_64) Architecture
1017 tristate "Acquire SBC Watchdog Timer"
1020 This is the driver for the hardware watchdog on Single Board
1021 Computers produced by Acquire Inc (and others). This watchdog
1022 simply watches your kernel to make sure it doesn't freeze, and if
1023 it does, it reboots your computer after a certain amount of time.
1025 To compile this driver as a module, choose M here: the
1026 module will be called acquirewdt.
1028 Most people will say N.
1030 config ADVANTECH_WDT
1031 tristate "Advantech SBC Watchdog Timer"
1034 If you are configuring a Linux kernel for the Advantech single-board
1035 computer, say `Y' here to support its built-in watchdog timer
1036 feature. More information can be found at
1037 <https://www.advantech.com.tw/products/>
1040 tristate "ALi M1535 PMU Watchdog Timer"
1041 depends on X86 && PCI
1043 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1045 To compile this driver as a module, choose M here: the
1046 module will be called alim1535_wdt.
1048 Most people will say N.
1051 tristate "ALi M7101 PMU Computer Watchdog"
1054 This is the driver for the hardware watchdog on the ALi M7101 PMU
1055 as used in the x86 Cobalt servers and also found in some
1056 SPARC Netra servers too.
1058 To compile this driver as a module, choose M here: the
1059 module will be called alim7101_wdt.
1061 Most people will say N.
1064 tristate "WinSystems EBC-C384 Watchdog Timer"
1067 select WATCHDOG_CORE
1069 Enables watchdog timer support for the watchdog timer on the
1070 WinSystems EBC-C384 motherboard. The timeout may be configured via
1071 the timeout module parameter.
1074 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1076 select WATCHDOG_CORE
1078 This is the driver for the hardware watchdog on the Fintek F71808E,
1079 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1080 F81866 Super I/O controllers.
1082 You can compile this driver directly into the kernel, or use
1083 it as a module. The module will be called f71808e_wdt.
1086 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1087 depends on X86 && PCI
1088 select WATCHDOG_CORE
1090 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1091 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1092 the machine after its expiration. The expiration time can be
1093 configured with the "heartbeat" parameter.
1095 To compile this driver as a module, choose M here: the
1096 module will be called sp5100_tco.
1099 tristate "AMD Geode CS5535/CS5536 Watchdog"
1100 depends on CS5535_MFGPT
1102 This driver enables a watchdog capability built into the
1103 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1104 processors. This watchdog watches your kernel to make sure
1105 it doesn't freeze, and if it does, it reboots your computer after
1106 a certain amount of time.
1108 You can compile this driver directly into the kernel, or use
1109 it as a module. The module will be called geodewdt.
1112 tristate "AMD Elan SC520 processor Watchdog"
1113 depends on MELAN || COMPILE_TEST
1115 This is the driver for the hardware watchdog built in to the
1116 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1117 This watchdog simply watches your kernel to make sure it doesn't
1118 freeze, and if it does, it reboots your computer after a certain
1121 You can compile this driver directly into the kernel, or use
1122 it as a module. The module will be called sc520_wdt.
1124 config SBC_FITPC2_WATCHDOG
1125 tristate "Compulab SBC-FITPC2 watchdog"
1128 This is the driver for the built-in watchdog timer on the fit-PC2,
1129 fit-PC2i, CM-iAM single-board computers made by Compulab.
1131 It's possible to enable the watchdog timer either from BIOS (F2) or
1133 When the "Watchdog Timer Value" is enabled one can set 31-255 seconds
1136 Entering BIOS setup temporarily disables watchdog operation regardless
1137 of current state, so system will not be restarted while user is in
1140 Once the watchdog is enabled the system will be restarted every
1141 "Watchdog Timer Value" period, so to prevent it user can restart or
1142 disable the watchdog.
1144 To compile this driver as a module, choose M here: the
1145 module will be called sbc_fitpc2_wdt.
1147 Most people will say N.
1150 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1153 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1154 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1155 information are at <http://www.eurotech.it/>.
1158 tristate "IB700 SBC Watchdog Timer"
1161 This is the driver for the hardware watchdog on the IB700 Single
1162 Board Computer produced by TMC Technology (www.tmc-uk.com). This
1163 watchdog simply watches your kernel to make sure it doesn't freeze,
1164 and if it does, it reboots your computer after a certain amount of time.
1166 This driver is like the WDT501 driver but for slightly different
1169 To compile this driver as a module, choose M here: the
1170 module will be called ib700wdt.
1172 Most people will say N.
1175 tristate "IBM Automatic Server Restart"
1178 This is the driver for the IBM Automatic Server Restart watchdog
1179 timer built-in into some eServer xSeries machines.
1181 To compile this driver as a module, choose M here: the
1182 module will be called ibmasr.
1185 tristate "ICP Single Board Computer Watchdog Timer"
1188 This is a driver for the hardware watchdog on the ICP Single
1189 Board Computer. This driver is working on (at least) the following
1190 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1192 To compile this driver as a module, choose M here: the
1193 module will be called wafer5823wdt.
1196 tristate "Intel 6300ESB Timer/Watchdog"
1198 select WATCHDOG_CORE
1200 Hardware driver for the watchdog timer built into the Intel
1201 6300ESB controller hub.
1203 To compile this driver as a module, choose M here: the
1204 module will be called i6300esb.
1207 tristate "Intel Atom E6xx Watchdog"
1208 depends on X86 && PCI
1209 select WATCHDOG_CORE
1213 Hardware driver for the watchdog timer built into the Intel
1214 Atom E6XX (TunnelCreek) processor.
1216 To compile this driver as a module, choose M here: the
1217 module will be called ie6xx_wdt.
1219 config INTEL_MID_WATCHDOG
1220 tristate "Intel MID Watchdog Timer"
1221 depends on X86_INTEL_MID
1222 select WATCHDOG_CORE
1224 Watchdog timer driver built into the Intel SCU for Intel MID
1227 This driver currently supports only the watchdog evolution
1228 implementation in SCU, available for Merrifield generation.
1230 To compile this driver as a module, choose M here.
1233 tristate "Intel TCO Timer/Watchdog"
1234 depends on (X86 || IA64) && PCI
1235 select WATCHDOG_CORE
1236 depends on I2C || I2C=n
1237 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1238 select LPC_ICH if !EXPERT
1239 select I2C_I801 if !EXPERT && I2C
1241 Hardware driver for the intel TCO timer based watchdog devices.
1242 These drivers are included in the Intel 82801 I/O Controller
1243 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1246 The TCO (Total Cost of Ownership) timer is a watchdog timer
1247 that will reboot the machine after its second expiration. The
1248 expiration time can be configured with the "heartbeat" parameter.
1250 On some motherboards the driver may fail to reset the chipset's
1251 NO_REBOOT flag which prevents the watchdog from rebooting the
1252 machine. If this is the case you will get a kernel message like
1253 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1255 To compile this driver as a module, choose M here: the
1256 module will be called iTCO_wdt.
1258 config ITCO_VENDOR_SUPPORT
1259 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1262 Add vendor specific support to the intel TCO timer based watchdog
1263 devices. At this moment we only have additional support for some
1264 SuperMicro Inc. motherboards.
1267 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1270 This is the driver for the built-in watchdog timer on the IT8712F
1271 Super I/0 chipset used on many motherboards.
1273 If the driver does not work, then make sure that the game port in
1274 the BIOS is enabled.
1276 To compile this driver as a module, choose M here: the
1277 module will be called it8712f_wdt.
1280 tristate "IT87 Watchdog Timer"
1282 select WATCHDOG_CORE
1284 This is the driver for the hardware watchdog on the ITE IT8607,
1285 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1286 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1287 IT8783 Super I/O chips.
1289 This watchdog simply watches your kernel to make sure it doesn't
1290 freeze, and if it does, it reboots your computer after a certain
1293 To compile this driver as a module, choose M here: the module will
1297 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1298 select WATCHDOG_CORE
1299 depends on X86 && PCI
1301 A software monitoring watchdog and NMI handling driver. This driver
1302 will detect lockups and provide a stack trace. This is a driver that
1303 will only load on an HP ProLiant system with a minimum of iLO2 support.
1304 To compile this driver as a module, choose M here: the module will be
1307 config HPWDT_NMI_DECODING
1308 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1309 depends on HP_WATCHDOG
1312 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1313 "Generate NMI to System" virtual button. When an NMI is claimed
1314 by the driver, panic is called.
1317 tristate "Kontron COM Watchdog Timer"
1318 depends on MFD_KEMPLD
1319 select WATCHDOG_CORE
1321 Support for the PLD watchdog on some Kontron ETX and COMexpress
1322 (ETXexpress) modules
1324 This driver can also be built as a module. If so, the module will be
1328 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1331 This is a driver for National Semiconductor PC87307/PC97307 hardware
1332 watchdog cards as found on the SC1200. This watchdog is mainly used
1333 for power management purposes and can be used to power down the device
1334 during inactivity periods (includes interrupt activity monitoring).
1336 To compile this driver as a module, choose M here: the
1337 module will be called sc1200wdt.
1339 Most people will say N.
1342 tristate "National Semiconductor SCx200 Watchdog"
1343 depends on SCx200 && PCI
1345 Enable the built-in watchdog timer support on the National
1346 Semiconductor SCx200 processors.
1348 If compiled as a module, it will be called scx200_wdt.
1351 tristate "NS PC87413 watchdog"
1354 This is the driver for the hardware watchdog on the PC87413 chipset
1355 This watchdog simply watches your kernel to make sure it doesn't
1356 freeze, and if it does, it reboots your computer after a certain
1359 To compile this driver as a module, choose M here: the
1360 module will be called pc87413_wdt.
1362 Most people will say N.
1365 tristate "nVidia TCO Timer/Watchdog"
1366 depends on X86 && PCI
1368 Hardware driver for the TCO timer built into the nVidia Hub family
1369 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1370 watchdog timer that will reboot the machine after its second
1371 expiration. The expiration time can be configured with the
1372 "heartbeat" parameter.
1374 On some motherboards the driver may fail to reset the chipset's
1375 NO_REBOOT flag which prevents the watchdog from rebooting the
1376 machine. If this is the case you will get a kernel message like
1377 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1379 To compile this driver as a module, choose M here: the
1380 module will be called nv_tco.
1383 tristate "RDC R-321x SoC watchdog"
1384 depends on X86_RDC321X || COMPILE_TEST
1387 This is the driver for the built in hardware watchdog
1388 in the RDC R-321x SoC.
1390 To compile this driver as a module, choose M here: the
1391 module will be called rdc321x_wdt.
1394 tristate "SBC-60XX Watchdog Timer"
1397 This driver can be used with the watchdog timer found on some
1398 single board computers, namely the 6010 PII based computer.
1399 It may well work with other cards. It reads port 0x443 to enable
1400 and re-set the watchdog timer, and reads port 0x45 to disable
1401 the watchdog. If you have a card that behave in similar ways,
1402 you can probably make this driver work with your card as well.
1404 You can compile this driver directly into the kernel, or use
1405 it as a module. The module will be called sbc60xxwdt.
1408 tristate "SBC8360 Watchdog Timer"
1412 This is the driver for the hardware watchdog on the SBC8360 Single
1413 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1415 To compile this driver as a module, choose M here: the
1416 module will be called sbc8360.
1418 Most people will say N.
1421 tristate "SBC Nano 7240 Watchdog Timer"
1422 depends on X86_32 && !UML
1424 This is the driver for the hardware watchdog found on the IEI
1425 single board computers EPIC Nano 7240 (and likely others). This
1426 watchdog simply watches your kernel to make sure it doesn't freeze,
1427 and if it does, it reboots your computer after a certain amount of
1430 To compile this driver as a module, choose M here: the
1431 module will be called sbc7240_wdt.
1434 tristate "SMA CPU5 Watchdog"
1438 To compile this driver as a module, choose M here: the
1439 module will be called cpu5wdt.
1441 config SMSC_SCH311X_WDT
1442 tristate "SMSC SCH311X Watchdog Timer"
1445 This is the driver for the hardware watchdog timer on the
1446 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1447 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1450 To compile this driver as a module, choose M here: the
1451 module will be called sch311x_wdt.
1453 config SMSC37B787_WDT
1454 tristate "Winbond SMsC37B787 Watchdog Timer"
1457 This is the driver for the hardware watchdog component on the
1458 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1459 from Vision Systems and maybe others.
1461 This watchdog simply watches your kernel to make sure it doesn't
1462 freeze, and if it does, it reboots your computer after a certain
1465 Usually a userspace daemon will notify the kernel WDT driver that
1466 userspace is still alive, at regular intervals.
1468 To compile this driver as a module, choose M here: the
1469 module will be called smsc37b787_wdt.
1471 Most people will say N.
1474 tristate "TQ-Systems TQMX86 Watchdog Timer"
1476 select WATCHDOG_CORE
1478 This is the driver for the hardware watchdog timer in the TQMX86 IO
1479 controller found on some of their ComExpress Modules.
1481 To compile this driver as a module, choose M here; the module
1482 will be called tqmx86_wdt.
1484 Most people will say N.
1487 tristate "VIA Watchdog Timer"
1488 depends on X86 && PCI
1489 select WATCHDOG_CORE
1491 This is the driver for the hardware watchdog timer on VIA
1492 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1494 To compile this driver as a module, choose M here; the module
1495 will be called via_wdt.
1497 Most people will say N.
1500 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1502 select WATCHDOG_CORE
1504 This is the driver for the hardware watchdog on the following
1506 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1520 This watchdog simply watches your kernel to make sure it doesn't
1521 freeze, and if it does, it reboots your computer after a certain
1524 To compile this driver as a module, choose M here: the
1525 module will be called w83627hf_wdt.
1527 Most people will say N.
1530 tristate "W83877F (EMACS) Watchdog Timer"
1533 This is the driver for the hardware watchdog on the W83877F chipset
1534 as used in EMACS PC-104 motherboards (and likely others). This
1535 watchdog simply watches your kernel to make sure it doesn't freeze,
1536 and if it does, it reboots your computer after a certain amount of
1539 To compile this driver as a module, choose M here: the
1540 module will be called w83877f_wdt.
1542 Most people will say N.
1545 tristate "W83977F (PCM-5335) Watchdog Timer"
1548 This is the driver for the hardware watchdog on the W83977F I/O chip
1549 as used in AAEON's PCM-5335 SBC (and likely others). This
1550 watchdog simply watches your kernel to make sure it doesn't freeze,
1551 and if it does, it reboots your computer after a certain amount of
1554 To compile this driver as a module, choose M here: the
1555 module will be called w83977f_wdt.
1558 tristate "ZF MachZ Watchdog"
1561 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1562 N. This is the driver for the watchdog timer built-in on that
1563 processor using ZF-Logic interface. This watchdog simply watches
1564 your kernel to make sure it doesn't freeze, and if it does, it
1565 reboots your computer after a certain amount of time.
1567 To compile this driver as a module, choose M here: the
1568 module will be called machzwd.
1570 config SBC_EPX_C3_WATCHDOG
1571 tristate "Winsystems SBC EPX-C3 watchdog"
1574 This is the driver for the built-in watchdog timer on the EPX-C3
1575 Single-board computer made by Winsystems, Inc.
1577 *Note*: This hardware watchdog is not probeable and thus there
1578 is no way to know if writing to its IO address will corrupt
1579 your system or have any real effect. The only way to be sure
1580 that this driver does what you want is to make sure you
1581 are running it on an EPX-C3 from Winsystems with the watchdog
1582 timer at IO address 0x1ee and 0x1ef. It will write to both those
1583 IO ports. Basically, the assumption is made that if you compile
1584 this driver into your kernel and/or load it as a module, that you
1585 know what you are doing and that you are in fact running on an
1588 To compile this driver as a module, choose M here: the
1589 module will be called sbc_epx_c3.
1591 config INTEL_MEI_WDT
1592 tristate "Intel MEI iAMT Watchdog"
1593 depends on INTEL_MEI && X86
1594 select WATCHDOG_CORE
1596 A device driver for the Intel MEI iAMT watchdog.
1598 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1599 Whenever the OS hangs or crashes, iAMT will send an event
1600 to any subscriber to this event. The watchdog doesn't reset the
1603 To compile this driver as a module, choose M here:
1604 the module will be called mei_wdt.
1607 tristate "NI 903x/913x Watchdog"
1608 depends on X86 && ACPI
1609 select WATCHDOG_CORE
1611 This is the driver for the watchdog timer on the National Instruments
1612 903x/913x real-time controllers.
1614 To compile this driver as a module, choose M here: the module will be
1618 tristate "NIC7018 Watchdog"
1619 depends on X86 && ACPI
1620 select WATCHDOG_CORE
1622 Support for National Instruments NIC7018 Watchdog.
1624 To compile this driver as a module, choose M here: the module will be
1627 config SIEMENS_SIMATIC_IPC_WDT
1628 tristate "Siemens Simatic IPC Watchdog"
1629 depends on SIEMENS_SIMATIC_IPC
1630 select WATCHDOG_CORE
1632 This driver adds support for several watchdogs found in Industrial
1635 To compile this driver as a module, choose M here: the module will be
1636 called simatic-ipc-wdt.
1640 config M54xx_WATCHDOG
1641 tristate "MCF54xx watchdog support"
1644 To compile this driver as a module, choose M here: the
1645 module will be called m54xx_wdt.
1647 # MicroBlaze Architecture
1652 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1653 depends on ATH79 || (ARM && COMPILE_TEST)
1655 Hardware driver for the built-in watchdog timer on the Atheros
1656 AR71XX/AR724X/AR913X SoCs.
1659 tristate "Broadcom BCM47xx Watchdog Timer"
1660 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1661 select WATCHDOG_CORE
1663 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1666 tristate "IDT RC32434 SoC Watchdog Timer"
1667 depends on MIKROTIK_RB532
1669 Hardware driver for the IDT RC32434 SoC built-in
1672 To compile this driver as a module, choose M here: the
1673 module will be called rc32434_wdt.
1676 tristate "Indy/I2 Hardware Watchdog"
1677 depends on SGI_HAS_INDYDOG
1679 Hardware driver for the Indy's/I2's watchdog. This is a
1680 watchdog timer that will reboot the machine after a 60 second
1681 timer expired and no process has written to /dev/watchdog during
1685 tristate "Ingenic jz4740 SoC hardware watchdog"
1687 depends on COMMON_CLK
1688 select WATCHDOG_CORE
1691 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1694 tristate "MTX-1 Hardware Watchdog"
1695 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1697 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1698 will reboot the machine after a 100 seconds timer expired.
1701 tristate "Sibyte SoC hardware watchdog"
1704 Watchdog driver for the built in watchdog hardware in Sibyte
1705 SoC processors. There are apparently two watchdog timers
1706 on such processors; this driver supports only the first one,
1707 because currently Linux only supports exporting one watchdog
1710 To compile this driver as a loadable module, choose M here.
1711 The module will be called sb_wdog.
1714 tristate "TI AR7 Watchdog Timer"
1715 depends on AR7 || (MIPS && 32BIT && COMPILE_TEST)
1717 Hardware driver for the TI AR7 Watchdog Timer.
1720 tristate "Toshiba TXx9 Watchdog Timer"
1721 depends on CPU_TX39XX || CPU_TX49XX || (MIPS && COMPILE_TEST)
1722 select WATCHDOG_CORE
1724 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1727 tristate "Cavium OCTEON SOC family Watchdog Timer"
1728 depends on CAVIUM_OCTEON_SOC
1730 select WATCHDOG_CORE
1731 select EXPORT_UASM if OCTEON_WDT = m
1733 Hardware driver for OCTEON's on chip watchdog timer.
1734 Enables the watchdog for all cores running Linux. It
1735 installs a NMI handler and pokes the watchdog based on an
1736 interrupt. On first expiration of the watchdog, the
1737 interrupt handler pokes it. The second expiration causes an
1738 NMI that prints a message. The third expiration causes a
1741 When userspace has /dev/watchdog open, no poking is done
1742 from the first interrupt, it is then only poked when the
1746 tristate "Broadcom BCM2835 hardware watchdog"
1747 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1748 select WATCHDOG_CORE
1750 Watchdog driver for the built in watchdog hardware in Broadcom
1753 To compile this driver as a loadable module, choose M here.
1754 The module will be called bcm2835_wdt.
1757 tristate "BCM Kona Watchdog"
1758 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1759 select WATCHDOG_CORE
1761 Support for the watchdog timer on the following Broadcom BCM281xx
1762 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1765 Say 'Y' or 'M' here to enable the driver. The module will be called
1768 config BCM_KONA_WDT_DEBUG
1769 bool "DEBUGFS support for BCM Kona Watchdog"
1770 depends on BCM_KONA_WDT
1772 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1773 access to the driver's internal data structures as well as watchdog
1774 timer hardware registres.
1776 If in doubt, say 'N'.
1779 tristate "BCM63xx/BCM7038 Watchdog"
1780 select WATCHDOG_CORE
1781 depends on HAS_IOMEM
1782 depends on ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST
1784 Watchdog driver for the built-in hardware in Broadcom 7038 and
1785 later SoCs used in set-top boxes. BCM7038 was made public
1786 during the 2004 CES, and since then, many Broadcom chips use this
1787 watchdog block, including some cable modem chips and DSL (63xx)
1791 tristate "Imagination Technologies PDC Watchdog Timer"
1792 depends on HAS_IOMEM
1793 depends on MIPS || COMPILE_TEST
1794 select WATCHDOG_CORE
1796 Driver for Imagination Technologies PowerDown Controller
1799 To compile this driver as a loadable module, choose M here.
1800 The module will be called imgpdc_wdt.
1803 tristate "Lantiq SoC watchdog"
1805 select WATCHDOG_CORE
1807 Hardware driver for the Lantiq SoC Watchdog Timer.
1809 config LOONGSON1_WDT
1810 tristate "Loongson1 SoC hardware watchdog"
1811 depends on MACH_LOONGSON32
1812 select WATCHDOG_CORE
1814 Hardware driver for the Loongson1 SoC Watchdog Timer.
1817 tristate "Ralink SoC watchdog"
1818 select WATCHDOG_CORE
1821 Hardware driver for the Ralink SoC Watchdog Timer.
1824 tristate "Mediatek SoC watchdog"
1825 select WATCHDOG_CORE
1826 depends on SOC_MT7620 || SOC_MT7621
1828 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1831 tristate "Microchip PIC32 hardware watchdog"
1832 select WATCHDOG_CORE
1833 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1835 Watchdog driver for the built in watchdog hardware in a PIC32.
1837 Configuration bits must be set appropriately for the watchdog to be
1838 controlled by this driver.
1840 To compile this driver as a loadable module, choose M here.
1841 The module will be called pic32-wdt.
1844 tristate "Microchip PIC32 Deadman Timer"
1845 select WATCHDOG_CORE
1846 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1848 Watchdog driver for PIC32 instruction fetch counting timer. This
1849 specific timer is typically be used in mission critical and safety
1850 critical applications, where any single failure of the software
1851 functionality and sequencing must be detected.
1853 To compile this driver as a loadable module, choose M here.
1854 The module will be called pic32-dmt.
1856 # PARISC Architecture
1858 # POWERPC Architecture
1861 tristate "GE Watchdog Timer"
1864 Watchdog timer found in a number of GE single board computers.
1867 bool "MPC52xx Watchdog Timer"
1868 depends on PPC_MPC52xx || COMPILE_TEST
1870 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1873 tristate "MPC8xxx Platform Watchdog Timer"
1874 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1875 select WATCHDOG_CORE
1877 This driver is for a SoC level watchdog that exists on some
1878 Freescale PowerPC processors. So far this driver supports:
1883 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1886 tristate "PIKA FPGA Watchdog"
1887 depends on WARP || (PPC64 && COMPILE_TEST)
1890 This enables the watchdog in the PIKA FPGA. Currently used on
1894 tristate "PowerPC Book-E Watchdog Timer"
1895 depends on BOOKE || 4xx
1896 select WATCHDOG_CORE
1898 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1899 MPC85xx SOCs and the IBM PowerPC 440.
1901 Please see Documentation/watchdog/watchdog-api.rst for
1904 config BOOKE_WDT_DEFAULT_TIMEOUT
1905 int "PowerPC Book-E Watchdog Timer Default Timeout"
1906 depends on BOOKE_WDT
1907 default 38 if PPC_FSL_BOOK3E
1908 range 0 63 if PPC_FSL_BOOK3E
1909 default 3 if !PPC_FSL_BOOK3E
1910 range 0 3 if !PPC_FSL_BOOK3E
1912 Select the default watchdog timer period to be used by the PowerPC
1913 Book-E watchdog driver. A watchdog "event" occurs when the bit
1914 position represented by this number transitions from zero to one.
1916 For Freescale Book-E processors, this is a number between 0 and 63.
1917 For other Book-E processors, this is a number between 0 and 3.
1919 The value can be overridden by the wdt_period command-line parameter.
1922 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1923 select WATCHDOG_CORE
1924 depends on GPIOLIB || COMPILE_TEST
1926 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1928 The driver can also be built as a module. If so, the module will be
1931 If unsure select N here.
1933 # PPC64 Architecture
1935 config WATCHDOG_RTAS
1936 tristate "RTAS watchdog"
1939 This driver adds watchdog support for the RTAS watchdog.
1941 To compile this driver as a module, choose M here. The module
1942 will be called wdrtas.
1946 config DIAG288_WATCHDOG
1947 tristate "System z diag288 Watchdog"
1949 select WATCHDOG_CORE
1951 IBM s/390 and zSeries machines running under z/VM 5.1 or later
1952 provide a virtual watchdog timer to their guest that cause a
1953 user define Control Program command to be executed after a
1955 LPAR provides a very similar interface. This driver handles
1958 To compile this driver as a module, choose M here. The module
1959 will be called diag288_wdt.
1961 # SUPERH (sh + sh64) Architecture
1964 tristate "SuperH Watchdog"
1965 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
1966 select WATCHDOG_CORE
1968 This driver adds watchdog support for the integrated watchdog in the
1969 SuperH processors. If you have one of these processors and wish
1970 to have watchdog support enabled, say Y, otherwise say N.
1972 As a side note, saying Y here will automatically boost HZ to 1000
1973 so that the timer has a chance to clear the overflow counter. On
1974 slower systems (such as the SH-2 and SH-3) this will likely yield
1975 some performance issues. As such, the WDT should be avoided here
1976 unless it is absolutely necessary.
1978 To compile this driver as a module, choose M here: the
1979 module will be called shwdt.
1981 # SPARC Architecture
1983 # SPARC64 Architecture
1985 config WATCHDOG_CP1XXX
1986 tristate "CP1XXX Hardware Watchdog support"
1987 depends on SPARC64 && PCI
1989 This is the driver for the hardware watchdog timers present on
1990 Sun Microsystems CompactPCI models CP1400 and CP1500.
1992 To compile this driver as a module, choose M here: the
1993 module will be called cpwatchdog.
1995 If you do not have a CompactPCI model CP1400 or CP1500, or
1996 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
1997 you should say N to this option.
2000 tristate "RIO Hardware Watchdog support"
2001 depends on SPARC64 && PCI
2003 Say Y here to support the hardware watchdog capability on Sun RIO
2004 machines. The watchdog timeout period is normally one minute but
2005 can be changed with a boot-time parameter.
2007 config WATCHDOG_SUN4V
2008 tristate "Sun4v Watchdog support"
2009 select WATCHDOG_CORE
2012 Say Y here to support the hypervisor watchdog capability embedded
2013 in the SPARC sun4v architecture.
2015 To compile this driver as a module, choose M here. The module will
2016 be called sun4v_wdt.
2018 # XTENSA Architecture
2023 tristate "Xen Watchdog support"
2025 select WATCHDOG_CORE
2027 Say Y here to support the hypervisor watchdog capability provided
2028 by Xen 4.0 and newer. The watchdog timeout period is normally one
2029 minute but can be changed with a boot-time parameter.
2032 tristate "UML watchdog"
2033 depends on UML || COMPILE_TEST
2036 # ISA-based Watchdog Cards
2039 comment "ISA-based Watchdog Cards"
2043 tristate "Berkshire Products ISA-PC Watchdog"
2046 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2047 This card simply watches your kernel to make sure it doesn't freeze,
2048 and if it does, it reboots your computer after a certain amount of
2049 time. This driver is like the WDT501 driver but for different
2050 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>.
2051 The PC watchdog cards can be ordered from <http://www.berkprod.com/>.
2053 To compile this driver as a module, choose M here: the
2054 module will be called pcwd.
2056 Most people will say N.
2059 tristate "Mixcom Watchdog"
2062 This is a driver for the Mixcom hardware watchdog cards. This
2063 watchdog simply watches your kernel to make sure it doesn't freeze,
2064 and if it does, it reboots your computer after a certain amount of
2067 To compile this driver as a module, choose M here: the
2068 module will be called mixcomwd.
2070 Most people will say N.
2073 tristate "WDT Watchdog timer"
2076 If you have a WDT500P or WDT501P watchdog board, say Y here,
2077 otherwise N. It is not possible to probe for this board, which means
2078 that you have to inform the kernel about the IO port and IRQ that
2079 is needed (you can do this via the io and irq parameters)
2081 To compile this driver as a module, choose M here: the
2082 module will be called wdt.
2085 # PCI-based Watchdog Cards
2088 comment "PCI-based Watchdog Cards"
2091 config PCIPCWATCHDOG
2092 tristate "Berkshire Products PCI-PC Watchdog"
2095 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2096 This card simply watches your kernel to make sure it doesn't freeze,
2097 and if it does, it reboots your computer after a certain amount of
2098 time. The card can also monitor the internal temperature of the PC.
2099 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2101 To compile this driver as a module, choose M here: the
2102 module will be called pcwd_pci.
2104 Most people will say N.
2107 tristate "PCI-WDT500/501 Watchdog timer"
2110 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2112 If you have a PCI-WDT501 watchdog board then you can enable the
2113 temperature sensor by setting the type parameter to 501.
2115 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2116 can do this via the tachometer parameter. Only do this if you have a
2117 fan tachometer actually set up.
2119 To compile this driver as a module, choose M here: the
2120 module will be called wdt_pci.
2123 # USB-based Watchdog Cards
2126 comment "USB-based Watchdog Cards"
2129 config USBPCWATCHDOG
2130 tristate "Berkshire Products USB-PC Watchdog"
2133 This is the driver for the Berkshire Products USB-PC Watchdog card.
2134 This card simply watches your kernel to make sure it doesn't freeze,
2135 and if it does, it reboots your computer after a certain amount of
2136 time. The card can also monitor the internal temperature of the PC.
2137 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2139 To compile this driver as a module, choose M here: the
2140 module will be called pcwd_usb.
2142 Most people will say N.
2144 config KEEMBAY_WATCHDOG
2145 tristate "Intel Keem Bay SoC non-secure watchdog"
2146 depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
2147 select WATCHDOG_CORE
2149 This option enable support for an In-secure watchdog timer driver for
2150 Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every
2151 count unit. An interrupt will be triggered, when the count crosses
2152 the threshold configured in the register.
2154 To compile this driver as a module, choose M here: the
2155 module will be called keembay_wdt.