1 # SPDX-License-Identifier: GPL-2.0-only
4 # Watchdog device configuration
8 bool "Watchdog Timer Support"
10 If you say Y here (and to one of the following options) and create a
11 character special file /dev/watchdog with major number 10 and minor
12 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
13 subsequently opening the file and then failing to write to it for
14 longer than 1 minute will result in rebooting the machine. This
15 could be useful for a networked machine that needs to come back
16 on-line as fast as possible after a lock-up. There's both a watchdog
17 implementation entirely in software (which can sometimes fail to
18 reboot the machine) and a driver for hardware watchdog boards, which
19 are more robust and can also keep track of the temperature inside
20 your computer. For details, read
21 <file:Documentation/watchdog/watchdog-api.rst> in the kernel source.
23 The watchdog is usually used together with the watchdog daemon
24 which is available from
25 <https://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon
26 can also monitor NFS connections and can reboot the machine when the
27 process table is full.
34 tristate "WatchDog Timer Driver Core"
36 Say Y here if you want to use the new watchdog timer driver core.
37 This driver provides a framework for all watchdog timer drivers
38 and gives them the /dev/watchdog interface (and later also the
41 config WATCHDOG_NOWAYOUT
42 bool "Disable watchdog shutdown on close"
44 The default watchdog behaviour (which you get if you say N here) is
45 to stop the timer if the process managing it closes the file
46 /dev/watchdog. It's always remotely possible that this process might
47 get killed. If you say Y here, the watchdog cannot be stopped once
50 config WATCHDOG_HANDLE_BOOT_ENABLED
51 bool "Update boot-enabled watchdog until userspace takes over"
54 The default watchdog behaviour (which you get if you say Y here) is
55 to ping watchdog devices that were enabled before the driver has
56 been loaded until control is taken over from userspace using the
57 /dev/watchdog file. If you say N here, the kernel will not update
58 the watchdog on its own. Thus if your userspace does not start fast
59 enough your device will reboot.
61 config WATCHDOG_OPEN_TIMEOUT
62 int "Timeout value for opening watchdog device"
65 The maximum time, in seconds, for which the watchdog framework takes
66 care of pinging a hardware watchdog. A value of 0 means infinite. The
67 value set here can be overridden by the commandline parameter
68 "watchdog.open_timeout".
71 bool "Read different watchdog information through sysfs"
73 Say Y here if you want to enable watchdog device status read through
76 config WATCHDOG_HRTIMER_PRETIMEOUT
77 bool "Enable watchdog hrtimer-based pretimeouts"
79 Enable this if you want to use a hrtimer timer based pretimeout for
80 watchdogs that do not natively support pretimeout support. Be aware
81 that because this pretimeout functionality uses hrtimers, it may not
82 be able to fire before the actual watchdog fires in some situations.
84 comment "Watchdog Pretimeout Governors"
86 config WATCHDOG_PRETIMEOUT_GOV
87 bool "Enable watchdog pretimeout governors"
88 depends on WATCHDOG_CORE
90 The option allows to select watchdog pretimeout governors.
92 config WATCHDOG_PRETIMEOUT_GOV_SEL
94 depends on WATCHDOG_PRETIMEOUT_GOV
96 select WATCHDOG_PRETIMEOUT_GOV_PANIC if WATCHDOG_PRETIMEOUT_GOV_NOOP=n
98 if WATCHDOG_PRETIMEOUT_GOV
100 config WATCHDOG_PRETIMEOUT_GOV_NOOP
101 tristate "Noop watchdog pretimeout governor"
102 depends on WATCHDOG_CORE
103 default WATCHDOG_CORE
105 Noop watchdog pretimeout governor, only an informational
106 message is added to kernel log buffer.
108 config WATCHDOG_PRETIMEOUT_GOV_PANIC
109 tristate "Panic watchdog pretimeout governor"
110 depends on WATCHDOG_CORE
111 default WATCHDOG_CORE
113 Panic watchdog pretimeout governor, on watchdog pretimeout
114 event put the kernel into panic.
117 prompt "Default Watchdog Pretimeout Governor"
118 default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
120 This option selects a default watchdog pretimeout governor.
121 The governor takes its action, if a watchdog is capable
122 to report a pretimeout event.
124 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP
126 depends on WATCHDOG_PRETIMEOUT_GOV_NOOP
128 Use noop watchdog pretimeout governor by default. If noop
129 governor is selected by a user, write a short message to
130 the kernel log buffer and don't do any system changes.
132 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
134 depends on WATCHDOG_PRETIMEOUT_GOV_PANIC
136 Use panic watchdog pretimeout governor by default, if
137 a watchdog pretimeout event happens, consider that
138 a watchdog feeder is dead and reboot is unavoidable.
142 endif # WATCHDOG_PRETIMEOUT_GOV
145 # General Watchdog drivers
148 comment "Watchdog Device Drivers"
150 # Architecture Independent
153 tristate "Software watchdog"
156 A software monitoring watchdog. This will fail to reboot your system
157 from some situations that the hardware watchdog will recover
158 from. Equally it's a lot cheaper to install.
160 To compile this driver as a module, choose M here: the
161 module will be called softdog.
163 config SOFT_WATCHDOG_PRETIMEOUT
164 bool "Software watchdog pretimeout governor support"
165 depends on SOFT_WATCHDOG && WATCHDOG_PRETIMEOUT_GOV
167 Enable this if you want to use pretimeout governors with the software
168 watchdog. Be aware that governors might affect the watchdog because it
169 is purely software, e.g. the panic governor will stall it!
171 config BD957XMUF_WATCHDOG
172 tristate "ROHM BD9576MUF and BD9573MUF PMIC Watchdog"
173 depends on MFD_ROHM_BD957XMUF
176 Support for the watchdog in the ROHM BD9576 and BD9573 PMICs.
177 These PMIC ICs contain watchdog block which can be configured
178 to toggle reset line if SoC fails to ping watchdog via GPIO.
180 Say Y here to include support for the ROHM BD9576 or BD9573
181 watchdog. Alternatively say M to compile the driver as a module,
182 which will be called bd9576_wdt.
184 config DA9052_WATCHDOG
185 tristate "Dialog DA9052 Watchdog"
186 depends on PMIC_DA9052 || COMPILE_TEST
189 Support for the watchdog in the DA9052 PMIC. Watchdog trigger
192 Say Y here to include support for the DA9052 watchdog.
193 Alternatively say M to compile the driver as a module,
194 which will be called da9052_wdt.
196 config DA9055_WATCHDOG
197 tristate "Dialog Semiconductor DA9055 Watchdog"
198 depends on MFD_DA9055 || COMPILE_TEST
201 If you say yes here you get support for watchdog on the Dialog
202 Semiconductor DA9055 PMIC.
204 This driver can also be built as a module. If so, the module
205 will be called da9055_wdt.
207 config DA9063_WATCHDOG
208 tristate "Dialog DA9063 Watchdog"
209 depends on MFD_DA9063 || COMPILE_TEST
213 Support for the watchdog in the DA9063 PMIC.
215 This driver can be built as a module. The module name is da9063_wdt.
217 config DA9062_WATCHDOG
218 tristate "Dialog DA9062/61 Watchdog"
219 depends on MFD_DA9062 || COMPILE_TEST
223 Support for the watchdog in the DA9062 and DA9061 PMICs.
225 This driver can be built as a module. The module name is da9062_wdt.
228 tristate "Watchdog device controlled through GPIO-line"
232 If you say yes here you get support for watchdog device
233 controlled through GPIO-line.
235 config GPIO_WATCHDOG_ARCH_INITCALL
236 bool "Register the watchdog as early as possible"
237 depends on GPIO_WATCHDOG=y
239 In some situations, the default initcall level (module_init)
240 in not early enough in the boot process to avoid the watchdog
242 If you say yes here, the initcall level would be raised to
246 config MENF21BMC_WATCHDOG
247 tristate "MEN 14F021P00 BMC Watchdog"
248 depends on MFD_MENF21BMC || COMPILE_TEST
252 Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
254 This driver can also be built as a module. If so the module
255 will be called menf21bmc_wdt.
257 config MENZ069_WATCHDOG
258 tristate "MEN 16Z069 Watchdog"
262 Say Y here to include support for the MEN 16Z069 Watchdog.
264 This driver can also be built as a module. If so the module
265 will be called menz069_wdt.
268 tristate "ACPI Watchdog Action Table (WDAT)"
273 This driver adds support for systems with ACPI Watchdog Action
274 Table (WDAT) table. Servers typically have this but it can be
275 found on some desktop machines as well. This driver will take
276 over the native iTCO watchdog driver found on many Intel CPUs.
278 To compile this driver as module, choose M here: the module will
281 config WM831X_WATCHDOG
282 tristate "WM831x watchdog"
283 depends on MFD_WM831X
286 Support for the watchdog in the WM831x AudioPlus PMICs. When
287 the watchdog triggers the system will be reset.
289 config WM8350_WATCHDOG
290 tristate "WM8350 watchdog"
291 depends on MFD_WM8350
294 Support for the watchdog in the WM8350 AudioPlus PMIC. When
295 the watchdog triggers the system will be reset.
297 config XILINX_WATCHDOG
298 tristate "Xilinx Watchdog timer"
302 Watchdog driver for the xps_timebase_wdt IP core.
304 To compile this driver as a module, choose M here: the
305 module will be called of_xilinx_wdt.
307 config ZIIRAVE_WATCHDOG
308 tristate "Zodiac RAVE Watchdog Timer"
312 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
315 To compile this driver as a module, choose M here: the
316 module will be called ziirave_wdt.
318 config RAVE_SP_WATCHDOG
319 tristate "RAVE SP Watchdog timer"
320 depends on RAVE_SP_CORE
321 depends on NVMEM || !NVMEM
324 Support for the watchdog on RAVE SP device.
327 tristate "Mellanox Watchdog"
328 depends on MELLANOX_PLATFORM
332 This is the driver for the hardware watchdog on Mellanox systems.
333 If you are going to use it, say Y here, otherwise N.
334 This driver can be used together with the watchdog daemon.
335 It can also watch your kernel to make sure it doesn't freeze,
336 and if it does, it reboots your system after a certain amount of
339 To compile this driver as a module, choose M here: the
340 module will be called mlx-wdt.
342 config SL28CPLD_WATCHDOG
343 tristate "Kontron sl28cpld Watchdog"
344 depends on MFD_SL28CPLD || COMPILE_TEST
347 Say Y here to include support for the watchdog timer
348 on the Kontron sl28 CPLD.
350 To compile this driver as a module, choose M here: the
351 module will be called sl28cpld_wdt.
357 config ARM_SP805_WATCHDOG
358 tristate "ARM SP805 Watchdog"
359 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
362 ARM Primecell SP805 Watchdog timer. This will reboot your system when
363 the timeout is reached.
365 config ARM_SBSA_WATCHDOG
366 tristate "ARM SBSA Generic Watchdog"
368 depends on ARM_ARCH_TIMER
371 ARM SBSA Generic Watchdog has two stage timeouts:
372 the first signal (WS0) is for alerting the system by interrupt,
373 the second one (WS1) is a real hardware reset.
374 More details: ARM DEN0029B - Server Base System Architecture (SBSA)
376 This driver can operate ARM SBSA Generic Watchdog as a single stage
377 or a two stages watchdog, it depends on the module parameter "action".
379 Note: the maximum timeout in the two stages mode is half of that in
380 the single stage mode.
382 To compile this driver as module, choose M here: The module
383 will be called sbsa_gwdt.
385 config ARMADA_37XX_WATCHDOG
386 tristate "Armada 37xx watchdog"
387 depends on ARCH_MVEBU || COMPILE_TEST
392 Say Y here to include support for the watchdog timer found on
393 Marvell Armada 37xx SoCs.
394 To compile this driver as a module, choose M here: the
395 module will be called armada_37xx_wdt.
397 config ASM9260_WATCHDOG
398 tristate "Alphascale ASM9260 watchdog"
399 depends on MACH_ASM9260 || COMPILE_TEST
402 select RESET_CONTROLLER
404 Watchdog timer embedded into Alphascale asm9260 chips. This will
405 reboot your system when the timeout is reached.
407 config AT91RM9200_WATCHDOG
408 tristate "AT91RM9200 watchdog"
409 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
411 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
412 system when the timeout is reached.
414 config AT91SAM9X_WATCHDOG
415 tristate "AT91SAM9X / AT91CAP9 watchdog"
416 depends on ARCH_AT91 || COMPILE_TEST
419 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
420 reboot your system when the timeout is reached.
422 config SAMA5D4_WATCHDOG
423 tristate "Atmel SAMA5D4 Watchdog Timer"
424 depends on ARCH_AT91 || COMPILE_TEST
427 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
428 Its Watchdog Timer Mode Register can be written more than once.
429 This will reboot your system when the timeout is reached.
431 config CADENCE_WATCHDOG
432 tristate "Cadence Watchdog Timer"
436 Say Y here if you want to include support for the watchdog
437 timer in the Xilinx Zynq.
439 config 21285_WATCHDOG
440 tristate "DC21285 watchdog"
441 depends on FOOTBRIDGE
443 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
444 here if you wish to use this. Alternatively say M to compile the
445 driver as a module, which will be called wdt285.
447 This driver does not work on all machines. In particular, early CATS
448 boards have hardware problems that will cause the machine to simply
449 lock up if the watchdog fires.
451 "If in doubt, leave it out" - say N.
454 tristate "NetWinder WB83C977 watchdog"
455 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
457 Say Y here to include support for the WB977 watchdog included in
458 NetWinder machines. Alternatively say M to compile the driver as
459 a module, which will be called wdt977.
461 Not sure? It's safe to say N.
463 config FTWDT010_WATCHDOG
464 tristate "Faraday Technology FTWDT010 watchdog"
465 depends on ARM || COMPILE_TEST
469 Say Y here if to include support for the Faraday Technology
470 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
473 To compile this driver as a module, choose M here: the
474 module will be called ftwdt010_wdt.
476 config IXP4XX_WATCHDOG
477 tristate "IXP4xx Watchdog"
478 depends on ARCH_IXP4XX
481 Say Y here if to include support for the watchdog timer
482 in the Intel IXP4xx network processors. This driver can
483 be built as a module by choosing M. The module will
484 be called ixp4xx_wdt.
486 Note: The internal IXP4xx watchdog does a soft CPU reset
487 which doesn't reset any peripherals. There are circumstances
488 where the watchdog will fail to reset the board correctly
489 (e.g., if the boot ROM is in an unreadable state).
491 Say N if you are unsure.
493 config S3C2410_WATCHDOG
494 tristate "S3C2410 Watchdog"
495 depends on ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || \
498 select MFD_SYSCON if ARCH_EXYNOS
500 Watchdog timer block in the Samsung S3C24xx, S3C64xx, S5Pv210 and
501 Exynos SoCs. This will reboot the system when the timer expires with
502 the watchdog enabled.
504 The driver is limited by the speed of the system's PCLK
505 signal, so with reasonably fast systems (PCLK around 50-66MHz)
506 then watchdog intervals of over approximately 20seconds are
509 Choose Y/M here only if you build for such Samsung SoC.
510 The driver can be built as a module by choosing M, and will
511 be called s3c2410_wdt.
513 config SA1100_WATCHDOG
514 tristate "SA1100/PXA2xx watchdog"
515 depends on ARCH_SA1100 || ARCH_PXA
517 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
518 reboot your system when timeout is reached.
520 NOTE: once enabled, this timer cannot be disabled.
522 To compile this driver as a module, choose M here: the
523 module will be called sa1100_wdt.
526 tristate "Synopsys DesignWare watchdog"
530 Say Y here if to include support for the Synopsys DesignWare
531 watchdog timer found in many chips.
532 To compile this driver as a module, choose M here: the
533 module will be called dw_wdt.
535 config EP93XX_WATCHDOG
536 tristate "EP93xx Watchdog"
537 depends on ARCH_EP93XX || COMPILE_TEST
540 Say Y here if to include support for the watchdog timer
541 embedded in the Cirrus Logic EP93xx family of devices.
543 To compile this driver as a module, choose M here: the
544 module will be called ep93xx_wdt.
547 tristate "OMAP Watchdog"
548 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
551 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog.
552 Say 'Y' here to enable the
553 OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
555 config PNX4008_WATCHDOG
556 tristate "LPC32XX Watchdog"
557 depends on ARCH_LPC32XX || COMPILE_TEST
560 Say Y here if to include support for the watchdog timer
561 in the LPC32XX processor.
562 This driver can be built as a module by choosing M. The module
563 will be called pnx4008_wdt.
565 Say N if you are unsure.
567 config DAVINCI_WATCHDOG
568 tristate "DaVinci watchdog"
569 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
572 Say Y here if to include support for the watchdog timer
573 in the DaVinci DM644x/DM646x or Keystone processors.
574 To compile this driver as a module, choose M here: the
575 module will be called davinci_wdt.
577 NOTE: once enabled, this timer cannot be disabled.
578 Say N if you are unsure.
580 config K3_RTI_WATCHDOG
581 tristate "Texas Instruments K3 RTI watchdog"
582 depends on ARCH_K3 || COMPILE_TEST
585 Say Y here if you want to include support for the K3 watchdog
586 timer (RTI module) available in the K3 generation of processors.
588 config ORION_WATCHDOG
589 tristate "Orion watchdog"
590 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST
594 Say Y here if to include support for the watchdog timer
595 in the Marvell Orion5x and Kirkwood ARM SoCs.
596 To compile this driver as a module, choose M here: the
597 module will be called orion_wdt.
599 config RN5T618_WATCHDOG
600 tristate "Ricoh RN5T618 watchdog"
601 depends on MFD_RN5T618 || COMPILE_TEST
604 If you say yes here you get support for watchdog on the Ricoh
607 This driver can also be built as a module. If so, the module
608 will be called rn5t618_wdt.
610 config SUNXI_WATCHDOG
611 tristate "Allwinner SoCs watchdog support"
612 depends on ARCH_SUNXI || COMPILE_TEST
615 Say Y here to include support for the watchdog timer
617 To compile this driver as a module, choose M here: the
618 module will be called sunxi_wdt.
620 config NPCM7XX_WATCHDOG
621 tristate "Nuvoton NPCM750 watchdog"
622 depends on ARCH_NPCM || COMPILE_TEST
623 default y if ARCH_NPCM7XX
626 Say Y here to include Watchdog timer support for the
627 watchdog embedded into the NPCM7xx.
628 This watchdog is used to reset the system and thus cannot be
629 compiled as a module.
631 config TWL4030_WATCHDOG
632 tristate "TWL4030 Watchdog"
633 depends on TWL4030_CORE
636 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
637 watchdog timer support for TWL4030 chips.
639 config STMP3XXX_RTC_WATCHDOG
640 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
641 depends on RTC_DRV_STMP || COMPILE_TEST
644 Say Y here to include support for the watchdog timer inside
645 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
646 To compile this driver as a module, choose M here: the
647 module will be called stmp3xxx_rtc_wdt.
649 config TS4800_WATCHDOG
650 tristate "TS-4800 Watchdog"
651 depends on HAS_IOMEM && OF
652 depends on SOC_IMX51 || COMPILE_TEST
656 Technologic Systems TS-4800 has watchdog timer implemented in
657 an external FPGA. Say Y here if you want to support for the
658 watchdog timer on TS-4800 board.
660 config TS72XX_WATCHDOG
661 tristate "TS-72XX SBC Watchdog"
662 depends on MACH_TS72XX || COMPILE_TEST
665 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
666 watchdog timer implemented in a external CPLD chip. Say Y here
667 if you want to support for the watchdog timer on TS-72XX boards.
669 To compile this driver as a module, choose M here: the
670 module will be called ts72xx_wdt.
672 config MAX63XX_WATCHDOG
673 tristate "Max63xx watchdog"
677 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
679 config MAX77620_WATCHDOG
680 tristate "Maxim Max77620 Watchdog Timer"
681 depends on MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST
684 This is the driver for the Max77620 watchdog timer.
685 Say 'Y' here to enable the watchdog timer support for
686 MAX77620 chips. To compile this driver as a module,
687 choose M here: the module will be called max77620_wdt.
690 tristate "IMX2+ Watchdog"
691 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
695 This is the driver for the hardware watchdog
696 on the Freescale IMX2 and later processors.
697 If you have one of these processors and wish to have
698 watchdog support enabled, say Y, otherwise say N.
700 To compile this driver as a module, choose M here: the
701 module will be called imx2_wdt.
704 tristate "IMX SC Watchdog"
705 depends on HAVE_ARM_SMCCC
709 This is the driver for the system controller watchdog
710 on the NXP i.MX SoCs with system controller inside, the
711 watchdog driver will call ARM SMC API and trap into
712 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
713 will request system controller to execute the operations.
714 If you have one of these processors and wish to have
715 watchdog support enabled, say Y, otherwise say N.
717 To compile this driver as a module, choose M here: the
718 module will be called imx_sc_wdt.
721 tristate "IMX7ULP Watchdog"
722 depends on ARCH_MXC || COMPILE_TEST
725 This is the driver for the hardware watchdog on the Freescale
726 IMX7ULP and later processors. If you have one of these
727 processors and wish to have watchdog support enabled,
728 say Y, otherwise say N.
730 To compile this driver as a module, choose M here: the
731 module will be called imx7ulp_wdt.
733 config DB500_WATCHDOG
734 tristate "ST-Ericsson DB800 watchdog"
735 depends on MFD_DB8500_PRCMU
739 Say Y here to include Watchdog timer support for the watchdog
740 existing in the prcmu of ST-Ericsson DB8500 platform.
742 To compile this driver as a module, choose M here: the
743 module will be called db500_wdt.
746 tristate "Retu watchdog"
750 Retu watchdog driver for Nokia Internet Tablets (770, N800,
751 N810). At least on N800 the watchdog cannot be disabled, so
752 this driver is essential and you should enable it.
754 To compile this driver as a module, choose M here: the
755 module will be called retu_wdt.
758 tristate "MOXART watchdog"
759 depends on ARCH_MOXART || COMPILE_TEST
761 Say Y here to include Watchdog timer support for the watchdog
762 existing on the MOXA ART SoC series platforms.
764 To compile this driver as a module, choose M here: the
765 module will be called moxart_wdt.
767 config ST_LPC_WATCHDOG
768 tristate "STMicroelectronics LPC Watchdog"
769 depends on ARCH_STI || COMPILE_TEST
773 Say Y here to include STMicroelectronics Low Power Controller
774 (LPC) based Watchdog timer support.
776 To compile this driver as a module, choose M here: the
777 module will be called st_lpc_wdt.
779 config TEGRA_WATCHDOG
780 tristate "Tegra watchdog"
781 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
784 Say Y here to include support for the watchdog timer
785 embedded in NVIDIA Tegra SoCs.
787 To compile this driver as a module, choose M here: the
788 module will be called tegra_wdt.
791 tristate "QCOM watchdog"
793 depends on ARCH_QCOM || COMPILE_TEST
796 Say Y here to include Watchdog timer support for the watchdog found
797 on QCOM chipsets. Currently supported targets are the MSM8960,
798 APQ8064, and IPQ8064.
800 To compile this driver as a module, choose M here: the
801 module will be called qcom_wdt.
803 config MESON_GXBB_WATCHDOG
804 tristate "Amlogic Meson GXBB SoCs watchdog support"
805 depends on ARCH_MESON || COMPILE_TEST
808 Say Y here to include support for the watchdog timer
809 in Amlogic Meson GXBB SoCs.
810 To compile this driver as a module, choose M here: the
811 module will be called meson_gxbb_wdt.
813 config MESON_WATCHDOG
814 tristate "Amlogic Meson SoCs watchdog support"
815 depends on ARCH_MESON || COMPILE_TEST
818 Say Y here to include support for the watchdog timer
819 in Amlogic Meson SoCs.
820 To compile this driver as a module, choose M here: the
821 module will be called meson_wdt.
823 config MEDIATEK_WATCHDOG
824 tristate "Mediatek SoCs watchdog support"
825 depends on ARCH_MEDIATEK || COMPILE_TEST
826 default ARCH_MEDIATEK
828 select RESET_CONTROLLER
830 Say Y here to include support for the watchdog timer
832 To compile this driver as a module, choose M here: the
833 module will be called mtk_wdt.
835 config DIGICOLOR_WATCHDOG
836 tristate "Conexant Digicolor SoCs watchdog support"
837 depends on ARCH_DIGICOLOR || COMPILE_TEST
840 Say Y here to include support for the watchdog timer
841 in Conexant Digicolor SoCs.
842 To compile this driver as a module, choose M here: the
843 module will be called digicolor_wdt.
845 config ARM_SMC_WATCHDOG
846 tristate "ARM Secure Monitor Call based watchdog support"
847 depends on ARM || ARM64
849 depends on HAVE_ARM_SMCCC
852 Say Y here to include support for a watchdog timer
853 implemented by the EL3 Secure Monitor on ARM platforms.
854 Requires firmware support.
855 To compile this driver as a module, choose M here: the
856 module will be called arm_smc_wdt.
858 config LPC18XX_WATCHDOG
859 tristate "LPC18xx/43xx Watchdog"
860 depends on ARCH_LPC18XX || COMPILE_TEST
864 Say Y here if to include support for the watchdog timer
865 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
867 To compile this driver as a module, choose M here: the
868 module will be called lpc18xx_wdt.
871 tristate "Renesas WDT Watchdog"
872 depends on ARCH_RENESAS || COMPILE_TEST
875 This driver adds watchdog support for the integrated watchdogs in the
876 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
878 config RENESAS_RZAWDT
879 tristate "Renesas RZ/A WDT Watchdog"
880 depends on ARCH_RENESAS || COMPILE_TEST
883 This driver adds watchdog support for the integrated watchdogs in the
884 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
886 config RENESAS_RZN1WDT
887 tristate "Renesas RZ/N1 watchdog"
888 depends on ARCH_RENESAS || COMPILE_TEST
891 This driver adds watchdog support for the integrated watchdogs in the
892 Renesas RZ/N1 SoCs. These watchdogs can be used to reset a system.
894 config RENESAS_RZG2LWDT
895 tristate "Renesas RZ/G2L WDT Watchdog"
896 depends on ARCH_RENESAS || COMPILE_TEST
899 This driver adds watchdog support for the integrated watchdogs in the
900 Renesas RZ/G2L SoCs. These watchdogs can be used to reset a system.
902 config ASPEED_WATCHDOG
903 tristate "Aspeed BMC watchdog support"
904 depends on ARCH_ASPEED || COMPILE_TEST
907 Say Y here to include support for the watchdog timer
910 This driver is required to reboot the SoC.
912 To compile this driver as a module, choose M here: the
913 module will be called aspeed_wdt.
915 config STM32_WATCHDOG
916 tristate "STM32 Independent WatchDoG (IWDG) support"
917 depends on ARCH_STM32
921 Say Y here to include support for the watchdog timer
924 To compile this driver as a module, choose M here: the
925 module will be called stm32_iwdg.
927 config STPMIC1_WATCHDOG
928 tristate "STPMIC1 PMIC watchdog support"
929 depends on MFD_STPMIC1
932 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
933 If the watchdog timer expires, stpmic1 will shut down all its power
936 To compile this driver as a module, choose M here: the
937 module will be called spmic1_wdt.
939 config UNIPHIER_WATCHDOG
940 tristate "UniPhier watchdog support"
941 depends on ARCH_UNIPHIER || COMPILE_TEST
942 depends on OF && MFD_SYSCON
945 Say Y here to include support watchdog timer embedded
946 into the UniPhier system.
948 To compile this driver as a module, choose M here: the
949 module will be called uniphier_wdt.
951 config RTD119X_WATCHDOG
952 bool "Realtek RTD119x/RTD129x watchdog support"
953 depends on ARCH_REALTEK || COMPILE_TEST
958 Say Y here to include support for the watchdog timer in
959 Realtek RTD1295 SoCs.
961 config REALTEK_OTTO_WDT
962 tristate "Realtek Otto MIPS watchdog support"
963 depends on MACH_REALTEK_RTL || COMPILE_TEST
964 depends on COMMON_CLK
966 default MACH_REALTEK_RTL
968 Say Y here to include support for the watchdog timer on Realtek
969 RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout
970 notifications and system reset on timeout.
972 When built as a module this will be called realtek_otto_wdt.
975 tristate "Spreadtrum watchdog support"
976 depends on ARCH_SPRD || COMPILE_TEST
979 Say Y here to include watchdog timer supported
980 by Spreadtrum system.
982 config PM8916_WATCHDOG
983 tristate "QCOM PM8916 pmic watchdog"
984 depends on OF && MFD_SPMI_PMIC
987 Say Y here to include support watchdog timer embedded into the
990 config VISCONTI_WATCHDOG
991 tristate "Toshiba Visconti series watchdog support"
992 depends on ARCH_VISCONTI || COMPILE_TEST
995 Say Y here to include support for the watchdog timer in Toshiba
998 config MSC313E_WATCHDOG
999 tristate "MStar MSC313e watchdog"
1000 depends on ARCH_MSTARV7 || COMPILE_TEST
1001 select WATCHDOG_CORE
1003 Say Y here to include support for the Watchdog timer embedded
1004 into MStar MSC313e chips. This will reboot your system when the
1007 To compile this driver as a module, choose M here: the
1008 module will be called msc313e_wdt.
1010 config APPLE_WATCHDOG
1011 tristate "Apple SoC watchdog"
1012 depends on ARCH_APPLE || COMPILE_TEST
1013 select WATCHDOG_CORE
1015 Say Y here to include support for the Watchdog found in Apple
1016 SoCs such as the M1. Next to the common watchdog features this
1017 driver is also required in order to reboot these SoCs.
1019 To compile this driver as a module, choose M here: the
1020 module will be called apple_wdt.
1022 config SUNPLUS_WATCHDOG
1023 tristate "Sunplus watchdog support"
1024 depends on ARCH_SUNPLUS || COMPILE_TEST
1025 select WATCHDOG_CORE
1027 Say Y here to include support for the watchdog timer
1030 To compile this driver as a module, choose M here: the
1031 module will be called sunplus_wdt.
1033 # X86 (i386 + ia64 + x86_64) Architecture
1036 tristate "Acquire SBC Watchdog Timer"
1039 This is the driver for the hardware watchdog on Single Board
1040 Computers produced by Acquire Inc (and others). This watchdog
1041 simply watches your kernel to make sure it doesn't freeze, and if
1042 it does, it reboots your computer after a certain amount of time.
1044 To compile this driver as a module, choose M here: the
1045 module will be called acquirewdt.
1047 Most people will say N.
1049 config ADVANTECH_WDT
1050 tristate "Advantech SBC Watchdog Timer"
1053 If you are configuring a Linux kernel for the Advantech single-board
1054 computer, say `Y' here to support its built-in watchdog timer
1055 feature. More information can be found at
1056 <https://www.advantech.com.tw/products/>
1059 tristate "ALi M1535 PMU Watchdog Timer"
1060 depends on X86 && PCI
1062 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1064 To compile this driver as a module, choose M here: the
1065 module will be called alim1535_wdt.
1067 Most people will say N.
1070 tristate "ALi M7101 PMU Computer Watchdog"
1073 This is the driver for the hardware watchdog on the ALi M7101 PMU
1074 as used in the x86 Cobalt servers and also found in some
1075 SPARC Netra servers too.
1077 To compile this driver as a module, choose M here: the
1078 module will be called alim7101_wdt.
1080 Most people will say N.
1083 tristate "WinSystems EBC-C384 Watchdog Timer"
1086 select WATCHDOG_CORE
1088 Enables watchdog timer support for the watchdog timer on the
1089 WinSystems EBC-C384 motherboard. The timeout may be configured via
1090 the timeout module parameter.
1093 tristate "Exar Watchdog Timer"
1095 select WATCHDOG_CORE
1097 Enables watchdog timer support for the watchdog timer present
1098 in some Exar/MaxLinear UART chips like the XR28V38x.
1100 To compile this driver as a module, choose M here: the
1101 module will be called exar_wdt.
1104 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1106 select WATCHDOG_CORE
1108 This is the driver for the hardware watchdog on the Fintek F71808E,
1109 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1110 F81866 Super I/O controllers.
1112 You can compile this driver directly into the kernel, or use
1113 it as a module. The module will be called f71808e_wdt.
1116 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1117 depends on X86 && PCI
1118 select WATCHDOG_CORE
1120 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1121 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1122 the machine after its expiration. The expiration time can be
1123 configured with the "heartbeat" parameter.
1125 To compile this driver as a module, choose M here: the
1126 module will be called sp5100_tco.
1129 tristate "AMD Geode CS5535/CS5536 Watchdog"
1130 depends on CS5535_MFGPT
1132 This driver enables a watchdog capability built into the
1133 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1134 processors. This watchdog watches your kernel to make sure
1135 it doesn't freeze, and if it does, it reboots your computer after
1136 a certain amount of time.
1138 You can compile this driver directly into the kernel, or use
1139 it as a module. The module will be called geodewdt.
1142 tristate "AMD Elan SC520 processor Watchdog"
1143 depends on MELAN || COMPILE_TEST
1145 This is the driver for the hardware watchdog built in to the
1146 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1147 This watchdog simply watches your kernel to make sure it doesn't
1148 freeze, and if it does, it reboots your computer after a certain
1151 You can compile this driver directly into the kernel, or use
1152 it as a module. The module will be called sc520_wdt.
1154 config SBC_FITPC2_WATCHDOG
1155 tristate "Compulab SBC-FITPC2 watchdog"
1158 This is the driver for the built-in watchdog timer on the fit-PC2,
1159 fit-PC2i, CM-iAM single-board computers made by Compulab.
1161 It's possible to enable the watchdog timer either from BIOS (F2) or
1163 When the "Watchdog Timer Value" is enabled one can set 31-255 seconds
1166 Entering BIOS setup temporarily disables watchdog operation regardless
1167 of current state, so system will not be restarted while user is in
1170 Once the watchdog is enabled the system will be restarted every
1171 "Watchdog Timer Value" period, so to prevent it user can restart or
1172 disable the watchdog.
1174 To compile this driver as a module, choose M here: the
1175 module will be called sbc_fitpc2_wdt.
1177 Most people will say N.
1180 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1183 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1184 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1185 information are at <http://www.eurotech.it/>.
1188 tristate "IB700 SBC Watchdog Timer"
1191 This is the driver for the hardware watchdog on the IB700 Single
1192 Board Computer produced by TMC Technology (www.tmc-uk.com). This
1193 watchdog simply watches your kernel to make sure it doesn't freeze,
1194 and if it does, it reboots your computer after a certain amount of time.
1196 This driver is like the WDT501 driver but for slightly different
1199 To compile this driver as a module, choose M here: the
1200 module will be called ib700wdt.
1202 Most people will say N.
1205 tristate "IBM Automatic Server Restart"
1208 This is the driver for the IBM Automatic Server Restart watchdog
1209 timer built-in into some eServer xSeries machines.
1211 To compile this driver as a module, choose M here: the
1212 module will be called ibmasr.
1215 tristate "ICP Single Board Computer Watchdog Timer"
1218 This is a driver for the hardware watchdog on the ICP Single
1219 Board Computer. This driver is working on (at least) the following
1220 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1222 To compile this driver as a module, choose M here: the
1223 module will be called wafer5823wdt.
1226 tristate "Intel 6300ESB Timer/Watchdog"
1228 select WATCHDOG_CORE
1230 Hardware driver for the watchdog timer built into the Intel
1231 6300ESB controller hub.
1233 To compile this driver as a module, choose M here: the
1234 module will be called i6300esb.
1237 tristate "Intel Atom E6xx Watchdog"
1238 depends on X86 && PCI
1239 select WATCHDOG_CORE
1243 Hardware driver for the watchdog timer built into the Intel
1244 Atom E6XX (TunnelCreek) processor.
1246 To compile this driver as a module, choose M here: the
1247 module will be called ie6xx_wdt.
1249 config INTEL_MID_WATCHDOG
1250 tristate "Intel MID Watchdog Timer"
1251 depends on X86_INTEL_MID
1252 select WATCHDOG_CORE
1254 Watchdog timer driver built into the Intel SCU for Intel MID
1257 This driver currently supports only the watchdog evolution
1258 implementation in SCU, available for Merrifield generation.
1260 To compile this driver as a module, choose M here.
1263 tristate "Intel TCO Timer/Watchdog"
1264 depends on (X86 || IA64) && PCI
1265 select WATCHDOG_CORE
1266 depends on I2C || I2C=n
1267 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1268 select LPC_ICH if !EXPERT
1269 select I2C_I801 if !EXPERT && I2C
1271 Hardware driver for the intel TCO timer based watchdog devices.
1272 These drivers are included in the Intel 82801 I/O Controller
1273 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1276 The TCO (Total Cost of Ownership) timer is a watchdog timer
1277 that will reboot the machine after its second expiration. The
1278 expiration time can be configured with the "heartbeat" parameter.
1280 On some motherboards the driver may fail to reset the chipset's
1281 NO_REBOOT flag which prevents the watchdog from rebooting the
1282 machine. If this is the case you will get a kernel message like
1283 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1285 To compile this driver as a module, choose M here: the
1286 module will be called iTCO_wdt.
1288 config ITCO_VENDOR_SUPPORT
1289 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1292 Add vendor specific support to the intel TCO timer based watchdog
1293 devices. At this moment we only have additional support for some
1294 SuperMicro Inc. motherboards.
1297 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1300 This is the driver for the built-in watchdog timer on the IT8712F
1301 Super I/0 chipset used on many motherboards.
1303 If the driver does not work, then make sure that the game port in
1304 the BIOS is enabled.
1306 To compile this driver as a module, choose M here: the
1307 module will be called it8712f_wdt.
1310 tristate "IT87 Watchdog Timer"
1312 select WATCHDOG_CORE
1314 This is the driver for the hardware watchdog on the ITE IT8607,
1315 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1316 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1317 IT8783 Super I/O chips.
1319 This watchdog simply watches your kernel to make sure it doesn't
1320 freeze, and if it does, it reboots your computer after a certain
1323 To compile this driver as a module, choose M here: the module will
1327 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1328 select WATCHDOG_CORE
1329 depends on (ARM64 || X86) && PCI
1331 A software monitoring watchdog and NMI handling driver. This driver
1332 will detect lockups and provide a stack trace. This is a driver that
1333 will only load on an HP ProLiant system with a minimum of iLO2 support.
1334 To compile this driver as a module, choose M here: the module will be
1337 config HPWDT_NMI_DECODING
1338 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1339 depends on X86 && HP_WATCHDOG
1342 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1343 "Generate NMI to System" virtual button. When an NMI is claimed
1344 by the driver, panic is called.
1347 tristate "Kontron COM Watchdog Timer"
1348 depends on MFD_KEMPLD
1349 select WATCHDOG_CORE
1351 Support for the PLD watchdog on some Kontron ETX and COMexpress
1352 (ETXexpress) modules
1354 This driver can also be built as a module. If so, the module will be
1358 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1361 This is a driver for National Semiconductor PC87307/PC97307 hardware
1362 watchdog cards as found on the SC1200. This watchdog is mainly used
1363 for power management purposes and can be used to power down the device
1364 during inactivity periods (includes interrupt activity monitoring).
1366 To compile this driver as a module, choose M here: the
1367 module will be called sc1200wdt.
1369 Most people will say N.
1372 tristate "National Semiconductor SCx200 Watchdog"
1373 depends on SCx200 && PCI
1375 Enable the built-in watchdog timer support on the National
1376 Semiconductor SCx200 processors.
1378 If compiled as a module, it will be called scx200_wdt.
1381 tristate "NS PC87413 watchdog"
1384 This is the driver for the hardware watchdog on the PC87413 chipset
1385 This watchdog simply watches your kernel to make sure it doesn't
1386 freeze, and if it does, it reboots your computer after a certain
1389 To compile this driver as a module, choose M here: the
1390 module will be called pc87413_wdt.
1392 Most people will say N.
1395 tristate "nVidia TCO Timer/Watchdog"
1396 depends on X86 && PCI
1398 Hardware driver for the TCO timer built into the nVidia Hub family
1399 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1400 watchdog timer that will reboot the machine after its second
1401 expiration. The expiration time can be configured with the
1402 "heartbeat" parameter.
1404 On some motherboards the driver may fail to reset the chipset's
1405 NO_REBOOT flag which prevents the watchdog from rebooting the
1406 machine. If this is the case you will get a kernel message like
1407 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1409 To compile this driver as a module, choose M here: the
1410 module will be called nv_tco.
1413 tristate "RDC R-321x SoC watchdog"
1414 depends on X86_RDC321X || COMPILE_TEST
1417 This is the driver for the built in hardware watchdog
1418 in the RDC R-321x SoC.
1420 To compile this driver as a module, choose M here: the
1421 module will be called rdc321x_wdt.
1424 tristate "SBC-60XX Watchdog Timer"
1427 This driver can be used with the watchdog timer found on some
1428 single board computers, namely the 6010 PII based computer.
1429 It may well work with other cards. It reads port 0x443 to enable
1430 and re-set the watchdog timer, and reads port 0x45 to disable
1431 the watchdog. If you have a card that behave in similar ways,
1432 you can probably make this driver work with your card as well.
1434 You can compile this driver directly into the kernel, or use
1435 it as a module. The module will be called sbc60xxwdt.
1438 tristate "SBC8360 Watchdog Timer"
1442 This is the driver for the hardware watchdog on the SBC8360 Single
1443 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1445 To compile this driver as a module, choose M here: the
1446 module will be called sbc8360.
1448 Most people will say N.
1451 tristate "SBC Nano 7240 Watchdog Timer"
1452 depends on X86_32 && !UML
1454 This is the driver for the hardware watchdog found on the IEI
1455 single board computers EPIC Nano 7240 (and likely others). This
1456 watchdog simply watches your kernel to make sure it doesn't freeze,
1457 and if it does, it reboots your computer after a certain amount of
1460 To compile this driver as a module, choose M here: the
1461 module will be called sbc7240_wdt.
1464 tristate "SMA CPU5 Watchdog"
1468 To compile this driver as a module, choose M here: the
1469 module will be called cpu5wdt.
1471 config SMSC_SCH311X_WDT
1472 tristate "SMSC SCH311X Watchdog Timer"
1475 This is the driver for the hardware watchdog timer on the
1476 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1477 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1480 To compile this driver as a module, choose M here: the
1481 module will be called sch311x_wdt.
1483 config SMSC37B787_WDT
1484 tristate "Winbond SMsC37B787 Watchdog Timer"
1487 This is the driver for the hardware watchdog component on the
1488 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1489 from Vision Systems and maybe others.
1491 This watchdog simply watches your kernel to make sure it doesn't
1492 freeze, and if it does, it reboots your computer after a certain
1495 Usually a userspace daemon will notify the kernel WDT driver that
1496 userspace is still alive, at regular intervals.
1498 To compile this driver as a module, choose M here: the
1499 module will be called smsc37b787_wdt.
1501 Most people will say N.
1504 tristate "TQ-Systems TQMX86 Watchdog Timer"
1506 select WATCHDOG_CORE
1508 This is the driver for the hardware watchdog timer in the TQMX86 IO
1509 controller found on some of their ComExpress Modules.
1511 To compile this driver as a module, choose M here; the module
1512 will be called tqmx86_wdt.
1514 Most people will say N.
1517 tristate "VIA Watchdog Timer"
1518 depends on X86 && PCI
1519 select WATCHDOG_CORE
1521 This is the driver for the hardware watchdog timer on VIA
1522 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1524 To compile this driver as a module, choose M here; the module
1525 will be called via_wdt.
1527 Most people will say N.
1530 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1532 select WATCHDOG_CORE
1534 This is the driver for the hardware watchdog on the following
1536 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1550 This watchdog simply watches your kernel to make sure it doesn't
1551 freeze, and if it does, it reboots your computer after a certain
1554 To compile this driver as a module, choose M here: the
1555 module will be called w83627hf_wdt.
1557 Most people will say N.
1560 tristate "W83877F (EMACS) Watchdog Timer"
1563 This is the driver for the hardware watchdog on the W83877F chipset
1564 as used in EMACS PC-104 motherboards (and likely others). This
1565 watchdog simply watches your kernel to make sure it doesn't freeze,
1566 and if it does, it reboots your computer after a certain amount of
1569 To compile this driver as a module, choose M here: the
1570 module will be called w83877f_wdt.
1572 Most people will say N.
1575 tristate "W83977F (PCM-5335) Watchdog Timer"
1578 This is the driver for the hardware watchdog on the W83977F I/O chip
1579 as used in AAEON's PCM-5335 SBC (and likely others). This
1580 watchdog simply watches your kernel to make sure it doesn't freeze,
1581 and if it does, it reboots your computer after a certain amount of
1584 To compile this driver as a module, choose M here: the
1585 module will be called w83977f_wdt.
1588 tristate "ZF MachZ Watchdog"
1591 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1592 N. This is the driver for the watchdog timer built-in on that
1593 processor using ZF-Logic interface. This watchdog simply watches
1594 your kernel to make sure it doesn't freeze, and if it does, it
1595 reboots your computer after a certain amount of time.
1597 To compile this driver as a module, choose M here: the
1598 module will be called machzwd.
1600 config SBC_EPX_C3_WATCHDOG
1601 tristate "Winsystems SBC EPX-C3 watchdog"
1604 This is the driver for the built-in watchdog timer on the EPX-C3
1605 Single-board computer made by Winsystems, Inc.
1607 *Note*: This hardware watchdog is not probeable and thus there
1608 is no way to know if writing to its IO address will corrupt
1609 your system or have any real effect. The only way to be sure
1610 that this driver does what you want is to make sure you
1611 are running it on an EPX-C3 from Winsystems with the watchdog
1612 timer at IO address 0x1ee and 0x1ef. It will write to both those
1613 IO ports. Basically, the assumption is made that if you compile
1614 this driver into your kernel and/or load it as a module, that you
1615 know what you are doing and that you are in fact running on an
1618 To compile this driver as a module, choose M here: the
1619 module will be called sbc_epx_c3.
1621 config INTEL_MEI_WDT
1622 tristate "Intel MEI iAMT Watchdog"
1623 depends on INTEL_MEI && X86
1624 select WATCHDOG_CORE
1626 A device driver for the Intel MEI iAMT watchdog.
1628 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1629 Whenever the OS hangs or crashes, iAMT will send an event
1630 to any subscriber to this event. The watchdog doesn't reset the
1633 To compile this driver as a module, choose M here:
1634 the module will be called mei_wdt.
1637 tristate "NI 903x/913x Watchdog"
1638 depends on X86 && ACPI
1639 select WATCHDOG_CORE
1641 This is the driver for the watchdog timer on the National Instruments
1642 903x/913x real-time controllers.
1644 To compile this driver as a module, choose M here: the module will be
1648 tristate "NIC7018 Watchdog"
1649 depends on X86 && ACPI
1650 select WATCHDOG_CORE
1652 Support for National Instruments NIC7018 Watchdog.
1654 To compile this driver as a module, choose M here: the module will be
1657 config SIEMENS_SIMATIC_IPC_WDT
1658 tristate "Siemens Simatic IPC Watchdog"
1659 depends on SIEMENS_SIMATIC_IPC
1660 select WATCHDOG_CORE
1663 This driver adds support for several watchdogs found in Industrial
1666 To compile this driver as a module, choose M here: the module will be
1667 called simatic-ipc-wdt.
1671 config M54xx_WATCHDOG
1672 tristate "MCF54xx watchdog support"
1675 To compile this driver as a module, choose M here: the
1676 module will be called m54xx_wdt.
1678 # MicroBlaze Architecture
1683 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1684 depends on ATH79 || (ARM && COMPILE_TEST)
1686 Hardware driver for the built-in watchdog timer on the Atheros
1687 AR71XX/AR724X/AR913X SoCs.
1690 tristate "Broadcom BCM47xx Watchdog Timer"
1691 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1692 select WATCHDOG_CORE
1694 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1697 tristate "IDT RC32434 SoC Watchdog Timer"
1698 depends on MIKROTIK_RB532
1700 Hardware driver for the IDT RC32434 SoC built-in
1703 To compile this driver as a module, choose M here: the
1704 module will be called rc32434_wdt.
1707 tristate "Indy/I2 Hardware Watchdog"
1708 depends on SGI_HAS_INDYDOG
1710 Hardware driver for the Indy's/I2's watchdog. This is a
1711 watchdog timer that will reboot the machine after a 60 second
1712 timer expired and no process has written to /dev/watchdog during
1716 tristate "Ingenic jz4740 SoC hardware watchdog"
1718 depends on COMMON_CLK
1719 select WATCHDOG_CORE
1722 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1725 tristate "MTX-1 Hardware Watchdog"
1726 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1728 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1729 will reboot the machine after a 100 seconds timer expired.
1732 tristate "Sibyte SoC hardware watchdog"
1735 Watchdog driver for the built in watchdog hardware in Sibyte
1736 SoC processors. There are apparently two watchdog timers
1737 on such processors; this driver supports only the first one,
1738 because currently Linux only supports exporting one watchdog
1741 To compile this driver as a loadable module, choose M here.
1742 The module will be called sb_wdog.
1745 tristate "TI AR7 Watchdog Timer"
1746 depends on AR7 || (MIPS && 32BIT && COMPILE_TEST)
1748 Hardware driver for the TI AR7 Watchdog Timer.
1751 tristate "Toshiba TXx9 Watchdog Timer"
1752 depends on CPU_TX49XX || (MIPS && COMPILE_TEST)
1753 select WATCHDOG_CORE
1755 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1758 tristate "Cavium OCTEON SOC family Watchdog Timer"
1759 depends on CAVIUM_OCTEON_SOC
1761 select WATCHDOG_CORE
1762 select EXPORT_UASM if OCTEON_WDT = m
1764 Hardware driver for OCTEON's on chip watchdog timer.
1765 Enables the watchdog for all cores running Linux. It
1766 installs a NMI handler and pokes the watchdog based on an
1767 interrupt. On first expiration of the watchdog, the
1768 interrupt handler pokes it. The second expiration causes an
1769 NMI that prints a message. The third expiration causes a
1772 When userspace has /dev/watchdog open, no poking is done
1773 from the first interrupt, it is then only poked when the
1777 tristate "Broadcom BCM2835 hardware watchdog"
1778 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1779 select WATCHDOG_CORE
1781 Watchdog driver for the built in watchdog hardware in Broadcom
1784 To compile this driver as a loadable module, choose M here.
1785 The module will be called bcm2835_wdt.
1788 tristate "BCM Kona Watchdog"
1789 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1790 select WATCHDOG_CORE
1792 Support for the watchdog timer on the following Broadcom BCM281xx
1793 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1796 Say 'Y' or 'M' here to enable the driver. The module will be called
1799 config BCM_KONA_WDT_DEBUG
1800 bool "DEBUGFS support for BCM Kona Watchdog"
1801 depends on BCM_KONA_WDT
1803 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1804 access to the driver's internal data structures as well as watchdog
1805 timer hardware registres.
1807 If in doubt, say 'N'.
1810 tristate "BCM63xx/BCM7038 Watchdog"
1811 select WATCHDOG_CORE
1812 depends on HAS_IOMEM
1813 depends on ARCH_BCMBCA || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST
1815 Watchdog driver for the built-in hardware in Broadcom 7038 and
1816 later SoCs used in set-top boxes. BCM7038 was made public
1817 during the 2004 CES, and since then, many Broadcom chips use this
1818 watchdog block, including some cable modem chips and DSL (63xx)
1822 tristate "Imagination Technologies PDC Watchdog Timer"
1823 depends on HAS_IOMEM
1824 depends on MIPS || COMPILE_TEST
1825 select WATCHDOG_CORE
1827 Driver for Imagination Technologies PowerDown Controller
1830 To compile this driver as a loadable module, choose M here.
1831 The module will be called imgpdc_wdt.
1834 tristate "Lantiq SoC watchdog"
1836 select WATCHDOG_CORE
1838 Hardware driver for the Lantiq SoC Watchdog Timer.
1840 config LOONGSON1_WDT
1841 tristate "Loongson1 SoC hardware watchdog"
1842 depends on MACH_LOONGSON32
1843 select WATCHDOG_CORE
1845 Hardware driver for the Loongson1 SoC Watchdog Timer.
1848 tristate "Ralink SoC watchdog"
1849 select WATCHDOG_CORE
1852 Hardware driver for the Ralink SoC Watchdog Timer.
1855 tristate "HPE GXP watchdog support"
1856 depends on ARCH_HPE_GXP
1857 select WATCHDOG_CORE
1859 Say Y here to include support for the watchdog timer
1862 To compile this driver as a module, choose M here.
1863 The module will be called gxp-wdt.
1866 tristate "Mediatek SoC watchdog"
1867 select WATCHDOG_CORE
1868 depends on SOC_MT7620 || SOC_MT7621
1870 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1873 tristate "Microchip PIC32 hardware watchdog"
1874 select WATCHDOG_CORE
1875 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1877 Watchdog driver for the built in watchdog hardware in a PIC32.
1879 Configuration bits must be set appropriately for the watchdog to be
1880 controlled by this driver.
1882 To compile this driver as a loadable module, choose M here.
1883 The module will be called pic32-wdt.
1886 tristate "Microchip PIC32 Deadman Timer"
1887 select WATCHDOG_CORE
1888 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1890 Watchdog driver for PIC32 instruction fetch counting timer. This
1891 specific timer is typically be used in mission critical and safety
1892 critical applications, where any single failure of the software
1893 functionality and sequencing must be detected.
1895 To compile this driver as a loadable module, choose M here.
1896 The module will be called pic32-dmt.
1898 # PARISC Architecture
1900 # POWERPC Architecture
1903 tristate "GE Watchdog Timer"
1906 Watchdog timer found in a number of GE single board computers.
1909 bool "MPC52xx Watchdog Timer"
1910 depends on PPC_MPC52xx || COMPILE_TEST
1912 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1915 tristate "MPC8xxx Platform Watchdog Timer"
1916 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1917 select WATCHDOG_CORE
1919 This driver is for a SoC level watchdog that exists on some
1920 Freescale PowerPC processors. So far this driver supports:
1925 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1928 tristate "PIKA FPGA Watchdog"
1929 depends on WARP || (PPC64 && COMPILE_TEST)
1932 This enables the watchdog in the PIKA FPGA. Currently used on
1936 tristate "PowerPC Book-E Watchdog Timer"
1937 depends on BOOKE || 4xx
1938 select WATCHDOG_CORE
1940 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1941 MPC85xx SOCs and the IBM PowerPC 440.
1943 Please see Documentation/watchdog/watchdog-api.rst for
1946 config BOOKE_WDT_DEFAULT_TIMEOUT
1947 int "PowerPC Book-E Watchdog Timer Default Timeout"
1948 depends on BOOKE_WDT
1949 default 38 if PPC_E500
1950 range 0 63 if PPC_E500
1951 default 3 if !PPC_E500
1952 range 0 3 if !PPC_E500
1954 Select the default watchdog timer period to be used by the PowerPC
1955 Book-E watchdog driver. A watchdog "event" occurs when the bit
1956 position represented by this number transitions from zero to one.
1958 For Freescale Book-E processors, this is a number between 0 and 63.
1959 For other Book-E processors, this is a number between 0 and 3.
1961 The value can be overridden by the wdt_period command-line parameter.
1964 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1965 select WATCHDOG_CORE
1966 depends on GPIOLIB || COMPILE_TEST
1968 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1970 The driver can also be built as a module. If so, the module will be
1973 If unsure select N here.
1975 # PPC64 Architecture
1978 tristate "POWER Architecture Platform Watchdog Timer"
1979 depends on PPC_PSERIES
1980 select WATCHDOG_CORE
1982 Driver for virtual watchdog timers provided by PAPR
1983 hypervisors (e.g. PowerVM, KVM).
1985 config WATCHDOG_RTAS
1986 tristate "RTAS watchdog"
1989 This driver adds watchdog support for the RTAS watchdog.
1991 To compile this driver as a module, choose M here. The module
1992 will be called wdrtas.
1996 config DIAG288_WATCHDOG
1997 tristate "System z diag288 Watchdog"
1999 select WATCHDOG_CORE
2001 IBM s/390 and zSeries machines running under z/VM 5.1 or later
2002 provide a virtual watchdog timer to their guest that cause a
2003 user define Control Program command to be executed after a
2005 LPAR provides a very similar interface. This driver handles
2008 To compile this driver as a module, choose M here. The module
2009 will be called diag288_wdt.
2011 # SUPERH (sh + sh64) Architecture
2014 tristate "SuperH Watchdog"
2015 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
2016 select WATCHDOG_CORE
2018 This driver adds watchdog support for the integrated watchdog in the
2019 SuperH processors. If you have one of these processors and wish
2020 to have watchdog support enabled, say Y, otherwise say N.
2022 As a side note, saying Y here will automatically boost HZ to 1000
2023 so that the timer has a chance to clear the overflow counter. On
2024 slower systems (such as the SH-2 and SH-3) this will likely yield
2025 some performance issues. As such, the WDT should be avoided here
2026 unless it is absolutely necessary.
2028 To compile this driver as a module, choose M here: the
2029 module will be called shwdt.
2031 # SPARC Architecture
2033 # SPARC64 Architecture
2035 config WATCHDOG_CP1XXX
2036 tristate "CP1XXX Hardware Watchdog support"
2037 depends on SPARC64 && PCI
2039 This is the driver for the hardware watchdog timers present on
2040 Sun Microsystems CompactPCI models CP1400 and CP1500.
2042 To compile this driver as a module, choose M here: the
2043 module will be called cpwatchdog.
2045 If you do not have a CompactPCI model CP1400 or CP1500, or
2046 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2047 you should say N to this option.
2050 tristate "RIO Hardware Watchdog support"
2051 depends on SPARC64 && PCI
2053 Say Y here to support the hardware watchdog capability on Sun RIO
2054 machines. The watchdog timeout period is normally one minute but
2055 can be changed with a boot-time parameter.
2057 config WATCHDOG_SUN4V
2058 tristate "Sun4v Watchdog support"
2059 select WATCHDOG_CORE
2062 Say Y here to support the hypervisor watchdog capability embedded
2063 in the SPARC sun4v architecture.
2065 To compile this driver as a module, choose M here. The module will
2066 be called sun4v_wdt.
2068 # XTENSA Architecture
2073 tristate "Xen Watchdog support"
2075 select WATCHDOG_CORE
2077 Say Y here to support the hypervisor watchdog capability provided
2078 by Xen 4.0 and newer. The watchdog timeout period is normally one
2079 minute but can be changed with a boot-time parameter.
2082 tristate "UML watchdog"
2083 depends on UML || COMPILE_TEST
2086 # ISA-based Watchdog Cards
2089 comment "ISA-based Watchdog Cards"
2093 tristate "Berkshire Products ISA-PC Watchdog"
2096 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2097 This card simply watches your kernel to make sure it doesn't freeze,
2098 and if it does, it reboots your computer after a certain amount of
2099 time. This driver is like the WDT501 driver but for different
2100 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>.
2101 The PC watchdog cards can be ordered from <http://www.berkprod.com/>.
2103 To compile this driver as a module, choose M here: the
2104 module will be called pcwd.
2106 Most people will say N.
2109 tristate "Mixcom Watchdog"
2112 This is a driver for the Mixcom hardware watchdog cards. This
2113 watchdog simply watches your kernel to make sure it doesn't freeze,
2114 and if it does, it reboots your computer after a certain amount of
2117 To compile this driver as a module, choose M here: the
2118 module will be called mixcomwd.
2120 Most people will say N.
2123 tristate "WDT Watchdog timer"
2126 If you have a WDT500P or WDT501P watchdog board, say Y here,
2127 otherwise N. It is not possible to probe for this board, which means
2128 that you have to inform the kernel about the IO port and IRQ that
2129 is needed (you can do this via the io and irq parameters)
2131 To compile this driver as a module, choose M here: the
2132 module will be called wdt.
2135 # PCI-based Watchdog Cards
2138 comment "PCI-based Watchdog Cards"
2141 config PCIPCWATCHDOG
2142 tristate "Berkshire Products PCI-PC Watchdog"
2145 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2146 This card simply watches your kernel to make sure it doesn't freeze,
2147 and if it does, it reboots your computer after a certain amount of
2148 time. The card can also monitor the internal temperature of the PC.
2149 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2151 To compile this driver as a module, choose M here: the
2152 module will be called pcwd_pci.
2154 Most people will say N.
2157 tristate "PCI-WDT500/501 Watchdog timer"
2160 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2162 If you have a PCI-WDT501 watchdog board then you can enable the
2163 temperature sensor by setting the type parameter to 501.
2165 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2166 can do this via the tachometer parameter. Only do this if you have a
2167 fan tachometer actually set up.
2169 To compile this driver as a module, choose M here: the
2170 module will be called wdt_pci.
2173 # USB-based Watchdog Cards
2176 comment "USB-based Watchdog Cards"
2179 config USBPCWATCHDOG
2180 tristate "Berkshire Products USB-PC Watchdog"
2183 This is the driver for the Berkshire Products USB-PC Watchdog card.
2184 This card simply watches your kernel to make sure it doesn't freeze,
2185 and if it does, it reboots your computer after a certain amount of
2186 time. The card can also monitor the internal temperature of the PC.
2187 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2189 To compile this driver as a module, choose M here: the
2190 module will be called pcwd_usb.
2192 Most people will say N.
2194 config KEEMBAY_WATCHDOG
2195 tristate "Intel Keem Bay SoC non-secure watchdog"
2196 depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
2197 select WATCHDOG_CORE
2199 This option enable support for an In-secure watchdog timer driver for
2200 Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every
2201 count unit. An interrupt will be triggered, when the count crosses
2202 the threshold configured in the register.
2204 To compile this driver as a module, choose M here: the
2205 module will be called keembay_wdt.