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 BD70528_WATCHDOG
172 tristate "ROHM BD70528 PMIC Watchdog"
173 depends on MFD_ROHM_BD70528
176 Support for the watchdog in the ROHM BD70528 PMIC. Watchdog trigger
179 Say Y here to include support for the ROHM BD70528 watchdog.
180 Alternatively say M to compile the driver as a module,
181 which will be called bd70528_wdt.
183 config BD957XMUF_WATCHDOG
184 tristate "ROHM BD9576MUF and BD9573MUF PMIC Watchdog"
185 depends on MFD_ROHM_BD957XMUF
188 Support for the watchdog in the ROHM BD9576 and BD9573 PMICs.
189 These PMIC ICs contain watchdog block which can be configured
190 to toggle reset line if SoC fails to ping watchdog via GPIO.
192 Say Y here to include support for the ROHM BD9576 or BD9573
193 watchdog. Alternatively say M to compile the driver as a module,
194 which will be called bd9576_wdt.
196 config DA9052_WATCHDOG
197 tristate "Dialog DA9052 Watchdog"
198 depends on PMIC_DA9052 || COMPILE_TEST
201 Support for the watchdog in the DA9052 PMIC. Watchdog trigger
204 Say Y here to include support for the DA9052 watchdog.
205 Alternatively say M to compile the driver as a module,
206 which will be called da9052_wdt.
208 config DA9055_WATCHDOG
209 tristate "Dialog Semiconductor DA9055 Watchdog"
210 depends on MFD_DA9055 || COMPILE_TEST
213 If you say yes here you get support for watchdog on the Dialog
214 Semiconductor DA9055 PMIC.
216 This driver can also be built as a module. If so, the module
217 will be called da9055_wdt.
219 config DA9063_WATCHDOG
220 tristate "Dialog DA9063 Watchdog"
221 depends on MFD_DA9063 || COMPILE_TEST
224 Support for the watchdog in the DA9063 PMIC.
226 This driver can be built as a module. The module name is da9063_wdt.
228 config DA9062_WATCHDOG
229 tristate "Dialog DA9062/61 Watchdog"
230 depends on MFD_DA9062 || COMPILE_TEST
234 Support for the watchdog in the DA9062 and DA9061 PMICs.
236 This driver can be built as a module. The module name is da9062_wdt.
239 tristate "Watchdog device controlled through GPIO-line"
243 If you say yes here you get support for watchdog device
244 controlled through GPIO-line.
246 config GPIO_WATCHDOG_ARCH_INITCALL
247 bool "Register the watchdog as early as possible"
248 depends on GPIO_WATCHDOG=y
250 In some situations, the default initcall level (module_init)
251 in not early enough in the boot process to avoid the watchdog
253 If you say yes here, the initcall level would be raised to
257 config MENF21BMC_WATCHDOG
258 tristate "MEN 14F021P00 BMC Watchdog"
259 depends on MFD_MENF21BMC || COMPILE_TEST
263 Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
265 This driver can also be built as a module. If so the module
266 will be called menf21bmc_wdt.
268 config MENZ069_WATCHDOG
269 tristate "MEN 16Z069 Watchdog"
273 Say Y here to include support for the MEN 16Z069 Watchdog.
275 This driver can also be built as a module. If so the module
276 will be called menz069_wdt.
279 tristate "ACPI Watchdog Action Table (WDAT)"
284 This driver adds support for systems with ACPI Watchdog Action
285 Table (WDAT) table. Servers typically have this but it can be
286 found on some desktop machines as well. This driver will take
287 over the native iTCO watchdog driver found on many Intel CPUs.
289 To compile this driver as module, choose M here: the module will
292 config WM831X_WATCHDOG
293 tristate "WM831x watchdog"
294 depends on MFD_WM831X
297 Support for the watchdog in the WM831x AudioPlus PMICs. When
298 the watchdog triggers the system will be reset.
300 config WM8350_WATCHDOG
301 tristate "WM8350 watchdog"
302 depends on MFD_WM8350
305 Support for the watchdog in the WM8350 AudioPlus PMIC. When
306 the watchdog triggers the system will be reset.
308 config XILINX_WATCHDOG
309 tristate "Xilinx Watchdog timer"
313 Watchdog driver for the xps_timebase_wdt IP core.
315 To compile this driver as a module, choose M here: the
316 module will be called of_xilinx_wdt.
318 config ZIIRAVE_WATCHDOG
319 tristate "Zodiac RAVE Watchdog Timer"
323 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
326 To compile this driver as a module, choose M here: the
327 module will be called ziirave_wdt.
329 config RAVE_SP_WATCHDOG
330 tristate "RAVE SP Watchdog timer"
331 depends on RAVE_SP_CORE
332 depends on NVMEM || !NVMEM
335 Support for the watchdog on RAVE SP device.
338 tristate "Mellanox Watchdog"
339 depends on MELLANOX_PLATFORM
343 This is the driver for the hardware watchdog on Mellanox systems.
344 If you are going to use it, say Y here, otherwise N.
345 This driver can be used together with the watchdog daemon.
346 It can also watch your kernel to make sure it doesn't freeze,
347 and if it does, it reboots your system after a certain amount of
350 To compile this driver as a module, choose M here: the
351 module will be called mlx-wdt.
353 config SL28CPLD_WATCHDOG
354 tristate "Kontron sl28cpld Watchdog"
355 depends on MFD_SL28CPLD || COMPILE_TEST
358 Say Y here to include support for the watchdog timer
359 on the Kontron sl28 CPLD.
361 To compile this driver as a module, choose M here: the
362 module will be called sl28cpld_wdt.
368 config ARM_SP805_WATCHDOG
369 tristate "ARM SP805 Watchdog"
370 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
373 ARM Primecell SP805 Watchdog timer. This will reboot your system when
374 the timeout is reached.
376 config ARM_SBSA_WATCHDOG
377 tristate "ARM SBSA Generic Watchdog"
379 depends on ARM_ARCH_TIMER
382 ARM SBSA Generic Watchdog has two stage timeouts:
383 the first signal (WS0) is for alerting the system by interrupt,
384 the second one (WS1) is a real hardware reset.
385 More details: ARM DEN0029B - Server Base System Architecture (SBSA)
387 This driver can operate ARM SBSA Generic Watchdog as a single stage
388 or a two stages watchdog, it depends on the module parameter "action".
390 Note: the maximum timeout in the two stages mode is half of that in
391 the single stage mode.
393 To compile this driver as module, choose M here: The module
394 will be called sbsa_gwdt.
396 config ARMADA_37XX_WATCHDOG
397 tristate "Armada 37xx watchdog"
398 depends on ARCH_MVEBU || COMPILE_TEST
403 Say Y here to include support for the watchdog timer found on
404 Marvell Armada 37xx SoCs.
405 To compile this driver as a module, choose M here: the
406 module will be called armada_37xx_wdt.
408 config ASM9260_WATCHDOG
409 tristate "Alphascale ASM9260 watchdog"
410 depends on MACH_ASM9260 || COMPILE_TEST
413 select RESET_CONTROLLER
415 Watchdog timer embedded into Alphascale asm9260 chips. This will
416 reboot your system when the timeout is reached.
418 config AT91RM9200_WATCHDOG
419 tristate "AT91RM9200 watchdog"
420 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
422 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
423 system when the timeout is reached.
425 config AT91SAM9X_WATCHDOG
426 tristate "AT91SAM9X / AT91CAP9 watchdog"
427 depends on ARCH_AT91 || COMPILE_TEST
430 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
431 reboot your system when the timeout is reached.
433 config SAMA5D4_WATCHDOG
434 tristate "Atmel SAMA5D4 Watchdog Timer"
435 depends on ARCH_AT91 || COMPILE_TEST
438 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
439 Its Watchdog Timer Mode Register can be written more than once.
440 This will reboot your system when the timeout is reached.
442 config CADENCE_WATCHDOG
443 tristate "Cadence Watchdog Timer"
447 Say Y here if you want to include support for the watchdog
448 timer in the Xilinx Zynq.
450 config 21285_WATCHDOG
451 tristate "DC21285 watchdog"
452 depends on FOOTBRIDGE
454 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
455 here if you wish to use this. Alternatively say M to compile the
456 driver as a module, which will be called wdt285.
458 This driver does not work on all machines. In particular, early CATS
459 boards have hardware problems that will cause the machine to simply
460 lock up if the watchdog fires.
462 "If in doubt, leave it out" - say N.
465 tristate "NetWinder WB83C977 watchdog"
466 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
468 Say Y here to include support for the WB977 watchdog included in
469 NetWinder machines. Alternatively say M to compile the driver as
470 a module, which will be called wdt977.
472 Not sure? It's safe to say N.
474 config FTWDT010_WATCHDOG
475 tristate "Faraday Technology FTWDT010 watchdog"
476 depends on ARM || COMPILE_TEST
480 Say Y here if to include support for the Faraday Technology
481 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
484 To compile this driver as a module, choose M here: the
485 module will be called ftwdt010_wdt.
487 config IXP4XX_WATCHDOG
488 tristate "IXP4xx Watchdog"
489 depends on ARCH_IXP4XX
491 Say Y here if to include support for the watchdog timer
492 in the Intel IXP4xx network processors. This driver can
493 be built as a module by choosing M. The module will
494 be called ixp4xx_wdt.
496 Note: The internal IXP4xx watchdog does a soft CPU reset
497 which doesn't reset any peripherals. There are circumstances
498 where the watchdog will fail to reset the board correctly
499 (e.g., if the boot ROM is in an unreadable state).
501 Say N if you are unsure.
503 config S3C2410_WATCHDOG
504 tristate "S3C2410 Watchdog"
505 depends on ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || \
508 select MFD_SYSCON if ARCH_EXYNOS
510 Watchdog timer block in the Samsung SoCs. This will reboot
511 the system when the timer expires with the watchdog enabled.
513 The driver is limited by the speed of the system's PCLK
514 signal, so with reasonably fast systems (PCLK around 50-66MHz)
515 then watchdog intervals of over approximately 20seconds are
518 The driver can be built as a module by choosing M, and will
519 be called s3c2410_wdt
521 config SA1100_WATCHDOG
522 tristate "SA1100/PXA2xx watchdog"
523 depends on ARCH_SA1100 || ARCH_PXA
525 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
526 reboot your system when timeout is reached.
528 NOTE: once enabled, this timer cannot be disabled.
530 To compile this driver as a module, choose M here: the
531 module will be called sa1100_wdt.
534 tristate "Synopsys DesignWare watchdog"
538 Say Y here if to include support for the Synopsys DesignWare
539 watchdog timer found in many chips.
540 To compile this driver as a module, choose M here: the
541 module will be called dw_wdt.
543 config EP93XX_WATCHDOG
544 tristate "EP93xx Watchdog"
545 depends on ARCH_EP93XX || COMPILE_TEST
548 Say Y here if to include support for the watchdog timer
549 embedded in the Cirrus Logic EP93xx family of devices.
551 To compile this driver as a module, choose M here: the
552 module will be called ep93xx_wdt.
555 tristate "OMAP Watchdog"
556 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
559 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog.
560 Say 'Y' here to enable the
561 OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
563 config PNX4008_WATCHDOG
564 tristate "LPC32XX Watchdog"
565 depends on ARCH_LPC32XX || COMPILE_TEST
568 Say Y here if to include support for the watchdog timer
569 in the LPC32XX processor.
570 This driver can be built as a module by choosing M. The module
571 will be called pnx4008_wdt.
573 Say N if you are unsure.
576 tristate "IOP Watchdog"
577 depends on ARCH_IOP13XX
578 select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X)
580 Say Y here if to include support for the watchdog timer
581 in the Intel IOP3XX & IOP13XX I/O Processors. This driver can
582 be built as a module by choosing M. The module will
585 Note: The IOP13XX watchdog does an Internal Bus Reset which will
586 affect both cores and the peripherals of the IOP. The ATU-X
587 and/or ATUe configuration registers will remain intact, but if
588 operating as an Root Complex and/or Central Resource, the PCI-X
589 and/or PCIe busses will also be reset. THIS IS A VERY BIG HAMMER.
591 config DAVINCI_WATCHDOG
592 tristate "DaVinci watchdog"
593 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
596 Say Y here if to include support for the watchdog timer
597 in the DaVinci DM644x/DM646x or Keystone processors.
598 To compile this driver as a module, choose M here: the
599 module will be called davinci_wdt.
601 NOTE: once enabled, this timer cannot be disabled.
602 Say N if you are unsure.
604 config K3_RTI_WATCHDOG
605 tristate "Texas Instruments K3 RTI watchdog"
606 depends on ARCH_K3 || COMPILE_TEST
609 Say Y here if you want to include support for the K3 watchdog
610 timer (RTI module) available in the K3 generation of processors.
612 config ORION_WATCHDOG
613 tristate "Orion watchdog"
614 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST
618 Say Y here if to include support for the watchdog timer
619 in the Marvell Orion5x and Kirkwood ARM SoCs.
620 To compile this driver as a module, choose M here: the
621 module will be called orion_wdt.
623 config RN5T618_WATCHDOG
624 tristate "Ricoh RN5T618 watchdog"
625 depends on MFD_RN5T618 || COMPILE_TEST
628 If you say yes here you get support for watchdog on the Ricoh
631 This driver can also be built as a module. If so, the module
632 will be called rn5t618_wdt.
634 config SUNXI_WATCHDOG
635 tristate "Allwinner SoCs watchdog support"
636 depends on ARCH_SUNXI || COMPILE_TEST
639 Say Y here to include support for the watchdog timer
641 To compile this driver as a module, choose M here: the
642 module will be called sunxi_wdt.
644 config NPCM7XX_WATCHDOG
645 tristate "Nuvoton NPCM750 watchdog"
646 depends on ARCH_NPCM || COMPILE_TEST
647 default y if ARCH_NPCM7XX
650 Say Y here to include Watchdog timer support for the
651 watchdog embedded into the NPCM7xx.
652 This watchdog is used to reset the system and thus cannot be
653 compiled as a module.
655 config TWL4030_WATCHDOG
656 tristate "TWL4030 Watchdog"
657 depends on TWL4030_CORE
660 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
661 watchdog timer support for TWL4030 chips.
663 config STMP3XXX_RTC_WATCHDOG
664 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
665 depends on RTC_DRV_STMP || COMPILE_TEST
668 Say Y here to include support for the watchdog timer inside
669 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
670 To compile this driver as a module, choose M here: the
671 module will be called stmp3xxx_rtc_wdt.
673 config TS4800_WATCHDOG
674 tristate "TS-4800 Watchdog"
675 depends on HAS_IOMEM && OF
676 depends on SOC_IMX51 || COMPILE_TEST
680 Technologic Systems TS-4800 has watchdog timer implemented in
681 an external FPGA. Say Y here if you want to support for the
682 watchdog timer on TS-4800 board.
684 config TS72XX_WATCHDOG
685 tristate "TS-72XX SBC Watchdog"
686 depends on MACH_TS72XX || COMPILE_TEST
689 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
690 watchdog timer implemented in a external CPLD chip. Say Y here
691 if you want to support for the watchdog timer on TS-72XX boards.
693 To compile this driver as a module, choose M here: the
694 module will be called ts72xx_wdt.
696 config MAX63XX_WATCHDOG
697 tristate "Max63xx watchdog"
701 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
703 config MAX77620_WATCHDOG
704 tristate "Maxim Max77620 Watchdog Timer"
705 depends on MFD_MAX77620 || COMPILE_TEST
708 This is the driver for the Max77620 watchdog timer.
709 Say 'Y' here to enable the watchdog timer support for
710 MAX77620 chips. To compile this driver as a module,
711 choose M here: the module will be called max77620_wdt.
714 tristate "IMX2+ Watchdog"
715 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
719 This is the driver for the hardware watchdog
720 on the Freescale IMX2 and later processors.
721 If you have one of these processors and wish to have
722 watchdog support enabled, say Y, otherwise say N.
724 To compile this driver as a module, choose M here: the
725 module will be called imx2_wdt.
728 tristate "IMX SC Watchdog"
729 depends on HAVE_ARM_SMCCC
733 This is the driver for the system controller watchdog
734 on the NXP i.MX SoCs with system controller inside, the
735 watchdog driver will call ARM SMC API and trap into
736 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
737 will request system controller to execute the operations.
738 If you have one of these processors and wish to have
739 watchdog support enabled, say Y, otherwise say N.
741 To compile this driver as a module, choose M here: the
742 module will be called imx_sc_wdt.
745 tristate "IMX7ULP Watchdog"
746 depends on ARCH_MXC || COMPILE_TEST
749 This is the driver for the hardware watchdog on the Freescale
750 IMX7ULP and later processors. If you have one of these
751 processors and wish to have watchdog support enabled,
752 say Y, otherwise say N.
754 To compile this driver as a module, choose M here: the
755 module will be called imx7ulp_wdt.
757 config UX500_WATCHDOG
758 tristate "ST-Ericsson Ux500 watchdog"
759 depends on MFD_DB8500_PRCMU
763 Say Y here to include Watchdog timer support for the watchdog
764 existing in the prcmu of ST-Ericsson Ux500 series platforms.
766 To compile this driver as a module, choose M here: the
767 module will be called ux500_wdt.
770 tristate "Retu watchdog"
774 Retu watchdog driver for Nokia Internet Tablets (770, N800,
775 N810). At least on N800 the watchdog cannot be disabled, so
776 this driver is essential and you should enable it.
778 To compile this driver as a module, choose M here: the
779 module will be called retu_wdt.
782 tristate "MOXART watchdog"
783 depends on ARCH_MOXART || COMPILE_TEST
785 Say Y here to include Watchdog timer support for the watchdog
786 existing on the MOXA ART SoC series platforms.
788 To compile this driver as a module, choose M here: the
789 module will be called moxart_wdt.
791 config ST_LPC_WATCHDOG
792 tristate "STMicroelectronics LPC Watchdog"
793 depends on ARCH_STI || COMPILE_TEST
797 Say Y here to include STMicroelectronics Low Power Controller
798 (LPC) based Watchdog timer support.
800 To compile this driver as a module, choose M here: the
801 module will be called st_lpc_wdt.
803 config TEGRA_WATCHDOG
804 tristate "Tegra watchdog"
805 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
808 Say Y here to include support for the watchdog timer
809 embedded in NVIDIA Tegra SoCs.
811 To compile this driver as a module, choose M here: the
812 module will be called tegra_wdt.
815 tristate "QCOM watchdog"
817 depends on ARCH_QCOM || COMPILE_TEST
820 Say Y here to include Watchdog timer support for the watchdog found
821 on QCOM chipsets. Currently supported targets are the MSM8960,
822 APQ8064, and IPQ8064.
824 To compile this driver as a module, choose M here: the
825 module will be called qcom_wdt.
827 config MESON_GXBB_WATCHDOG
828 tristate "Amlogic Meson GXBB SoCs watchdog support"
829 depends on ARCH_MESON || COMPILE_TEST
832 Say Y here to include support for the watchdog timer
833 in Amlogic Meson GXBB SoCs.
834 To compile this driver as a module, choose M here: the
835 module will be called meson_gxbb_wdt.
837 config MESON_WATCHDOG
838 tristate "Amlogic Meson SoCs watchdog support"
839 depends on ARCH_MESON || COMPILE_TEST
842 Say Y here to include support for the watchdog timer
843 in Amlogic Meson SoCs.
844 To compile this driver as a module, choose M here: the
845 module will be called meson_wdt.
847 config MEDIATEK_WATCHDOG
848 tristate "Mediatek SoCs watchdog support"
849 depends on ARCH_MEDIATEK || COMPILE_TEST
851 select RESET_CONTROLLER
853 Say Y here to include support for the watchdog timer
855 To compile this driver as a module, choose M here: the
856 module will be called mtk_wdt.
858 config DIGICOLOR_WATCHDOG
859 tristate "Conexant Digicolor SoCs watchdog support"
860 depends on ARCH_DIGICOLOR || COMPILE_TEST
863 Say Y here to include support for the watchdog timer
864 in Conexant Digicolor SoCs.
865 To compile this driver as a module, choose M here: the
866 module will be called digicolor_wdt.
868 config ARM_SMC_WATCHDOG
869 tristate "ARM Secure Monitor Call based watchdog support"
870 depends on ARM || ARM64
872 depends on HAVE_ARM_SMCCC
875 Say Y here to include support for a watchdog timer
876 implemented by the EL3 Secure Monitor on ARM platforms.
877 Requires firmware support.
878 To compile this driver as a module, choose M here: the
879 module will be called arm_smc_wdt.
881 config LPC18XX_WATCHDOG
882 tristate "LPC18xx/43xx Watchdog"
883 depends on ARCH_LPC18XX || COMPILE_TEST
887 Say Y here if to include support for the watchdog timer
888 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
890 To compile this driver as a module, choose M here: the
891 module will be called lpc18xx_wdt.
894 tristate "Renesas WDT Watchdog"
895 depends on ARCH_RENESAS || COMPILE_TEST
898 This driver adds watchdog support for the integrated watchdogs in the
899 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
901 config RENESAS_RZAWDT
902 tristate "Renesas RZ/A WDT Watchdog"
903 depends on ARCH_RENESAS || COMPILE_TEST
906 This driver adds watchdog support for the integrated watchdogs in the
907 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
909 config ASPEED_WATCHDOG
910 tristate "Aspeed BMC watchdog support"
911 depends on ARCH_ASPEED || COMPILE_TEST
914 Say Y here to include support for the watchdog timer
917 This driver is required to reboot the SoC.
919 To compile this driver as a module, choose M here: the
920 module will be called aspeed_wdt.
922 config STM32_WATCHDOG
923 tristate "STM32 Independent WatchDoG (IWDG) support"
924 depends on ARCH_STM32
928 Say Y here to include support for the watchdog timer
931 To compile this driver as a module, choose M here: the
932 module will be called stm32_iwdg.
934 config STPMIC1_WATCHDOG
935 tristate "STPMIC1 PMIC watchdog support"
936 depends on MFD_STPMIC1
939 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
940 If the watchdog timer expires, stpmic1 will shut down all its power
943 To compile this driver as a module, choose M here: the
944 module will be called spmic1_wdt.
946 config UNIPHIER_WATCHDOG
947 tristate "UniPhier watchdog support"
948 depends on ARCH_UNIPHIER || COMPILE_TEST
949 depends on OF && MFD_SYSCON
952 Say Y here to include support watchdog timer embedded
953 into the UniPhier system.
955 To compile this driver as a module, choose M here: the
956 module will be called uniphier_wdt.
958 config RTD119X_WATCHDOG
959 bool "Realtek RTD119x/RTD129x watchdog support"
960 depends on ARCH_REALTEK || COMPILE_TEST
965 Say Y here to include support for the watchdog timer in
966 Realtek RTD1295 SoCs.
969 tristate "Spreadtrum watchdog support"
970 depends on ARCH_SPRD || COMPILE_TEST
973 Say Y here to include watchdog timer supported
974 by Spreadtrum system.
976 config PM8916_WATCHDOG
977 tristate "QCOM PM8916 pmic watchdog"
978 depends on OF && MFD_SPMI_PMIC
981 Say Y here to include support watchdog timer embedded into the
984 config VISCONTI_WATCHDOG
985 tristate "Toshiba Visconti series watchdog support"
986 depends on ARCH_VISCONTI || COMPILE_TEST
989 Say Y here to include support for the watchdog timer in Toshiba
992 config MSC313E_WATCHDOG
993 tristate "MStar MSC313e watchdog"
994 depends on ARCH_MSTARV7 || COMPILE_TEST
997 Say Y here to include support for the Watchdog timer embedded
998 into MStar MSC313e chips. This will reboot your system when the
1001 To compile this driver as a module, choose M here: the
1002 module will be called msc313e_wdt.
1004 # X86 (i386 + ia64 + x86_64) Architecture
1007 tristate "Acquire SBC Watchdog Timer"
1010 This is the driver for the hardware watchdog on Single Board
1011 Computers produced by Acquire Inc (and others). This watchdog
1012 simply watches your kernel to make sure it doesn't freeze, and if
1013 it does, it reboots your computer after a certain amount of time.
1015 To compile this driver as a module, choose M here: the
1016 module will be called acquirewdt.
1018 Most people will say N.
1020 config ADVANTECH_WDT
1021 tristate "Advantech SBC Watchdog Timer"
1024 If you are configuring a Linux kernel for the Advantech single-board
1025 computer, say `Y' here to support its built-in watchdog timer
1026 feature. More information can be found at
1027 <https://www.advantech.com.tw/products/>
1030 tristate "ALi M1535 PMU Watchdog Timer"
1031 depends on X86 && PCI
1033 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1035 To compile this driver as a module, choose M here: the
1036 module will be called alim1535_wdt.
1038 Most people will say N.
1041 tristate "ALi M7101 PMU Computer Watchdog"
1044 This is the driver for the hardware watchdog on the ALi M7101 PMU
1045 as used in the x86 Cobalt servers and also found in some
1046 SPARC Netra servers too.
1048 To compile this driver as a module, choose M here: the
1049 module will be called alim7101_wdt.
1051 Most people will say N.
1054 tristate "WinSystems EBC-C384 Watchdog Timer"
1057 select WATCHDOG_CORE
1059 Enables watchdog timer support for the watchdog timer on the
1060 WinSystems EBC-C384 motherboard. The timeout may be configured via
1061 the timeout module parameter.
1064 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1067 This is the driver for the hardware watchdog on the Fintek F71808E,
1068 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1069 F81866 Super I/O controllers.
1071 You can compile this driver directly into the kernel, or use
1072 it as a module. The module will be called f71808e_wdt.
1075 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1076 depends on X86 && PCI
1077 select WATCHDOG_CORE
1079 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1080 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1081 the machine after its expiration. The expiration time can be
1082 configured with the "heartbeat" parameter.
1084 To compile this driver as a module, choose M here: the
1085 module will be called sp5100_tco.
1088 tristate "AMD Geode CS5535/CS5536 Watchdog"
1089 depends on CS5535_MFGPT
1091 This driver enables a watchdog capability built into the
1092 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1093 processors. This watchdog watches your kernel to make sure
1094 it doesn't freeze, and if it does, it reboots your computer after
1095 a certain amount of time.
1097 You can compile this driver directly into the kernel, or use
1098 it as a module. The module will be called geodewdt.
1101 tristate "AMD Elan SC520 processor Watchdog"
1102 depends on MELAN || COMPILE_TEST
1104 This is the driver for the hardware watchdog built in to the
1105 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1106 This watchdog simply watches your kernel to make sure it doesn't
1107 freeze, and if it does, it reboots your computer after a certain
1110 You can compile this driver directly into the kernel, or use
1111 it as a module. The module will be called sc520_wdt.
1113 config SBC_FITPC2_WATCHDOG
1114 tristate "Compulab SBC-FITPC2 watchdog"
1117 This is the driver for the built-in watchdog timer on the fit-PC2,
1118 fit-PC2i, CM-iAM single-board computers made by Compulab.
1120 It's possible to enable the watchdog timer either from BIOS (F2) or
1122 When the "Watchdog Timer Value" is enabled one can set 31-255 seconds
1125 Entering BIOS setup temporarily disables watchdog operation regardless
1126 of current state, so system will not be restarted while user is in
1129 Once the watchdog is enabled the system will be restarted every
1130 "Watchdog Timer Value" period, so to prevent it user can restart or
1131 disable the watchdog.
1133 To compile this driver as a module, choose M here: the
1134 module will be called sbc_fitpc2_wdt.
1136 Most people will say N.
1139 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1142 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1143 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1144 information are at <http://www.eurotech.it/>.
1147 tristate "IB700 SBC Watchdog Timer"
1150 This is the driver for the hardware watchdog on the IB700 Single
1151 Board Computer produced by TMC Technology (www.tmc-uk.com). This
1152 watchdog simply watches your kernel to make sure it doesn't freeze,
1153 and if it does, it reboots your computer after a certain amount of time.
1155 This driver is like the WDT501 driver but for slightly different
1158 To compile this driver as a module, choose M here: the
1159 module will be called ib700wdt.
1161 Most people will say N.
1164 tristate "IBM Automatic Server Restart"
1167 This is the driver for the IBM Automatic Server Restart watchdog
1168 timer built-in into some eServer xSeries machines.
1170 To compile this driver as a module, choose M here: the
1171 module will be called ibmasr.
1174 tristate "ICP Single Board Computer Watchdog Timer"
1177 This is a driver for the hardware watchdog on the ICP Single
1178 Board Computer. This driver is working on (at least) the following
1179 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1181 To compile this driver as a module, choose M here: the
1182 module will be called wafer5823wdt.
1185 tristate "Intel 6300ESB Timer/Watchdog"
1187 select WATCHDOG_CORE
1189 Hardware driver for the watchdog timer built into the Intel
1190 6300ESB controller hub.
1192 To compile this driver as a module, choose M here: the
1193 module will be called i6300esb.
1196 tristate "Intel Atom E6xx Watchdog"
1197 depends on X86 && PCI
1198 select WATCHDOG_CORE
1202 Hardware driver for the watchdog timer built into the Intel
1203 Atom E6XX (TunnelCreek) processor.
1205 To compile this driver as a module, choose M here: the
1206 module will be called ie6xx_wdt.
1208 config INTEL_MID_WATCHDOG
1209 tristate "Intel MID Watchdog Timer"
1210 depends on X86_INTEL_MID
1211 select WATCHDOG_CORE
1213 Watchdog timer driver built into the Intel SCU for Intel MID
1216 This driver currently supports only the watchdog evolution
1217 implementation in SCU, available for Merrifield generation.
1219 To compile this driver as a module, choose M here.
1222 tristate "Intel TCO Timer/Watchdog"
1223 depends on (X86 || IA64) && PCI
1224 select WATCHDOG_CORE
1225 depends on I2C || I2C=n
1226 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1227 select LPC_ICH if !EXPERT
1228 select I2C_I801 if !EXPERT && I2C
1230 Hardware driver for the intel TCO timer based watchdog devices.
1231 These drivers are included in the Intel 82801 I/O Controller
1232 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1235 The TCO (Total Cost of Ownership) timer is a watchdog timer
1236 that will reboot the machine after its second expiration. The
1237 expiration time can be configured with the "heartbeat" parameter.
1239 On some motherboards the driver may fail to reset the chipset's
1240 NO_REBOOT flag which prevents the watchdog from rebooting the
1241 machine. If this is the case you will get a kernel message like
1242 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1244 To compile this driver as a module, choose M here: the
1245 module will be called iTCO_wdt.
1247 config ITCO_VENDOR_SUPPORT
1248 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1251 Add vendor specific support to the intel TCO timer based watchdog
1252 devices. At this moment we only have additional support for some
1253 SuperMicro Inc. motherboards.
1256 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1259 This is the driver for the built-in watchdog timer on the IT8712F
1260 Super I/0 chipset used on many motherboards.
1262 If the driver does not work, then make sure that the game port in
1263 the BIOS is enabled.
1265 To compile this driver as a module, choose M here: the
1266 module will be called it8712f_wdt.
1269 tristate "IT87 Watchdog Timer"
1271 select WATCHDOG_CORE
1273 This is the driver for the hardware watchdog on the ITE IT8607,
1274 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1275 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1276 IT8783 Super I/O chips.
1278 This watchdog simply watches your kernel to make sure it doesn't
1279 freeze, and if it does, it reboots your computer after a certain
1282 To compile this driver as a module, choose M here: the module will
1286 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1287 select WATCHDOG_CORE
1288 depends on X86 && PCI
1290 A software monitoring watchdog and NMI handling driver. This driver
1291 will detect lockups and provide a stack trace. This is a driver that
1292 will only load on an HP ProLiant system with a minimum of iLO2 support.
1293 To compile this driver as a module, choose M here: the module will be
1296 config HPWDT_NMI_DECODING
1297 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1298 depends on HP_WATCHDOG
1301 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1302 "Generate NMI to System" virtual button. When an NMI is claimed
1303 by the driver, panic is called.
1306 tristate "Kontron COM Watchdog Timer"
1307 depends on MFD_KEMPLD
1308 select WATCHDOG_CORE
1310 Support for the PLD watchdog on some Kontron ETX and COMexpress
1311 (ETXexpress) modules
1313 This driver can also be built as a module. If so, the module will be
1317 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1320 This is a driver for National Semiconductor PC87307/PC97307 hardware
1321 watchdog cards as found on the SC1200. This watchdog is mainly used
1322 for power management purposes and can be used to power down the device
1323 during inactivity periods (includes interrupt activity monitoring).
1325 To compile this driver as a module, choose M here: the
1326 module will be called sc1200wdt.
1328 Most people will say N.
1331 tristate "National Semiconductor SCx200 Watchdog"
1332 depends on SCx200 && PCI
1334 Enable the built-in watchdog timer support on the National
1335 Semiconductor SCx200 processors.
1337 If compiled as a module, it will be called scx200_wdt.
1340 tristate "NS PC87413 watchdog"
1343 This is the driver for the hardware watchdog on the PC87413 chipset
1344 This watchdog simply watches your kernel to make sure it doesn't
1345 freeze, and if it does, it reboots your computer after a certain
1348 To compile this driver as a module, choose M here: the
1349 module will be called pc87413_wdt.
1351 Most people will say N.
1354 tristate "nVidia TCO Timer/Watchdog"
1355 depends on X86 && PCI
1357 Hardware driver for the TCO timer built into the nVidia Hub family
1358 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1359 watchdog timer that will reboot the machine after its second
1360 expiration. The expiration time can be configured with the
1361 "heartbeat" parameter.
1363 On some motherboards the driver may fail to reset the chipset's
1364 NO_REBOOT flag which prevents the watchdog from rebooting the
1365 machine. If this is the case you will get a kernel message like
1366 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1368 To compile this driver as a module, choose M here: the
1369 module will be called nv_tco.
1372 tristate "RDC R-321x SoC watchdog"
1373 depends on X86_RDC321X || COMPILE_TEST
1376 This is the driver for the built in hardware watchdog
1377 in the RDC R-321x SoC.
1379 To compile this driver as a module, choose M here: the
1380 module will be called rdc321x_wdt.
1383 tristate "SBC-60XX Watchdog Timer"
1386 This driver can be used with the watchdog timer found on some
1387 single board computers, namely the 6010 PII based computer.
1388 It may well work with other cards. It reads port 0x443 to enable
1389 and re-set the watchdog timer, and reads port 0x45 to disable
1390 the watchdog. If you have a card that behave in similar ways,
1391 you can probably make this driver work with your card as well.
1393 You can compile this driver directly into the kernel, or use
1394 it as a module. The module will be called sbc60xxwdt.
1397 tristate "SBC8360 Watchdog Timer"
1401 This is the driver for the hardware watchdog on the SBC8360 Single
1402 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1404 To compile this driver as a module, choose M here: the
1405 module will be called sbc8360.
1407 Most people will say N.
1410 tristate "SBC Nano 7240 Watchdog Timer"
1411 depends on X86_32 && !UML
1413 This is the driver for the hardware watchdog found on the IEI
1414 single board computers EPIC Nano 7240 (and likely others). This
1415 watchdog simply watches your kernel to make sure it doesn't freeze,
1416 and if it does, it reboots your computer after a certain amount of
1419 To compile this driver as a module, choose M here: the
1420 module will be called sbc7240_wdt.
1423 tristate "SMA CPU5 Watchdog"
1427 To compile this driver as a module, choose M here: the
1428 module will be called cpu5wdt.
1430 config SMSC_SCH311X_WDT
1431 tristate "SMSC SCH311X Watchdog Timer"
1434 This is the driver for the hardware watchdog timer on the
1435 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1436 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1439 To compile this driver as a module, choose M here: the
1440 module will be called sch311x_wdt.
1442 config SMSC37B787_WDT
1443 tristate "Winbond SMsC37B787 Watchdog Timer"
1446 This is the driver for the hardware watchdog component on the
1447 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1448 from Vision Systems and maybe others.
1450 This watchdog simply watches your kernel to make sure it doesn't
1451 freeze, and if it does, it reboots your computer after a certain
1454 Usually a userspace daemon will notify the kernel WDT driver that
1455 userspace is still alive, at regular intervals.
1457 To compile this driver as a module, choose M here: the
1458 module will be called smsc37b787_wdt.
1460 Most people will say N.
1463 tristate "TQ-Systems TQMX86 Watchdog Timer"
1465 select WATCHDOG_CORE
1467 This is the driver for the hardware watchdog timer in the TQMX86 IO
1468 controller found on some of their ComExpress Modules.
1470 To compile this driver as a module, choose M here; the module
1471 will be called tqmx86_wdt.
1473 Most people will say N.
1476 tristate "VIA Watchdog Timer"
1477 depends on X86 && PCI
1478 select WATCHDOG_CORE
1480 This is the driver for the hardware watchdog timer on VIA
1481 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1483 To compile this driver as a module, choose M here; the module
1484 will be called via_wdt.
1486 Most people will say N.
1489 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1491 select WATCHDOG_CORE
1493 This is the driver for the hardware watchdog on the following
1495 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1509 This watchdog simply watches your kernel to make sure it doesn't
1510 freeze, and if it does, it reboots your computer after a certain
1513 To compile this driver as a module, choose M here: the
1514 module will be called w83627hf_wdt.
1516 Most people will say N.
1519 tristate "W83877F (EMACS) Watchdog Timer"
1522 This is the driver for the hardware watchdog on the W83877F chipset
1523 as used in EMACS PC-104 motherboards (and likely others). This
1524 watchdog simply watches your kernel to make sure it doesn't freeze,
1525 and if it does, it reboots your computer after a certain amount of
1528 To compile this driver as a module, choose M here: the
1529 module will be called w83877f_wdt.
1531 Most people will say N.
1534 tristate "W83977F (PCM-5335) Watchdog Timer"
1537 This is the driver for the hardware watchdog on the W83977F I/O chip
1538 as used in AAEON's PCM-5335 SBC (and likely others). This
1539 watchdog simply watches your kernel to make sure it doesn't freeze,
1540 and if it does, it reboots your computer after a certain amount of
1543 To compile this driver as a module, choose M here: the
1544 module will be called w83977f_wdt.
1547 tristate "ZF MachZ Watchdog"
1550 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1551 N. This is the driver for the watchdog timer built-in on that
1552 processor using ZF-Logic interface. This watchdog simply watches
1553 your kernel to make sure it doesn't freeze, and if it does, it
1554 reboots your computer after a certain amount of time.
1556 To compile this driver as a module, choose M here: the
1557 module will be called machzwd.
1559 config SBC_EPX_C3_WATCHDOG
1560 tristate "Winsystems SBC EPX-C3 watchdog"
1563 This is the driver for the built-in watchdog timer on the EPX-C3
1564 Single-board computer made by Winsystems, Inc.
1566 *Note*: This hardware watchdog is not probeable and thus there
1567 is no way to know if writing to its IO address will corrupt
1568 your system or have any real effect. The only way to be sure
1569 that this driver does what you want is to make sure you
1570 are running it on an EPX-C3 from Winsystems with the watchdog
1571 timer at IO address 0x1ee and 0x1ef. It will write to both those
1572 IO ports. Basically, the assumption is made that if you compile
1573 this driver into your kernel and/or load it as a module, that you
1574 know what you are doing and that you are in fact running on an
1577 To compile this driver as a module, choose M here: the
1578 module will be called sbc_epx_c3.
1580 config INTEL_MEI_WDT
1581 tristate "Intel MEI iAMT Watchdog"
1582 depends on INTEL_MEI && X86
1583 select WATCHDOG_CORE
1585 A device driver for the Intel MEI iAMT watchdog.
1587 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1588 Whenever the OS hangs or crashes, iAMT will send an event
1589 to any subscriber to this event. The watchdog doesn't reset the
1592 To compile this driver as a module, choose M here:
1593 the module will be called mei_wdt.
1596 tristate "NI 903x/913x Watchdog"
1597 depends on X86 && ACPI
1598 select WATCHDOG_CORE
1600 This is the driver for the watchdog timer on the National Instruments
1601 903x/913x real-time controllers.
1603 To compile this driver as a module, choose M here: the module will be
1607 tristate "NIC7018 Watchdog"
1608 depends on X86 && ACPI
1609 select WATCHDOG_CORE
1611 Support for National Instruments NIC7018 Watchdog.
1613 To compile this driver as a module, choose M here: the module will be
1618 config M54xx_WATCHDOG
1619 tristate "MCF54xx watchdog support"
1622 To compile this driver as a module, choose M here: the
1623 module will be called m54xx_wdt.
1625 # MicroBlaze Architecture
1630 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1631 depends on ATH79 || (ARM && COMPILE_TEST)
1633 Hardware driver for the built-in watchdog timer on the Atheros
1634 AR71XX/AR724X/AR913X SoCs.
1637 tristate "Broadcom BCM47xx Watchdog Timer"
1638 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1639 select WATCHDOG_CORE
1641 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1644 tristate "IDT RC32434 SoC Watchdog Timer"
1645 depends on MIKROTIK_RB532
1647 Hardware driver for the IDT RC32434 SoC built-in
1650 To compile this driver as a module, choose M here: the
1651 module will be called rc32434_wdt.
1654 tristate "Indy/I2 Hardware Watchdog"
1655 depends on SGI_HAS_INDYDOG
1657 Hardware driver for the Indy's/I2's watchdog. This is a
1658 watchdog timer that will reboot the machine after a 60 second
1659 timer expired and no process has written to /dev/watchdog during
1663 tristate "Ingenic jz4740 SoC hardware watchdog"
1665 depends on COMMON_CLK
1666 select WATCHDOG_CORE
1669 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1672 tristate "MTX-1 Hardware Watchdog"
1673 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1675 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1676 will reboot the machine after a 100 seconds timer expired.
1679 tristate "Sibyte SoC hardware watchdog"
1680 depends on CPU_SB1 || (MIPS && COMPILE_TEST)
1682 Watchdog driver for the built in watchdog hardware in Sibyte
1683 SoC processors. There are apparently two watchdog timers
1684 on such processors; this driver supports only the first one,
1685 because currently Linux only supports exporting one watchdog
1688 To compile this driver as a loadable module, choose M here.
1689 The module will be called sb_wdog.
1692 tristate "TI AR7 Watchdog Timer"
1693 depends on AR7 || (MIPS && COMPILE_TEST)
1695 Hardware driver for the TI AR7 Watchdog Timer.
1698 tristate "Toshiba TXx9 Watchdog Timer"
1699 depends on CPU_TX39XX || CPU_TX49XX || (MIPS && COMPILE_TEST)
1700 select WATCHDOG_CORE
1702 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1705 tristate "Cavium OCTEON SOC family Watchdog Timer"
1706 depends on CAVIUM_OCTEON_SOC
1708 select WATCHDOG_CORE
1709 select EXPORT_UASM if OCTEON_WDT = m
1711 Hardware driver for OCTEON's on chip watchdog timer.
1712 Enables the watchdog for all cores running Linux. It
1713 installs a NMI handler and pokes the watchdog based on an
1714 interrupt. On first expiration of the watchdog, the
1715 interrupt handler pokes it. The second expiration causes an
1716 NMI that prints a message. The third expiration causes a
1719 When userspace has /dev/watchdog open, no poking is done
1720 from the first interrupt, it is then only poked when the
1724 tristate "Broadcom BCM63xx hardware watchdog"
1727 Watchdog driver for the built in watchdog hardware in Broadcom
1730 To compile this driver as a loadable module, choose M here.
1731 The module will be called bcm63xx_wdt.
1734 tristate "Broadcom BCM2835 hardware watchdog"
1735 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1736 select WATCHDOG_CORE
1738 Watchdog driver for the built in watchdog hardware in Broadcom
1741 To compile this driver as a loadable module, choose M here.
1742 The module will be called bcm2835_wdt.
1745 tristate "BCM Kona Watchdog"
1746 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1747 select WATCHDOG_CORE
1749 Support for the watchdog timer on the following Broadcom BCM281xx
1750 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1753 Say 'Y' or 'M' here to enable the driver. The module will be called
1756 config BCM_KONA_WDT_DEBUG
1757 bool "DEBUGFS support for BCM Kona Watchdog"
1758 depends on BCM_KONA_WDT
1760 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1761 access to the driver's internal data structures as well as watchdog
1762 timer hardware registres.
1764 If in doubt, say 'N'.
1767 tristate "BCM7038 Watchdog"
1768 select WATCHDOG_CORE
1769 depends on HAS_IOMEM
1770 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
1772 Watchdog driver for the built-in hardware in Broadcom 7038 and
1773 later SoCs used in set-top boxes. BCM7038 was made public
1774 during the 2004 CES, and since then, many Broadcom chips use this
1775 watchdog block, including some cable modem chips.
1778 tristate "Imagination Technologies PDC Watchdog Timer"
1779 depends on HAS_IOMEM
1780 depends on MIPS || COMPILE_TEST
1781 select WATCHDOG_CORE
1783 Driver for Imagination Technologies PowerDown Controller
1786 To compile this driver as a loadable module, choose M here.
1787 The module will be called imgpdc_wdt.
1790 tristate "Lantiq SoC watchdog"
1792 select WATCHDOG_CORE
1794 Hardware driver for the Lantiq SoC Watchdog Timer.
1796 config LOONGSON1_WDT
1797 tristate "Loongson1 SoC hardware watchdog"
1798 depends on MACH_LOONGSON32
1799 select WATCHDOG_CORE
1801 Hardware driver for the Loongson1 SoC Watchdog Timer.
1804 tristate "Ralink SoC watchdog"
1805 select WATCHDOG_CORE
1808 Hardware driver for the Ralink SoC Watchdog Timer.
1811 tristate "Mediatek SoC watchdog"
1812 select WATCHDOG_CORE
1813 depends on SOC_MT7620 || SOC_MT7621
1815 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1818 tristate "Microchip PIC32 hardware watchdog"
1819 select WATCHDOG_CORE
1820 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1822 Watchdog driver for the built in watchdog hardware in a PIC32.
1824 Configuration bits must be set appropriately for the watchdog to be
1825 controlled by this driver.
1827 To compile this driver as a loadable module, choose M here.
1828 The module will be called pic32-wdt.
1831 tristate "Microchip PIC32 Deadman Timer"
1832 select WATCHDOG_CORE
1833 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1835 Watchdog driver for PIC32 instruction fetch counting timer. This
1836 specific timer is typically be used in mission critical and safety
1837 critical applications, where any single failure of the software
1838 functionality and sequencing must be detected.
1840 To compile this driver as a loadable module, choose M here.
1841 The module will be called pic32-dmt.
1843 # PARISC Architecture
1845 # POWERPC Architecture
1848 tristate "GE Watchdog Timer"
1851 Watchdog timer found in a number of GE single board computers.
1854 bool "MPC52xx Watchdog Timer"
1855 depends on PPC_MPC52xx || COMPILE_TEST
1857 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1860 tristate "MPC8xxx Platform Watchdog Timer"
1861 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1862 select WATCHDOG_CORE
1864 This driver is for a SoC level watchdog that exists on some
1865 Freescale PowerPC processors. So far this driver supports:
1870 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1873 tristate "PIKA FPGA Watchdog"
1874 depends on WARP || (PPC64 && COMPILE_TEST)
1877 This enables the watchdog in the PIKA FPGA. Currently used on
1881 tristate "PowerPC Book-E Watchdog Timer"
1882 depends on BOOKE || 4xx
1883 select WATCHDOG_CORE
1885 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1886 MPC85xx SOCs and the IBM PowerPC 440.
1888 Please see Documentation/watchdog/watchdog-api.rst for
1891 config BOOKE_WDT_DEFAULT_TIMEOUT
1892 int "PowerPC Book-E Watchdog Timer Default Timeout"
1893 depends on BOOKE_WDT
1894 default 38 if PPC_FSL_BOOK3E
1895 range 0 63 if PPC_FSL_BOOK3E
1896 default 3 if !PPC_FSL_BOOK3E
1897 range 0 3 if !PPC_FSL_BOOK3E
1899 Select the default watchdog timer period to be used by the PowerPC
1900 Book-E watchdog driver. A watchdog "event" occurs when the bit
1901 position represented by this number transitions from zero to one.
1903 For Freescale Book-E processors, this is a number between 0 and 63.
1904 For other Book-E processors, this is a number between 0 and 3.
1906 The value can be overridden by the wdt_period command-line parameter.
1909 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1910 select WATCHDOG_CORE
1911 depends on GPIOLIB || COMPILE_TEST
1913 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1915 The driver can also be built as a module. If so, the module will be
1918 If unsure select N here.
1920 # PPC64 Architecture
1922 config WATCHDOG_RTAS
1923 tristate "RTAS watchdog"
1926 This driver adds watchdog support for the RTAS watchdog.
1928 To compile this driver as a module, choose M here. The module
1929 will be called wdrtas.
1933 config DIAG288_WATCHDOG
1934 tristate "System z diag288 Watchdog"
1936 select WATCHDOG_CORE
1938 IBM s/390 and zSeries machines running under z/VM 5.1 or later
1939 provide a virtual watchdog timer to their guest that cause a
1940 user define Control Program command to be executed after a
1942 LPAR provides a very similar interface. This driver handles
1945 To compile this driver as a module, choose M here. The module
1946 will be called diag288_wdt.
1948 # SUPERH (sh + sh64) Architecture
1951 tristate "SuperH Watchdog"
1952 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
1953 select WATCHDOG_CORE
1955 This driver adds watchdog support for the integrated watchdog in the
1956 SuperH processors. If you have one of these processors and wish
1957 to have watchdog support enabled, say Y, otherwise say N.
1959 As a side note, saying Y here will automatically boost HZ to 1000
1960 so that the timer has a chance to clear the overflow counter. On
1961 slower systems (such as the SH-2 and SH-3) this will likely yield
1962 some performance issues. As such, the WDT should be avoided here
1963 unless it is absolutely necessary.
1965 To compile this driver as a module, choose M here: the
1966 module will be called shwdt.
1968 # SPARC Architecture
1970 # SPARC64 Architecture
1972 config WATCHDOG_CP1XXX
1973 tristate "CP1XXX Hardware Watchdog support"
1974 depends on SPARC64 && PCI
1976 This is the driver for the hardware watchdog timers present on
1977 Sun Microsystems CompactPCI models CP1400 and CP1500.
1979 To compile this driver as a module, choose M here: the
1980 module will be called cpwatchdog.
1982 If you do not have a CompactPCI model CP1400 or CP1500, or
1983 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
1984 you should say N to this option.
1987 tristate "RIO Hardware Watchdog support"
1988 depends on SPARC64 && PCI
1990 Say Y here to support the hardware watchdog capability on Sun RIO
1991 machines. The watchdog timeout period is normally one minute but
1992 can be changed with a boot-time parameter.
1994 config WATCHDOG_SUN4V
1995 tristate "Sun4v Watchdog support"
1996 select WATCHDOG_CORE
1999 Say Y here to support the hypervisor watchdog capability embedded
2000 in the SPARC sun4v architecture.
2002 To compile this driver as a module, choose M here. The module will
2003 be called sun4v_wdt.
2005 # XTENSA Architecture
2010 tristate "Xen Watchdog support"
2012 select WATCHDOG_CORE
2014 Say Y here to support the hypervisor watchdog capability provided
2015 by Xen 4.0 and newer. The watchdog timeout period is normally one
2016 minute but can be changed with a boot-time parameter.
2019 tristate "UML watchdog"
2020 depends on UML || COMPILE_TEST
2023 # ISA-based Watchdog Cards
2026 comment "ISA-based Watchdog Cards"
2030 tristate "Berkshire Products ISA-PC Watchdog"
2033 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2034 This card simply watches your kernel to make sure it doesn't freeze,
2035 and if it does, it reboots your computer after a certain amount of
2036 time. This driver is like the WDT501 driver but for different
2037 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>.
2038 The PC watchdog cards can be ordered from <http://www.berkprod.com/>.
2040 To compile this driver as a module, choose M here: the
2041 module will be called pcwd.
2043 Most people will say N.
2046 tristate "Mixcom Watchdog"
2049 This is a driver for the Mixcom hardware watchdog cards. This
2050 watchdog simply watches your kernel to make sure it doesn't freeze,
2051 and if it does, it reboots your computer after a certain amount of
2054 To compile this driver as a module, choose M here: the
2055 module will be called mixcomwd.
2057 Most people will say N.
2060 tristate "WDT Watchdog timer"
2063 If you have a WDT500P or WDT501P watchdog board, say Y here,
2064 otherwise N. It is not possible to probe for this board, which means
2065 that you have to inform the kernel about the IO port and IRQ that
2066 is needed (you can do this via the io and irq parameters)
2068 To compile this driver as a module, choose M here: the
2069 module will be called wdt.
2072 # PCI-based Watchdog Cards
2075 comment "PCI-based Watchdog Cards"
2078 config PCIPCWATCHDOG
2079 tristate "Berkshire Products PCI-PC Watchdog"
2082 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2083 This card simply watches your kernel to make sure it doesn't freeze,
2084 and if it does, it reboots your computer after a certain amount of
2085 time. The card can also monitor the internal temperature of the PC.
2086 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2088 To compile this driver as a module, choose M here: the
2089 module will be called pcwd_pci.
2091 Most people will say N.
2094 tristate "PCI-WDT500/501 Watchdog timer"
2097 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2099 If you have a PCI-WDT501 watchdog board then you can enable the
2100 temperature sensor by setting the type parameter to 501.
2102 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2103 can do this via the tachometer parameter. Only do this if you have a
2104 fan tachometer actually set up.
2106 To compile this driver as a module, choose M here: the
2107 module will be called wdt_pci.
2110 # USB-based Watchdog Cards
2113 comment "USB-based Watchdog Cards"
2116 config USBPCWATCHDOG
2117 tristate "Berkshire Products USB-PC Watchdog"
2120 This is the driver for the Berkshire Products USB-PC Watchdog card.
2121 This card simply watches your kernel to make sure it doesn't freeze,
2122 and if it does, it reboots your computer after a certain amount of
2123 time. The card can also monitor the internal temperature of the PC.
2124 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2126 To compile this driver as a module, choose M here: the
2127 module will be called pcwd_usb.
2129 Most people will say N.
2131 config KEEMBAY_WATCHDOG
2132 tristate "Intel Keem Bay SoC non-secure watchdog"
2133 depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
2134 select WATCHDOG_CORE
2136 This option enable support for an In-secure watchdog timer driver for
2137 Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every
2138 count unit. An interrupt will be triggered, when the count crosses
2139 the threshold configured in the register.
2141 To compile this driver as a module, choose M here: the
2142 module will be called keembay_wdt.