1 # SPDX-License-Identifier: GPL-2.0-only
4 # Watchdog device configuration
8 bool "Watchdog Timer Support"
10 If you say Y here (and to one of the following options) and create a
11 character special file /dev/watchdog with major number 10 and minor
12 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
13 subsequently opening the file and then failing to write to it for
14 longer than 1 minute will result in rebooting the machine. This
15 could be useful for a networked machine that needs to come back
16 on-line as fast as possible after a lock-up. There's both a watchdog
17 implementation entirely in software (which can sometimes fail to
18 reboot the machine) and a driver for hardware watchdog boards, which
19 are more robust and can also keep track of the temperature inside
20 your computer. For details, read
21 <file:Documentation/watchdog/watchdog-api.rst> in the kernel source.
23 The watchdog is usually used together with the watchdog daemon
24 which is available from
25 <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can
26 also monitor NFS connections and can reboot the machine when the process
34 tristate "WatchDog Timer Driver Core"
36 Say Y here if you want to use the new watchdog timer driver core.
37 This driver provides a framework for all watchdog timer drivers
38 and gives them the /dev/watchdog interface (and later also the
41 config WATCHDOG_NOWAYOUT
42 bool "Disable watchdog shutdown on close"
44 The default watchdog behaviour (which you get if you say N here) is
45 to stop the timer if the process managing it closes the file
46 /dev/watchdog. It's always remotely possible that this process might
47 get killed. If you say Y here, the watchdog cannot be stopped once
50 config WATCHDOG_HANDLE_BOOT_ENABLED
51 bool "Update boot-enabled watchdog until userspace takes over"
54 The default watchdog behaviour (which you get if you say Y here) is
55 to ping watchdog devices that were enabled before the driver has
56 been loaded until control is taken over from userspace using the
57 /dev/watchdog file. If you say N here, the kernel will not update
58 the watchdog on its own. Thus if your userspace does not start fast
59 enough your device will reboot.
61 config WATCHDOG_OPEN_TIMEOUT
62 int "Timeout value for opening watchdog device"
65 The maximum time, in seconds, for which the watchdog framework takes
66 care of pinging a hardware watchdog. A value of 0 means infinite. The
67 value set here can be overridden by the commandline parameter
68 "watchdog.open_timeout".
71 bool "Read different watchdog information through sysfs"
73 Say Y here if you want to enable watchdog device status read through
76 comment "Watchdog Pretimeout Governors"
78 config WATCHDOG_PRETIMEOUT_GOV
79 bool "Enable watchdog pretimeout governors"
80 depends on WATCHDOG_CORE
82 The option allows to select watchdog pretimeout governors.
84 config WATCHDOG_PRETIMEOUT_GOV_SEL
86 depends on WATCHDOG_PRETIMEOUT_GOV
88 select WATCHDOG_PRETIMEOUT_GOV_PANIC if WATCHDOG_PRETIMEOUT_GOV_NOOP=n
90 if WATCHDOG_PRETIMEOUT_GOV
92 config WATCHDOG_PRETIMEOUT_GOV_NOOP
93 tristate "Noop watchdog pretimeout governor"
94 depends on WATCHDOG_CORE
97 Noop watchdog pretimeout governor, only an informational
98 message is added to kernel log buffer.
100 config WATCHDOG_PRETIMEOUT_GOV_PANIC
101 tristate "Panic watchdog pretimeout governor"
102 depends on WATCHDOG_CORE
103 default WATCHDOG_CORE
105 Panic watchdog pretimeout governor, on watchdog pretimeout
106 event put the kernel into panic.
109 prompt "Default Watchdog Pretimeout Governor"
110 default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
112 This option selects a default watchdog pretimeout governor.
113 The governor takes its action, if a watchdog is capable
114 to report a pretimeout event.
116 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP
118 depends on WATCHDOG_PRETIMEOUT_GOV_NOOP
120 Use noop watchdog pretimeout governor by default. If noop
121 governor is selected by a user, write a short message to
122 the kernel log buffer and don't do any system changes.
124 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
126 depends on WATCHDOG_PRETIMEOUT_GOV_PANIC
128 Use panic watchdog pretimeout governor by default, if
129 a watchdog pretimeout event happens, consider that
130 a watchdog feeder is dead and reboot is unavoidable.
134 endif # WATCHDOG_PRETIMEOUT_GOV
137 # General Watchdog drivers
140 comment "Watchdog Device Drivers"
142 # Architecture Independent
145 tristate "Software watchdog"
148 A software monitoring watchdog. This will fail to reboot your system
149 from some situations that the hardware watchdog will recover
150 from. Equally it's a lot cheaper to install.
152 To compile this driver as a module, choose M here: the
153 module will be called softdog.
155 config SOFT_WATCHDOG_PRETIMEOUT
156 bool "Software watchdog pretimeout governor support"
157 depends on SOFT_WATCHDOG && WATCHDOG_PRETIMEOUT_GOV
159 Enable this if you want to use pretimeout governors with the software
160 watchdog. Be aware that governors might affect the watchdog because it
161 is purely software, e.g. the panic governor will stall it!
163 config BD70528_WATCHDOG
164 tristate "ROHM BD70528 PMIC Watchdog"
165 depends on MFD_ROHM_BD70528
168 Support for the watchdog in the ROHM BD70528 PMIC. Watchdog trigger
171 Say Y here to include support for the ROHM BD70528 watchdog.
172 Alternatively say M to compile the driver as a module,
173 which will be called bd70528_wdt.
175 config DA9052_WATCHDOG
176 tristate "Dialog DA9052 Watchdog"
177 depends on PMIC_DA9052 || COMPILE_TEST
180 Support for the watchdog in the DA9052 PMIC. Watchdog trigger
183 Say Y here to include support for the DA9052 watchdog.
184 Alternatively say M to compile the driver as a module,
185 which will be called da9052_wdt.
187 config DA9055_WATCHDOG
188 tristate "Dialog Semiconductor DA9055 Watchdog"
189 depends on MFD_DA9055 || COMPILE_TEST
192 If you say yes here you get support for watchdog on the Dialog
193 Semiconductor DA9055 PMIC.
195 This driver can also be built as a module. If so, the module
196 will be called da9055_wdt.
198 config DA9063_WATCHDOG
199 tristate "Dialog DA9063 Watchdog"
200 depends on MFD_DA9063 || COMPILE_TEST
203 Support for the watchdog in the DA9063 PMIC.
205 This driver can be built as a module. The module name is da9063_wdt.
207 config DA9062_WATCHDOG
208 tristate "Dialog DA9062/61 Watchdog"
209 depends on MFD_DA9062 || COMPILE_TEST
212 Support for the watchdog in the DA9062 and DA9061 PMICs.
214 This driver can be built as a module. The module name is da9062_wdt.
217 tristate "Watchdog device controlled through GPIO-line"
221 If you say yes here you get support for watchdog device
222 controlled through GPIO-line.
224 config GPIO_WATCHDOG_ARCH_INITCALL
225 bool "Register the watchdog as early as possible"
226 depends on GPIO_WATCHDOG=y
228 In some situations, the default initcall level (module_init)
229 in not early enough in the boot process to avoid the watchdog
231 If you say yes here, the initcall level would be raised to
235 config MENF21BMC_WATCHDOG
236 tristate "MEN 14F021P00 BMC Watchdog"
237 depends on MFD_MENF21BMC || COMPILE_TEST
241 Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
243 This driver can also be built as a module. If so the module
244 will be called menf21bmc_wdt.
246 config MENZ069_WATCHDOG
247 tristate "MEN 16Z069 Watchdog"
251 Say Y here to include support for the MEN 16Z069 Watchdog.
253 This driver can also be built as a module. If so the module
254 will be called menz069_wdt.
256 config TANGOX_WATCHDOG
257 tristate "Sigma Designs SMP86xx/SMP87xx watchdog"
259 depends on ARCH_TANGO || COMPILE_TEST
262 Support for the watchdog in Sigma Designs SMP86xx (tango3)
263 and SMP87xx (tango4) family chips.
265 This driver can be built as a module. The module name is tangox_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.
346 config ARM_SP805_WATCHDOG
347 tristate "ARM SP805 Watchdog"
348 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
351 ARM Primecell SP805 Watchdog timer. This will reboot your system when
352 the timeout is reached.
354 config ARM_SBSA_WATCHDOG
355 tristate "ARM SBSA Generic Watchdog"
357 depends on ARM_ARCH_TIMER
360 ARM SBSA Generic Watchdog has two stage timeouts:
361 the first signal (WS0) is for alerting the system by interrupt,
362 the second one (WS1) is a real hardware reset.
363 More details: ARM DEN0029B - Server Base System Architecture (SBSA)
365 This driver can operate ARM SBSA Generic Watchdog as a single stage
366 or a two stages watchdog, it depends on the module parameter "action".
368 Note: the maximum timeout in the two stages mode is half of that in
369 the single stage mode.
371 To compile this driver as module, choose M here: The module
372 will be called sbsa_gwdt.
374 config ARMADA_37XX_WATCHDOG
375 tristate "Armada 37xx watchdog"
376 depends on ARCH_MVEBU || COMPILE_TEST
381 Say Y here to include support for the watchdog timer found on
382 Marvell Armada 37xx SoCs.
383 To compile this driver as a module, choose M here: the
384 module will be called armada_37xx_wdt.
386 config ASM9260_WATCHDOG
387 tristate "Alphascale ASM9260 watchdog"
388 depends on MACH_ASM9260 || COMPILE_TEST
391 select RESET_CONTROLLER
393 Watchdog timer embedded into Alphascale asm9260 chips. This will reboot your
394 system when the timeout is reached.
396 config AT91RM9200_WATCHDOG
397 tristate "AT91RM9200 watchdog"
398 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
400 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
401 system when the timeout is reached.
403 config AT91SAM9X_WATCHDOG
404 tristate "AT91SAM9X / AT91CAP9 watchdog"
405 depends on ARCH_AT91 || COMPILE_TEST
408 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
409 reboot your system when the timeout is reached.
411 config SAMA5D4_WATCHDOG
412 tristate "Atmel SAMA5D4 Watchdog Timer"
413 depends on ARCH_AT91 || COMPILE_TEST
416 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
417 Its Watchdog Timer Mode Register can be written more than once.
418 This will reboot your system when the timeout is reached.
420 config CADENCE_WATCHDOG
421 tristate "Cadence Watchdog Timer"
425 Say Y here if you want to include support for the watchdog
426 timer in the Xilinx Zynq.
428 config 21285_WATCHDOG
429 tristate "DC21285 watchdog"
430 depends on FOOTBRIDGE
432 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
433 here if you wish to use this. Alternatively say M to compile the
434 driver as a module, which will be called wdt285.
436 This driver does not work on all machines. In particular, early CATS
437 boards have hardware problems that will cause the machine to simply
438 lock up if the watchdog fires.
440 "If in doubt, leave it out" - say N.
443 tristate "NetWinder WB83C977 watchdog"
444 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
446 Say Y here to include support for the WB977 watchdog included in
447 NetWinder machines. Alternatively say M to compile the driver as
448 a module, which will be called wdt977.
450 Not sure? It's safe to say N.
452 config FTWDT010_WATCHDOG
453 tristate "Faraday Technology FTWDT010 watchdog"
454 depends on ARM || COMPILE_TEST
458 Say Y here if to include support for the Faraday Technology
459 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
462 To compile this driver as a module, choose M here: the
463 module will be called ftwdt010_wdt.
465 config IXP4XX_WATCHDOG
466 tristate "IXP4xx Watchdog"
467 depends on ARCH_IXP4XX
469 Say Y here if to include support for the watchdog timer
470 in the Intel IXP4xx network processors. This driver can
471 be built as a module by choosing M. The module will
472 be called ixp4xx_wdt.
474 Note: The internal IXP4xx watchdog does a soft CPU reset
475 which doesn't reset any peripherals. There are circumstances
476 where the watchdog will fail to reset the board correctly
477 (e.g., if the boot ROM is in an unreadable state).
479 Say N if you are unsure.
481 config HAVE_S3C2410_WATCHDOG
484 This will include watchdog timer support for Samsung SoCs. If
485 you want to include watchdog support for any machine, kindly
486 select this in the respective mach-XXXX/Kconfig file.
488 config S3C2410_WATCHDOG
489 tristate "S3C2410 Watchdog"
490 depends on HAVE_S3C2410_WATCHDOG || COMPILE_TEST
492 select MFD_SYSCON if ARCH_EXYNOS
494 Watchdog timer block in the Samsung SoCs. This will reboot
495 the system when the timer expires with the watchdog enabled.
497 The driver is limited by the speed of the system's PCLK
498 signal, so with reasonably fast systems (PCLK around 50-66MHz)
499 then watchdog intervals of over approximately 20seconds are
502 The driver can be built as a module by choosing M, and will
503 be called s3c2410_wdt
505 config SA1100_WATCHDOG
506 tristate "SA1100/PXA2xx watchdog"
507 depends on ARCH_SA1100 || ARCH_PXA
509 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
510 reboot your system when timeout is reached.
512 NOTE: once enabled, this timer cannot be disabled.
514 To compile this driver as a module, choose M here: the
515 module will be called sa1100_wdt.
518 tristate "Synopsys DesignWare watchdog"
522 Say Y here if to include support for the Synopsys DesignWare
523 watchdog timer found in many chips.
524 To compile this driver as a module, choose M here: the
525 module will be called dw_wdt.
527 config EP93XX_WATCHDOG
528 tristate "EP93xx Watchdog"
529 depends on ARCH_EP93XX || COMPILE_TEST
532 Say Y here if to include support for the watchdog timer
533 embedded in the Cirrus Logic EP93xx family of devices.
535 To compile this driver as a module, choose M here: the
536 module will be called ep93xx_wdt.
539 tristate "OMAP Watchdog"
540 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
543 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog. Say 'Y'
544 here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
546 config PNX4008_WATCHDOG
547 tristate "LPC32XX Watchdog"
548 depends on ARCH_LPC32XX || COMPILE_TEST
551 Say Y here if to include support for the watchdog timer
552 in the LPC32XX processor.
553 This driver can be built as a module by choosing M. The module
554 will be called pnx4008_wdt.
556 Say N if you are unsure.
559 tristate "IOP Watchdog"
560 depends on ARCH_IOP13XX
561 select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X)
563 Say Y here if to include support for the watchdog timer
564 in the Intel IOP3XX & IOP13XX I/O Processors. This driver can
565 be built as a module by choosing M. The module will
568 Note: The IOP13XX watchdog does an Internal Bus Reset which will
569 affect both cores and the peripherals of the IOP. The ATU-X
570 and/or ATUe configuration registers will remain intact, but if
571 operating as an Root Complex and/or Central Resource, the PCI-X
572 and/or PCIe busses will also be reset. THIS IS A VERY BIG HAMMER.
574 config DAVINCI_WATCHDOG
575 tristate "DaVinci watchdog"
576 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
579 Say Y here if to include support for the watchdog timer
580 in the DaVinci DM644x/DM646x or Keystone processors.
581 To compile this driver as a module, choose M here: the
582 module will be called davinci_wdt.
584 NOTE: once enabled, this timer cannot be disabled.
585 Say N if you are unsure.
587 config ORION_WATCHDOG
588 tristate "Orion watchdog"
589 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || (COMPILE_TEST && !ARCH_EBSA110)
593 Say Y here if to include support for the watchdog timer
594 in the Marvell Orion5x and Kirkwood ARM SoCs.
595 To compile this driver as a module, choose M here: the
596 module will be called orion_wdt.
598 config RN5T618_WATCHDOG
599 tristate "Ricoh RN5T618 watchdog"
600 depends on MFD_RN5T618 || COMPILE_TEST
603 If you say yes here you get support for watchdog on the Ricoh
606 This driver can also be built as a module. If so, the module
607 will be called rn5t618_wdt.
609 config SUNXI_WATCHDOG
610 tristate "Allwinner SoCs watchdog support"
611 depends on ARCH_SUNXI || COMPILE_TEST
614 Say Y here to include support for the watchdog timer
616 To compile this driver as a module, choose M here: the
617 module will be called sunxi_wdt.
619 config COH901327_WATCHDOG
620 bool "ST-Ericsson COH 901 327 watchdog"
621 depends on ARCH_U300 || (ARM && COMMON_CLK && COMPILE_TEST)
622 default y if MACH_U300
625 Say Y here to include Watchdog timer support for the
626 watchdog embedded into the ST-Ericsson U300 series platforms.
627 This watchdog is used to reset the system and thus cannot be
628 compiled as a module.
630 config NPCM7XX_WATCHDOG
631 tristate "Nuvoton NPCM750 watchdog"
632 depends on ARCH_NPCM || COMPILE_TEST
633 default y if ARCH_NPCM7XX
636 Say Y here to include Watchdog timer support for the
637 watchdog embedded into the NPCM7xx.
638 This watchdog is used to reset the system and thus cannot be
639 compiled as a module.
641 config TWL4030_WATCHDOG
642 tristate "TWL4030 Watchdog"
643 depends on TWL4030_CORE
646 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
647 watchdog timer support for TWL4030 chips.
649 config STMP3XXX_RTC_WATCHDOG
650 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
651 depends on RTC_DRV_STMP || COMPILE_TEST
654 Say Y here to include support for the watchdog timer inside
655 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
656 To compile this driver as a module, choose M here: the
657 module will be called stmp3xxx_rtc_wdt.
659 config TS4800_WATCHDOG
660 tristate "TS-4800 Watchdog"
661 depends on HAS_IOMEM && OF
662 depends on SOC_IMX51 || COMPILE_TEST
666 Technologic Systems TS-4800 has watchdog timer implemented in
667 an external FPGA. Say Y here if you want to support for the
668 watchdog timer on TS-4800 board.
670 config TS72XX_WATCHDOG
671 tristate "TS-72XX SBC Watchdog"
672 depends on MACH_TS72XX || COMPILE_TEST
674 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
675 watchdog timer implemented in a external CPLD chip. Say Y here
676 if you want to support for the watchdog timer on TS-72XX boards.
678 To compile this driver as a module, choose M here: the
679 module will be called ts72xx_wdt.
681 config MAX63XX_WATCHDOG
682 tristate "Max63xx watchdog"
686 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
688 config MAX77620_WATCHDOG
689 tristate "Maxim Max77620 Watchdog Timer"
690 depends on MFD_MAX77620 || COMPILE_TEST
693 This is the driver for the Max77620 watchdog timer.
694 Say 'Y' here to enable the watchdog timer support for
695 MAX77620 chips. To compile this driver as a module,
696 choose M here: the module will be called max77620_wdt.
699 tristate "IMX2+ Watchdog"
700 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
704 This is the driver for the hardware watchdog
705 on the Freescale IMX2 and later processors.
706 If you have one of these processors and wish to have
707 watchdog support enabled, say Y, otherwise say N.
709 To compile this driver as a module, choose M here: the
710 module will be called imx2_wdt.
713 tristate "IMX SC Watchdog"
714 depends on HAVE_ARM_SMCCC
718 This is the driver for the system controller watchdog
719 on the NXP i.MX SoCs with system controller inside, the
720 watchdog driver will call ARM SMC API and trap into
721 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
722 will request system controller to execute the operations.
723 If you have one of these processors and wish to have
724 watchdog support enabled, say Y, otherwise say N.
726 To compile this driver as a module, choose M here: the
727 module will be called imx_sc_wdt.
730 tristate "IMX7ULP Watchdog"
731 depends on ARCH_MXC || COMPILE_TEST
734 This is the driver for the hardware watchdog on the Freescale
735 IMX7ULP and later processors. If you have one of these
736 processors and wish to have watchdog support enabled,
737 say Y, otherwise say N.
739 To compile this driver as a module, choose M here: the
740 module will be called imx7ulp_wdt.
742 config UX500_WATCHDOG
743 tristate "ST-Ericsson Ux500 watchdog"
744 depends on MFD_DB8500_PRCMU
748 Say Y here to include Watchdog timer support for the watchdog
749 existing in the prcmu of ST-Ericsson Ux500 series platforms.
751 To compile this driver as a module, choose M here: the
752 module will be called ux500_wdt.
755 tristate "Retu watchdog"
759 Retu watchdog driver for Nokia Internet Tablets (770, N800,
760 N810). At least on N800 the watchdog cannot be disabled, so
761 this driver is essential and you should enable it.
763 To compile this driver as a module, choose M here: the
764 module will be called retu_wdt.
767 tristate "MOXART watchdog"
768 depends on ARCH_MOXART || COMPILE_TEST
770 Say Y here to include Watchdog timer support for the watchdog
771 existing on the MOXA ART SoC series platforms.
773 To compile this driver as a module, choose M here: the
774 module will be called moxart_wdt.
776 config SIRFSOC_WATCHDOG
777 tristate "SiRFSOC watchdog"
779 depends on ARCH_SIRF || COMPILE_TEST
783 Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When
784 the watchdog triggers the system will be reset.
786 config ST_LPC_WATCHDOG
787 tristate "STMicroelectronics LPC Watchdog"
788 depends on ARCH_STI || COMPILE_TEST
792 Say Y here to include STMicroelectronics Low Power Controller
793 (LPC) based Watchdog timer support.
795 To compile this driver as a module, choose M here: the
796 module will be called st_lpc_wdt.
798 config TEGRA_WATCHDOG
799 tristate "Tegra watchdog"
800 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
803 Say Y here to include support for the watchdog timer
804 embedded in NVIDIA Tegra SoCs.
806 To compile this driver as a module, choose M here: the
807 module will be called tegra_wdt.
810 tristate "QCOM watchdog"
812 depends on ARCH_QCOM || COMPILE_TEST
815 Say Y here to include Watchdog timer support for the watchdog found
816 on QCOM chipsets. Currently supported targets are the MSM8960,
817 APQ8064, and IPQ8064.
819 To compile this driver as a module, choose M here: the
820 module will be called qcom_wdt.
822 config MESON_GXBB_WATCHDOG
823 tristate "Amlogic Meson GXBB SoCs watchdog support"
824 depends on ARCH_MESON || COMPILE_TEST
827 Say Y here to include support for the watchdog timer
828 in Amlogic Meson GXBB SoCs.
829 To compile this driver as a module, choose M here: the
830 module will be called meson_gxbb_wdt.
832 config MESON_WATCHDOG
833 tristate "Amlogic Meson SoCs watchdog support"
834 depends on ARCH_MESON || COMPILE_TEST
837 Say Y here to include support for the watchdog timer
838 in Amlogic Meson SoCs.
839 To compile this driver as a module, choose M here: the
840 module will be called meson_wdt.
842 config MEDIATEK_WATCHDOG
843 tristate "Mediatek SoCs watchdog support"
844 depends on ARCH_MEDIATEK || COMPILE_TEST
847 Say Y here to include support for the watchdog timer
849 To compile this driver as a module, choose M here: the
850 module will be called mtk_wdt.
852 config DIGICOLOR_WATCHDOG
853 tristate "Conexant Digicolor SoCs watchdog support"
854 depends on ARCH_DIGICOLOR || COMPILE_TEST
857 Say Y here to include support for the watchdog timer
858 in Conexant Digicolor SoCs.
859 To compile this driver as a module, choose M here: the
860 module will be called digicolor_wdt.
862 config LPC18XX_WATCHDOG
863 tristate "LPC18xx/43xx Watchdog"
864 depends on ARCH_LPC18XX || COMPILE_TEST
868 Say Y here if to include support for the watchdog timer
869 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
871 To compile this driver as a module, choose M here: the
872 module will be called lpc18xx_wdt.
874 config ATLAS7_WATCHDOG
875 tristate "CSRatlas7 watchdog"
876 depends on ARCH_ATLAS7 || COMPILE_TEST
878 Say Y here to include Watchdog timer support for the watchdog
879 existing on the CSRatlas7 series platforms.
881 To compile this driver as a module, choose M here: the
882 module will be called atlas7_wdt.
885 tristate "Renesas WDT Watchdog"
886 depends on ARCH_RENESAS || COMPILE_TEST
889 This driver adds watchdog support for the integrated watchdogs in the
890 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
892 config RENESAS_RZAWDT
893 tristate "Renesas RZ/A WDT Watchdog"
894 depends on ARCH_RENESAS || COMPILE_TEST
897 This driver adds watchdog support for the integrated watchdogs in the
898 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
900 config ASPEED_WATCHDOG
901 tristate "Aspeed BMC watchdog support"
902 depends on ARCH_ASPEED || COMPILE_TEST
905 Say Y here to include support for the watchdog timer
908 This driver is required to reboot the SoC.
910 To compile this driver as a module, choose M here: the
911 module will be called aspeed_wdt.
913 config ZX2967_WATCHDOG
914 tristate "ZTE zx2967 SoCs watchdog support"
918 Say Y here to include support for the watchdog timer
920 To compile this driver as a module, choose M here: the
921 module will be called zx2967_wdt.
923 config STM32_WATCHDOG
924 tristate "STM32 Independent WatchDoG (IWDG) support"
925 depends on ARCH_STM32
929 Say Y here to include support for the watchdog timer
932 To compile this driver as a module, choose M here: the
933 module will be called stm32_iwdg.
935 config STPMIC1_WATCHDOG
936 tristate "STPMIC1 PMIC watchdog support"
937 depends on MFD_STPMIC1
940 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
941 If the watchdog timer expires, stpmic1 will shut down all its power
944 To compile this driver as a module, choose M here: the
945 module will be called spmic1_wdt.
947 config UNIPHIER_WATCHDOG
948 tristate "UniPhier watchdog support"
949 depends on ARCH_UNIPHIER || COMPILE_TEST
950 depends on OF && MFD_SYSCON
953 Say Y here to include support watchdog timer embedded
954 into the UniPhier system.
956 To compile this driver as a module, choose M here: the
957 module will be called uniphier_wdt.
959 config RTD119X_WATCHDOG
960 bool "Realtek RTD119x/RTD129x watchdog support"
961 depends on ARCH_REALTEK || COMPILE_TEST
966 Say Y here to include support for the watchdog timer in
967 Realtek RTD1295 SoCs.
970 tristate "Spreadtrum watchdog support"
971 depends on ARCH_SPRD || COMPILE_TEST
974 Say Y here to include watchdog timer supported
975 by Spreadtrum system.
977 config PM8916_WATCHDOG
978 tristate "QCOM PM8916 pmic watchdog"
979 depends on OF && MFD_SPMI_PMIC
982 Say Y here to include support watchdog timer embedded into the
985 # X86 (i386 + ia64 + x86_64) Architecture
988 tristate "Acquire SBC Watchdog Timer"
991 This is the driver for the hardware watchdog on Single Board
992 Computers produced by Acquire Inc (and others). This watchdog
993 simply watches your kernel to make sure it doesn't freeze, and if
994 it does, it reboots your computer after a certain amount of time.
996 To compile this driver as a module, choose M here: the
997 module will be called acquirewdt.
999 Most people will say N.
1001 config ADVANTECH_WDT
1002 tristate "Advantech SBC Watchdog Timer"
1005 If you are configuring a Linux kernel for the Advantech single-board
1006 computer, say `Y' here to support its built-in watchdog timer
1007 feature. More information can be found at
1008 <http://www.advantech.com.tw/products/>
1011 tristate "ALi M1535 PMU Watchdog Timer"
1012 depends on X86 && PCI
1014 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1016 To compile this driver as a module, choose M here: the
1017 module will be called alim1535_wdt.
1019 Most people will say N.
1022 tristate "ALi M7101 PMU Computer Watchdog"
1025 This is the driver for the hardware watchdog on the ALi M7101 PMU
1026 as used in the x86 Cobalt servers and also found in some
1027 SPARC Netra servers too.
1029 To compile this driver as a module, choose M here: the
1030 module will be called alim7101_wdt.
1032 Most people will say N.
1035 tristate "WinSystems EBC-C384 Watchdog Timer"
1038 select WATCHDOG_CORE
1040 Enables watchdog timer support for the watchdog timer on the
1041 WinSystems EBC-C384 motherboard. The timeout may be configured via
1042 the timeout module parameter.
1045 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1048 This is the driver for the hardware watchdog on the Fintek F71808E,
1049 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1050 F81866 Super I/O controllers.
1052 You can compile this driver directly into the kernel, or use
1053 it as a module. The module will be called f71808e_wdt.
1056 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1057 depends on X86 && PCI
1058 select WATCHDOG_CORE
1060 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1061 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1062 the machine after its expiration. The expiration time can be
1063 configured with the "heartbeat" parameter.
1065 To compile this driver as a module, choose M here: the
1066 module will be called sp5100_tco.
1069 tristate "AMD Geode CS5535/CS5536 Watchdog"
1070 depends on CS5535_MFGPT
1072 This driver enables a watchdog capability built into the
1073 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1074 processors. This watchdog watches your kernel to make sure
1075 it doesn't freeze, and if it does, it reboots your computer after
1076 a certain amount of time.
1078 You can compile this driver directly into the kernel, or use
1079 it as a module. The module will be called geodewdt.
1082 tristate "AMD Elan SC520 processor Watchdog"
1083 depends on MELAN || COMPILE_TEST
1085 This is the driver for the hardware watchdog built in to the
1086 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1087 This watchdog simply watches your kernel to make sure it doesn't
1088 freeze, and if it does, it reboots your computer after a certain
1091 You can compile this driver directly into the kernel, or use
1092 it as a module. The module will be called sc520_wdt.
1094 config SBC_FITPC2_WATCHDOG
1095 tristate "Compulab SBC-FITPC2 watchdog"
1098 This is the driver for the built-in watchdog timer on the fit-PC2,
1099 fit-PC2i, CM-iAM single-board computers made by Compulab.
1101 It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux.
1102 When "Watchdog Timer Value" enabled one can set 31-255 s operational range.
1104 Entering BIOS setup temporary disables watchdog operation regardless to current state,
1105 so system will not be restarted while user in BIOS setup.
1107 Once watchdog was enabled the system will be restarted every
1108 "Watchdog Timer Value" period, so to prevent it user can restart or
1109 disable the watchdog.
1111 To compile this driver as a module, choose M here: the
1112 module will be called sbc_fitpc2_wdt.
1114 Most people will say N.
1117 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1120 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1121 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1122 information are at <http://www.eurotech.it/>.
1125 tristate "IB700 SBC Watchdog Timer"
1128 This is the driver for the hardware watchdog on the IB700 Single
1129 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
1130 simply watches your kernel to make sure it doesn't freeze, and if
1131 it does, it reboots your computer after a certain amount of time.
1133 This driver is like the WDT501 driver but for slightly different hardware.
1135 To compile this driver as a module, choose M here: the
1136 module will be called ib700wdt.
1138 Most people will say N.
1141 tristate "IBM Automatic Server Restart"
1144 This is the driver for the IBM Automatic Server Restart watchdog
1145 timer built-in into some eServer xSeries machines.
1147 To compile this driver as a module, choose M here: the
1148 module will be called ibmasr.
1151 tristate "ICP Single Board Computer Watchdog Timer"
1154 This is a driver for the hardware watchdog on the ICP Single
1155 Board Computer. This driver is working on (at least) the following
1156 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1158 To compile this driver as a module, choose M here: the
1159 module will be called wafer5823wdt.
1162 tristate "Intel 6300ESB Timer/Watchdog"
1164 select WATCHDOG_CORE
1166 Hardware driver for the watchdog timer built into the Intel
1167 6300ESB controller hub.
1169 To compile this driver as a module, choose M here: the
1170 module will be called i6300esb.
1173 tristate "Intel Atom E6xx Watchdog"
1174 depends on X86 && PCI
1175 select WATCHDOG_CORE
1179 Hardware driver for the watchdog timer built into the Intel
1180 Atom E6XX (TunnelCreek) processor.
1182 To compile this driver as a module, choose M here: the
1183 module will be called ie6xx_wdt.
1185 config INTEL_SCU_WATCHDOG
1186 bool "Intel SCU Watchdog for Mobile Platforms"
1187 depends on X86_INTEL_MID
1189 Hardware driver for the watchdog time built into the Intel SCU
1190 for Intel Mobile Platforms.
1192 To compile this driver as a module, choose M here.
1194 config INTEL_MID_WATCHDOG
1195 tristate "Intel MID Watchdog Timer"
1196 depends on X86_INTEL_MID
1197 select WATCHDOG_CORE
1199 Watchdog timer driver built into the Intel SCU for Intel MID
1202 This driver currently supports only the watchdog evolution
1203 implementation in SCU, available for Merrifield generation.
1205 To compile this driver as a module, choose M here.
1208 tristate "Intel TCO Timer/Watchdog"
1209 depends on (X86 || IA64) && PCI
1210 select WATCHDOG_CORE
1211 depends on I2C || I2C=n
1212 select LPC_ICH if !EXPERT
1213 select I2C_I801 if !EXPERT && I2C
1215 Hardware driver for the intel TCO timer based watchdog devices.
1216 These drivers are included in the Intel 82801 I/O Controller
1217 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1220 The TCO (Total Cost of Ownership) timer is a watchdog timer
1221 that will reboot the machine after its second expiration. The
1222 expiration time can be configured with the "heartbeat" parameter.
1224 On some motherboards the driver may fail to reset the chipset's
1225 NO_REBOOT flag which prevents the watchdog from rebooting the
1226 machine. If this is the case you will get a kernel message like
1227 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1229 To compile this driver as a module, choose M here: the
1230 module will be called iTCO_wdt.
1232 config ITCO_VENDOR_SUPPORT
1233 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1236 Add vendor specific support to the intel TCO timer based watchdog
1237 devices. At this moment we only have additional support for some
1238 SuperMicro Inc. motherboards.
1241 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1244 This is the driver for the built-in watchdog timer on the IT8712F
1245 Super I/0 chipset used on many motherboards.
1247 If the driver does not work, then make sure that the game port in
1248 the BIOS is enabled.
1250 To compile this driver as a module, choose M here: the
1251 module will be called it8712f_wdt.
1254 tristate "IT87 Watchdog Timer"
1256 select WATCHDOG_CORE
1258 This is the driver for the hardware watchdog on the ITE IT8607,
1259 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1260 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1261 IT8783 Super I/O chips.
1263 This watchdog simply watches your kernel to make sure it doesn't
1264 freeze, and if it does, it reboots your computer after a certain
1267 To compile this driver as a module, choose M here: the module will
1271 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1272 select WATCHDOG_CORE
1273 depends on X86 && PCI
1275 A software monitoring watchdog and NMI handling driver. This driver
1276 will detect lockups and provide a stack trace. This is a driver that
1277 will only load on an HP ProLiant system with a minimum of iLO2 support.
1278 To compile this driver as a module, choose M here: the module will be
1281 config HPWDT_NMI_DECODING
1282 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1283 depends on HP_WATCHDOG
1286 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1287 "Generate NMI to System" virtual button. When an NMI is claimed
1288 by the driver, panic is called.
1291 tristate "Kontron COM Watchdog Timer"
1292 depends on MFD_KEMPLD
1293 select WATCHDOG_CORE
1295 Support for the PLD watchdog on some Kontron ETX and COMexpress
1296 (ETXexpress) modules
1298 This driver can also be built as a module. If so, the module will be
1302 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1305 This is a driver for National Semiconductor PC87307/PC97307 hardware
1306 watchdog cards as found on the SC1200. This watchdog is mainly used
1307 for power management purposes and can be used to power down the device
1308 during inactivity periods (includes interrupt activity monitoring).
1310 To compile this driver as a module, choose M here: the
1311 module will be called sc1200wdt.
1313 Most people will say N.
1316 tristate "National Semiconductor SCx200 Watchdog"
1317 depends on SCx200 && PCI
1319 Enable the built-in watchdog timer support on the National
1320 Semiconductor SCx200 processors.
1322 If compiled as a module, it will be called scx200_wdt.
1325 tristate "NS PC87413 watchdog"
1328 This is the driver for the hardware watchdog on the PC87413 chipset
1329 This watchdog simply watches your kernel to make sure it doesn't
1330 freeze, and if it does, it reboots your computer after a certain
1333 To compile this driver as a module, choose M here: the
1334 module will be called pc87413_wdt.
1336 Most people will say N.
1339 tristate "nVidia TCO Timer/Watchdog"
1340 depends on X86 && PCI
1342 Hardware driver for the TCO timer built into the nVidia Hub family
1343 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1344 watchdog timer that will reboot the machine after its second
1345 expiration. The expiration time can be configured with the
1346 "heartbeat" parameter.
1348 On some motherboards the driver may fail to reset the chipset's
1349 NO_REBOOT flag which prevents the watchdog from rebooting the
1350 machine. If this is the case you will get a kernel message like
1351 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1353 To compile this driver as a module, choose M here: the
1354 module will be called nv_tco.
1357 tristate "RDC R-321x SoC watchdog"
1358 depends on X86_RDC321X || COMPILE_TEST
1361 This is the driver for the built in hardware watchdog
1362 in the RDC R-321x SoC.
1364 To compile this driver as a module, choose M here: the
1365 module will be called rdc321x_wdt.
1368 tristate "SBC-60XX Watchdog Timer"
1371 This driver can be used with the watchdog timer found on some
1372 single board computers, namely the 6010 PII based computer.
1373 It may well work with other cards. It reads port 0x443 to enable
1374 and re-set the watchdog timer, and reads port 0x45 to disable
1375 the watchdog. If you have a card that behave in similar ways,
1376 you can probably make this driver work with your card as well.
1378 You can compile this driver directly into the kernel, or use
1379 it as a module. The module will be called sbc60xxwdt.
1382 tristate "SBC8360 Watchdog Timer"
1386 This is the driver for the hardware watchdog on the SBC8360 Single
1387 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1389 To compile this driver as a module, choose M here: the
1390 module will be called sbc8360.
1392 Most people will say N.
1395 tristate "SBC Nano 7240 Watchdog Timer"
1396 depends on X86_32 && !UML
1398 This is the driver for the hardware watchdog found on the IEI
1399 single board computers EPIC Nano 7240 (and likely others). This
1400 watchdog simply watches your kernel to make sure it doesn't freeze,
1401 and if it does, it reboots your computer after a certain amount of
1404 To compile this driver as a module, choose M here: the
1405 module will be called sbc7240_wdt.
1408 tristate "SMA CPU5 Watchdog"
1412 To compile this driver as a module, choose M here: the
1413 module will be called cpu5wdt.
1415 config SMSC_SCH311X_WDT
1416 tristate "SMSC SCH311X Watchdog Timer"
1419 This is the driver for the hardware watchdog timer on the
1420 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1421 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1424 To compile this driver as a module, choose M here: the
1425 module will be called sch311x_wdt.
1427 config SMSC37B787_WDT
1428 tristate "Winbond SMsC37B787 Watchdog Timer"
1431 This is the driver for the hardware watchdog component on the
1432 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1433 from Vision Systems and maybe others.
1435 This watchdog simply watches your kernel to make sure it doesn't
1436 freeze, and if it does, it reboots your computer after a certain
1439 Usually a userspace daemon will notify the kernel WDT driver that
1440 userspace is still alive, at regular intervals.
1442 To compile this driver as a module, choose M here: the
1443 module will be called smsc37b787_wdt.
1445 Most people will say N.
1448 tristate "TQ-Systems TQMX86 Watchdog Timer"
1450 select WATCHDOG_CORE
1452 This is the driver for the hardware watchdog timer in the TQMX86 IO
1453 controller found on some of their ComExpress Modules.
1455 To compile this driver as a module, choose M here; the module
1456 will be called tqmx86_wdt.
1458 Most people will say N.
1461 tristate "VIA Watchdog Timer"
1462 depends on X86 && PCI
1463 select WATCHDOG_CORE
1465 This is the driver for the hardware watchdog timer on VIA
1466 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1468 To compile this driver as a module, choose M here; the module
1469 will be called via_wdt.
1471 Most people will say N.
1474 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1476 select WATCHDOG_CORE
1478 This is the driver for the hardware watchdog on the following
1480 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1493 This watchdog simply watches your kernel to make sure it doesn't
1494 freeze, and if it does, it reboots your computer after a certain
1497 To compile this driver as a module, choose M here: the
1498 module will be called w83627hf_wdt.
1500 Most people will say N.
1503 tristate "W83877F (EMACS) Watchdog Timer"
1506 This is the driver for the hardware watchdog on the W83877F chipset
1507 as used in EMACS PC-104 motherboards (and likely others). This
1508 watchdog simply watches your kernel to make sure it doesn't freeze,
1509 and if it does, it reboots your computer after a certain amount of
1512 To compile this driver as a module, choose M here: the
1513 module will be called w83877f_wdt.
1515 Most people will say N.
1518 tristate "W83977F (PCM-5335) Watchdog Timer"
1521 This is the driver for the hardware watchdog on the W83977F I/O chip
1522 as used in AAEON's PCM-5335 SBC (and likely others). This
1523 watchdog simply watches your kernel to make sure it doesn't freeze,
1524 and if it does, it reboots your computer after a certain amount of
1527 To compile this driver as a module, choose M here: the
1528 module will be called w83977f_wdt.
1531 tristate "ZF MachZ Watchdog"
1534 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1535 N. This is the driver for the watchdog timer built-in on that
1536 processor using ZF-Logic interface. This watchdog simply watches
1537 your kernel to make sure it doesn't freeze, and if it does, it
1538 reboots your computer after a certain amount of time.
1540 To compile this driver as a module, choose M here: the
1541 module will be called machzwd.
1543 config SBC_EPX_C3_WATCHDOG
1544 tristate "Winsystems SBC EPX-C3 watchdog"
1547 This is the driver for the built-in watchdog timer on the EPX-C3
1548 Single-board computer made by Winsystems, Inc.
1550 *Note*: This hardware watchdog is not probeable and thus there
1551 is no way to know if writing to its IO address will corrupt
1552 your system or have any real effect. The only way to be sure
1553 that this driver does what you want is to make sure you
1554 are running it on an EPX-C3 from Winsystems with the watchdog
1555 timer at IO address 0x1ee and 0x1ef. It will write to both those
1556 IO ports. Basically, the assumption is made that if you compile
1557 this driver into your kernel and/or load it as a module, that you
1558 know what you are doing and that you are in fact running on an
1561 To compile this driver as a module, choose M here: the
1562 module will be called sbc_epx_c3.
1564 config INTEL_MEI_WDT
1565 tristate "Intel MEI iAMT Watchdog"
1566 depends on INTEL_MEI && X86
1567 select WATCHDOG_CORE
1569 A device driver for the Intel MEI iAMT watchdog.
1571 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1572 Whenever the OS hangs or crashes, iAMT will send an event
1573 to any subscriber to this event. The watchdog doesn't reset the
1576 To compile this driver as a module, choose M here:
1577 the module will be called mei_wdt.
1580 tristate "NI 903x/913x Watchdog"
1581 depends on X86 && ACPI
1582 select WATCHDOG_CORE
1584 This is the driver for the watchdog timer on the National Instruments
1585 903x/913x real-time controllers.
1587 To compile this driver as a module, choose M here: the module will be
1591 tristate "NIC7018 Watchdog"
1592 depends on X86 && ACPI
1593 select WATCHDOG_CORE
1595 Support for National Instruments NIC7018 Watchdog.
1597 To compile this driver as a module, choose M here: the module will be
1602 config M54xx_WATCHDOG
1603 tristate "MCF54xx watchdog support"
1606 To compile this driver as a module, choose M here: the
1607 module will be called m54xx_wdt.
1609 # MicroBlaze Architecture
1614 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1615 depends on ATH79 || (ARM && COMPILE_TEST)
1617 Hardware driver for the built-in watchdog timer on the Atheros
1618 AR71XX/AR724X/AR913X SoCs.
1621 tristate "Broadcom BCM47xx Watchdog Timer"
1622 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1623 select WATCHDOG_CORE
1625 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1628 tristate "IDT RC32434 SoC Watchdog Timer"
1629 depends on MIKROTIK_RB532
1631 Hardware driver for the IDT RC32434 SoC built-in
1634 To compile this driver as a module, choose M here: the
1635 module will be called rc32434_wdt.
1638 tristate "Indy/I2 Hardware Watchdog"
1639 depends on SGI_HAS_INDYDOG
1641 Hardware driver for the Indy's/I2's watchdog. This is a
1642 watchdog timer that will reboot the machine after a 60 second
1643 timer expired and no process has written to /dev/watchdog during
1647 tristate "Ingenic jz4740 SoC hardware watchdog"
1648 depends on MACH_JZ4740 || MACH_JZ4780
1649 select WATCHDOG_CORE
1651 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1654 tristate "MTX-1 Hardware Watchdog"
1655 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1657 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1658 will reboot the machine after a 100 seconds timer expired.
1661 tristate "PNX833x Hardware Watchdog"
1662 depends on SOC_PNX8335
1665 Hardware driver for the PNX833x's watchdog. This is a
1666 watchdog timer that will reboot the machine after a programmable
1667 timer has expired and no process has written to /dev/watchdog during
1671 tristate "Sibyte SoC hardware watchdog"
1672 depends on CPU_SB1 || (MIPS && COMPILE_TEST)
1674 Watchdog driver for the built in watchdog hardware in Sibyte
1675 SoC processors. There are apparently two watchdog timers
1676 on such processors; this driver supports only the first one,
1677 because currently Linux only supports exporting one watchdog
1680 To compile this driver as a loadable module, choose M here.
1681 The module will be called sb_wdog.
1684 tristate "TI AR7 Watchdog Timer"
1685 depends on AR7 || (MIPS && 32BIT && COMPILE_TEST)
1687 Hardware driver for the TI AR7 Watchdog Timer.
1690 tristate "Toshiba TXx9 Watchdog Timer"
1691 depends on CPU_TX39XX || CPU_TX49XX || (MIPS && COMPILE_TEST)
1692 select WATCHDOG_CORE
1694 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1697 tristate "Cavium OCTEON SOC family Watchdog Timer"
1698 depends on CAVIUM_OCTEON_SOC
1700 select WATCHDOG_CORE
1701 select EXPORT_UASM if OCTEON_WDT = m
1703 Hardware driver for OCTEON's on chip watchdog timer.
1704 Enables the watchdog for all cores running Linux. It
1705 installs a NMI handler and pokes the watchdog based on an
1706 interrupt. On first expiration of the watchdog, the
1707 interrupt handler pokes it. The second expiration causes an
1708 NMI that prints a message. The third expiration causes a
1711 When userspace has /dev/watchdog open, no poking is done
1712 from the first interrupt, it is then only poked when the
1716 tristate "Broadcom BCM63xx hardware watchdog"
1719 Watchdog driver for the built in watchdog hardware in Broadcom
1722 To compile this driver as a loadable module, choose M here.
1723 The module will be called bcm63xx_wdt.
1726 tristate "Broadcom BCM2835 hardware watchdog"
1727 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1728 select WATCHDOG_CORE
1730 Watchdog driver for the built in watchdog hardware in Broadcom
1733 To compile this driver as a loadable module, choose M here.
1734 The module will be called bcm2835_wdt.
1737 tristate "BCM Kona Watchdog"
1738 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1739 select WATCHDOG_CORE
1741 Support for the watchdog timer on the following Broadcom BCM281xx
1742 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1745 Say 'Y' or 'M' here to enable the driver. The module will be called
1748 config BCM_KONA_WDT_DEBUG
1749 bool "DEBUGFS support for BCM Kona Watchdog"
1750 depends on BCM_KONA_WDT
1752 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1753 access to the driver's internal data structures as well as watchdog
1754 timer hardware registres.
1756 If in doubt, say 'N'.
1759 tristate "BCM7038 Watchdog"
1760 select WATCHDOG_CORE
1761 depends on HAS_IOMEM
1762 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
1764 Watchdog driver for the built-in hardware in Broadcom 7038 and
1765 later SoCs used in set-top boxes. BCM7038 was made public
1766 during the 2004 CES, and since then, many Broadcom chips use this
1767 watchdog block, including some cable modem chips.
1770 tristate "Imagination Technologies PDC Watchdog Timer"
1771 depends on HAS_IOMEM
1772 depends on MIPS || COMPILE_TEST
1773 select WATCHDOG_CORE
1775 Driver for Imagination Technologies PowerDown Controller
1778 To compile this driver as a loadable module, choose M here.
1779 The module will be called imgpdc_wdt.
1782 tristate "Lantiq SoC watchdog"
1784 select WATCHDOG_CORE
1786 Hardware driver for the Lantiq SoC Watchdog Timer.
1788 config LOONGSON1_WDT
1789 tristate "Loongson1 SoC hardware watchdog"
1790 depends on MACH_LOONGSON32
1791 select WATCHDOG_CORE
1793 Hardware driver for the Loongson1 SoC Watchdog Timer.
1796 tristate "Ralink SoC watchdog"
1797 select WATCHDOG_CORE
1800 Hardware driver for the Ralink SoC Watchdog Timer.
1803 tristate "Mediatek SoC watchdog"
1804 select WATCHDOG_CORE
1805 depends on SOC_MT7620 || SOC_MT7621
1807 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1810 tristate "Microchip PIC32 hardware watchdog"
1811 select WATCHDOG_CORE
1812 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1814 Watchdog driver for the built in watchdog hardware in a PIC32.
1816 Configuration bits must be set appropriately for the watchdog to be
1817 controlled by this driver.
1819 To compile this driver as a loadable module, choose M here.
1820 The module will be called pic32-wdt.
1823 tristate "Microchip PIC32 Deadman Timer"
1824 select WATCHDOG_CORE
1825 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1827 Watchdog driver for PIC32 instruction fetch counting timer. This specific
1828 timer is typically be used in misson critical and safety critical
1829 applications, where any single failure of the software functionality
1830 and sequencing must be detected.
1832 To compile this driver as a loadable module, choose M here.
1833 The module will be called pic32-dmt.
1835 # PARISC Architecture
1837 # POWERPC Architecture
1840 tristate "GE Watchdog Timer"
1843 Watchdog timer found in a number of GE single board computers.
1846 bool "MPC52xx Watchdog Timer"
1847 depends on PPC_MPC52xx || COMPILE_TEST
1849 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1852 tristate "MPC8xxx Platform Watchdog Timer"
1853 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1854 select WATCHDOG_CORE
1856 This driver is for a SoC level watchdog that exists on some
1857 Freescale PowerPC processors. So far this driver supports:
1862 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1865 tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
1866 depends on MV64X60 || COMPILE_TEST
1869 tristate "PIKA FPGA Watchdog"
1870 depends on WARP || (PPC64 && COMPILE_TEST)
1873 This enables the watchdog in the PIKA FPGA. Currently used on
1877 tristate "PowerPC Book-E Watchdog Timer"
1878 depends on BOOKE || 4xx
1879 select WATCHDOG_CORE
1881 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1882 MPC85xx SOCs and the IBM PowerPC 440.
1884 Please see Documentation/watchdog/watchdog-api.rst for
1887 config BOOKE_WDT_DEFAULT_TIMEOUT
1888 int "PowerPC Book-E Watchdog Timer Default Timeout"
1889 depends on BOOKE_WDT
1890 default 38 if PPC_FSL_BOOK3E
1891 range 0 63 if PPC_FSL_BOOK3E
1892 default 3 if !PPC_FSL_BOOK3E
1893 range 0 3 if !PPC_FSL_BOOK3E
1895 Select the default watchdog timer period to be used by the PowerPC
1896 Book-E watchdog driver. A watchdog "event" occurs when the bit
1897 position represented by this number transitions from zero to one.
1899 For Freescale Book-E processors, this is a number between 0 and 63.
1900 For other Book-E processors, this is a number between 0 and 3.
1902 The value can be overridden by the wdt_period command-line parameter.
1905 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1906 select WATCHDOG_CORE
1907 depends on GPIOLIB || COMPILE_TEST
1909 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1911 The driver can also be built as a module. If so, the module will be
1914 If unsure select N here.
1916 # PPC64 Architecture
1918 config WATCHDOG_RTAS
1919 tristate "RTAS watchdog"
1922 This driver adds watchdog support for the RTAS watchdog.
1924 To compile this driver as a module, choose M here. The module
1925 will be called wdrtas.
1929 config DIAG288_WATCHDOG
1930 tristate "System z diag288 Watchdog"
1932 select WATCHDOG_CORE
1934 IBM s/390 and zSeries machines running under z/VM 5.1 or later
1935 provide a virtual watchdog timer to their guest that cause a
1936 user define Control Program command to be executed after a
1938 LPAR provides a very similar interface. This driver handles
1941 To compile this driver as a module, choose M here. The module
1942 will be called diag288_wdt.
1944 # SUPERH (sh + sh64) Architecture
1947 tristate "SuperH Watchdog"
1948 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
1949 select WATCHDOG_CORE
1951 This driver adds watchdog support for the integrated watchdog in the
1952 SuperH processors. If you have one of these processors and wish
1953 to have watchdog support enabled, say Y, otherwise say N.
1955 As a side note, saying Y here will automatically boost HZ to 1000
1956 so that the timer has a chance to clear the overflow counter. On
1957 slower systems (such as the SH-2 and SH-3) this will likely yield
1958 some performance issues. As such, the WDT should be avoided here
1959 unless it is absolutely necessary.
1961 To compile this driver as a module, choose M here: the
1962 module will be called shwdt.
1964 # SPARC Architecture
1966 # SPARC64 Architecture
1968 config WATCHDOG_CP1XXX
1969 tristate "CP1XXX Hardware Watchdog support"
1970 depends on SPARC64 && PCI
1972 This is the driver for the hardware watchdog timers present on
1973 Sun Microsystems CompactPCI models CP1400 and CP1500.
1975 To compile this driver as a module, choose M here: the
1976 module will be called cpwatchdog.
1978 If you do not have a CompactPCI model CP1400 or CP1500, or
1979 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
1980 you should say N to this option.
1983 tristate "RIO Hardware Watchdog support"
1984 depends on SPARC64 && PCI
1986 Say Y here to support the hardware watchdog capability on Sun RIO
1987 machines. The watchdog timeout period is normally one minute but
1988 can be changed with a boot-time parameter.
1990 config WATCHDOG_SUN4V
1991 tristate "Sun4v Watchdog support"
1992 select WATCHDOG_CORE
1995 Say Y here to support the hypervisor watchdog capability embedded
1996 in the SPARC sun4v architecture.
1998 To compile this driver as a module, choose M here. The module will
1999 be called sun4v_wdt.
2001 # XTENSA Architecture
2006 tristate "Xen Watchdog support"
2008 select WATCHDOG_CORE
2010 Say Y here to support the hypervisor watchdog capability provided
2011 by Xen 4.0 and newer. The watchdog timeout period is normally one
2012 minute but can be changed with a boot-time parameter.
2015 tristate "UML watchdog"
2016 depends on UML || COMPILE_TEST
2019 # ISA-based Watchdog Cards
2022 comment "ISA-based Watchdog Cards"
2026 tristate "Berkshire Products ISA-PC Watchdog"
2029 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2030 This card simply watches your kernel to make sure it doesn't freeze,
2031 and if it does, it reboots your computer after a certain amount of
2032 time. This driver is like the WDT501 driver but for different
2033 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>. The PC
2034 watchdog cards can be ordered from <http://www.berkprod.com/>.
2036 To compile this driver as a module, choose M here: the
2037 module will be called pcwd.
2039 Most people will say N.
2042 tristate "Mixcom Watchdog"
2045 This is a driver for the Mixcom hardware watchdog cards. This
2046 watchdog simply watches your kernel to make sure it doesn't freeze,
2047 and if it does, it reboots your computer after a certain amount of
2050 To compile this driver as a module, choose M here: the
2051 module will be called mixcomwd.
2053 Most people will say N.
2056 tristate "WDT Watchdog timer"
2059 If you have a WDT500P or WDT501P watchdog board, say Y here,
2060 otherwise N. It is not possible to probe for this board, which means
2061 that you have to inform the kernel about the IO port and IRQ that
2062 is needed (you can do this via the io and irq parameters)
2064 To compile this driver as a module, choose M here: the
2065 module will be called wdt.
2068 # PCI-based Watchdog Cards
2071 comment "PCI-based Watchdog Cards"
2074 config PCIPCWATCHDOG
2075 tristate "Berkshire Products PCI-PC Watchdog"
2078 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2079 This card simply watches your kernel to make sure it doesn't freeze,
2080 and if it does, it reboots your computer after a certain amount of
2081 time. The card can also monitor the internal temperature of the PC.
2082 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2084 To compile this driver as a module, choose M here: the
2085 module will be called pcwd_pci.
2087 Most people will say N.
2090 tristate "PCI-WDT500/501 Watchdog timer"
2093 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2095 If you have a PCI-WDT501 watchdog board then you can enable the
2096 temperature sensor by setting the type parameter to 501.
2098 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2099 can do this via the tachometer parameter. Only do this if you have a
2100 fan tachometer actually set up.
2102 To compile this driver as a module, choose M here: the
2103 module will be called wdt_pci.
2106 # USB-based Watchdog Cards
2109 comment "USB-based Watchdog Cards"
2112 config USBPCWATCHDOG
2113 tristate "Berkshire Products USB-PC Watchdog"
2116 This is the driver for the Berkshire Products USB-PC Watchdog card.
2117 This card simply watches your kernel to make sure it doesn't freeze,
2118 and if it does, it reboots your computer after a certain amount of
2119 time. The card can also monitor the internal temperature of the PC.
2120 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2122 To compile this driver as a module, choose M here: the
2123 module will be called pcwd_usb.
2125 Most people will say N.