1 # SPDX-License-Identifier: GPL-2.0-only
4 # Watchdog device configuration
8 bool "Watchdog Timer Support"
10 If you say Y here (and to one of the following options) and create a
11 character special file /dev/watchdog with major number 10 and minor
12 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
13 subsequently opening the file and then failing to write to it for
14 longer than 1 minute will result in rebooting the machine. This
15 could be useful for a networked machine that needs to come back
16 on-line as fast as possible after a lock-up. There's both a watchdog
17 implementation entirely in software (which can sometimes fail to
18 reboot the machine) and a driver for hardware watchdog boards, which
19 are more robust and can also keep track of the temperature inside
20 your computer. For details, read
21 <file:Documentation/watchdog/watchdog-api.rst> in the kernel source.
23 The watchdog is usually used together with the watchdog daemon
24 which is available from
25 <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can
26 also monitor NFS connections and can reboot the machine when the process
34 tristate "WatchDog Timer Driver Core"
36 Say Y here if you want to use the new watchdog timer driver core.
37 This driver provides a framework for all watchdog timer drivers
38 and gives them the /dev/watchdog interface (and later also the
41 config WATCHDOG_NOWAYOUT
42 bool "Disable watchdog shutdown on close"
44 The default watchdog behaviour (which you get if you say N here) is
45 to stop the timer if the process managing it closes the file
46 /dev/watchdog. It's always remotely possible that this process might
47 get killed. If you say Y here, the watchdog cannot be stopped once
50 config WATCHDOG_HANDLE_BOOT_ENABLED
51 bool "Update boot-enabled watchdog until userspace takes over"
54 The default watchdog behaviour (which you get if you say Y here) is
55 to ping watchdog devices that were enabled before the driver has
56 been loaded until control is taken over from userspace using the
57 /dev/watchdog file. If you say N here, the kernel will not update
58 the watchdog on its own. Thus if your userspace does not start fast
59 enough your device will reboot.
61 config WATCHDOG_OPEN_TIMEOUT
62 int "Timeout value for opening watchdog device"
65 The maximum time, in seconds, for which the watchdog framework takes
66 care of pinging a hardware watchdog. A value of 0 means infinite. The
67 value set here can be overridden by the commandline parameter
68 "watchdog.open_timeout".
71 bool "Read different watchdog information through sysfs"
73 Say Y here if you want to enable watchdog device status read through
76 comment "Watchdog Pretimeout Governors"
78 config WATCHDOG_PRETIMEOUT_GOV
79 bool "Enable watchdog pretimeout governors"
80 depends on WATCHDOG_CORE
82 The option allows to select watchdog pretimeout governors.
84 config WATCHDOG_PRETIMEOUT_GOV_SEL
86 depends on WATCHDOG_PRETIMEOUT_GOV
88 select WATCHDOG_PRETIMEOUT_GOV_PANIC if WATCHDOG_PRETIMEOUT_GOV_NOOP=n
90 if WATCHDOG_PRETIMEOUT_GOV
92 config WATCHDOG_PRETIMEOUT_GOV_NOOP
93 tristate "Noop watchdog pretimeout governor"
94 depends on WATCHDOG_CORE
97 Noop watchdog pretimeout governor, only an informational
98 message is added to kernel log buffer.
100 config WATCHDOG_PRETIMEOUT_GOV_PANIC
101 tristate "Panic watchdog pretimeout governor"
102 depends on WATCHDOG_CORE
103 default WATCHDOG_CORE
105 Panic watchdog pretimeout governor, on watchdog pretimeout
106 event put the kernel into panic.
109 prompt "Default Watchdog Pretimeout Governor"
110 default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
112 This option selects a default watchdog pretimeout governor.
113 The governor takes its action, if a watchdog is capable
114 to report a pretimeout event.
116 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP
118 depends on WATCHDOG_PRETIMEOUT_GOV_NOOP
120 Use noop watchdog pretimeout governor by default. If noop
121 governor is selected by a user, write a short message to
122 the kernel log buffer and don't do any system changes.
124 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
126 depends on WATCHDOG_PRETIMEOUT_GOV_PANIC
128 Use panic watchdog pretimeout governor by default, if
129 a watchdog pretimeout event happens, consider that
130 a watchdog feeder is dead and reboot is unavoidable.
134 endif # WATCHDOG_PRETIMEOUT_GOV
137 # General Watchdog drivers
140 comment "Watchdog Device Drivers"
142 # Architecture Independent
145 tristate "Software watchdog"
148 A software monitoring watchdog. This will fail to reboot your system
149 from some situations that the hardware watchdog will recover
150 from. Equally it's a lot cheaper to install.
152 To compile this driver as a module, choose M here: the
153 module will be called softdog.
155 config SOFT_WATCHDOG_PRETIMEOUT
156 bool "Software watchdog pretimeout governor support"
157 depends on SOFT_WATCHDOG && WATCHDOG_PRETIMEOUT_GOV
159 Enable this if you want to use pretimeout governors with the software
160 watchdog. Be aware that governors might affect the watchdog because it
161 is purely software, e.g. the panic governor will stall it!
163 config BD70528_WATCHDOG
164 tristate "ROHM BD70528 PMIC Watchdog"
165 depends on MFD_ROHM_BD70528
168 Support for the watchdog in the ROHM BD70528 PMIC. Watchdog trigger
171 Say Y here to include support for the ROHM BD70528 watchdog.
172 Alternatively say M to compile the driver as a module,
173 which will be called bd70528_wdt.
175 config DA9052_WATCHDOG
176 tristate "Dialog DA9052 Watchdog"
177 depends on PMIC_DA9052 || COMPILE_TEST
180 Support for the watchdog in the DA9052 PMIC. Watchdog trigger
183 Say Y here to include support for the DA9052 watchdog.
184 Alternatively say M to compile the driver as a module,
185 which will be called da9052_wdt.
187 config DA9055_WATCHDOG
188 tristate "Dialog Semiconductor DA9055 Watchdog"
189 depends on MFD_DA9055 || COMPILE_TEST
192 If you say yes here you get support for watchdog on the Dialog
193 Semiconductor DA9055 PMIC.
195 This driver can also be built as a module. If so, the module
196 will be called da9055_wdt.
198 config DA9063_WATCHDOG
199 tristate "Dialog DA9063 Watchdog"
200 depends on MFD_DA9063 || COMPILE_TEST
203 Support for the watchdog in the DA9063 PMIC.
205 This driver can be built as a module. The module name is da9063_wdt.
207 config DA9062_WATCHDOG
208 tristate "Dialog DA9062/61 Watchdog"
209 depends on MFD_DA9062 || COMPILE_TEST
213 Support for the watchdog in the DA9062 and DA9061 PMICs.
215 This driver can be built as a module. The module name is da9062_wdt.
218 tristate "Watchdog device controlled through GPIO-line"
222 If you say yes here you get support for watchdog device
223 controlled through GPIO-line.
225 config GPIO_WATCHDOG_ARCH_INITCALL
226 bool "Register the watchdog as early as possible"
227 depends on GPIO_WATCHDOG=y
229 In some situations, the default initcall level (module_init)
230 in not early enough in the boot process to avoid the watchdog
232 If you say yes here, the initcall level would be raised to
236 config MENF21BMC_WATCHDOG
237 tristate "MEN 14F021P00 BMC Watchdog"
238 depends on MFD_MENF21BMC || COMPILE_TEST
242 Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
244 This driver can also be built as a module. If so the module
245 will be called menf21bmc_wdt.
247 config MENZ069_WATCHDOG
248 tristate "MEN 16Z069 Watchdog"
252 Say Y here to include support for the MEN 16Z069 Watchdog.
254 This driver can also be built as a module. If so the module
255 will be called menz069_wdt.
257 config TANGOX_WATCHDOG
258 tristate "Sigma Designs SMP86xx/SMP87xx watchdog"
260 depends on ARCH_TANGO || COMPILE_TEST
263 Support for the watchdog in Sigma Designs SMP86xx (tango3)
264 and SMP87xx (tango4) family chips.
266 This driver can be built as a module. The module name is tangox_wdt.
269 tristate "ACPI Watchdog Action Table (WDAT)"
274 This driver adds support for systems with ACPI Watchdog Action
275 Table (WDAT) table. Servers typically have this but it can be
276 found on some desktop machines as well. This driver will take
277 over the native iTCO watchdog driver found on many Intel CPUs.
279 To compile this driver as module, choose M here: the module will
282 config WM831X_WATCHDOG
283 tristate "WM831x watchdog"
284 depends on MFD_WM831X
287 Support for the watchdog in the WM831x AudioPlus PMICs. When
288 the watchdog triggers the system will be reset.
290 config WM8350_WATCHDOG
291 tristate "WM8350 watchdog"
292 depends on MFD_WM8350
295 Support for the watchdog in the WM8350 AudioPlus PMIC. When
296 the watchdog triggers the system will be reset.
298 config XILINX_WATCHDOG
299 tristate "Xilinx Watchdog timer"
303 Watchdog driver for the xps_timebase_wdt ip core.
305 To compile this driver as a module, choose M here: the
306 module will be called of_xilinx_wdt.
308 config ZIIRAVE_WATCHDOG
309 tristate "Zodiac RAVE Watchdog Timer"
313 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
316 To compile this driver as a module, choose M here: the
317 module will be called ziirave_wdt.
319 config RAVE_SP_WATCHDOG
320 tristate "RAVE SP Watchdog timer"
321 depends on RAVE_SP_CORE
322 depends on NVMEM || !NVMEM
325 Support for the watchdog on RAVE SP device.
328 tristate "Mellanox Watchdog"
329 depends on MELLANOX_PLATFORM
333 This is the driver for the hardware watchdog on Mellanox systems.
334 If you are going to use it, say Y here, otherwise N.
335 This driver can be used together with the watchdog daemon.
336 It can also watch your kernel to make sure it doesn't freeze,
337 and if it does, it reboots your system after a certain amount of
340 To compile this driver as a module, choose M here: the
341 module will be called mlx-wdt.
343 config SL28CPLD_WATCHDOG
344 tristate "Kontron sl28cpld Watchdog"
345 depends on MFD_SL28CPLD || COMPILE_TEST
348 Say Y here to include support for the watchdog timer
349 on the Kontron sl28 CPLD.
351 To compile this driver as a module, choose M here: the
352 module will be called sl28cpld_wdt.
358 config ARM_SP805_WATCHDOG
359 tristate "ARM SP805 Watchdog"
360 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
363 ARM Primecell SP805 Watchdog timer. This will reboot your system when
364 the timeout is reached.
366 config ARM_SBSA_WATCHDOG
367 tristate "ARM SBSA Generic Watchdog"
369 depends on ARM_ARCH_TIMER
372 ARM SBSA Generic Watchdog has two stage timeouts:
373 the first signal (WS0) is for alerting the system by interrupt,
374 the second one (WS1) is a real hardware reset.
375 More details: ARM DEN0029B - Server Base System Architecture (SBSA)
377 This driver can operate ARM SBSA Generic Watchdog as a single stage
378 or a two stages watchdog, it depends on the module parameter "action".
380 Note: the maximum timeout in the two stages mode is half of that in
381 the single stage mode.
383 To compile this driver as module, choose M here: The module
384 will be called sbsa_gwdt.
386 config ARMADA_37XX_WATCHDOG
387 tristate "Armada 37xx watchdog"
388 depends on ARCH_MVEBU || COMPILE_TEST
392 Say Y here to include support for the watchdog timer found on
393 Marvell Armada 37xx SoCs.
394 To compile this driver as a module, choose M here: the
395 module will be called armada_37xx_wdt.
397 config ASM9260_WATCHDOG
398 tristate "Alphascale ASM9260 watchdog"
399 depends on MACH_ASM9260 || COMPILE_TEST
402 select RESET_CONTROLLER
404 Watchdog timer embedded into Alphascale asm9260 chips. This will reboot your
405 system when the timeout is reached.
407 config AT91RM9200_WATCHDOG
408 tristate "AT91RM9200 watchdog"
409 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
411 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
412 system when the timeout is reached.
414 config AT91SAM9X_WATCHDOG
415 tristate "AT91SAM9X / AT91CAP9 watchdog"
416 depends on ARCH_AT91 || COMPILE_TEST
419 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
420 reboot your system when the timeout is reached.
422 config SAMA5D4_WATCHDOG
423 tristate "Atmel SAMA5D4 Watchdog Timer"
424 depends on ARCH_AT91 || COMPILE_TEST
427 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
428 Its Watchdog Timer Mode Register can be written more than once.
429 This will reboot your system when the timeout is reached.
431 config CADENCE_WATCHDOG
432 tristate "Cadence Watchdog Timer"
436 Say Y here if you want to include support for the watchdog
437 timer in the Xilinx Zynq.
439 config 21285_WATCHDOG
440 tristate "DC21285 watchdog"
441 depends on FOOTBRIDGE
443 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
444 here if you wish to use this. Alternatively say M to compile the
445 driver as a module, which will be called wdt285.
447 This driver does not work on all machines. In particular, early CATS
448 boards have hardware problems that will cause the machine to simply
449 lock up if the watchdog fires.
451 "If in doubt, leave it out" - say N.
454 tristate "NetWinder WB83C977 watchdog"
455 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
457 Say Y here to include support for the WB977 watchdog included in
458 NetWinder machines. Alternatively say M to compile the driver as
459 a module, which will be called wdt977.
461 Not sure? It's safe to say N.
463 config FTWDT010_WATCHDOG
464 tristate "Faraday Technology FTWDT010 watchdog"
465 depends on ARM || COMPILE_TEST
469 Say Y here if to include support for the Faraday Technology
470 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
473 To compile this driver as a module, choose M here: the
474 module will be called ftwdt010_wdt.
476 config IXP4XX_WATCHDOG
477 tristate "IXP4xx Watchdog"
478 depends on ARCH_IXP4XX
480 Say Y here if to include support for the watchdog timer
481 in the Intel IXP4xx network processors. This driver can
482 be built as a module by choosing M. The module will
483 be called ixp4xx_wdt.
485 Note: The internal IXP4xx watchdog does a soft CPU reset
486 which doesn't reset any peripherals. There are circumstances
487 where the watchdog will fail to reset the board correctly
488 (e.g., if the boot ROM is in an unreadable state).
490 Say N if you are unsure.
492 config HAVE_S3C2410_WATCHDOG
495 This will include watchdog timer support for Samsung SoCs. If
496 you want to include watchdog support for any machine, kindly
497 select this in the respective mach-XXXX/Kconfig file.
499 config S3C2410_WATCHDOG
500 tristate "S3C2410 Watchdog"
501 depends on HAVE_S3C2410_WATCHDOG || COMPILE_TEST
503 select MFD_SYSCON if ARCH_EXYNOS
505 Watchdog timer block in the Samsung SoCs. This will reboot
506 the system when the timer expires with the watchdog enabled.
508 The driver is limited by the speed of the system's PCLK
509 signal, so with reasonably fast systems (PCLK around 50-66MHz)
510 then watchdog intervals of over approximately 20seconds are
513 The driver can be built as a module by choosing M, and will
514 be called s3c2410_wdt
516 config SA1100_WATCHDOG
517 tristate "SA1100/PXA2xx watchdog"
518 depends on ARCH_SA1100 || ARCH_PXA
520 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
521 reboot your system when timeout is reached.
523 NOTE: once enabled, this timer cannot be disabled.
525 To compile this driver as a module, choose M here: the
526 module will be called sa1100_wdt.
529 tristate "Synopsys DesignWare watchdog"
533 Say Y here if to include support for the Synopsys DesignWare
534 watchdog timer found in many chips.
535 To compile this driver as a module, choose M here: the
536 module will be called dw_wdt.
538 config EP93XX_WATCHDOG
539 tristate "EP93xx Watchdog"
540 depends on ARCH_EP93XX || COMPILE_TEST
543 Say Y here if to include support for the watchdog timer
544 embedded in the Cirrus Logic EP93xx family of devices.
546 To compile this driver as a module, choose M here: the
547 module will be called ep93xx_wdt.
550 tristate "OMAP Watchdog"
551 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
554 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog. Say 'Y'
555 here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
557 config PNX4008_WATCHDOG
558 tristate "LPC32XX Watchdog"
559 depends on ARCH_LPC32XX || COMPILE_TEST
562 Say Y here if to include support for the watchdog timer
563 in the LPC32XX processor.
564 This driver can be built as a module by choosing M. The module
565 will be called pnx4008_wdt.
567 Say N if you are unsure.
570 tristate "IOP Watchdog"
571 depends on ARCH_IOP13XX
572 select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X)
574 Say Y here if to include support for the watchdog timer
575 in the Intel IOP3XX & IOP13XX I/O Processors. This driver can
576 be built as a module by choosing M. The module will
579 Note: The IOP13XX watchdog does an Internal Bus Reset which will
580 affect both cores and the peripherals of the IOP. The ATU-X
581 and/or ATUe configuration registers will remain intact, but if
582 operating as an Root Complex and/or Central Resource, the PCI-X
583 and/or PCIe busses will also be reset. THIS IS A VERY BIG HAMMER.
585 config DAVINCI_WATCHDOG
586 tristate "DaVinci watchdog"
587 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
590 Say Y here if to include support for the watchdog timer
591 in the DaVinci DM644x/DM646x or Keystone processors.
592 To compile this driver as a module, choose M here: the
593 module will be called davinci_wdt.
595 NOTE: once enabled, this timer cannot be disabled.
596 Say N if you are unsure.
598 config K3_RTI_WATCHDOG
599 tristate "Texas Instruments K3 RTI watchdog"
600 depends on ARCH_K3 || COMPILE_TEST
603 Say Y here if you want to include support for the K3 watchdog
604 timer (RTI module) available in the K3 generation of processors.
606 config ORION_WATCHDOG
607 tristate "Orion watchdog"
608 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || (COMPILE_TEST && !ARCH_EBSA110)
612 Say Y here if to include support for the watchdog timer
613 in the Marvell Orion5x and Kirkwood ARM SoCs.
614 To compile this driver as a module, choose M here: the
615 module will be called orion_wdt.
617 config RN5T618_WATCHDOG
618 tristate "Ricoh RN5T618 watchdog"
619 depends on MFD_RN5T618 || COMPILE_TEST
622 If you say yes here you get support for watchdog on the Ricoh
625 This driver can also be built as a module. If so, the module
626 will be called rn5t618_wdt.
628 config SUNXI_WATCHDOG
629 tristate "Allwinner SoCs watchdog support"
630 depends on ARCH_SUNXI || COMPILE_TEST
633 Say Y here to include support for the watchdog timer
635 To compile this driver as a module, choose M here: the
636 module will be called sunxi_wdt.
638 config COH901327_WATCHDOG
639 bool "ST-Ericsson COH 901 327 watchdog"
640 depends on ARCH_U300 || (ARM && COMPILE_TEST)
641 default y if MACH_U300
644 Say Y here to include Watchdog timer support for the
645 watchdog embedded into the ST-Ericsson U300 series platforms.
646 This watchdog is used to reset the system and thus cannot be
647 compiled as a module.
649 config NPCM7XX_WATCHDOG
650 tristate "Nuvoton NPCM750 watchdog"
651 depends on ARCH_NPCM || COMPILE_TEST
652 default y if ARCH_NPCM7XX
655 Say Y here to include Watchdog timer support for the
656 watchdog embedded into the NPCM7xx.
657 This watchdog is used to reset the system and thus cannot be
658 compiled as a module.
660 config TWL4030_WATCHDOG
661 tristate "TWL4030 Watchdog"
662 depends on TWL4030_CORE
665 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
666 watchdog timer support for TWL4030 chips.
668 config STMP3XXX_RTC_WATCHDOG
669 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
670 depends on RTC_DRV_STMP || COMPILE_TEST
673 Say Y here to include support for the watchdog timer inside
674 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
675 To compile this driver as a module, choose M here: the
676 module will be called stmp3xxx_rtc_wdt.
678 config TS4800_WATCHDOG
679 tristate "TS-4800 Watchdog"
680 depends on HAS_IOMEM && OF
681 depends on SOC_IMX51 || COMPILE_TEST
685 Technologic Systems TS-4800 has watchdog timer implemented in
686 an external FPGA. Say Y here if you want to support for the
687 watchdog timer on TS-4800 board.
689 config TS72XX_WATCHDOG
690 tristate "TS-72XX SBC Watchdog"
691 depends on MACH_TS72XX || COMPILE_TEST
694 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
695 watchdog timer implemented in a external CPLD chip. Say Y here
696 if you want to support for the watchdog timer on TS-72XX boards.
698 To compile this driver as a module, choose M here: the
699 module will be called ts72xx_wdt.
701 config MAX63XX_WATCHDOG
702 tristate "Max63xx watchdog"
706 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
708 config MAX77620_WATCHDOG
709 tristate "Maxim Max77620 Watchdog Timer"
710 depends on MFD_MAX77620 || COMPILE_TEST
713 This is the driver for the Max77620 watchdog timer.
714 Say 'Y' here to enable the watchdog timer support for
715 MAX77620 chips. To compile this driver as a module,
716 choose M here: the module will be called max77620_wdt.
719 tristate "IMX2+ Watchdog"
720 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
724 This is the driver for the hardware watchdog
725 on the Freescale IMX2 and later processors.
726 If you have one of these processors and wish to have
727 watchdog support enabled, say Y, otherwise say N.
729 To compile this driver as a module, choose M here: the
730 module will be called imx2_wdt.
733 tristate "IMX SC Watchdog"
734 depends on HAVE_ARM_SMCCC
738 This is the driver for the system controller watchdog
739 on the NXP i.MX SoCs with system controller inside, the
740 watchdog driver will call ARM SMC API and trap into
741 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
742 will request system controller to execute the operations.
743 If you have one of these processors and wish to have
744 watchdog support enabled, say Y, otherwise say N.
746 To compile this driver as a module, choose M here: the
747 module will be called imx_sc_wdt.
750 tristate "IMX7ULP Watchdog"
751 depends on ARCH_MXC || COMPILE_TEST
754 This is the driver for the hardware watchdog on the Freescale
755 IMX7ULP and later processors. If you have one of these
756 processors and wish to have watchdog support enabled,
757 say Y, otherwise say N.
759 To compile this driver as a module, choose M here: the
760 module will be called imx7ulp_wdt.
762 config UX500_WATCHDOG
763 tristate "ST-Ericsson Ux500 watchdog"
764 depends on MFD_DB8500_PRCMU
768 Say Y here to include Watchdog timer support for the watchdog
769 existing in the prcmu of ST-Ericsson Ux500 series platforms.
771 To compile this driver as a module, choose M here: the
772 module will be called ux500_wdt.
775 tristate "Retu watchdog"
779 Retu watchdog driver for Nokia Internet Tablets (770, N800,
780 N810). At least on N800 the watchdog cannot be disabled, so
781 this driver is essential and you should enable it.
783 To compile this driver as a module, choose M here: the
784 module will be called retu_wdt.
787 tristate "MOXART watchdog"
788 depends on ARCH_MOXART || COMPILE_TEST
790 Say Y here to include Watchdog timer support for the watchdog
791 existing on the MOXA ART SoC series platforms.
793 To compile this driver as a module, choose M here: the
794 module will be called moxart_wdt.
796 config SIRFSOC_WATCHDOG
797 tristate "SiRFSOC watchdog"
798 depends on ARCH_SIRF || COMPILE_TEST
802 Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When
803 the watchdog triggers the system will be reset.
805 config ST_LPC_WATCHDOG
806 tristate "STMicroelectronics LPC Watchdog"
807 depends on ARCH_STI || COMPILE_TEST
811 Say Y here to include STMicroelectronics Low Power Controller
812 (LPC) based Watchdog timer support.
814 To compile this driver as a module, choose M here: the
815 module will be called st_lpc_wdt.
817 config TEGRA_WATCHDOG
818 tristate "Tegra watchdog"
819 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
822 Say Y here to include support for the watchdog timer
823 embedded in NVIDIA Tegra SoCs.
825 To compile this driver as a module, choose M here: the
826 module will be called tegra_wdt.
829 tristate "QCOM watchdog"
831 depends on ARCH_QCOM || COMPILE_TEST
834 Say Y here to include Watchdog timer support for the watchdog found
835 on QCOM chipsets. Currently supported targets are the MSM8960,
836 APQ8064, and IPQ8064.
838 To compile this driver as a module, choose M here: the
839 module will be called qcom_wdt.
841 config MESON_GXBB_WATCHDOG
842 tristate "Amlogic Meson GXBB SoCs watchdog support"
843 depends on ARCH_MESON || COMPILE_TEST
846 Say Y here to include support for the watchdog timer
847 in Amlogic Meson GXBB SoCs.
848 To compile this driver as a module, choose M here: the
849 module will be called meson_gxbb_wdt.
851 config MESON_WATCHDOG
852 tristate "Amlogic Meson SoCs watchdog support"
853 depends on ARCH_MESON || COMPILE_TEST
856 Say Y here to include support for the watchdog timer
857 in Amlogic Meson SoCs.
858 To compile this driver as a module, choose M here: the
859 module will be called meson_wdt.
861 config MEDIATEK_WATCHDOG
862 tristate "Mediatek SoCs watchdog support"
863 depends on ARCH_MEDIATEK || COMPILE_TEST
865 select RESET_CONTROLLER
867 Say Y here to include support for the watchdog timer
869 To compile this driver as a module, choose M here: the
870 module will be called mtk_wdt.
872 config DIGICOLOR_WATCHDOG
873 tristate "Conexant Digicolor SoCs watchdog support"
874 depends on ARCH_DIGICOLOR || COMPILE_TEST
877 Say Y here to include support for the watchdog timer
878 in Conexant Digicolor SoCs.
879 To compile this driver as a module, choose M here: the
880 module will be called digicolor_wdt.
882 config ARM_SMC_WATCHDOG
883 tristate "ARM Secure Monitor Call based watchdog support"
884 depends on ARM || ARM64
886 depends on HAVE_ARM_SMCCC
889 Say Y here to include support for a watchdog timer
890 implemented by the EL3 Secure Monitor on ARM platforms.
891 Requires firmware support.
892 To compile this driver as a module, choose M here: the
893 module will be called arm_smc_wdt.
895 config LPC18XX_WATCHDOG
896 tristate "LPC18xx/43xx Watchdog"
897 depends on ARCH_LPC18XX || COMPILE_TEST
901 Say Y here if to include support for the watchdog timer
902 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
904 To compile this driver as a module, choose M here: the
905 module will be called lpc18xx_wdt.
907 config ATLAS7_WATCHDOG
908 tristate "CSRatlas7 watchdog"
909 depends on ARCH_ATLAS7 || COMPILE_TEST
911 Say Y here to include Watchdog timer support for the watchdog
912 existing on the CSRatlas7 series platforms.
914 To compile this driver as a module, choose M here: the
915 module will be called atlas7_wdt.
918 tristate "Renesas WDT Watchdog"
919 depends on ARCH_RENESAS || COMPILE_TEST
922 This driver adds watchdog support for the integrated watchdogs in the
923 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
925 config RENESAS_RZAWDT
926 tristate "Renesas RZ/A WDT Watchdog"
927 depends on ARCH_RENESAS || COMPILE_TEST
930 This driver adds watchdog support for the integrated watchdogs in the
931 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
933 config ASPEED_WATCHDOG
934 tristate "Aspeed BMC watchdog support"
935 depends on ARCH_ASPEED || COMPILE_TEST
938 Say Y here to include support for the watchdog timer
941 This driver is required to reboot the SoC.
943 To compile this driver as a module, choose M here: the
944 module will be called aspeed_wdt.
946 config ZX2967_WATCHDOG
947 tristate "ZTE zx2967 SoCs watchdog support"
951 Say Y here to include support for the watchdog timer
953 To compile this driver as a module, choose M here: the
954 module will be called zx2967_wdt.
956 config STM32_WATCHDOG
957 tristate "STM32 Independent WatchDoG (IWDG) support"
958 depends on ARCH_STM32
962 Say Y here to include support for the watchdog timer
965 To compile this driver as a module, choose M here: the
966 module will be called stm32_iwdg.
968 config STPMIC1_WATCHDOG
969 tristate "STPMIC1 PMIC watchdog support"
970 depends on MFD_STPMIC1
973 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
974 If the watchdog timer expires, stpmic1 will shut down all its power
977 To compile this driver as a module, choose M here: the
978 module will be called spmic1_wdt.
980 config UNIPHIER_WATCHDOG
981 tristate "UniPhier watchdog support"
982 depends on ARCH_UNIPHIER || COMPILE_TEST
983 depends on OF && MFD_SYSCON
986 Say Y here to include support watchdog timer embedded
987 into the UniPhier system.
989 To compile this driver as a module, choose M here: the
990 module will be called uniphier_wdt.
992 config RTD119X_WATCHDOG
993 bool "Realtek RTD119x/RTD129x watchdog support"
994 depends on ARCH_REALTEK || COMPILE_TEST
999 Say Y here to include support for the watchdog timer in
1000 Realtek RTD1295 SoCs.
1002 config SPRD_WATCHDOG
1003 tristate "Spreadtrum watchdog support"
1004 depends on ARCH_SPRD || COMPILE_TEST
1005 select WATCHDOG_CORE
1007 Say Y here to include watchdog timer supported
1008 by Spreadtrum system.
1010 config PM8916_WATCHDOG
1011 tristate "QCOM PM8916 pmic watchdog"
1012 depends on OF && MFD_SPMI_PMIC
1013 select WATCHDOG_CORE
1015 Say Y here to include support watchdog timer embedded into the
1018 # X86 (i386 + ia64 + x86_64) Architecture
1021 tristate "Acquire SBC Watchdog Timer"
1024 This is the driver for the hardware watchdog on Single Board
1025 Computers produced by Acquire Inc (and others). This watchdog
1026 simply watches your kernel to make sure it doesn't freeze, and if
1027 it does, it reboots your computer after a certain amount of time.
1029 To compile this driver as a module, choose M here: the
1030 module will be called acquirewdt.
1032 Most people will say N.
1034 config ADVANTECH_WDT
1035 tristate "Advantech SBC Watchdog Timer"
1038 If you are configuring a Linux kernel for the Advantech single-board
1039 computer, say `Y' here to support its built-in watchdog timer
1040 feature. More information can be found at
1041 <https://www.advantech.com.tw/products/>
1044 tristate "ALi M1535 PMU Watchdog Timer"
1045 depends on X86 && PCI
1047 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1049 To compile this driver as a module, choose M here: the
1050 module will be called alim1535_wdt.
1052 Most people will say N.
1055 tristate "ALi M7101 PMU Computer Watchdog"
1058 This is the driver for the hardware watchdog on the ALi M7101 PMU
1059 as used in the x86 Cobalt servers and also found in some
1060 SPARC Netra servers too.
1062 To compile this driver as a module, choose M here: the
1063 module will be called alim7101_wdt.
1065 Most people will say N.
1068 tristate "WinSystems EBC-C384 Watchdog Timer"
1071 select WATCHDOG_CORE
1073 Enables watchdog timer support for the watchdog timer on the
1074 WinSystems EBC-C384 motherboard. The timeout may be configured via
1075 the timeout module parameter.
1078 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1081 This is the driver for the hardware watchdog on the Fintek F71808E,
1082 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1083 F81866 Super I/O controllers.
1085 You can compile this driver directly into the kernel, or use
1086 it as a module. The module will be called f71808e_wdt.
1089 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1090 depends on X86 && PCI
1091 select WATCHDOG_CORE
1093 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1094 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1095 the machine after its expiration. The expiration time can be
1096 configured with the "heartbeat" parameter.
1098 To compile this driver as a module, choose M here: the
1099 module will be called sp5100_tco.
1102 tristate "AMD Geode CS5535/CS5536 Watchdog"
1103 depends on CS5535_MFGPT
1105 This driver enables a watchdog capability built into the
1106 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1107 processors. This watchdog watches your kernel to make sure
1108 it doesn't freeze, and if it does, it reboots your computer after
1109 a certain amount of time.
1111 You can compile this driver directly into the kernel, or use
1112 it as a module. The module will be called geodewdt.
1115 tristate "AMD Elan SC520 processor Watchdog"
1116 depends on MELAN || COMPILE_TEST
1118 This is the driver for the hardware watchdog built in to the
1119 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1120 This watchdog simply watches your kernel to make sure it doesn't
1121 freeze, and if it does, it reboots your computer after a certain
1124 You can compile this driver directly into the kernel, or use
1125 it as a module. The module will be called sc520_wdt.
1127 config SBC_FITPC2_WATCHDOG
1128 tristate "Compulab SBC-FITPC2 watchdog"
1131 This is the driver for the built-in watchdog timer on the fit-PC2,
1132 fit-PC2i, CM-iAM single-board computers made by Compulab.
1134 It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux.
1135 When "Watchdog Timer Value" enabled one can set 31-255 s operational range.
1137 Entering BIOS setup temporary disables watchdog operation regardless to current state,
1138 so system will not be restarted while user in BIOS setup.
1140 Once watchdog was enabled the system will be restarted every
1141 "Watchdog Timer Value" period, so to prevent it user can restart or
1142 disable the watchdog.
1144 To compile this driver as a module, choose M here: the
1145 module will be called sbc_fitpc2_wdt.
1147 Most people will say N.
1150 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1153 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1154 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1155 information are at <http://www.eurotech.it/>.
1158 tristate "IB700 SBC Watchdog Timer"
1161 This is the driver for the hardware watchdog on the IB700 Single
1162 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
1163 simply watches your kernel to make sure it doesn't freeze, and if
1164 it does, it reboots your computer after a certain amount of time.
1166 This driver is like the WDT501 driver but for slightly different hardware.
1168 To compile this driver as a module, choose M here: the
1169 module will be called ib700wdt.
1171 Most people will say N.
1174 tristate "IBM Automatic Server Restart"
1177 This is the driver for the IBM Automatic Server Restart watchdog
1178 timer built-in into some eServer xSeries machines.
1180 To compile this driver as a module, choose M here: the
1181 module will be called ibmasr.
1184 tristate "ICP Single Board Computer Watchdog Timer"
1187 This is a driver for the hardware watchdog on the ICP Single
1188 Board Computer. This driver is working on (at least) the following
1189 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1191 To compile this driver as a module, choose M here: the
1192 module will be called wafer5823wdt.
1195 tristate "Intel 6300ESB Timer/Watchdog"
1197 select WATCHDOG_CORE
1199 Hardware driver for the watchdog timer built into the Intel
1200 6300ESB controller hub.
1202 To compile this driver as a module, choose M here: the
1203 module will be called i6300esb.
1206 tristate "Intel Atom E6xx Watchdog"
1207 depends on X86 && PCI
1208 select WATCHDOG_CORE
1212 Hardware driver for the watchdog timer built into the Intel
1213 Atom E6XX (TunnelCreek) processor.
1215 To compile this driver as a module, choose M here: the
1216 module will be called ie6xx_wdt.
1218 config INTEL_SCU_WATCHDOG
1219 bool "Intel SCU Watchdog for Mobile Platforms"
1220 depends on X86_INTEL_MID
1222 Hardware driver for the watchdog time built into the Intel SCU
1223 for Intel Mobile Platforms.
1225 To compile this driver as a module, choose M here.
1227 config INTEL_MID_WATCHDOG
1228 tristate "Intel MID Watchdog Timer"
1229 depends on X86_INTEL_MID
1230 select WATCHDOG_CORE
1232 Watchdog timer driver built into the Intel SCU for Intel MID
1235 This driver currently supports only the watchdog evolution
1236 implementation in SCU, available for Merrifield generation.
1238 To compile this driver as a module, choose M here.
1241 tristate "Intel TCO Timer/Watchdog"
1242 depends on (X86 || IA64) && PCI
1243 select WATCHDOG_CORE
1244 depends on I2C || I2C=n
1245 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1246 select LPC_ICH if !EXPERT
1247 select I2C_I801 if !EXPERT && I2C
1249 Hardware driver for the intel TCO timer based watchdog devices.
1250 These drivers are included in the Intel 82801 I/O Controller
1251 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1254 The TCO (Total Cost of Ownership) timer is a watchdog timer
1255 that will reboot the machine after its second expiration. The
1256 expiration time can be configured with the "heartbeat" parameter.
1258 On some motherboards the driver may fail to reset the chipset's
1259 NO_REBOOT flag which prevents the watchdog from rebooting the
1260 machine. If this is the case you will get a kernel message like
1261 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1263 To compile this driver as a module, choose M here: the
1264 module will be called iTCO_wdt.
1266 config ITCO_VENDOR_SUPPORT
1267 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1270 Add vendor specific support to the intel TCO timer based watchdog
1271 devices. At this moment we only have additional support for some
1272 SuperMicro Inc. motherboards.
1275 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1278 This is the driver for the built-in watchdog timer on the IT8712F
1279 Super I/0 chipset used on many motherboards.
1281 If the driver does not work, then make sure that the game port in
1282 the BIOS is enabled.
1284 To compile this driver as a module, choose M here: the
1285 module will be called it8712f_wdt.
1288 tristate "IT87 Watchdog Timer"
1290 select WATCHDOG_CORE
1292 This is the driver for the hardware watchdog on the ITE IT8607,
1293 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1294 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1295 IT8783 Super I/O chips.
1297 This watchdog simply watches your kernel to make sure it doesn't
1298 freeze, and if it does, it reboots your computer after a certain
1301 To compile this driver as a module, choose M here: the module will
1305 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1306 select WATCHDOG_CORE
1307 depends on X86 && PCI
1309 A software monitoring watchdog and NMI handling driver. This driver
1310 will detect lockups and provide a stack trace. This is a driver that
1311 will only load on an HP ProLiant system with a minimum of iLO2 support.
1312 To compile this driver as a module, choose M here: the module will be
1315 config HPWDT_NMI_DECODING
1316 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1317 depends on HP_WATCHDOG
1320 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1321 "Generate NMI to System" virtual button. When an NMI is claimed
1322 by the driver, panic is called.
1325 tristate "Kontron COM Watchdog Timer"
1326 depends on MFD_KEMPLD
1327 select WATCHDOG_CORE
1329 Support for the PLD watchdog on some Kontron ETX and COMexpress
1330 (ETXexpress) modules
1332 This driver can also be built as a module. If so, the module will be
1336 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1339 This is a driver for National Semiconductor PC87307/PC97307 hardware
1340 watchdog cards as found on the SC1200. This watchdog is mainly used
1341 for power management purposes and can be used to power down the device
1342 during inactivity periods (includes interrupt activity monitoring).
1344 To compile this driver as a module, choose M here: the
1345 module will be called sc1200wdt.
1347 Most people will say N.
1350 tristate "National Semiconductor SCx200 Watchdog"
1351 depends on SCx200 && PCI
1353 Enable the built-in watchdog timer support on the National
1354 Semiconductor SCx200 processors.
1356 If compiled as a module, it will be called scx200_wdt.
1359 tristate "NS PC87413 watchdog"
1362 This is the driver for the hardware watchdog on the PC87413 chipset
1363 This watchdog simply watches your kernel to make sure it doesn't
1364 freeze, and if it does, it reboots your computer after a certain
1367 To compile this driver as a module, choose M here: the
1368 module will be called pc87413_wdt.
1370 Most people will say N.
1373 tristate "nVidia TCO Timer/Watchdog"
1374 depends on X86 && PCI
1376 Hardware driver for the TCO timer built into the nVidia Hub family
1377 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1378 watchdog timer that will reboot the machine after its second
1379 expiration. The expiration time can be configured with the
1380 "heartbeat" parameter.
1382 On some motherboards the driver may fail to reset the chipset's
1383 NO_REBOOT flag which prevents the watchdog from rebooting the
1384 machine. If this is the case you will get a kernel message like
1385 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1387 To compile this driver as a module, choose M here: the
1388 module will be called nv_tco.
1391 tristate "RDC R-321x SoC watchdog"
1392 depends on X86_RDC321X || COMPILE_TEST
1395 This is the driver for the built in hardware watchdog
1396 in the RDC R-321x SoC.
1398 To compile this driver as a module, choose M here: the
1399 module will be called rdc321x_wdt.
1402 tristate "SBC-60XX Watchdog Timer"
1405 This driver can be used with the watchdog timer found on some
1406 single board computers, namely the 6010 PII based computer.
1407 It may well work with other cards. It reads port 0x443 to enable
1408 and re-set the watchdog timer, and reads port 0x45 to disable
1409 the watchdog. If you have a card that behave in similar ways,
1410 you can probably make this driver work with your card as well.
1412 You can compile this driver directly into the kernel, or use
1413 it as a module. The module will be called sbc60xxwdt.
1416 tristate "SBC8360 Watchdog Timer"
1420 This is the driver for the hardware watchdog on the SBC8360 Single
1421 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1423 To compile this driver as a module, choose M here: the
1424 module will be called sbc8360.
1426 Most people will say N.
1429 tristate "SBC Nano 7240 Watchdog Timer"
1430 depends on X86_32 && !UML
1432 This is the driver for the hardware watchdog found on the IEI
1433 single board computers EPIC Nano 7240 (and likely others). This
1434 watchdog simply watches your kernel to make sure it doesn't freeze,
1435 and if it does, it reboots your computer after a certain amount of
1438 To compile this driver as a module, choose M here: the
1439 module will be called sbc7240_wdt.
1442 tristate "SMA CPU5 Watchdog"
1446 To compile this driver as a module, choose M here: the
1447 module will be called cpu5wdt.
1449 config SMSC_SCH311X_WDT
1450 tristate "SMSC SCH311X Watchdog Timer"
1453 This is the driver for the hardware watchdog timer on the
1454 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1455 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1458 To compile this driver as a module, choose M here: the
1459 module will be called sch311x_wdt.
1461 config SMSC37B787_WDT
1462 tristate "Winbond SMsC37B787 Watchdog Timer"
1465 This is the driver for the hardware watchdog component on the
1466 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1467 from Vision Systems and maybe others.
1469 This watchdog simply watches your kernel to make sure it doesn't
1470 freeze, and if it does, it reboots your computer after a certain
1473 Usually a userspace daemon will notify the kernel WDT driver that
1474 userspace is still alive, at regular intervals.
1476 To compile this driver as a module, choose M here: the
1477 module will be called smsc37b787_wdt.
1479 Most people will say N.
1482 tristate "TQ-Systems TQMX86 Watchdog Timer"
1484 select WATCHDOG_CORE
1486 This is the driver for the hardware watchdog timer in the TQMX86 IO
1487 controller found on some of their ComExpress Modules.
1489 To compile this driver as a module, choose M here; the module
1490 will be called tqmx86_wdt.
1492 Most people will say N.
1495 tristate "VIA Watchdog Timer"
1496 depends on X86 && PCI
1497 select WATCHDOG_CORE
1499 This is the driver for the hardware watchdog timer on VIA
1500 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1502 To compile this driver as a module, choose M here; the module
1503 will be called via_wdt.
1505 Most people will say N.
1508 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1510 select WATCHDOG_CORE
1512 This is the driver for the hardware watchdog on the following
1514 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1528 This watchdog simply watches your kernel to make sure it doesn't
1529 freeze, and if it does, it reboots your computer after a certain
1532 To compile this driver as a module, choose M here: the
1533 module will be called w83627hf_wdt.
1535 Most people will say N.
1538 tristate "W83877F (EMACS) Watchdog Timer"
1541 This is the driver for the hardware watchdog on the W83877F chipset
1542 as used in EMACS PC-104 motherboards (and likely others). This
1543 watchdog simply watches your kernel to make sure it doesn't freeze,
1544 and if it does, it reboots your computer after a certain amount of
1547 To compile this driver as a module, choose M here: the
1548 module will be called w83877f_wdt.
1550 Most people will say N.
1553 tristate "W83977F (PCM-5335) Watchdog Timer"
1556 This is the driver for the hardware watchdog on the W83977F I/O chip
1557 as used in AAEON's PCM-5335 SBC (and likely others). This
1558 watchdog simply watches your kernel to make sure it doesn't freeze,
1559 and if it does, it reboots your computer after a certain amount of
1562 To compile this driver as a module, choose M here: the
1563 module will be called w83977f_wdt.
1566 tristate "ZF MachZ Watchdog"
1569 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1570 N. This is the driver for the watchdog timer built-in on that
1571 processor using ZF-Logic interface. This watchdog simply watches
1572 your kernel to make sure it doesn't freeze, and if it does, it
1573 reboots your computer after a certain amount of time.
1575 To compile this driver as a module, choose M here: the
1576 module will be called machzwd.
1578 config SBC_EPX_C3_WATCHDOG
1579 tristate "Winsystems SBC EPX-C3 watchdog"
1582 This is the driver for the built-in watchdog timer on the EPX-C3
1583 Single-board computer made by Winsystems, Inc.
1585 *Note*: This hardware watchdog is not probeable and thus there
1586 is no way to know if writing to its IO address will corrupt
1587 your system or have any real effect. The only way to be sure
1588 that this driver does what you want is to make sure you
1589 are running it on an EPX-C3 from Winsystems with the watchdog
1590 timer at IO address 0x1ee and 0x1ef. It will write to both those
1591 IO ports. Basically, the assumption is made that if you compile
1592 this driver into your kernel and/or load it as a module, that you
1593 know what you are doing and that you are in fact running on an
1596 To compile this driver as a module, choose M here: the
1597 module will be called sbc_epx_c3.
1599 config INTEL_MEI_WDT
1600 tristate "Intel MEI iAMT Watchdog"
1601 depends on INTEL_MEI && X86
1602 select WATCHDOG_CORE
1604 A device driver for the Intel MEI iAMT watchdog.
1606 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1607 Whenever the OS hangs or crashes, iAMT will send an event
1608 to any subscriber to this event. The watchdog doesn't reset the
1611 To compile this driver as a module, choose M here:
1612 the module will be called mei_wdt.
1615 tristate "NI 903x/913x Watchdog"
1616 depends on X86 && ACPI
1617 select WATCHDOG_CORE
1619 This is the driver for the watchdog timer on the National Instruments
1620 903x/913x real-time controllers.
1622 To compile this driver as a module, choose M here: the module will be
1626 tristate "NIC7018 Watchdog"
1627 depends on X86 && ACPI
1628 select WATCHDOG_CORE
1630 Support for National Instruments NIC7018 Watchdog.
1632 To compile this driver as a module, choose M here: the module will be
1637 config M54xx_WATCHDOG
1638 tristate "MCF54xx watchdog support"
1641 To compile this driver as a module, choose M here: the
1642 module will be called m54xx_wdt.
1644 # MicroBlaze Architecture
1649 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1650 depends on ATH79 || (ARM && COMPILE_TEST)
1652 Hardware driver for the built-in watchdog timer on the Atheros
1653 AR71XX/AR724X/AR913X SoCs.
1656 tristate "Broadcom BCM47xx Watchdog Timer"
1657 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1658 select WATCHDOG_CORE
1660 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1663 tristate "IDT RC32434 SoC Watchdog Timer"
1664 depends on MIKROTIK_RB532
1666 Hardware driver for the IDT RC32434 SoC built-in
1669 To compile this driver as a module, choose M here: the
1670 module will be called rc32434_wdt.
1673 tristate "Indy/I2 Hardware Watchdog"
1674 depends on SGI_HAS_INDYDOG
1676 Hardware driver for the Indy's/I2's watchdog. This is a
1677 watchdog timer that will reboot the machine after a 60 second
1678 timer expired and no process has written to /dev/watchdog during
1682 tristate "Ingenic jz4740 SoC hardware watchdog"
1684 depends on COMMON_CLK
1685 select WATCHDOG_CORE
1688 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1691 tristate "MTX-1 Hardware Watchdog"
1692 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1694 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1695 will reboot the machine after a 100 seconds timer expired.
1698 tristate "PNX833x Hardware Watchdog"
1699 depends on SOC_PNX8335
1702 Hardware driver for the PNX833x's watchdog. This is a
1703 watchdog timer that will reboot the machine after a programmable
1704 timer has expired and no process has written to /dev/watchdog during
1708 tristate "Sibyte SoC hardware watchdog"
1709 depends on CPU_SB1 || (MIPS && COMPILE_TEST)
1711 Watchdog driver for the built in watchdog hardware in Sibyte
1712 SoC processors. There are apparently two watchdog timers
1713 on such processors; this driver supports only the first one,
1714 because currently Linux only supports exporting one watchdog
1717 To compile this driver as a loadable module, choose M here.
1718 The module will be called sb_wdog.
1721 tristate "TI AR7 Watchdog Timer"
1722 depends on AR7 || (MIPS && COMPILE_TEST)
1724 Hardware driver for the TI AR7 Watchdog Timer.
1727 tristate "Toshiba TXx9 Watchdog Timer"
1728 depends on CPU_TX39XX || CPU_TX49XX || (MIPS && COMPILE_TEST)
1729 select WATCHDOG_CORE
1731 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1734 tristate "Cavium OCTEON SOC family Watchdog Timer"
1735 depends on CAVIUM_OCTEON_SOC
1737 select WATCHDOG_CORE
1738 select EXPORT_UASM if OCTEON_WDT = m
1740 Hardware driver for OCTEON's on chip watchdog timer.
1741 Enables the watchdog for all cores running Linux. It
1742 installs a NMI handler and pokes the watchdog based on an
1743 interrupt. On first expiration of the watchdog, the
1744 interrupt handler pokes it. The second expiration causes an
1745 NMI that prints a message. The third expiration causes a
1748 When userspace has /dev/watchdog open, no poking is done
1749 from the first interrupt, it is then only poked when the
1753 tristate "Broadcom BCM63xx hardware watchdog"
1756 Watchdog driver for the built in watchdog hardware in Broadcom
1759 To compile this driver as a loadable module, choose M here.
1760 The module will be called bcm63xx_wdt.
1763 tristate "Broadcom BCM2835 hardware watchdog"
1764 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1765 select WATCHDOG_CORE
1767 Watchdog driver for the built in watchdog hardware in Broadcom
1770 To compile this driver as a loadable module, choose M here.
1771 The module will be called bcm2835_wdt.
1774 tristate "BCM Kona Watchdog"
1775 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1776 select WATCHDOG_CORE
1778 Support for the watchdog timer on the following Broadcom BCM281xx
1779 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1782 Say 'Y' or 'M' here to enable the driver. The module will be called
1785 config BCM_KONA_WDT_DEBUG
1786 bool "DEBUGFS support for BCM Kona Watchdog"
1787 depends on BCM_KONA_WDT
1789 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1790 access to the driver's internal data structures as well as watchdog
1791 timer hardware registres.
1793 If in doubt, say 'N'.
1796 tristate "BCM7038 Watchdog"
1797 select WATCHDOG_CORE
1798 depends on HAS_IOMEM
1799 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
1801 Watchdog driver for the built-in hardware in Broadcom 7038 and
1802 later SoCs used in set-top boxes. BCM7038 was made public
1803 during the 2004 CES, and since then, many Broadcom chips use this
1804 watchdog block, including some cable modem chips.
1807 tristate "Imagination Technologies PDC Watchdog Timer"
1808 depends on HAS_IOMEM
1809 depends on MIPS || COMPILE_TEST
1810 select WATCHDOG_CORE
1812 Driver for Imagination Technologies PowerDown Controller
1815 To compile this driver as a loadable module, choose M here.
1816 The module will be called imgpdc_wdt.
1819 tristate "Lantiq SoC watchdog"
1821 select WATCHDOG_CORE
1823 Hardware driver for the Lantiq SoC Watchdog Timer.
1825 config LOONGSON1_WDT
1826 tristate "Loongson1 SoC hardware watchdog"
1827 depends on MACH_LOONGSON32
1828 select WATCHDOG_CORE
1830 Hardware driver for the Loongson1 SoC Watchdog Timer.
1833 tristate "Ralink SoC watchdog"
1834 select WATCHDOG_CORE
1837 Hardware driver for the Ralink SoC Watchdog Timer.
1840 tristate "Mediatek SoC watchdog"
1841 select WATCHDOG_CORE
1842 depends on SOC_MT7620 || SOC_MT7621
1844 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1847 tristate "Microchip PIC32 hardware watchdog"
1848 select WATCHDOG_CORE
1849 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1851 Watchdog driver for the built in watchdog hardware in a PIC32.
1853 Configuration bits must be set appropriately for the watchdog to be
1854 controlled by this driver.
1856 To compile this driver as a loadable module, choose M here.
1857 The module will be called pic32-wdt.
1860 tristate "Microchip PIC32 Deadman Timer"
1861 select WATCHDOG_CORE
1862 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1864 Watchdog driver for PIC32 instruction fetch counting timer. This specific
1865 timer is typically be used in misson critical and safety critical
1866 applications, where any single failure of the software functionality
1867 and sequencing must be detected.
1869 To compile this driver as a loadable module, choose M here.
1870 The module will be called pic32-dmt.
1872 # PARISC Architecture
1874 # POWERPC Architecture
1877 tristate "GE Watchdog Timer"
1880 Watchdog timer found in a number of GE single board computers.
1883 bool "MPC52xx Watchdog Timer"
1884 depends on PPC_MPC52xx || COMPILE_TEST
1886 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1889 tristate "MPC8xxx Platform Watchdog Timer"
1890 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1891 select WATCHDOG_CORE
1893 This driver is for a SoC level watchdog that exists on some
1894 Freescale PowerPC processors. So far this driver supports:
1899 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1902 tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
1903 depends on MV64X60 || COMPILE_TEST
1906 tristate "PIKA FPGA Watchdog"
1907 depends on WARP || (PPC64 && COMPILE_TEST)
1910 This enables the watchdog in the PIKA FPGA. Currently used on
1914 tristate "PowerPC Book-E Watchdog Timer"
1915 depends on BOOKE || 4xx
1916 select WATCHDOG_CORE
1918 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1919 MPC85xx SOCs and the IBM PowerPC 440.
1921 Please see Documentation/watchdog/watchdog-api.rst for
1924 config BOOKE_WDT_DEFAULT_TIMEOUT
1925 int "PowerPC Book-E Watchdog Timer Default Timeout"
1926 depends on BOOKE_WDT
1927 default 38 if PPC_FSL_BOOK3E
1928 range 0 63 if PPC_FSL_BOOK3E
1929 default 3 if !PPC_FSL_BOOK3E
1930 range 0 3 if !PPC_FSL_BOOK3E
1932 Select the default watchdog timer period to be used by the PowerPC
1933 Book-E watchdog driver. A watchdog "event" occurs when the bit
1934 position represented by this number transitions from zero to one.
1936 For Freescale Book-E processors, this is a number between 0 and 63.
1937 For other Book-E processors, this is a number between 0 and 3.
1939 The value can be overridden by the wdt_period command-line parameter.
1942 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1943 select WATCHDOG_CORE
1944 depends on GPIOLIB || COMPILE_TEST
1946 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1948 The driver can also be built as a module. If so, the module will be
1951 If unsure select N here.
1953 # PPC64 Architecture
1955 config WATCHDOG_RTAS
1956 tristate "RTAS watchdog"
1959 This driver adds watchdog support for the RTAS watchdog.
1961 To compile this driver as a module, choose M here. The module
1962 will be called wdrtas.
1966 config DIAG288_WATCHDOG
1967 tristate "System z diag288 Watchdog"
1969 select WATCHDOG_CORE
1971 IBM s/390 and zSeries machines running under z/VM 5.1 or later
1972 provide a virtual watchdog timer to their guest that cause a
1973 user define Control Program command to be executed after a
1975 LPAR provides a very similar interface. This driver handles
1978 To compile this driver as a module, choose M here. The module
1979 will be called diag288_wdt.
1981 # SUPERH (sh + sh64) Architecture
1984 tristate "SuperH Watchdog"
1985 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
1986 select WATCHDOG_CORE
1988 This driver adds watchdog support for the integrated watchdog in the
1989 SuperH processors. If you have one of these processors and wish
1990 to have watchdog support enabled, say Y, otherwise say N.
1992 As a side note, saying Y here will automatically boost HZ to 1000
1993 so that the timer has a chance to clear the overflow counter. On
1994 slower systems (such as the SH-2 and SH-3) this will likely yield
1995 some performance issues. As such, the WDT should be avoided here
1996 unless it is absolutely necessary.
1998 To compile this driver as a module, choose M here: the
1999 module will be called shwdt.
2001 # SPARC Architecture
2003 # SPARC64 Architecture
2005 config WATCHDOG_CP1XXX
2006 tristate "CP1XXX Hardware Watchdog support"
2007 depends on SPARC64 && PCI
2009 This is the driver for the hardware watchdog timers present on
2010 Sun Microsystems CompactPCI models CP1400 and CP1500.
2012 To compile this driver as a module, choose M here: the
2013 module will be called cpwatchdog.
2015 If you do not have a CompactPCI model CP1400 or CP1500, or
2016 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2017 you should say N to this option.
2020 tristate "RIO Hardware Watchdog support"
2021 depends on SPARC64 && PCI
2023 Say Y here to support the hardware watchdog capability on Sun RIO
2024 machines. The watchdog timeout period is normally one minute but
2025 can be changed with a boot-time parameter.
2027 config WATCHDOG_SUN4V
2028 tristate "Sun4v Watchdog support"
2029 select WATCHDOG_CORE
2032 Say Y here to support the hypervisor watchdog capability embedded
2033 in the SPARC sun4v architecture.
2035 To compile this driver as a module, choose M here. The module will
2036 be called sun4v_wdt.
2038 # XTENSA Architecture
2043 tristate "Xen Watchdog support"
2045 select WATCHDOG_CORE
2047 Say Y here to support the hypervisor watchdog capability provided
2048 by Xen 4.0 and newer. The watchdog timeout period is normally one
2049 minute but can be changed with a boot-time parameter.
2052 tristate "UML watchdog"
2053 depends on UML || COMPILE_TEST
2056 # ISA-based Watchdog Cards
2059 comment "ISA-based Watchdog Cards"
2063 tristate "Berkshire Products ISA-PC Watchdog"
2066 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2067 This card simply watches your kernel to make sure it doesn't freeze,
2068 and if it does, it reboots your computer after a certain amount of
2069 time. This driver is like the WDT501 driver but for different
2070 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>. The PC
2071 watchdog cards can be ordered from <http://www.berkprod.com/>.
2073 To compile this driver as a module, choose M here: the
2074 module will be called pcwd.
2076 Most people will say N.
2079 tristate "Mixcom Watchdog"
2082 This is a driver for the Mixcom hardware watchdog cards. This
2083 watchdog 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
2087 To compile this driver as a module, choose M here: the
2088 module will be called mixcomwd.
2090 Most people will say N.
2093 tristate "WDT Watchdog timer"
2096 If you have a WDT500P or WDT501P watchdog board, say Y here,
2097 otherwise N. It is not possible to probe for this board, which means
2098 that you have to inform the kernel about the IO port and IRQ that
2099 is needed (you can do this via the io and irq parameters)
2101 To compile this driver as a module, choose M here: the
2102 module will be called wdt.
2105 # PCI-based Watchdog Cards
2108 comment "PCI-based Watchdog Cards"
2111 config PCIPCWATCHDOG
2112 tristate "Berkshire Products PCI-PC Watchdog"
2115 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2116 This card simply watches your kernel to make sure it doesn't freeze,
2117 and if it does, it reboots your computer after a certain amount of
2118 time. The card can also monitor the internal temperature of the PC.
2119 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2121 To compile this driver as a module, choose M here: the
2122 module will be called pcwd_pci.
2124 Most people will say N.
2127 tristate "PCI-WDT500/501 Watchdog timer"
2130 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2132 If you have a PCI-WDT501 watchdog board then you can enable the
2133 temperature sensor by setting the type parameter to 501.
2135 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2136 can do this via the tachometer parameter. Only do this if you have a
2137 fan tachometer actually set up.
2139 To compile this driver as a module, choose M here: the
2140 module will be called wdt_pci.
2143 # USB-based Watchdog Cards
2146 comment "USB-based Watchdog Cards"
2149 config USBPCWATCHDOG
2150 tristate "Berkshire Products USB-PC Watchdog"
2153 This is the driver for the Berkshire Products USB-PC Watchdog card.
2154 This card simply watches your kernel to make sure it doesn't freeze,
2155 and if it does, it reboots your computer after a certain amount of
2156 time. The card can also monitor the internal temperature of the PC.
2157 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2159 To compile this driver as a module, choose M here: the
2160 module will be called pcwd_usb.
2162 Most people will say N.