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
393 Say Y here to include support for the watchdog timer found on
394 Marvell Armada 37xx SoCs.
395 To compile this driver as a module, choose M here: the
396 module will be called armada_37xx_wdt.
398 config ASM9260_WATCHDOG
399 tristate "Alphascale ASM9260 watchdog"
400 depends on MACH_ASM9260 || COMPILE_TEST
403 select RESET_CONTROLLER
405 Watchdog timer embedded into Alphascale asm9260 chips. This will reboot your
406 system when the timeout is reached.
408 config AT91RM9200_WATCHDOG
409 tristate "AT91RM9200 watchdog"
410 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
412 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
413 system when the timeout is reached.
415 config AT91SAM9X_WATCHDOG
416 tristate "AT91SAM9X / AT91CAP9 watchdog"
417 depends on ARCH_AT91 || COMPILE_TEST
420 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
421 reboot your system when the timeout is reached.
423 config SAMA5D4_WATCHDOG
424 tristate "Atmel SAMA5D4 Watchdog Timer"
425 depends on ARCH_AT91 || COMPILE_TEST
428 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
429 Its Watchdog Timer Mode Register can be written more than once.
430 This will reboot your system when the timeout is reached.
432 config CADENCE_WATCHDOG
433 tristate "Cadence Watchdog Timer"
437 Say Y here if you want to include support for the watchdog
438 timer in the Xilinx Zynq.
440 config 21285_WATCHDOG
441 tristate "DC21285 watchdog"
442 depends on FOOTBRIDGE
444 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
445 here if you wish to use this. Alternatively say M to compile the
446 driver as a module, which will be called wdt285.
448 This driver does not work on all machines. In particular, early CATS
449 boards have hardware problems that will cause the machine to simply
450 lock up if the watchdog fires.
452 "If in doubt, leave it out" - say N.
455 tristate "NetWinder WB83C977 watchdog"
456 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
458 Say Y here to include support for the WB977 watchdog included in
459 NetWinder machines. Alternatively say M to compile the driver as
460 a module, which will be called wdt977.
462 Not sure? It's safe to say N.
464 config FTWDT010_WATCHDOG
465 tristate "Faraday Technology FTWDT010 watchdog"
466 depends on ARM || COMPILE_TEST
470 Say Y here if to include support for the Faraday Technology
471 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
474 To compile this driver as a module, choose M here: the
475 module will be called ftwdt010_wdt.
477 config IXP4XX_WATCHDOG
478 tristate "IXP4xx Watchdog"
479 depends on ARCH_IXP4XX
481 Say Y here if to include support for the watchdog timer
482 in the Intel IXP4xx network processors. This driver can
483 be built as a module by choosing M. The module will
484 be called ixp4xx_wdt.
486 Note: The internal IXP4xx watchdog does a soft CPU reset
487 which doesn't reset any peripherals. There are circumstances
488 where the watchdog will fail to reset the board correctly
489 (e.g., if the boot ROM is in an unreadable state).
491 Say N if you are unsure.
493 config S3C2410_WATCHDOG
494 tristate "S3C2410 Watchdog"
495 depends on ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || \
498 select MFD_SYSCON if ARCH_EXYNOS
500 Watchdog timer block in the Samsung SoCs. This will reboot
501 the system when the timer expires with the watchdog enabled.
503 The driver is limited by the speed of the system's PCLK
504 signal, so with reasonably fast systems (PCLK around 50-66MHz)
505 then watchdog intervals of over approximately 20seconds are
508 The driver can be built as a module by choosing M, and will
509 be called s3c2410_wdt
511 config SA1100_WATCHDOG
512 tristate "SA1100/PXA2xx watchdog"
513 depends on ARCH_SA1100 || ARCH_PXA
515 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
516 reboot your system when timeout is reached.
518 NOTE: once enabled, this timer cannot be disabled.
520 To compile this driver as a module, choose M here: the
521 module will be called sa1100_wdt.
524 tristate "Synopsys DesignWare watchdog"
528 Say Y here if to include support for the Synopsys DesignWare
529 watchdog timer found in many chips.
530 To compile this driver as a module, choose M here: the
531 module will be called dw_wdt.
533 config EP93XX_WATCHDOG
534 tristate "EP93xx Watchdog"
535 depends on ARCH_EP93XX || COMPILE_TEST
538 Say Y here if to include support for the watchdog timer
539 embedded in the Cirrus Logic EP93xx family of devices.
541 To compile this driver as a module, choose M here: the
542 module will be called ep93xx_wdt.
545 tristate "OMAP Watchdog"
546 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
549 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog. Say 'Y'
550 here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
552 config PNX4008_WATCHDOG
553 tristate "LPC32XX Watchdog"
554 depends on ARCH_LPC32XX || COMPILE_TEST
557 Say Y here if to include support for the watchdog timer
558 in the LPC32XX processor.
559 This driver can be built as a module by choosing M. The module
560 will be called pnx4008_wdt.
562 Say N if you are unsure.
565 tristate "IOP Watchdog"
566 depends on ARCH_IOP13XX
567 select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X)
569 Say Y here if to include support for the watchdog timer
570 in the Intel IOP3XX & IOP13XX I/O Processors. This driver can
571 be built as a module by choosing M. The module will
574 Note: The IOP13XX watchdog does an Internal Bus Reset which will
575 affect both cores and the peripherals of the IOP. The ATU-X
576 and/or ATUe configuration registers will remain intact, but if
577 operating as an Root Complex and/or Central Resource, the PCI-X
578 and/or PCIe busses will also be reset. THIS IS A VERY BIG HAMMER.
580 config DAVINCI_WATCHDOG
581 tristate "DaVinci watchdog"
582 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
585 Say Y here if to include support for the watchdog timer
586 in the DaVinci DM644x/DM646x or Keystone processors.
587 To compile this driver as a module, choose M here: the
588 module will be called davinci_wdt.
590 NOTE: once enabled, this timer cannot be disabled.
591 Say N if you are unsure.
593 config K3_RTI_WATCHDOG
594 tristate "Texas Instruments K3 RTI watchdog"
595 depends on ARCH_K3 || COMPILE_TEST
598 Say Y here if you want to include support for the K3 watchdog
599 timer (RTI module) available in the K3 generation of processors.
601 config ORION_WATCHDOG
602 tristate "Orion watchdog"
603 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST
607 Say Y here if to include support for the watchdog timer
608 in the Marvell Orion5x and Kirkwood ARM SoCs.
609 To compile this driver as a module, choose M here: the
610 module will be called orion_wdt.
612 config RN5T618_WATCHDOG
613 tristate "Ricoh RN5T618 watchdog"
614 depends on MFD_RN5T618 || COMPILE_TEST
617 If you say yes here you get support for watchdog on the Ricoh
620 This driver can also be built as a module. If so, the module
621 will be called rn5t618_wdt.
623 config SUNXI_WATCHDOG
624 tristate "Allwinner SoCs watchdog support"
625 depends on ARCH_SUNXI || COMPILE_TEST
628 Say Y here to include support for the watchdog timer
630 To compile this driver as a module, choose M here: the
631 module will be called sunxi_wdt.
633 config COH901327_WATCHDOG
634 bool "ST-Ericsson COH 901 327 watchdog"
635 depends on ARCH_U300 || (ARM && COMMON_CLK && COMPILE_TEST)
636 default y if MACH_U300
639 Say Y here to include Watchdog timer support for the
640 watchdog embedded into the ST-Ericsson U300 series platforms.
641 This watchdog is used to reset the system and thus cannot be
642 compiled as a module.
644 config NPCM7XX_WATCHDOG
645 tristate "Nuvoton NPCM750 watchdog"
646 depends on ARCH_NPCM || COMPILE_TEST
647 default y if ARCH_NPCM7XX
650 Say Y here to include Watchdog timer support for the
651 watchdog embedded into the NPCM7xx.
652 This watchdog is used to reset the system and thus cannot be
653 compiled as a module.
655 config TWL4030_WATCHDOG
656 tristate "TWL4030 Watchdog"
657 depends on TWL4030_CORE
660 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
661 watchdog timer support for TWL4030 chips.
663 config STMP3XXX_RTC_WATCHDOG
664 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
665 depends on RTC_DRV_STMP || COMPILE_TEST
668 Say Y here to include support for the watchdog timer inside
669 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
670 To compile this driver as a module, choose M here: the
671 module will be called stmp3xxx_rtc_wdt.
673 config TS4800_WATCHDOG
674 tristate "TS-4800 Watchdog"
675 depends on HAS_IOMEM && OF
676 depends on SOC_IMX51 || COMPILE_TEST
680 Technologic Systems TS-4800 has watchdog timer implemented in
681 an external FPGA. Say Y here if you want to support for the
682 watchdog timer on TS-4800 board.
684 config TS72XX_WATCHDOG
685 tristate "TS-72XX SBC Watchdog"
686 depends on MACH_TS72XX || COMPILE_TEST
689 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
690 watchdog timer implemented in a external CPLD chip. Say Y here
691 if you want to support for the watchdog timer on TS-72XX boards.
693 To compile this driver as a module, choose M here: the
694 module will be called ts72xx_wdt.
696 config MAX63XX_WATCHDOG
697 tristate "Max63xx watchdog"
701 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
703 config MAX77620_WATCHDOG
704 tristate "Maxim Max77620 Watchdog Timer"
705 depends on MFD_MAX77620 || COMPILE_TEST
708 This is the driver for the Max77620 watchdog timer.
709 Say 'Y' here to enable the watchdog timer support for
710 MAX77620 chips. To compile this driver as a module,
711 choose M here: the module will be called max77620_wdt.
714 tristate "IMX2+ Watchdog"
715 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
719 This is the driver for the hardware watchdog
720 on the Freescale IMX2 and later processors.
721 If you have one of these processors and wish to have
722 watchdog support enabled, say Y, otherwise say N.
724 To compile this driver as a module, choose M here: the
725 module will be called imx2_wdt.
728 tristate "IMX SC Watchdog"
729 depends on HAVE_ARM_SMCCC
733 This is the driver for the system controller watchdog
734 on the NXP i.MX SoCs with system controller inside, the
735 watchdog driver will call ARM SMC API and trap into
736 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
737 will request system controller to execute the operations.
738 If you have one of these processors and wish to have
739 watchdog support enabled, say Y, otherwise say N.
741 To compile this driver as a module, choose M here: the
742 module will be called imx_sc_wdt.
745 tristate "IMX7ULP Watchdog"
746 depends on ARCH_MXC || COMPILE_TEST
749 This is the driver for the hardware watchdog on the Freescale
750 IMX7ULP and later processors. If you have one of these
751 processors and wish to have watchdog support enabled,
752 say Y, otherwise say N.
754 To compile this driver as a module, choose M here: the
755 module will be called imx7ulp_wdt.
757 config UX500_WATCHDOG
758 tristate "ST-Ericsson Ux500 watchdog"
759 depends on MFD_DB8500_PRCMU
763 Say Y here to include Watchdog timer support for the watchdog
764 existing in the prcmu of ST-Ericsson Ux500 series platforms.
766 To compile this driver as a module, choose M here: the
767 module will be called ux500_wdt.
770 tristate "Retu watchdog"
774 Retu watchdog driver for Nokia Internet Tablets (770, N800,
775 N810). At least on N800 the watchdog cannot be disabled, so
776 this driver is essential and you should enable it.
778 To compile this driver as a module, choose M here: the
779 module will be called retu_wdt.
782 tristate "MOXART watchdog"
783 depends on ARCH_MOXART || COMPILE_TEST
785 Say Y here to include Watchdog timer support for the watchdog
786 existing on the MOXA ART SoC series platforms.
788 To compile this driver as a module, choose M here: the
789 module will be called moxart_wdt.
791 config SIRFSOC_WATCHDOG
792 tristate "SiRFSOC watchdog"
794 depends on ARCH_SIRF || COMPILE_TEST
798 Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When
799 the watchdog triggers the system will be reset.
801 config ST_LPC_WATCHDOG
802 tristate "STMicroelectronics LPC Watchdog"
803 depends on ARCH_STI || COMPILE_TEST
807 Say Y here to include STMicroelectronics Low Power Controller
808 (LPC) based Watchdog timer support.
810 To compile this driver as a module, choose M here: the
811 module will be called st_lpc_wdt.
813 config TEGRA_WATCHDOG
814 tristate "Tegra watchdog"
815 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
818 Say Y here to include support for the watchdog timer
819 embedded in NVIDIA Tegra SoCs.
821 To compile this driver as a module, choose M here: the
822 module will be called tegra_wdt.
825 tristate "QCOM watchdog"
827 depends on ARCH_QCOM || COMPILE_TEST
830 Say Y here to include Watchdog timer support for the watchdog found
831 on QCOM chipsets. Currently supported targets are the MSM8960,
832 APQ8064, and IPQ8064.
834 To compile this driver as a module, choose M here: the
835 module will be called qcom_wdt.
837 config MESON_GXBB_WATCHDOG
838 tristate "Amlogic Meson GXBB SoCs watchdog support"
839 depends on ARCH_MESON || COMPILE_TEST
842 Say Y here to include support for the watchdog timer
843 in Amlogic Meson GXBB SoCs.
844 To compile this driver as a module, choose M here: the
845 module will be called meson_gxbb_wdt.
847 config MESON_WATCHDOG
848 tristate "Amlogic Meson SoCs watchdog support"
849 depends on ARCH_MESON || COMPILE_TEST
852 Say Y here to include support for the watchdog timer
853 in Amlogic Meson SoCs.
854 To compile this driver as a module, choose M here: the
855 module will be called meson_wdt.
857 config MEDIATEK_WATCHDOG
858 tristate "Mediatek SoCs watchdog support"
859 depends on ARCH_MEDIATEK || COMPILE_TEST
861 select RESET_CONTROLLER
863 Say Y here to include support for the watchdog timer
865 To compile this driver as a module, choose M here: the
866 module will be called mtk_wdt.
868 config DIGICOLOR_WATCHDOG
869 tristate "Conexant Digicolor SoCs watchdog support"
870 depends on ARCH_DIGICOLOR || COMPILE_TEST
873 Say Y here to include support for the watchdog timer
874 in Conexant Digicolor SoCs.
875 To compile this driver as a module, choose M here: the
876 module will be called digicolor_wdt.
878 config ARM_SMC_WATCHDOG
879 tristate "ARM Secure Monitor Call based watchdog support"
880 depends on ARM || ARM64
882 depends on HAVE_ARM_SMCCC
885 Say Y here to include support for a watchdog timer
886 implemented by the EL3 Secure Monitor on ARM platforms.
887 Requires firmware support.
888 To compile this driver as a module, choose M here: the
889 module will be called arm_smc_wdt.
891 config LPC18XX_WATCHDOG
892 tristate "LPC18xx/43xx Watchdog"
893 depends on ARCH_LPC18XX || COMPILE_TEST
897 Say Y here if to include support for the watchdog timer
898 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
900 To compile this driver as a module, choose M here: the
901 module will be called lpc18xx_wdt.
903 config ATLAS7_WATCHDOG
904 tristate "CSRatlas7 watchdog"
905 depends on ARCH_ATLAS7 || COMPILE_TEST
907 Say Y here to include Watchdog timer support for the watchdog
908 existing on the CSRatlas7 series platforms.
910 To compile this driver as a module, choose M here: the
911 module will be called atlas7_wdt.
914 tristate "Renesas WDT Watchdog"
915 depends on ARCH_RENESAS || COMPILE_TEST
918 This driver adds watchdog support for the integrated watchdogs in the
919 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
921 config RENESAS_RZAWDT
922 tristate "Renesas RZ/A WDT Watchdog"
923 depends on ARCH_RENESAS || COMPILE_TEST
926 This driver adds watchdog support for the integrated watchdogs in the
927 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
929 config ASPEED_WATCHDOG
930 tristate "Aspeed BMC watchdog support"
931 depends on ARCH_ASPEED || COMPILE_TEST
934 Say Y here to include support for the watchdog timer
937 This driver is required to reboot the SoC.
939 To compile this driver as a module, choose M here: the
940 module will be called aspeed_wdt.
942 config ZX2967_WATCHDOG
943 tristate "ZTE zx2967 SoCs watchdog support"
947 Say Y here to include support for the watchdog timer
949 To compile this driver as a module, choose M here: the
950 module will be called zx2967_wdt.
952 config STM32_WATCHDOG
953 tristate "STM32 Independent WatchDoG (IWDG) support"
954 depends on ARCH_STM32
958 Say Y here to include support for the watchdog timer
961 To compile this driver as a module, choose M here: the
962 module will be called stm32_iwdg.
964 config STPMIC1_WATCHDOG
965 tristate "STPMIC1 PMIC watchdog support"
966 depends on MFD_STPMIC1
969 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
970 If the watchdog timer expires, stpmic1 will shut down all its power
973 To compile this driver as a module, choose M here: the
974 module will be called spmic1_wdt.
976 config UNIPHIER_WATCHDOG
977 tristate "UniPhier watchdog support"
978 depends on ARCH_UNIPHIER || COMPILE_TEST
979 depends on OF && MFD_SYSCON
982 Say Y here to include support watchdog timer embedded
983 into the UniPhier system.
985 To compile this driver as a module, choose M here: the
986 module will be called uniphier_wdt.
988 config RTD119X_WATCHDOG
989 bool "Realtek RTD119x/RTD129x watchdog support"
990 depends on ARCH_REALTEK || COMPILE_TEST
995 Say Y here to include support for the watchdog timer in
996 Realtek RTD1295 SoCs.
999 tristate "Spreadtrum watchdog support"
1000 depends on ARCH_SPRD || COMPILE_TEST
1001 select WATCHDOG_CORE
1003 Say Y here to include watchdog timer supported
1004 by Spreadtrum system.
1006 config PM8916_WATCHDOG
1007 tristate "QCOM PM8916 pmic watchdog"
1008 depends on OF && MFD_SPMI_PMIC
1009 select WATCHDOG_CORE
1011 Say Y here to include support watchdog timer embedded into the
1014 config VISCONTI_WATCHDOG
1015 tristate "Toshiba Visconti series watchdog support"
1016 depends on ARCH_VISCONTI || COMPILE_TEST
1017 select WATCHDOG_CORE
1019 Say Y here to include support for the watchdog timer in Toshiba
1022 # X86 (i386 + ia64 + x86_64) Architecture
1025 tristate "Acquire SBC Watchdog Timer"
1028 This is the driver for the hardware watchdog on Single Board
1029 Computers produced by Acquire Inc (and others). This watchdog
1030 simply watches your kernel to make sure it doesn't freeze, and if
1031 it does, it reboots your computer after a certain amount of time.
1033 To compile this driver as a module, choose M here: the
1034 module will be called acquirewdt.
1036 Most people will say N.
1038 config ADVANTECH_WDT
1039 tristate "Advantech SBC Watchdog Timer"
1042 If you are configuring a Linux kernel for the Advantech single-board
1043 computer, say `Y' here to support its built-in watchdog timer
1044 feature. More information can be found at
1045 <https://www.advantech.com.tw/products/>
1048 tristate "ALi M1535 PMU Watchdog Timer"
1049 depends on X86 && PCI
1051 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1053 To compile this driver as a module, choose M here: the
1054 module will be called alim1535_wdt.
1056 Most people will say N.
1059 tristate "ALi M7101 PMU Computer Watchdog"
1062 This is the driver for the hardware watchdog on the ALi M7101 PMU
1063 as used in the x86 Cobalt servers and also found in some
1064 SPARC Netra servers too.
1066 To compile this driver as a module, choose M here: the
1067 module will be called alim7101_wdt.
1069 Most people will say N.
1072 tristate "WinSystems EBC-C384 Watchdog Timer"
1075 select WATCHDOG_CORE
1077 Enables watchdog timer support for the watchdog timer on the
1078 WinSystems EBC-C384 motherboard. The timeout may be configured via
1079 the timeout module parameter.
1082 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1085 This is the driver for the hardware watchdog on the Fintek F71808E,
1086 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1087 F81866 Super I/O controllers.
1089 You can compile this driver directly into the kernel, or use
1090 it as a module. The module will be called f71808e_wdt.
1093 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1094 depends on X86 && PCI
1095 select WATCHDOG_CORE
1097 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1098 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1099 the machine after its expiration. The expiration time can be
1100 configured with the "heartbeat" parameter.
1102 To compile this driver as a module, choose M here: the
1103 module will be called sp5100_tco.
1106 tristate "AMD Geode CS5535/CS5536 Watchdog"
1107 depends on CS5535_MFGPT
1109 This driver enables a watchdog capability built into the
1110 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1111 processors. This watchdog watches your kernel to make sure
1112 it doesn't freeze, and if it does, it reboots your computer after
1113 a certain amount of time.
1115 You can compile this driver directly into the kernel, or use
1116 it as a module. The module will be called geodewdt.
1119 tristate "AMD Elan SC520 processor Watchdog"
1120 depends on MELAN || COMPILE_TEST
1122 This is the driver for the hardware watchdog built in to the
1123 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1124 This watchdog simply watches your kernel to make sure it doesn't
1125 freeze, and if it does, it reboots your computer after a certain
1128 You can compile this driver directly into the kernel, or use
1129 it as a module. The module will be called sc520_wdt.
1131 config SBC_FITPC2_WATCHDOG
1132 tristate "Compulab SBC-FITPC2 watchdog"
1135 This is the driver for the built-in watchdog timer on the fit-PC2,
1136 fit-PC2i, CM-iAM single-board computers made by Compulab.
1138 It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux.
1139 When "Watchdog Timer Value" enabled one can set 31-255 s operational range.
1141 Entering BIOS setup temporary disables watchdog operation regardless to current state,
1142 so system will not be restarted while user in BIOS setup.
1144 Once watchdog was enabled the system will be restarted every
1145 "Watchdog Timer Value" period, so to prevent it user can restart or
1146 disable the watchdog.
1148 To compile this driver as a module, choose M here: the
1149 module will be called sbc_fitpc2_wdt.
1151 Most people will say N.
1154 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1157 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1158 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1159 information are at <http://www.eurotech.it/>.
1162 tristate "IB700 SBC Watchdog Timer"
1165 This is the driver for the hardware watchdog on the IB700 Single
1166 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
1167 simply watches your kernel to make sure it doesn't freeze, and if
1168 it does, it reboots your computer after a certain amount of time.
1170 This driver is like the WDT501 driver but for slightly different hardware.
1172 To compile this driver as a module, choose M here: the
1173 module will be called ib700wdt.
1175 Most people will say N.
1178 tristate "IBM Automatic Server Restart"
1181 This is the driver for the IBM Automatic Server Restart watchdog
1182 timer built-in into some eServer xSeries machines.
1184 To compile this driver as a module, choose M here: the
1185 module will be called ibmasr.
1188 tristate "ICP Single Board Computer Watchdog Timer"
1191 This is a driver for the hardware watchdog on the ICP Single
1192 Board Computer. This driver is working on (at least) the following
1193 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1195 To compile this driver as a module, choose M here: the
1196 module will be called wafer5823wdt.
1199 tristate "Intel 6300ESB Timer/Watchdog"
1201 select WATCHDOG_CORE
1203 Hardware driver for the watchdog timer built into the Intel
1204 6300ESB controller hub.
1206 To compile this driver as a module, choose M here: the
1207 module will be called i6300esb.
1210 tristate "Intel Atom E6xx Watchdog"
1211 depends on X86 && PCI
1212 select WATCHDOG_CORE
1216 Hardware driver for the watchdog timer built into the Intel
1217 Atom E6XX (TunnelCreek) processor.
1219 To compile this driver as a module, choose M here: the
1220 module will be called ie6xx_wdt.
1222 config INTEL_SCU_WATCHDOG
1223 bool "Intel SCU Watchdog for Mobile Platforms"
1224 depends on X86_INTEL_MID
1226 Hardware driver for the watchdog time built into the Intel SCU
1227 for Intel Mobile Platforms.
1229 To compile this driver as a module, choose M here.
1231 config INTEL_MID_WATCHDOG
1232 tristate "Intel MID Watchdog Timer"
1233 depends on X86_INTEL_MID
1234 select WATCHDOG_CORE
1236 Watchdog timer driver built into the Intel SCU for Intel MID
1239 This driver currently supports only the watchdog evolution
1240 implementation in SCU, available for Merrifield generation.
1242 To compile this driver as a module, choose M here.
1245 tristate "Intel TCO Timer/Watchdog"
1246 depends on (X86 || IA64) && PCI
1247 select WATCHDOG_CORE
1248 depends on I2C || I2C=n
1249 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1250 select LPC_ICH if !EXPERT
1251 select I2C_I801 if !EXPERT && I2C
1253 Hardware driver for the intel TCO timer based watchdog devices.
1254 These drivers are included in the Intel 82801 I/O Controller
1255 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1258 The TCO (Total Cost of Ownership) timer is a watchdog timer
1259 that will reboot the machine after its second expiration. The
1260 expiration time can be configured with the "heartbeat" parameter.
1262 On some motherboards the driver may fail to reset the chipset's
1263 NO_REBOOT flag which prevents the watchdog from rebooting the
1264 machine. If this is the case you will get a kernel message like
1265 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1267 To compile this driver as a module, choose M here: the
1268 module will be called iTCO_wdt.
1270 config ITCO_VENDOR_SUPPORT
1271 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1274 Add vendor specific support to the intel TCO timer based watchdog
1275 devices. At this moment we only have additional support for some
1276 SuperMicro Inc. motherboards.
1279 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1282 This is the driver for the built-in watchdog timer on the IT8712F
1283 Super I/0 chipset used on many motherboards.
1285 If the driver does not work, then make sure that the game port in
1286 the BIOS is enabled.
1288 To compile this driver as a module, choose M here: the
1289 module will be called it8712f_wdt.
1292 tristate "IT87 Watchdog Timer"
1294 select WATCHDOG_CORE
1296 This is the driver for the hardware watchdog on the ITE IT8607,
1297 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1298 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1299 IT8783 Super I/O chips.
1301 This watchdog simply watches your kernel to make sure it doesn't
1302 freeze, and if it does, it reboots your computer after a certain
1305 To compile this driver as a module, choose M here: the module will
1309 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1310 select WATCHDOG_CORE
1311 depends on X86 && PCI
1313 A software monitoring watchdog and NMI handling driver. This driver
1314 will detect lockups and provide a stack trace. This is a driver that
1315 will only load on an HP ProLiant system with a minimum of iLO2 support.
1316 To compile this driver as a module, choose M here: the module will be
1319 config HPWDT_NMI_DECODING
1320 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1321 depends on HP_WATCHDOG
1324 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1325 "Generate NMI to System" virtual button. When an NMI is claimed
1326 by the driver, panic is called.
1329 tristate "Kontron COM Watchdog Timer"
1330 depends on MFD_KEMPLD
1331 select WATCHDOG_CORE
1333 Support for the PLD watchdog on some Kontron ETX and COMexpress
1334 (ETXexpress) modules
1336 This driver can also be built as a module. If so, the module will be
1340 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1343 This is a driver for National Semiconductor PC87307/PC97307 hardware
1344 watchdog cards as found on the SC1200. This watchdog is mainly used
1345 for power management purposes and can be used to power down the device
1346 during inactivity periods (includes interrupt activity monitoring).
1348 To compile this driver as a module, choose M here: the
1349 module will be called sc1200wdt.
1351 Most people will say N.
1354 tristate "National Semiconductor SCx200 Watchdog"
1355 depends on SCx200 && PCI
1357 Enable the built-in watchdog timer support on the National
1358 Semiconductor SCx200 processors.
1360 If compiled as a module, it will be called scx200_wdt.
1363 tristate "NS PC87413 watchdog"
1366 This is the driver for the hardware watchdog on the PC87413 chipset
1367 This watchdog simply watches your kernel to make sure it doesn't
1368 freeze, and if it does, it reboots your computer after a certain
1371 To compile this driver as a module, choose M here: the
1372 module will be called pc87413_wdt.
1374 Most people will say N.
1377 tristate "nVidia TCO Timer/Watchdog"
1378 depends on X86 && PCI
1380 Hardware driver for the TCO timer built into the nVidia Hub family
1381 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1382 watchdog timer that will reboot the machine after its second
1383 expiration. The expiration time can be configured with the
1384 "heartbeat" parameter.
1386 On some motherboards the driver may fail to reset the chipset's
1387 NO_REBOOT flag which prevents the watchdog from rebooting the
1388 machine. If this is the case you will get a kernel message like
1389 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1391 To compile this driver as a module, choose M here: the
1392 module will be called nv_tco.
1395 tristate "RDC R-321x SoC watchdog"
1396 depends on X86_RDC321X || COMPILE_TEST
1399 This is the driver for the built in hardware watchdog
1400 in the RDC R-321x SoC.
1402 To compile this driver as a module, choose M here: the
1403 module will be called rdc321x_wdt.
1406 tristate "SBC-60XX Watchdog Timer"
1409 This driver can be used with the watchdog timer found on some
1410 single board computers, namely the 6010 PII based computer.
1411 It may well work with other cards. It reads port 0x443 to enable
1412 and re-set the watchdog timer, and reads port 0x45 to disable
1413 the watchdog. If you have a card that behave in similar ways,
1414 you can probably make this driver work with your card as well.
1416 You can compile this driver directly into the kernel, or use
1417 it as a module. The module will be called sbc60xxwdt.
1420 tristate "SBC8360 Watchdog Timer"
1424 This is the driver for the hardware watchdog on the SBC8360 Single
1425 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1427 To compile this driver as a module, choose M here: the
1428 module will be called sbc8360.
1430 Most people will say N.
1433 tristate "SBC Nano 7240 Watchdog Timer"
1434 depends on X86_32 && !UML
1436 This is the driver for the hardware watchdog found on the IEI
1437 single board computers EPIC Nano 7240 (and likely others). This
1438 watchdog simply watches your kernel to make sure it doesn't freeze,
1439 and if it does, it reboots your computer after a certain amount of
1442 To compile this driver as a module, choose M here: the
1443 module will be called sbc7240_wdt.
1446 tristate "SMA CPU5 Watchdog"
1450 To compile this driver as a module, choose M here: the
1451 module will be called cpu5wdt.
1453 config SMSC_SCH311X_WDT
1454 tristate "SMSC SCH311X Watchdog Timer"
1457 This is the driver for the hardware watchdog timer on the
1458 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1459 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1462 To compile this driver as a module, choose M here: the
1463 module will be called sch311x_wdt.
1465 config SMSC37B787_WDT
1466 tristate "Winbond SMsC37B787 Watchdog Timer"
1469 This is the driver for the hardware watchdog component on the
1470 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1471 from Vision Systems and maybe others.
1473 This watchdog simply watches your kernel to make sure it doesn't
1474 freeze, and if it does, it reboots your computer after a certain
1477 Usually a userspace daemon will notify the kernel WDT driver that
1478 userspace is still alive, at regular intervals.
1480 To compile this driver as a module, choose M here: the
1481 module will be called smsc37b787_wdt.
1483 Most people will say N.
1486 tristate "TQ-Systems TQMX86 Watchdog Timer"
1488 select WATCHDOG_CORE
1490 This is the driver for the hardware watchdog timer in the TQMX86 IO
1491 controller found on some of their ComExpress Modules.
1493 To compile this driver as a module, choose M here; the module
1494 will be called tqmx86_wdt.
1496 Most people will say N.
1499 tristate "VIA Watchdog Timer"
1500 depends on X86 && PCI
1501 select WATCHDOG_CORE
1503 This is the driver for the hardware watchdog timer on VIA
1504 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1506 To compile this driver as a module, choose M here; the module
1507 will be called via_wdt.
1509 Most people will say N.
1512 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1514 select WATCHDOG_CORE
1516 This is the driver for the hardware watchdog on the following
1518 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1532 This watchdog simply watches your kernel to make sure it doesn't
1533 freeze, and if it does, it reboots your computer after a certain
1536 To compile this driver as a module, choose M here: the
1537 module will be called w83627hf_wdt.
1539 Most people will say N.
1542 tristate "W83877F (EMACS) Watchdog Timer"
1545 This is the driver for the hardware watchdog on the W83877F chipset
1546 as used in EMACS PC-104 motherboards (and likely others). This
1547 watchdog simply watches your kernel to make sure it doesn't freeze,
1548 and if it does, it reboots your computer after a certain amount of
1551 To compile this driver as a module, choose M here: the
1552 module will be called w83877f_wdt.
1554 Most people will say N.
1557 tristate "W83977F (PCM-5335) Watchdog Timer"
1560 This is the driver for the hardware watchdog on the W83977F I/O chip
1561 as used in AAEON's PCM-5335 SBC (and likely others). This
1562 watchdog simply watches your kernel to make sure it doesn't freeze,
1563 and if it does, it reboots your computer after a certain amount of
1566 To compile this driver as a module, choose M here: the
1567 module will be called w83977f_wdt.
1570 tristate "ZF MachZ Watchdog"
1573 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1574 N. This is the driver for the watchdog timer built-in on that
1575 processor using ZF-Logic interface. This watchdog simply watches
1576 your kernel to make sure it doesn't freeze, and if it does, it
1577 reboots your computer after a certain amount of time.
1579 To compile this driver as a module, choose M here: the
1580 module will be called machzwd.
1582 config SBC_EPX_C3_WATCHDOG
1583 tristate "Winsystems SBC EPX-C3 watchdog"
1586 This is the driver for the built-in watchdog timer on the EPX-C3
1587 Single-board computer made by Winsystems, Inc.
1589 *Note*: This hardware watchdog is not probeable and thus there
1590 is no way to know if writing to its IO address will corrupt
1591 your system or have any real effect. The only way to be sure
1592 that this driver does what you want is to make sure you
1593 are running it on an EPX-C3 from Winsystems with the watchdog
1594 timer at IO address 0x1ee and 0x1ef. It will write to both those
1595 IO ports. Basically, the assumption is made that if you compile
1596 this driver into your kernel and/or load it as a module, that you
1597 know what you are doing and that you are in fact running on an
1600 To compile this driver as a module, choose M here: the
1601 module will be called sbc_epx_c3.
1603 config INTEL_MEI_WDT
1604 tristate "Intel MEI iAMT Watchdog"
1605 depends on INTEL_MEI && X86
1606 select WATCHDOG_CORE
1608 A device driver for the Intel MEI iAMT watchdog.
1610 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1611 Whenever the OS hangs or crashes, iAMT will send an event
1612 to any subscriber to this event. The watchdog doesn't reset the
1615 To compile this driver as a module, choose M here:
1616 the module will be called mei_wdt.
1619 tristate "NI 903x/913x Watchdog"
1620 depends on X86 && ACPI
1621 select WATCHDOG_CORE
1623 This is the driver for the watchdog timer on the National Instruments
1624 903x/913x real-time controllers.
1626 To compile this driver as a module, choose M here: the module will be
1630 tristate "NIC7018 Watchdog"
1631 depends on X86 && ACPI
1632 select WATCHDOG_CORE
1634 Support for National Instruments NIC7018 Watchdog.
1636 To compile this driver as a module, choose M here: the module will be
1641 config M54xx_WATCHDOG
1642 tristate "MCF54xx watchdog support"
1645 To compile this driver as a module, choose M here: the
1646 module will be called m54xx_wdt.
1648 # MicroBlaze Architecture
1653 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1654 depends on ATH79 || (ARM && COMPILE_TEST)
1656 Hardware driver for the built-in watchdog timer on the Atheros
1657 AR71XX/AR724X/AR913X SoCs.
1660 tristate "Broadcom BCM47xx Watchdog Timer"
1661 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1662 select WATCHDOG_CORE
1664 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1667 tristate "IDT RC32434 SoC Watchdog Timer"
1668 depends on MIKROTIK_RB532
1670 Hardware driver for the IDT RC32434 SoC built-in
1673 To compile this driver as a module, choose M here: the
1674 module will be called rc32434_wdt.
1677 tristate "Indy/I2 Hardware Watchdog"
1678 depends on SGI_HAS_INDYDOG
1680 Hardware driver for the Indy's/I2's watchdog. This is a
1681 watchdog timer that will reboot the machine after a 60 second
1682 timer expired and no process has written to /dev/watchdog during
1686 tristate "Ingenic jz4740 SoC hardware watchdog"
1688 depends on COMMON_CLK
1689 select WATCHDOG_CORE
1692 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1695 tristate "MTX-1 Hardware Watchdog"
1696 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1698 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1699 will reboot the machine after a 100 seconds timer expired.
1702 tristate "Sibyte SoC hardware watchdog"
1703 depends on CPU_SB1 || (MIPS && COMPILE_TEST)
1705 Watchdog driver for the built in watchdog hardware in Sibyte
1706 SoC processors. There are apparently two watchdog timers
1707 on such processors; this driver supports only the first one,
1708 because currently Linux only supports exporting one watchdog
1711 To compile this driver as a loadable module, choose M here.
1712 The module will be called sb_wdog.
1715 tristate "TI AR7 Watchdog Timer"
1716 depends on AR7 || (MIPS && COMPILE_TEST)
1718 Hardware driver for the TI AR7 Watchdog Timer.
1721 tristate "Toshiba TXx9 Watchdog Timer"
1722 depends on CPU_TX39XX || CPU_TX49XX || (MIPS && COMPILE_TEST)
1723 select WATCHDOG_CORE
1725 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1728 tristate "Cavium OCTEON SOC family Watchdog Timer"
1729 depends on CAVIUM_OCTEON_SOC
1731 select WATCHDOG_CORE
1732 select EXPORT_UASM if OCTEON_WDT = m
1734 Hardware driver for OCTEON's on chip watchdog timer.
1735 Enables the watchdog for all cores running Linux. It
1736 installs a NMI handler and pokes the watchdog based on an
1737 interrupt. On first expiration of the watchdog, the
1738 interrupt handler pokes it. The second expiration causes an
1739 NMI that prints a message. The third expiration causes a
1742 When userspace has /dev/watchdog open, no poking is done
1743 from the first interrupt, it is then only poked when the
1747 tristate "Broadcom BCM63xx hardware watchdog"
1750 Watchdog driver for the built in watchdog hardware in Broadcom
1753 To compile this driver as a loadable module, choose M here.
1754 The module will be called bcm63xx_wdt.
1757 tristate "Broadcom BCM2835 hardware watchdog"
1758 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1759 select WATCHDOG_CORE
1761 Watchdog driver for the built in watchdog hardware in Broadcom
1764 To compile this driver as a loadable module, choose M here.
1765 The module will be called bcm2835_wdt.
1768 tristate "BCM Kona Watchdog"
1769 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1770 select WATCHDOG_CORE
1772 Support for the watchdog timer on the following Broadcom BCM281xx
1773 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1776 Say 'Y' or 'M' here to enable the driver. The module will be called
1779 config BCM_KONA_WDT_DEBUG
1780 bool "DEBUGFS support for BCM Kona Watchdog"
1781 depends on BCM_KONA_WDT
1783 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1784 access to the driver's internal data structures as well as watchdog
1785 timer hardware registres.
1787 If in doubt, say 'N'.
1790 tristate "BCM7038 Watchdog"
1791 select WATCHDOG_CORE
1792 depends on HAS_IOMEM
1793 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
1795 Watchdog driver for the built-in hardware in Broadcom 7038 and
1796 later SoCs used in set-top boxes. BCM7038 was made public
1797 during the 2004 CES, and since then, many Broadcom chips use this
1798 watchdog block, including some cable modem chips.
1801 tristate "Imagination Technologies PDC Watchdog Timer"
1802 depends on HAS_IOMEM
1803 depends on MIPS || COMPILE_TEST
1804 select WATCHDOG_CORE
1806 Driver for Imagination Technologies PowerDown Controller
1809 To compile this driver as a loadable module, choose M here.
1810 The module will be called imgpdc_wdt.
1813 tristate "Lantiq SoC watchdog"
1815 select WATCHDOG_CORE
1817 Hardware driver for the Lantiq SoC Watchdog Timer.
1819 config LOONGSON1_WDT
1820 tristate "Loongson1 SoC hardware watchdog"
1821 depends on MACH_LOONGSON32
1822 select WATCHDOG_CORE
1824 Hardware driver for the Loongson1 SoC Watchdog Timer.
1827 tristate "Ralink SoC watchdog"
1828 select WATCHDOG_CORE
1831 Hardware driver for the Ralink SoC Watchdog Timer.
1834 tristate "Mediatek SoC watchdog"
1835 select WATCHDOG_CORE
1836 depends on SOC_MT7620 || SOC_MT7621
1838 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1841 tristate "Microchip PIC32 hardware watchdog"
1842 select WATCHDOG_CORE
1843 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1845 Watchdog driver for the built in watchdog hardware in a PIC32.
1847 Configuration bits must be set appropriately for the watchdog to be
1848 controlled by this driver.
1850 To compile this driver as a loadable module, choose M here.
1851 The module will be called pic32-wdt.
1854 tristate "Microchip PIC32 Deadman Timer"
1855 select WATCHDOG_CORE
1856 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1858 Watchdog driver for PIC32 instruction fetch counting timer. This specific
1859 timer is typically be used in misson critical and safety critical
1860 applications, where any single failure of the software functionality
1861 and sequencing must be detected.
1863 To compile this driver as a loadable module, choose M here.
1864 The module will be called pic32-dmt.
1866 # PARISC Architecture
1868 # POWERPC Architecture
1871 tristate "GE Watchdog Timer"
1874 Watchdog timer found in a number of GE single board computers.
1877 bool "MPC52xx Watchdog Timer"
1878 depends on PPC_MPC52xx || COMPILE_TEST
1880 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1883 tristate "MPC8xxx Platform Watchdog Timer"
1884 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1885 select WATCHDOG_CORE
1887 This driver is for a SoC level watchdog that exists on some
1888 Freescale PowerPC processors. So far this driver supports:
1893 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1896 tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
1897 depends on MV64X60 || COMPILE_TEST
1900 tristate "PIKA FPGA Watchdog"
1901 depends on WARP || (PPC64 && COMPILE_TEST)
1904 This enables the watchdog in the PIKA FPGA. Currently used on
1908 tristate "PowerPC Book-E Watchdog Timer"
1909 depends on BOOKE || 4xx
1910 select WATCHDOG_CORE
1912 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1913 MPC85xx SOCs and the IBM PowerPC 440.
1915 Please see Documentation/watchdog/watchdog-api.rst for
1918 config BOOKE_WDT_DEFAULT_TIMEOUT
1919 int "PowerPC Book-E Watchdog Timer Default Timeout"
1920 depends on BOOKE_WDT
1921 default 38 if PPC_FSL_BOOK3E
1922 range 0 63 if PPC_FSL_BOOK3E
1923 default 3 if !PPC_FSL_BOOK3E
1924 range 0 3 if !PPC_FSL_BOOK3E
1926 Select the default watchdog timer period to be used by the PowerPC
1927 Book-E watchdog driver. A watchdog "event" occurs when the bit
1928 position represented by this number transitions from zero to one.
1930 For Freescale Book-E processors, this is a number between 0 and 63.
1931 For other Book-E processors, this is a number between 0 and 3.
1933 The value can be overridden by the wdt_period command-line parameter.
1936 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1937 select WATCHDOG_CORE
1938 depends on GPIOLIB || COMPILE_TEST
1940 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1942 The driver can also be built as a module. If so, the module will be
1945 If unsure select N here.
1947 # PPC64 Architecture
1949 config WATCHDOG_RTAS
1950 tristate "RTAS watchdog"
1953 This driver adds watchdog support for the RTAS watchdog.
1955 To compile this driver as a module, choose M here. The module
1956 will be called wdrtas.
1960 config DIAG288_WATCHDOG
1961 tristate "System z diag288 Watchdog"
1963 select WATCHDOG_CORE
1965 IBM s/390 and zSeries machines running under z/VM 5.1 or later
1966 provide a virtual watchdog timer to their guest that cause a
1967 user define Control Program command to be executed after a
1969 LPAR provides a very similar interface. This driver handles
1972 To compile this driver as a module, choose M here. The module
1973 will be called diag288_wdt.
1975 # SUPERH (sh + sh64) Architecture
1978 tristate "SuperH Watchdog"
1979 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
1980 select WATCHDOG_CORE
1982 This driver adds watchdog support for the integrated watchdog in the
1983 SuperH processors. If you have one of these processors and wish
1984 to have watchdog support enabled, say Y, otherwise say N.
1986 As a side note, saying Y here will automatically boost HZ to 1000
1987 so that the timer has a chance to clear the overflow counter. On
1988 slower systems (such as the SH-2 and SH-3) this will likely yield
1989 some performance issues. As such, the WDT should be avoided here
1990 unless it is absolutely necessary.
1992 To compile this driver as a module, choose M here: the
1993 module will be called shwdt.
1995 # SPARC Architecture
1997 # SPARC64 Architecture
1999 config WATCHDOG_CP1XXX
2000 tristate "CP1XXX Hardware Watchdog support"
2001 depends on SPARC64 && PCI
2003 This is the driver for the hardware watchdog timers present on
2004 Sun Microsystems CompactPCI models CP1400 and CP1500.
2006 To compile this driver as a module, choose M here: the
2007 module will be called cpwatchdog.
2009 If you do not have a CompactPCI model CP1400 or CP1500, or
2010 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2011 you should say N to this option.
2014 tristate "RIO Hardware Watchdog support"
2015 depends on SPARC64 && PCI
2017 Say Y here to support the hardware watchdog capability on Sun RIO
2018 machines. The watchdog timeout period is normally one minute but
2019 can be changed with a boot-time parameter.
2021 config WATCHDOG_SUN4V
2022 tristate "Sun4v Watchdog support"
2023 select WATCHDOG_CORE
2026 Say Y here to support the hypervisor watchdog capability embedded
2027 in the SPARC sun4v architecture.
2029 To compile this driver as a module, choose M here. The module will
2030 be called sun4v_wdt.
2032 # XTENSA Architecture
2037 tristate "Xen Watchdog support"
2039 select WATCHDOG_CORE
2041 Say Y here to support the hypervisor watchdog capability provided
2042 by Xen 4.0 and newer. The watchdog timeout period is normally one
2043 minute but can be changed with a boot-time parameter.
2046 tristate "UML watchdog"
2047 depends on UML || COMPILE_TEST
2050 # ISA-based Watchdog Cards
2053 comment "ISA-based Watchdog Cards"
2057 tristate "Berkshire Products ISA-PC Watchdog"
2060 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2061 This card simply watches your kernel to make sure it doesn't freeze,
2062 and if it does, it reboots your computer after a certain amount of
2063 time. This driver is like the WDT501 driver but for different
2064 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>. The PC
2065 watchdog cards can be ordered from <http://www.berkprod.com/>.
2067 To compile this driver as a module, choose M here: the
2068 module will be called pcwd.
2070 Most people will say N.
2073 tristate "Mixcom Watchdog"
2076 This is a driver for the Mixcom hardware watchdog cards. This
2077 watchdog simply watches your kernel to make sure it doesn't freeze,
2078 and if it does, it reboots your computer after a certain amount of
2081 To compile this driver as a module, choose M here: the
2082 module will be called mixcomwd.
2084 Most people will say N.
2087 tristate "WDT Watchdog timer"
2090 If you have a WDT500P or WDT501P watchdog board, say Y here,
2091 otherwise N. It is not possible to probe for this board, which means
2092 that you have to inform the kernel about the IO port and IRQ that
2093 is needed (you can do this via the io and irq parameters)
2095 To compile this driver as a module, choose M here: the
2096 module will be called wdt.
2099 # PCI-based Watchdog Cards
2102 comment "PCI-based Watchdog Cards"
2105 config PCIPCWATCHDOG
2106 tristate "Berkshire Products PCI-PC Watchdog"
2109 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2110 This card simply watches your kernel to make sure it doesn't freeze,
2111 and if it does, it reboots your computer after a certain amount of
2112 time. The card can also monitor the internal temperature of the PC.
2113 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2115 To compile this driver as a module, choose M here: the
2116 module will be called pcwd_pci.
2118 Most people will say N.
2121 tristate "PCI-WDT500/501 Watchdog timer"
2124 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2126 If you have a PCI-WDT501 watchdog board then you can enable the
2127 temperature sensor by setting the type parameter to 501.
2129 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2130 can do this via the tachometer parameter. Only do this if you have a
2131 fan tachometer actually set up.
2133 To compile this driver as a module, choose M here: the
2134 module will be called wdt_pci.
2137 # USB-based Watchdog Cards
2140 comment "USB-based Watchdog Cards"
2143 config USBPCWATCHDOG
2144 tristate "Berkshire Products USB-PC Watchdog"
2147 This is the driver for the Berkshire Products USB-PC Watchdog card.
2148 This card simply watches your kernel to make sure it doesn't freeze,
2149 and if it does, it reboots your computer after a certain amount of
2150 time. The card can also monitor the internal temperature of the PC.
2151 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2153 To compile this driver as a module, choose M here: the
2154 module will be called pcwd_usb.
2156 Most people will say N.