1 # SPDX-License-Identifier: GPL-2.0-only
4 # Watchdog device configuration
8 bool "Watchdog Timer Support"
10 If you say Y here (and to one of the following options) and create a
11 character special file /dev/watchdog with major number 10 and minor
12 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
13 subsequently opening the file and then failing to write to it for
14 longer than 1 minute will result in rebooting the machine. This
15 could be useful for a networked machine that needs to come back
16 on-line as fast as possible after a lock-up. There's both a watchdog
17 implementation entirely in software (which can sometimes fail to
18 reboot the machine) and a driver for hardware watchdog boards, which
19 are more robust and can also keep track of the temperature inside
20 your computer. For details, read
21 <file:Documentation/watchdog/watchdog-api.rst> in the kernel source.
23 The watchdog is usually used together with the watchdog daemon
24 which is available from
25 <https://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon
26 can also monitor NFS connections and can reboot the machine when the
27 process table is full.
34 tristate "WatchDog Timer Driver Core"
36 Say Y here if you want to use the new watchdog timer driver core.
37 This driver provides a framework for all watchdog timer drivers
38 and gives them the /dev/watchdog interface (and later also the
41 config WATCHDOG_NOWAYOUT
42 bool "Disable watchdog shutdown on close"
44 The default watchdog behaviour (which you get if you say N here) is
45 to stop the timer if the process managing it closes the file
46 /dev/watchdog. It's always remotely possible that this process might
47 get killed. If you say Y here, the watchdog cannot be stopped once
50 config WATCHDOG_HANDLE_BOOT_ENABLED
51 bool "Update boot-enabled watchdog until userspace takes over"
54 The default watchdog behaviour (which you get if you say Y here) is
55 to ping watchdog devices that were enabled before the driver has
56 been loaded until control is taken over from userspace using the
57 /dev/watchdog file. If you say N here, the kernel will not update
58 the watchdog on its own. Thus if your userspace does not start fast
59 enough your device will reboot.
61 config WATCHDOG_OPEN_TIMEOUT
62 int "Timeout value for opening watchdog device"
65 The maximum time, in seconds, for which the watchdog framework takes
66 care of pinging a hardware watchdog. A value of 0 means infinite. The
67 value set here can be overridden by the commandline parameter
68 "watchdog.open_timeout".
71 bool "Read different watchdog information through sysfs"
73 Say Y here if you want to enable watchdog device status read through
76 config WATCHDOG_HRTIMER_PRETIMEOUT
77 bool "Enable watchdog hrtimer-based pretimeouts"
79 Enable this if you want to use a hrtimer timer based pretimeout for
80 watchdogs that do not natively support pretimeout support. Be aware
81 that because this pretimeout functionality uses hrtimers, it may not
82 be able to fire before the actual watchdog fires in some situations.
84 comment "Watchdog Pretimeout Governors"
86 config WATCHDOG_PRETIMEOUT_GOV
87 bool "Enable watchdog pretimeout governors"
88 depends on WATCHDOG_CORE
90 The option allows to select watchdog pretimeout governors.
92 config WATCHDOG_PRETIMEOUT_GOV_SEL
94 depends on WATCHDOG_PRETIMEOUT_GOV
96 select WATCHDOG_PRETIMEOUT_GOV_PANIC if WATCHDOG_PRETIMEOUT_GOV_NOOP=n
98 if WATCHDOG_PRETIMEOUT_GOV
100 config WATCHDOG_PRETIMEOUT_GOV_NOOP
101 tristate "Noop watchdog pretimeout governor"
102 depends on WATCHDOG_CORE
103 default WATCHDOG_CORE
105 Noop watchdog pretimeout governor, only an informational
106 message is added to kernel log buffer.
108 config WATCHDOG_PRETIMEOUT_GOV_PANIC
109 tristate "Panic watchdog pretimeout governor"
110 depends on WATCHDOG_CORE
111 default WATCHDOG_CORE
113 Panic watchdog pretimeout governor, on watchdog pretimeout
114 event put the kernel into panic.
117 prompt "Default Watchdog Pretimeout Governor"
118 default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
120 This option selects a default watchdog pretimeout governor.
121 The governor takes its action, if a watchdog is capable
122 to report a pretimeout event.
124 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP
126 depends on WATCHDOG_PRETIMEOUT_GOV_NOOP
128 Use noop watchdog pretimeout governor by default. If noop
129 governor is selected by a user, write a short message to
130 the kernel log buffer and don't do any system changes.
132 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
134 depends on WATCHDOG_PRETIMEOUT_GOV_PANIC
136 Use panic watchdog pretimeout governor by default, if
137 a watchdog pretimeout event happens, consider that
138 a watchdog feeder is dead and reboot is unavoidable.
142 endif # WATCHDOG_PRETIMEOUT_GOV
145 # General Watchdog drivers
148 comment "Watchdog Device Drivers"
150 # Architecture Independent
153 tristate "Software watchdog"
156 A software monitoring watchdog. This will fail to reboot your system
157 from some situations that the hardware watchdog will recover
158 from. Equally it's a lot cheaper to install.
160 To compile this driver as a module, choose M here: the
161 module will be called softdog.
163 config SOFT_WATCHDOG_PRETIMEOUT
164 bool "Software watchdog pretimeout governor support"
165 depends on SOFT_WATCHDOG && WATCHDOG_PRETIMEOUT_GOV
167 Enable this if you want to use pretimeout governors with the software
168 watchdog. Be aware that governors might affect the watchdog because it
169 is purely software, e.g. the panic governor will stall it!
171 config BD957XMUF_WATCHDOG
172 tristate "ROHM BD9576MUF and BD9573MUF PMIC Watchdog"
173 depends on MFD_ROHM_BD957XMUF
176 Support for the watchdog in the ROHM BD9576 and BD9573 PMICs.
177 These PMIC ICs contain watchdog block which can be configured
178 to toggle reset line if SoC fails to ping watchdog via GPIO.
180 Say Y here to include support for the ROHM BD9576 or BD9573
181 watchdog. Alternatively say M to compile the driver as a module,
182 which will be called bd9576_wdt.
184 config BD96801_WATCHDOG
185 tristate "ROHM BD96801 PMIC Watchdog"
186 depends on MFD_ROHM_BD96801
189 Support for the watchdog in the ROHM BD96801 PMIC. Watchdog can be
190 configured to only generate IRQ or to trigger system reset via reset
193 Say Y here to include support for the ROHM BD96801 watchdog.
194 Alternatively say M to compile the driver as a module,
195 which will be called bd96801_wdt.
197 config CROS_EC_WATCHDOG
198 tristate "ChromeOS EC-based watchdog"
202 Watchdog driver for Chromebook devices equipped with embedded controller.
203 Trigger event is recorded in EC and checked on the subsequent boot.
205 To compile this driver as a module, choose M here: the
206 module will be called cros_ec_wdt.
208 config DA9052_WATCHDOG
209 tristate "Dialog DA9052 Watchdog"
210 depends on PMIC_DA9052 || COMPILE_TEST
213 Support for the watchdog in the DA9052 PMIC. Watchdog trigger
216 Say Y here to include support for the DA9052 watchdog.
217 Alternatively say M to compile the driver as a module,
218 which will be called da9052_wdt.
220 config DA9055_WATCHDOG
221 tristate "Dialog Semiconductor DA9055 Watchdog"
222 depends on MFD_DA9055 || COMPILE_TEST
225 If you say yes here you get support for watchdog on the Dialog
226 Semiconductor DA9055 PMIC.
228 This driver can also be built as a module. If so, the module
229 will be called da9055_wdt.
231 config DA9063_WATCHDOG
232 tristate "Dialog DA9063 Watchdog"
233 depends on MFD_DA9063 || COMPILE_TEST
237 Support for the watchdog in the DA9063 PMIC.
239 This driver can be built as a module. The module name is da9063_wdt.
241 config DA9062_WATCHDOG
242 tristate "Dialog DA9062/61 Watchdog"
243 depends on MFD_DA9062 || COMPILE_TEST
247 Support for the watchdog in the DA9062 and DA9061 PMICs.
249 This driver can be built as a module. The module name is da9062_wdt.
252 tristate "Watchdog device controlled through GPIO-line"
256 If you say yes here you get support for watchdog device
257 controlled through GPIO-line.
259 config GPIO_WATCHDOG_ARCH_INITCALL
260 bool "Register the watchdog as early as possible"
261 depends on GPIO_WATCHDOG=y
263 In some situations, the default initcall level (module_init)
264 in not early enough in the boot process to avoid the watchdog
266 If you say yes here, the initcall level would be raised to
270 config LENOVO_SE10_WDT
271 tristate "Lenovo SE10 Watchdog"
272 depends on (X86 && DMI) || COMPILE_TEST
273 depends on HAS_IOPORT
276 If you say yes here you get support for the watchdog
277 functionality for the Lenovo SE10 platform.
279 This driver can also be built as a module. If so, the module
280 will be called lenovo-se10-wdt.
282 config MENF21BMC_WATCHDOG
283 tristate "MEN 14F021P00 BMC Watchdog"
284 depends on MFD_MENF21BMC || COMPILE_TEST
288 Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
290 This driver can also be built as a module. If so the module
291 will be called menf21bmc_wdt.
293 config MENZ069_WATCHDOG
294 tristate "MEN 16Z069 Watchdog"
298 Say Y here to include support for the MEN 16Z069 Watchdog.
300 This driver can also be built as a module. If so the module
301 will be called menz069_wdt.
304 tristate "ACPI Watchdog Action Table (WDAT)"
309 This driver adds support for systems with ACPI Watchdog Action
310 Table (WDAT) table. Servers typically have this but it can be
311 found on some desktop machines as well. This driver will take
312 over the native iTCO watchdog driver found on many Intel CPUs.
314 To compile this driver as module, choose M here: the module will
317 config WM831X_WATCHDOG
318 tristate "WM831x watchdog"
319 depends on MFD_WM831X
322 Support for the watchdog in the WM831x AudioPlus PMICs. When
323 the watchdog triggers the system will be reset.
325 config WM8350_WATCHDOG
326 tristate "WM8350 watchdog"
327 depends on MFD_WM8350
330 Support for the watchdog in the WM8350 AudioPlus PMIC. When
331 the watchdog triggers the system will be reset.
333 config XILINX_WATCHDOG
334 tristate "Xilinx Watchdog timer"
338 Watchdog driver for the xps_timebase_wdt IP core.
340 To compile this driver as a module, choose M here: the
341 module will be called of_xilinx_wdt.
343 config XILINX_WINDOW_WATCHDOG
344 tristate "Xilinx window watchdog timer"
346 depends on ARM64 || COMPILE_TEST
349 Window watchdog driver for the versal_wwdt IP core.
350 Window watchdog timer(WWDT) contains closed(first) and
351 open(second) window with 32 bit width. Write to the watchdog
352 timer within predefined window periods of time. This means
353 a period that is not too soon and a period that is not too
354 late. The WWDT has to be restarted within the open window time.
355 If software tries to restart WWDT outside of the open window
356 time period, it generates a reset.
358 To compile this driver as a module, choose M here: the
359 module will be called xilinx_wwdt.
361 config ZIIRAVE_WATCHDOG
362 tristate "Zodiac RAVE Watchdog Timer"
366 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
369 To compile this driver as a module, choose M here: the
370 module will be called ziirave_wdt.
372 config RAVE_SP_WATCHDOG
373 tristate "RAVE SP Watchdog timer"
374 depends on RAVE_SP_CORE
375 depends on NVMEM || !NVMEM
378 Support for the watchdog on RAVE SP device.
381 tristate "Mellanox Watchdog"
382 depends on MELLANOX_PLATFORM || COMPILE_TEST
386 This is the driver for the hardware watchdog on Mellanox systems.
387 If you are going to use it, say Y here, otherwise N.
388 This driver can be used together with the watchdog daemon.
389 It can also watch your kernel to make sure it doesn't freeze,
390 and if it does, it reboots your system after a certain amount of
393 To compile this driver as a module, choose M here: the
394 module will be called mlx-wdt.
396 config SL28CPLD_WATCHDOG
397 tristate "Kontron sl28cpld Watchdog"
398 depends on MFD_SL28CPLD || COMPILE_TEST
401 Say Y here to include support for the watchdog timer
402 on the Kontron sl28 CPLD.
404 To compile this driver as a module, choose M here: the
405 module will be called sl28cpld_wdt.
411 config ARM_SP805_WATCHDOG
412 tristate "ARM SP805 Watchdog"
413 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
416 ARM Primecell SP805 Watchdog timer. This will reboot your system when
417 the timeout is reached.
419 config ARM_SBSA_WATCHDOG
420 tristate "ARM SBSA Generic Watchdog"
422 depends on ARM_ARCH_TIMER
425 ARM SBSA Generic Watchdog has two stage timeouts:
426 the first signal (WS0) is for alerting the system by interrupt,
427 the second one (WS1) is a real hardware reset.
428 More details: ARM DEN0029B - Server Base System Architecture (SBSA)
430 This driver can operate ARM SBSA Generic Watchdog as a single stage
431 or a two stages watchdog, it depends on the module parameter "action".
433 Note: the maximum timeout in the two stages mode is half of that in
434 the single stage mode.
436 To compile this driver as module, choose M here: The module
437 will be called sbsa_gwdt.
439 config ARMADA_37XX_WATCHDOG
440 tristate "Armada 37xx watchdog"
441 depends on ARCH_MVEBU || COMPILE_TEST
446 Say Y here to include support for the watchdog timer found on
447 Marvell Armada 37xx SoCs.
448 To compile this driver as a module, choose M here: the
449 module will be called armada_37xx_wdt.
451 config ASM9260_WATCHDOG
452 tristate "Alphascale ASM9260 watchdog"
453 depends on MACH_ASM9260 || COMPILE_TEST
456 select RESET_CONTROLLER
458 Watchdog timer embedded into Alphascale asm9260 chips. This will
459 reboot your system when the timeout is reached.
461 config AT91RM9200_WATCHDOG
462 tristate "AT91RM9200 watchdog"
463 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
465 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
466 system when the timeout is reached.
468 config AT91SAM9X_WATCHDOG
469 tristate "AT91SAM9X / AT91CAP9 watchdog"
470 depends on ARCH_AT91 || COMPILE_TEST
473 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
474 reboot your system when the timeout is reached.
476 config SAMA5D4_WATCHDOG
477 tristate "Atmel SAMA5D4 Watchdog Timer"
478 depends on ARCH_AT91 || COMPILE_TEST
481 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
482 Its Watchdog Timer Mode Register can be written more than once.
483 This will reboot your system when the timeout is reached.
485 config CADENCE_WATCHDOG
486 tristate "Cadence Watchdog Timer"
490 Say Y here if you want to include support for the watchdog
491 timer in the Xilinx Zynq.
493 config 21285_WATCHDOG
494 tristate "DC21285 watchdog"
495 depends on FOOTBRIDGE
497 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
498 here if you wish to use this. Alternatively say M to compile the
499 driver as a module, which will be called wdt285.
501 This driver does not work on all machines. In particular, early CATS
502 boards have hardware problems that will cause the machine to simply
503 lock up if the watchdog fires.
505 "If in doubt, leave it out" - say N.
508 tristate "NetWinder WB83C977 watchdog"
509 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
510 depends on HAS_IOPORT
512 Say Y here to include support for the WB977 watchdog included in
513 NetWinder machines. Alternatively say M to compile the driver as
514 a module, which will be called wdt977.
516 Not sure? It's safe to say N.
518 config FTWDT010_WATCHDOG
519 tristate "Faraday Technology FTWDT010 watchdog"
520 depends on ARM || COMPILE_TEST
524 Say Y here if to include support for the Faraday Technology
525 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
528 To compile this driver as a module, choose M here: the
529 module will be called ftwdt010_wdt.
531 config IXP4XX_WATCHDOG
532 tristate "IXP4xx Watchdog"
533 depends on ARCH_IXP4XX || (ARM && COMPILE_TEST)
536 Say Y here if to include support for the watchdog timer
537 in the Intel IXP4xx network processors. This driver can
538 be built as a module by choosing M. The module will
539 be called ixp4xx_wdt.
541 Note: The internal IXP4xx watchdog does a soft CPU reset
542 which doesn't reset any peripherals. There are circumstances
543 where the watchdog will fail to reset the board correctly
544 (e.g., if the boot ROM is in an unreadable state).
546 Say N if you are unsure.
548 config S3C2410_WATCHDOG
549 tristate "S3C6410/S5Pv210/Exynos Watchdog"
550 depends on ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
553 Watchdog timer block in the Samsung S3C64xx, S5Pv210 and Exynos
554 SoCs. This will reboot the system when the timer expires with
555 the watchdog enabled.
557 The driver is limited by the speed of the system's PCLK
558 signal, so with reasonably fast systems (PCLK around 50-66MHz)
559 then watchdog intervals of over approximately 20seconds are
562 Choose Y/M here only if you build for such Samsung SoC.
563 The driver can be built as a module by choosing M, and will
564 be called s3c2410_wdt.
566 config SA1100_WATCHDOG
567 tristate "SA1100/PXA2xx watchdog"
568 depends on ARCH_SA1100 || ARCH_PXA || COMPILE_TEST
570 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
571 reboot your system when timeout is reached.
573 NOTE: once enabled, this timer cannot be disabled.
575 To compile this driver as a module, choose M here: the
576 module will be called sa1100_wdt.
579 tristate "Synopsys DesignWare watchdog"
583 Say Y here if to include support for the Synopsys DesignWare
584 watchdog timer found in many chips.
585 To compile this driver as a module, choose M here: the
586 module will be called dw_wdt.
588 config EP93XX_WATCHDOG
589 tristate "EP93xx Watchdog"
590 depends on ARCH_EP93XX || COMPILE_TEST
593 Say Y here if to include support for the watchdog timer
594 embedded in the Cirrus Logic EP93xx family of devices.
596 To compile this driver as a module, choose M here: the
597 module will be called ep93xx_wdt.
600 tristate "OMAP Watchdog"
601 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
604 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog.
605 Say 'Y' here to enable the
606 OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
608 config PNX4008_WATCHDOG
609 tristate "LPC32XX Watchdog"
610 depends on ARCH_LPC32XX || COMPILE_TEST
613 Say Y here if to include support for the watchdog timer
614 in the LPC32XX processor.
615 This driver can be built as a module by choosing M. The module
616 will be called pnx4008_wdt.
618 Say N if you are unsure.
620 config DAVINCI_WATCHDOG
621 tristate "DaVinci watchdog"
622 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
625 Say Y here if to include support for the watchdog timer
626 in the DaVinci DM644x/DM646x or Keystone processors.
627 To compile this driver as a module, choose M here: the
628 module will be called davinci_wdt.
630 NOTE: once enabled, this timer cannot be disabled.
631 Say N if you are unsure.
633 config K3_RTI_WATCHDOG
634 tristate "Texas Instruments K3 RTI watchdog"
635 depends on ARCH_K3 || COMPILE_TEST
638 Say Y here if you want to include support for the K3 watchdog
639 timer (RTI module) available in the K3 generation of processors.
641 config ORION_WATCHDOG
642 tristate "Orion watchdog"
643 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || COMPILE_TEST
647 Say Y here if to include support for the watchdog timer
648 in the Marvell Orion5x and Kirkwood ARM SoCs.
649 To compile this driver as a module, choose M here: the
650 module will be called orion_wdt.
652 config RN5T618_WATCHDOG
653 tristate "Ricoh RN5T618 watchdog"
654 depends on MFD_RN5T618 || COMPILE_TEST
657 If you say yes here you get support for watchdog on the Ricoh
660 This driver can also be built as a module. If so, the module
661 will be called rn5t618_wdt.
663 config SUNXI_WATCHDOG
664 tristate "Allwinner SoCs watchdog support"
665 depends on ARCH_SUNXI || COMPILE_TEST
668 Say Y here to include support for the watchdog timer
670 To compile this driver as a module, choose M here: the
671 module will be called sunxi_wdt.
673 config NPCM7XX_WATCHDOG
674 tristate "Nuvoton NPCM750 watchdog"
675 depends on ARCH_NPCM || COMPILE_TEST
676 default y if ARCH_NPCM7XX
679 Say Y here to include Watchdog timer support for the
680 watchdog embedded into the NPCM7xx.
681 This watchdog is used to reset the system and thus cannot be
682 compiled as a module.
684 config TWL4030_WATCHDOG
685 tristate "TWL4030 Watchdog"
686 depends on TWL4030_CORE
689 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
690 watchdog timer support for TWL4030 chips.
692 config STMP3XXX_RTC_WATCHDOG
693 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
694 depends on RTC_DRV_STMP || COMPILE_TEST
697 Say Y here to include support for the watchdog timer inside
698 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
699 To compile this driver as a module, choose M here: the
700 module will be called stmp3xxx_rtc_wdt.
702 config TS4800_WATCHDOG
703 tristate "TS-4800 Watchdog"
704 depends on HAS_IOMEM && OF
705 depends on SOC_IMX51 || COMPILE_TEST
709 Technologic Systems TS-4800 has watchdog timer implemented in
710 an external FPGA. Say Y here if you want to support for the
711 watchdog timer on TS-4800 board.
713 config TS72XX_WATCHDOG
714 tristate "TS-72XX SBC Watchdog"
715 depends on MACH_TS72XX || COMPILE_TEST
718 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
719 watchdog timer implemented in a external CPLD chip. Say Y here
720 if you want to support for the watchdog timer on TS-72XX boards.
722 To compile this driver as a module, choose M here: the
723 module will be called ts72xx_wdt.
725 config MAX63XX_WATCHDOG
726 tristate "Max63xx watchdog"
730 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
732 config MAX77620_WATCHDOG
733 tristate "Maxim Max77620 Watchdog Timer"
734 depends on MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST
737 This is the driver for the Max77620 watchdog timer.
738 Say 'Y' here to enable the watchdog timer support for
739 MAX77620 chips. To compile this driver as a module,
740 choose M here: the module will be called max77620_wdt.
743 tristate "IMX2+ Watchdog"
744 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
748 This is the driver for the hardware watchdog
749 on the Freescale IMX2 and later processors.
750 If you have one of these processors and wish to have
751 watchdog support enabled, say Y, otherwise say N.
753 To compile this driver as a module, choose M here: the
754 module will be called imx2_wdt.
757 tristate "IMX SC Watchdog"
758 depends on HAVE_ARM_SMCCC
759 depends on IMX_SCU || COMPILE_TEST
762 This is the driver for the system controller watchdog
763 on the NXP i.MX SoCs with system controller inside, the
764 watchdog driver will call ARM SMC API and trap into
765 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
766 will request system controller to execute the operations.
767 If you have one of these processors and wish to have
768 watchdog support enabled, say Y, otherwise say N.
770 To compile this driver as a module, choose M here: the
771 module will be called imx_sc_wdt.
774 tristate "IMX7ULP Watchdog"
775 depends on ARCH_MXC || COMPILE_TEST
778 This is the driver for the hardware watchdog on the Freescale
779 IMX7ULP and later processors. If you have one of these
780 processors and wish to have watchdog support enabled,
781 say Y, otherwise say N.
783 To compile this driver as a module, choose M here: the
784 module will be called imx7ulp_wdt.
786 config DB500_WATCHDOG
787 tristate "ST-Ericsson DB800 watchdog"
788 depends on MFD_DB8500_PRCMU
792 Say Y here to include Watchdog timer support for the watchdog
793 existing in the prcmu of ST-Ericsson DB8500 platform.
795 To compile this driver as a module, choose M here: the
796 module will be called db500_wdt.
799 tristate "Retu watchdog"
803 Retu watchdog driver for Nokia Internet Tablets (770, N800,
804 N810). At least on N800 the watchdog cannot be disabled, so
805 this driver is essential and you should enable it.
807 To compile this driver as a module, choose M here: the
808 module will be called retu_wdt.
811 tristate "MOXART watchdog"
812 depends on ARCH_MOXART || COMPILE_TEST
814 Say Y here to include Watchdog timer support for the watchdog
815 existing on the MOXA ART SoC series platforms.
817 To compile this driver as a module, choose M here: the
818 module will be called moxart_wdt.
820 config ST_LPC_WATCHDOG
821 tristate "STMicroelectronics LPC Watchdog"
822 depends on ARCH_STI || COMPILE_TEST
826 Say Y here to include STMicroelectronics Low Power Controller
827 (LPC) based Watchdog timer support.
829 To compile this driver as a module, choose M here: the
830 module will be called st_lpc_wdt.
832 config TEGRA_WATCHDOG
833 tristate "Tegra watchdog"
834 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
837 Say Y here to include support for the watchdog timer
838 embedded in NVIDIA Tegra SoCs.
840 To compile this driver as a module, choose M here: the
841 module will be called tegra_wdt.
844 tristate "QCOM watchdog"
846 depends on ARCH_QCOM || COMPILE_TEST
849 Say Y here to include Watchdog timer support for the watchdog found
850 on QCOM chipsets. Currently supported targets are the MSM8960,
851 APQ8064, and IPQ8064.
853 To compile this driver as a module, choose M here: the
854 module will be called qcom_wdt.
856 config MESON_GXBB_WATCHDOG
857 tristate "Amlogic Meson GXBB SoCs watchdog support"
858 depends on ARCH_MESON || COMPILE_TEST
861 Say Y here to include support for the watchdog timer
862 in Amlogic Meson GXBB SoCs.
863 To compile this driver as a module, choose M here: the
864 module will be called meson_gxbb_wdt.
866 config MESON_WATCHDOG
867 tristate "Amlogic Meson SoCs watchdog support"
868 depends on ARCH_MESON || COMPILE_TEST
871 Say Y here to include support for the watchdog timer
872 in Amlogic Meson SoCs.
873 To compile this driver as a module, choose M here: the
874 module will be called meson_wdt.
876 config MEDIATEK_WATCHDOG
877 tristate "Mediatek SoCs watchdog support"
878 depends on ARCH_MEDIATEK || COMPILE_TEST
879 default ARCH_MEDIATEK
881 select RESET_CONTROLLER
883 Say Y here to include support for the watchdog timer
885 To compile this driver as a module, choose M here: the
886 module will be called mtk_wdt.
888 config DIGICOLOR_WATCHDOG
889 tristate "Conexant Digicolor SoCs watchdog support"
890 depends on ARCH_DIGICOLOR || COMPILE_TEST
893 Say Y here to include support for the watchdog timer
894 in Conexant Digicolor SoCs.
895 To compile this driver as a module, choose M here: the
896 module will be called digicolor_wdt.
898 config ARM_SMC_WATCHDOG
899 tristate "ARM Secure Monitor Call based watchdog support"
900 depends on ARM || ARM64
902 depends on HAVE_ARM_SMCCC
905 Say Y here to include support for a watchdog timer
906 implemented by the EL3 Secure Monitor on ARM platforms.
907 Requires firmware support.
908 To compile this driver as a module, choose M here: the
909 module will be called arm_smc_wdt.
911 config LPC18XX_WATCHDOG
912 tristate "LPC18xx/43xx Watchdog"
913 depends on ARCH_LPC18XX || COMPILE_TEST
917 Say Y here if to include support for the watchdog timer
918 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
920 To compile this driver as a module, choose M here: the
921 module will be called lpc18xx_wdt.
924 tristate "Renesas WDT Watchdog"
925 depends on ARCH_RENESAS || COMPILE_TEST
928 This driver adds watchdog support for the integrated watchdogs in the
929 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
931 config RENESAS_RZAWDT
932 tristate "Renesas RZ/A WDT Watchdog"
933 depends on ARCH_RENESAS || COMPILE_TEST
936 This driver adds watchdog support for the integrated watchdogs in the
937 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
939 config RENESAS_RZN1WDT
940 tristate "Renesas RZ/N1 watchdog"
941 depends on ARCH_RENESAS || COMPILE_TEST
944 This driver adds watchdog support for the integrated watchdogs in the
945 Renesas RZ/N1 SoCs. These watchdogs can be used to reset a system.
947 config RENESAS_RZG2LWDT
948 tristate "Renesas RZ/G2L WDT Watchdog"
949 depends on ARCH_RZG2L || ARCH_R9A09G011 || COMPILE_TEST
950 depends on PM || COMPILE_TEST
953 This driver adds watchdog support for the integrated watchdogs in the
954 Renesas RZ/G2L SoCs. These watchdogs can be used to reset a system.
956 config ASPEED_WATCHDOG
957 tristate "Aspeed BMC watchdog support"
958 depends on ARCH_ASPEED || COMPILE_TEST
961 Say Y here to include support for the watchdog timer
964 This driver is required to reboot the SoC.
966 To compile this driver as a module, choose M here: the
967 module will be called aspeed_wdt.
969 config STM32_WATCHDOG
970 tristate "STM32 Independent WatchDoG (IWDG) support"
971 depends on ARCH_STM32 || COMPILE_TEST
975 Say Y here to include support for the watchdog timer
978 To compile this driver as a module, choose M here: the
979 module will be called stm32_iwdg.
981 config STPMIC1_WATCHDOG
982 tristate "STPMIC1 PMIC watchdog support"
983 depends on MFD_STPMIC1
986 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
987 If the watchdog timer expires, stpmic1 will shut down all its power
990 To compile this driver as a module, choose M here: the
991 module will be called spmic1_wdt.
993 config UNIPHIER_WATCHDOG
994 tristate "UniPhier watchdog support"
995 depends on ARCH_UNIPHIER || COMPILE_TEST
996 depends on OF && MFD_SYSCON
999 Say Y here to include support watchdog timer embedded
1000 into the UniPhier system.
1002 To compile this driver as a module, choose M here: the
1003 module will be called uniphier_wdt.
1005 config RTD119X_WATCHDOG
1006 bool "Realtek RTD119x/RTD129x watchdog support"
1007 depends on ARCH_REALTEK || COMPILE_TEST
1009 select WATCHDOG_CORE
1010 default ARCH_REALTEK
1012 Say Y here to include support for the watchdog timer in
1013 Realtek RTD1295 SoCs.
1015 config REALTEK_OTTO_WDT
1016 tristate "Realtek Otto MIPS watchdog support"
1017 depends on MACH_REALTEK_RTL || COMPILE_TEST
1018 depends on COMMON_CLK
1019 select WATCHDOG_CORE
1020 default MACH_REALTEK_RTL
1022 Say Y here to include support for the watchdog timer on Realtek
1023 RTL838x, RTL839x, RTL930x SoCs. This watchdog has pretimeout
1024 notifications and system reset on timeout.
1026 When built as a module this will be called realtek_otto_wdt.
1028 config SPRD_WATCHDOG
1029 tristate "Spreadtrum watchdog support"
1030 depends on ARCH_SPRD || COMPILE_TEST
1031 select WATCHDOG_CORE
1033 Say Y here to include watchdog timer supported
1034 by Spreadtrum system.
1036 config PM8916_WATCHDOG
1037 tristate "QCOM PM8916 pmic watchdog"
1038 depends on OF && MFD_SPMI_PMIC
1039 select WATCHDOG_CORE
1041 Say Y here to include support watchdog timer embedded into the
1044 config VISCONTI_WATCHDOG
1045 tristate "Toshiba Visconti series watchdog support"
1046 depends on ARCH_VISCONTI || COMPILE_TEST
1047 select WATCHDOG_CORE
1049 Say Y here to include support for the watchdog timer in Toshiba
1052 config MSC313E_WATCHDOG
1053 tristate "MStar MSC313e watchdog"
1054 depends on ARCH_MSTARV7 || COMPILE_TEST
1055 select WATCHDOG_CORE
1057 Say Y here to include support for the Watchdog timer embedded
1058 into MStar MSC313e chips. This will reboot your system when the
1061 To compile this driver as a module, choose M here: the
1062 module will be called msc313e_wdt.
1064 config APPLE_WATCHDOG
1065 tristate "Apple SoC watchdog"
1066 depends on ARCH_APPLE || COMPILE_TEST
1067 select WATCHDOG_CORE
1069 Say Y here to include support for the Watchdog found in Apple
1070 SoCs such as the M1. Next to the common watchdog features this
1071 driver is also required in order to reboot these SoCs.
1073 To compile this driver as a module, choose M here: the
1074 module will be called apple_wdt.
1076 config SUNPLUS_WATCHDOG
1077 tristate "Sunplus watchdog support"
1078 depends on ARCH_SUNPLUS || COMPILE_TEST
1079 select WATCHDOG_CORE
1081 Say Y here to include support for the watchdog timer
1084 To compile this driver as a module, choose M here: the
1085 module will be called sunplus_wdt.
1087 # X86 (i386 + ia64 + x86_64) Architecture
1090 tristate "Acquire SBC Watchdog Timer"
1093 This is the driver for the hardware watchdog on Single Board
1094 Computers produced by Acquire Inc (and others). This watchdog
1095 simply watches your kernel to make sure it doesn't freeze, and if
1096 it does, it reboots your computer after a certain amount of time.
1098 To compile this driver as a module, choose M here: the
1099 module will be called acquirewdt.
1101 Most people will say N.
1103 config ADVANTECH_WDT
1104 tristate "Advantech SBC Watchdog Timer"
1105 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1107 If you are configuring a Linux kernel for the Advantech single-board
1108 computer, say `Y' here to support its built-in watchdog timer
1109 feature. More information can be found at
1110 <https://www.advantech.com.tw/products/>
1112 config ADVANTECH_EC_WDT
1113 tristate "Advantech Embedded Controller Watchdog Timer"
1114 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1116 select WATCHDOG_CORE
1118 This driver supports Advantech products with ITE based Embedded Controller.
1119 It does not support Advantech products with other ECs or without EC.
1122 tristate "ALi M1535 PMU Watchdog Timer"
1123 depends on (X86 || COMPILE_TEST) && PCI
1125 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1127 To compile this driver as a module, choose M here: the
1128 module will be called alim1535_wdt.
1130 Most people will say N.
1133 tristate "ALi M7101 PMU Computer Watchdog"
1136 This is the driver for the hardware watchdog on the ALi M7101 PMU
1137 as used in the x86 Cobalt servers and also found in some
1138 SPARC Netra servers too.
1140 To compile this driver as a module, choose M here: the
1141 module will be called alim7101_wdt.
1143 Most people will say N.
1146 tristate "WinSystems EBC-C384 Watchdog Timer"
1147 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1149 select WATCHDOG_CORE
1151 Enables watchdog timer support for the watchdog timer on the
1152 WinSystems EBC-C384 motherboard. The timeout may be configured via
1153 the timeout module parameter.
1156 tristate "Exar Watchdog Timer"
1157 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1158 select WATCHDOG_CORE
1160 Enables watchdog timer support for the watchdog timer present
1161 in some Exar/MaxLinear UART chips like the XR28V38x.
1163 To compile this driver as a module, choose M here: the
1164 module will be called exar_wdt.
1167 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1168 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1169 select WATCHDOG_CORE
1171 This is the driver for the hardware watchdog on the Fintek F71808E,
1172 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1173 F81866 Super I/O controllers.
1175 You can compile this driver directly into the kernel, or use
1176 it as a module. The module will be called f71808e_wdt.
1179 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1180 depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1181 select WATCHDOG_CORE
1183 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1184 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1185 the machine after its expiration. The expiration time can be
1186 configured with the "heartbeat" parameter.
1188 To compile this driver as a module, choose M here: the
1189 module will be called sp5100_tco.
1192 tristate "AMD Geode CS5535/CS5536 Watchdog"
1193 depends on CS5535_MFGPT
1195 This driver enables a watchdog capability built into the
1196 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1197 processors. This watchdog watches your kernel to make sure
1198 it doesn't freeze, and if it does, it reboots your computer after
1199 a certain amount of time.
1201 You can compile this driver directly into the kernel, or use
1202 it as a module. The module will be called geodewdt.
1205 tristate "AMD Elan SC520 processor Watchdog"
1206 depends on MELAN || COMPILE_TEST
1208 This is the driver for the hardware watchdog built in to the
1209 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1210 This watchdog simply watches your kernel to make sure it doesn't
1211 freeze, and if it does, it reboots your computer after a certain
1214 You can compile this driver directly into the kernel, or use
1215 it as a module. The module will be called sc520_wdt.
1217 config SBC_FITPC2_WATCHDOG
1218 tristate "Compulab SBC-FITPC2 watchdog"
1219 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1221 This is the driver for the built-in watchdog timer on the fit-PC2,
1222 fit-PC2i, CM-iAM single-board computers made by Compulab.
1224 It's possible to enable the watchdog timer either from BIOS (F2) or
1226 When the "Watchdog Timer Value" is enabled one can set 31-255 seconds
1229 Entering BIOS setup temporarily disables watchdog operation regardless
1230 of current state, so system will not be restarted while user is in
1233 Once the watchdog is enabled the system will be restarted every
1234 "Watchdog Timer Value" period, so to prevent it user can restart or
1235 disable the watchdog.
1237 To compile this driver as a module, choose M here: the
1238 module will be called sbc_fitpc2_wdt.
1240 Most people will say N.
1243 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1244 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1246 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1247 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1248 information are at <http://www.eurotech.it/>.
1251 tristate "IB700 SBC Watchdog Timer"
1252 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1254 This is the driver for the hardware watchdog on the IB700 Single
1255 Board Computer produced by TMC Technology (www.tmc-uk.com). This
1256 watchdog simply watches your kernel to make sure it doesn't freeze,
1257 and if it does, it reboots your computer after a certain amount of time.
1259 This driver is like the WDT501 driver but for slightly different
1262 To compile this driver as a module, choose M here: the
1263 module will be called ib700wdt.
1265 Most people will say N.
1268 tristate "IBM Automatic Server Restart"
1269 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1271 This is the driver for the IBM Automatic Server Restart watchdog
1272 timer built-in into some eServer xSeries machines.
1274 To compile this driver as a module, choose M here: the
1275 module will be called ibmasr.
1278 tristate "ICP Single Board Computer Watchdog Timer"
1279 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1281 This is a driver for the hardware watchdog on the ICP Single
1282 Board Computer. This driver is working on (at least) the following
1283 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1285 To compile this driver as a module, choose M here: the
1286 module will be called wafer5823wdt.
1289 tristate "Intel 6300ESB Timer/Watchdog"
1291 select WATCHDOG_CORE
1293 Hardware driver for the watchdog timer built into the Intel
1294 6300ESB controller hub.
1296 To compile this driver as a module, choose M here: the
1297 module will be called i6300esb.
1300 tristate "Intel Atom E6xx Watchdog"
1301 depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1302 select WATCHDOG_CORE
1306 Hardware driver for the watchdog timer built into the Intel
1307 Atom E6XX (TunnelCreek) processor.
1309 To compile this driver as a module, choose M here: the
1310 module will be called ie6xx_wdt.
1312 config INTEL_MID_WATCHDOG
1313 tristate "Intel MID Watchdog Timer"
1314 depends on X86_INTEL_MID
1315 select WATCHDOG_CORE
1317 Watchdog timer driver built into the Intel SCU for Intel MID
1320 This driver currently supports only the watchdog evolution
1321 implementation in SCU, available for Merrifield generation.
1323 To compile this driver as a module, choose M here.
1326 tristate "Intel TCO Timer/Watchdog"
1327 depends on X86 && PCI
1328 select WATCHDOG_CORE
1329 depends on I2C || I2C=n
1330 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1331 depends on HAS_IOPORT # for I2C_I801
1332 select LPC_ICH if !EXPERT
1333 select I2C_I801 if !EXPERT && I2C
1335 Hardware driver for the intel TCO timer based watchdog devices.
1336 These drivers are included in the Intel 82801 I/O Controller
1337 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1340 The TCO (Total Cost of Ownership) timer is a watchdog timer
1341 that will reboot the machine after its second expiration. The
1342 expiration time can be configured with the "heartbeat" parameter.
1344 On some motherboards the driver may fail to reset the chipset's
1345 NO_REBOOT flag which prevents the watchdog from rebooting the
1346 machine. If this is the case you will get a kernel message like
1347 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1349 To compile this driver as a module, choose M here: the
1350 module will be called iTCO_wdt.
1352 config ITCO_VENDOR_SUPPORT
1353 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1356 Add vendor specific support to the intel TCO timer based watchdog
1357 devices. At this moment we only have additional support for some
1358 SuperMicro Inc. motherboards.
1361 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1362 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1364 This is the driver for the built-in watchdog timer on the IT8712F
1365 Super I/0 chipset used on many motherboards.
1367 If the driver does not work, then make sure that the game port in
1368 the BIOS is enabled.
1370 To compile this driver as a module, choose M here: the
1371 module will be called it8712f_wdt.
1374 tristate "IT87 Watchdog Timer"
1375 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1376 select WATCHDOG_CORE
1378 This is the driver for the hardware watchdog on the ITE IT8607,
1379 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1380 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1381 IT8783 Super I/O chips.
1383 This watchdog simply watches your kernel to make sure it doesn't
1384 freeze, and if it does, it reboots your computer after a certain
1387 To compile this driver as a module, choose M here: the module will
1391 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1392 select WATCHDOG_CORE
1393 depends on (ARM64 || X86 || COMPILE_TEST) && PCI
1395 A software monitoring watchdog and NMI handling driver. This driver
1396 will detect lockups and provide a stack trace. This is a driver that
1397 will only load on an HP ProLiant system with a minimum of iLO2 support.
1398 To compile this driver as a module, choose M here: the module will be
1401 config HPWDT_NMI_DECODING
1402 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1403 depends on X86 && HP_WATCHDOG
1406 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1407 "Generate NMI to System" virtual button. When an NMI is claimed
1408 by the driver, panic is called.
1411 tristate "Kontron COM Watchdog Timer"
1412 depends on MFD_KEMPLD
1413 select WATCHDOG_CORE
1415 Support for the PLD watchdog on some Kontron ETX and COMexpress
1416 (ETXexpress) modules
1418 This driver can also be built as a module. If so, the module will be
1422 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1423 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1425 This is a driver for National Semiconductor PC87307/PC97307 hardware
1426 watchdog cards as found on the SC1200. This watchdog is mainly used
1427 for power management purposes and can be used to power down the device
1428 during inactivity periods (includes interrupt activity monitoring).
1430 To compile this driver as a module, choose M here: the
1431 module will be called sc1200wdt.
1433 Most people will say N.
1436 tristate "National Semiconductor SCx200 Watchdog"
1437 depends on SCx200 && PCI
1439 Enable the built-in watchdog timer support on the National
1440 Semiconductor SCx200 processors.
1442 If compiled as a module, it will be called scx200_wdt.
1445 tristate "NS PC87413 watchdog"
1446 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1448 This is the driver for the hardware watchdog on the PC87413 chipset
1449 This watchdog simply watches your kernel to make sure it doesn't
1450 freeze, and if it does, it reboots your computer after a certain
1453 To compile this driver as a module, choose M here: the
1454 module will be called pc87413_wdt.
1456 Most people will say N.
1459 tristate "nVidia TCO Timer/Watchdog"
1460 depends on (X86 || COMPILE_TEST) && PCI && HAS_IOPORT
1462 Hardware driver for the TCO timer built into the nVidia Hub family
1463 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1464 watchdog timer that will reboot the machine after its second
1465 expiration. The expiration time can be configured with the
1466 "heartbeat" parameter.
1468 On some motherboards the driver may fail to reset the chipset's
1469 NO_REBOOT flag which prevents the watchdog from rebooting the
1470 machine. If this is the case you will get a kernel message like
1471 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1473 To compile this driver as a module, choose M here: the
1474 module will be called nv_tco.
1477 tristate "RDC R-321x SoC watchdog"
1478 depends on X86_RDC321X || COMPILE_TEST
1481 This is the driver for the built in hardware watchdog
1482 in the RDC R-321x SoC.
1484 To compile this driver as a module, choose M here: the
1485 module will be called rdc321x_wdt.
1488 tristate "SBC-60XX Watchdog Timer"
1489 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1491 This driver can be used with the watchdog timer found on some
1492 single board computers, namely the 6010 PII based computer.
1493 It may well work with other cards. It reads port 0x443 to enable
1494 and re-set the watchdog timer, and reads port 0x45 to disable
1495 the watchdog. If you have a card that behave in similar ways,
1496 you can probably make this driver work with your card as well.
1498 You can compile this driver directly into the kernel, or use
1499 it as a module. The module will be called sbc60xxwdt.
1502 tristate "SBC8360 Watchdog Timer"
1506 This is the driver for the hardware watchdog on the SBC8360 Single
1507 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1509 To compile this driver as a module, choose M here: the
1510 module will be called sbc8360.
1512 Most people will say N.
1515 tristate "SBC Nano 7240 Watchdog Timer"
1516 depends on X86_32 && !UML
1518 This is the driver for the hardware watchdog found on the IEI
1519 single board computers EPIC Nano 7240 (and likely others). This
1520 watchdog simply watches your kernel to make sure it doesn't freeze,
1521 and if it does, it reboots your computer after a certain amount of
1524 To compile this driver as a module, choose M here: the
1525 module will be called sbc7240_wdt.
1528 tristate "SMA CPU5 Watchdog"
1529 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1532 To compile this driver as a module, choose M here: the
1533 module will be called cpu5wdt.
1535 config SMSC_SCH311X_WDT
1536 tristate "SMSC SCH311X Watchdog Timer"
1537 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1539 This is the driver for the hardware watchdog timer on the
1540 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1541 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1544 To compile this driver as a module, choose M here: the
1545 module will be called sch311x_wdt.
1547 config SMSC37B787_WDT
1548 tristate "Winbond SMsC37B787 Watchdog Timer"
1549 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1551 This is the driver for the hardware watchdog component on the
1552 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1553 from Vision Systems and maybe others.
1555 This watchdog simply watches your kernel to make sure it doesn't
1556 freeze, and if it does, it reboots your computer after a certain
1559 Usually a userspace daemon will notify the kernel WDT driver that
1560 userspace is still alive, at regular intervals.
1562 To compile this driver as a module, choose M here: the
1563 module will be called smsc37b787_wdt.
1565 Most people will say N.
1568 tristate "TQ-Systems TQMX86 Watchdog Timer"
1569 depends on X86 || COMPILE_TEST
1570 select WATCHDOG_CORE
1572 This is the driver for the hardware watchdog timer in the TQMX86 IO
1573 controller found on some of their ComExpress Modules.
1575 To compile this driver as a module, choose M here; the module
1576 will be called tqmx86_wdt.
1578 Most people will say N.
1581 tristate "VIA Watchdog Timer"
1582 depends on (X86 || COMPILE_TEST) && PCI
1583 select WATCHDOG_CORE
1585 This is the driver for the hardware watchdog timer on VIA
1586 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1588 To compile this driver as a module, choose M here; the module
1589 will be called via_wdt.
1591 Most people will say N.
1594 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1595 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1596 select WATCHDOG_CORE
1598 This is the driver for the hardware watchdog on the following
1600 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1614 This watchdog simply watches your kernel to make sure it doesn't
1615 freeze, and if it does, it reboots your computer after a certain
1618 To compile this driver as a module, choose M here: the
1619 module will be called w83627hf_wdt.
1621 Most people will say N.
1624 tristate "W83877F (EMACS) Watchdog Timer"
1625 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1627 This is the driver for the hardware watchdog on the W83877F chipset
1628 as used in EMACS PC-104 motherboards (and likely others). This
1629 watchdog simply watches your kernel to make sure it doesn't freeze,
1630 and if it does, it reboots your computer after a certain amount of
1633 To compile this driver as a module, choose M here: the
1634 module will be called w83877f_wdt.
1636 Most people will say N.
1639 tristate "W83977F (PCM-5335) Watchdog Timer"
1640 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1642 This is the driver for the hardware watchdog on the W83977F I/O chip
1643 as used in AAEON's PCM-5335 SBC (and likely others). This
1644 watchdog simply watches your kernel to make sure it doesn't freeze,
1645 and if it does, it reboots your computer after a certain amount of
1648 To compile this driver as a module, choose M here: the
1649 module will be called w83977f_wdt.
1652 tristate "ZF MachZ Watchdog"
1653 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1655 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1656 N. This is the driver for the watchdog timer built-in on that
1657 processor using ZF-Logic interface. This watchdog simply watches
1658 your kernel to make sure it doesn't freeze, and if it does, it
1659 reboots your computer after a certain amount of time.
1661 To compile this driver as a module, choose M here: the
1662 module will be called machzwd.
1664 config SBC_EPX_C3_WATCHDOG
1665 tristate "Winsystems SBC EPX-C3 watchdog"
1666 depends on (X86 || COMPILE_TEST) && HAS_IOPORT
1668 This is the driver for the built-in watchdog timer on the EPX-C3
1669 Single-board computer made by Winsystems, Inc.
1671 *Note*: This hardware watchdog is not probeable and thus there
1672 is no way to know if writing to its IO address will corrupt
1673 your system or have any real effect. The only way to be sure
1674 that this driver does what you want is to make sure you
1675 are running it on an EPX-C3 from Winsystems with the watchdog
1676 timer at IO address 0x1ee and 0x1ef. It will write to both those
1677 IO ports. Basically, the assumption is made that if you compile
1678 this driver into your kernel and/or load it as a module, that you
1679 know what you are doing and that you are in fact running on an
1682 To compile this driver as a module, choose M here: the
1683 module will be called sbc_epx_c3.
1685 config INTEL_MEI_WDT
1686 tristate "Intel MEI iAMT Watchdog"
1687 depends on INTEL_MEI && X86
1688 select WATCHDOG_CORE
1690 A device driver for the Intel MEI iAMT watchdog.
1692 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1693 Whenever the OS hangs or crashes, iAMT will send an event
1694 to any subscriber to this event. The watchdog doesn't reset the
1697 To compile this driver as a module, choose M here:
1698 the module will be called mei_wdt.
1701 tristate "NI 903x/913x Watchdog"
1702 depends on X86 && ACPI
1703 select WATCHDOG_CORE
1705 This is the driver for the watchdog timer on the National Instruments
1706 903x/913x real-time controllers.
1708 To compile this driver as a module, choose M here: the module will be
1712 tristate "NIC7018 Watchdog"
1713 depends on X86 && ACPI
1714 select WATCHDOG_CORE
1716 Support for National Instruments NIC7018 Watchdog.
1718 To compile this driver as a module, choose M here: the module will be
1721 config SIEMENS_SIMATIC_IPC_WDT
1722 tristate "Siemens Simatic IPC Watchdog"
1723 depends on SIEMENS_SIMATIC_IPC && PCI
1725 select WATCHDOG_CORE
1728 This driver adds support for several watchdogs found in Industrial
1731 To compile this driver as a module, choose M here: the module will be
1732 called simatic-ipc-wdt.
1736 config M54xx_WATCHDOG
1737 tristate "MCF54xx watchdog support"
1740 To compile this driver as a module, choose M here: the
1741 module will be called m54xx_wdt.
1743 # MicroBlaze Architecture
1748 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1749 depends on ATH79 || (ARM && COMPILE_TEST)
1751 Hardware driver for the built-in watchdog timer on the Atheros
1752 AR71XX/AR724X/AR913X SoCs.
1755 tristate "Broadcom BCM47xx Watchdog Timer"
1756 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1757 select WATCHDOG_CORE
1759 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1762 tristate "IDT RC32434 SoC Watchdog Timer"
1763 depends on MIKROTIK_RB532
1765 Hardware driver for the IDT RC32434 SoC built-in
1768 To compile this driver as a module, choose M here: the
1769 module will be called rc32434_wdt.
1772 tristate "Indy/I2 Hardware Watchdog"
1773 depends on SGI_HAS_INDYDOG
1775 Hardware driver for the Indy's/I2's watchdog. This is a
1776 watchdog timer that will reboot the machine after a 60 second
1777 timer expired and no process has written to /dev/watchdog during
1781 tristate "Ingenic jz4740 SoC hardware watchdog"
1782 depends on MIPS || COMPILE_TEST
1783 depends on COMMON_CLK
1784 select WATCHDOG_CORE
1787 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1790 tristate "MTX-1 Hardware Watchdog"
1791 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1793 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1794 will reboot the machine after a 100 seconds timer expired.
1797 tristate "Sibyte SoC hardware watchdog"
1800 Watchdog driver for the built in watchdog hardware in Sibyte
1801 SoC processors. There are apparently two watchdog timers
1802 on such processors; this driver supports only the first one,
1803 because currently Linux only supports exporting one watchdog
1806 To compile this driver as a loadable module, choose M here.
1807 The module will be called sb_wdog.
1810 tristate "Toshiba TXx9 Watchdog Timer"
1811 depends on CPU_TX49XX || (MIPS && COMPILE_TEST)
1812 select WATCHDOG_CORE
1814 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1817 tristate "Cavium OCTEON SOC family Watchdog Timer"
1818 depends on CAVIUM_OCTEON_SOC
1820 select WATCHDOG_CORE
1821 select EXPORT_UASM if OCTEON_WDT = m
1823 Hardware driver for OCTEON's on chip watchdog timer.
1824 Enables the watchdog for all cores running Linux. It
1825 installs a NMI handler and pokes the watchdog based on an
1826 interrupt. On first expiration of the watchdog, the
1827 interrupt handler pokes it. The second expiration causes an
1828 NMI that prints a message. The third expiration causes a
1831 When userspace has /dev/watchdog open, no poking is done
1832 from the first interrupt, it is then only poked when the
1835 config MARVELL_GTI_WDT
1836 tristate "Marvell GTI Watchdog driver"
1837 depends on ARCH_THUNDER || (COMPILE_TEST && 64BIT)
1839 select WATCHDOG_CORE
1841 Marvell GTI hardware supports watchdog timer. First timeout
1842 works as watchdog pretimeout and installed interrupt handler
1843 will be called on first timeout. Hardware can generate interrupt
1844 to SCP on second timeout but it is not enabled, so second
1845 timeout is ignored. If device poke does not happen then system
1846 will reboot on third timeout.
1849 tristate "Broadcom BCM2835 hardware watchdog"
1850 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1851 select WATCHDOG_CORE
1853 Watchdog driver for the built in watchdog hardware in Broadcom
1856 To compile this driver as a loadable module, choose M here.
1857 The module will be called bcm2835_wdt.
1860 tristate "BCM Kona Watchdog"
1861 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1862 select WATCHDOG_CORE
1864 Support for the watchdog timer on the following Broadcom BCM281xx
1865 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1868 Say 'Y' or 'M' here to enable the driver. The module will be called
1871 config BCM_KONA_WDT_DEBUG
1872 bool "DEBUGFS support for BCM Kona Watchdog"
1873 depends on BCM_KONA_WDT || COMPILE_TEST
1875 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1876 access to the driver's internal data structures as well as watchdog
1877 timer hardware registres.
1879 If in doubt, say 'N'.
1882 tristate "BCM63xx/BCM7038 Watchdog"
1883 select WATCHDOG_CORE
1884 depends on HAS_IOMEM
1885 depends on ARCH_BCMBCA || ARCH_BRCMSTB || BMIPS_GENERIC || BCM63XX || COMPILE_TEST
1887 Watchdog driver for the built-in hardware in Broadcom 7038 and
1888 later SoCs used in set-top boxes. BCM7038 was made public
1889 during the 2004 CES, and since then, many Broadcom chips use this
1890 watchdog block, including some cable modem chips and DSL (63xx)
1894 tristate "Imagination Technologies PDC Watchdog Timer"
1895 depends on HAS_IOMEM
1896 depends on MIPS || COMPILE_TEST
1897 select WATCHDOG_CORE
1899 Driver for Imagination Technologies PowerDown Controller
1902 To compile this driver as a loadable module, choose M here.
1903 The module will be called imgpdc_wdt.
1906 tristate "Lantiq SoC watchdog"
1908 select WATCHDOG_CORE
1910 Hardware driver for the Lantiq SoC Watchdog Timer.
1912 config LOONGSON1_WDT
1913 tristate "Loongson1 SoC hardware watchdog"
1914 depends on MACH_LOONGSON32 || COMPILE_TEST
1915 select WATCHDOG_CORE
1917 Hardware driver for the Loongson1 SoC Watchdog Timer.
1920 tristate "Ralink SoC watchdog"
1921 select WATCHDOG_CORE
1924 Hardware driver for the Ralink SoC Watchdog Timer.
1927 tristate "HPE GXP watchdog support"
1928 depends on ARCH_HPE_GXP || COMPILE_TEST
1929 select WATCHDOG_CORE
1931 Say Y here to include support for the watchdog timer
1934 To compile this driver as a module, choose M here.
1935 The module will be called gxp-wdt.
1938 tristate "Mediatek SoC watchdog"
1939 select WATCHDOG_CORE
1942 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
1944 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1947 tristate "Microchip PIC32 hardware watchdog"
1948 select WATCHDOG_CORE
1949 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1951 Watchdog driver for the built in watchdog hardware in a PIC32.
1953 Configuration bits must be set appropriately for the watchdog to be
1954 controlled by this driver.
1956 To compile this driver as a loadable module, choose M here.
1957 The module will be called pic32-wdt.
1960 tristate "Microchip PIC32 Deadman Timer"
1961 select WATCHDOG_CORE
1962 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1964 Watchdog driver for PIC32 instruction fetch counting timer. This
1965 specific timer is typically be used in mission critical and safety
1966 critical applications, where any single failure of the software
1967 functionality and sequencing must be detected.
1969 To compile this driver as a loadable module, choose M here.
1970 The module will be called pic32-dmt.
1972 # PARISC Architecture
1974 # POWERPC Architecture
1977 tristate "GE Watchdog Timer"
1980 Watchdog timer found in a number of GE single board computers.
1983 bool "MPC52xx Watchdog Timer"
1984 depends on PPC_MPC52xx || COMPILE_TEST
1986 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1989 tristate "MPC8xxx Platform Watchdog Timer"
1990 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1991 select WATCHDOG_CORE
1993 This driver is for a SoC level watchdog that exists on some
1994 Freescale PowerPC processors. So far this driver supports:
1999 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
2002 tristate "PIKA FPGA Watchdog"
2003 depends on WARP || (PPC64 && COMPILE_TEST)
2006 This enables the watchdog in the PIKA FPGA. Currently used on
2010 tristate "PowerPC Book-E Watchdog Timer"
2011 depends on BOOKE || 4xx
2012 select WATCHDOG_CORE
2014 Watchdog driver for PowerPC Book-E chips, such as the Freescale
2015 MPC85xx SOCs and the IBM PowerPC 440.
2017 Please see Documentation/watchdog/watchdog-api.rst for
2020 config BOOKE_WDT_DEFAULT_TIMEOUT
2021 int "PowerPC Book-E Watchdog Timer Default Timeout"
2022 depends on BOOKE_WDT
2023 default 38 if PPC_E500
2024 range 0 63 if PPC_E500
2025 default 3 if !PPC_E500
2026 range 0 3 if !PPC_E500
2028 Select the default watchdog timer period to be used by the PowerPC
2029 Book-E watchdog driver. A watchdog "event" occurs when the bit
2030 position represented by this number transitions from zero to one.
2032 For Freescale Book-E processors, this is a number between 0 and 63.
2033 For other Book-E processors, this is a number between 0 and 3.
2035 The value can be overridden by the wdt_period command-line parameter.
2038 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
2039 select WATCHDOG_CORE
2040 depends on GPIOLIB || COMPILE_TEST
2042 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
2044 The driver can also be built as a module. If so, the module will be
2047 If unsure select N here.
2049 # PPC64 Architecture
2052 tristate "POWER Architecture Platform Watchdog Timer"
2053 depends on PPC_PSERIES
2054 select WATCHDOG_CORE
2056 Driver for virtual watchdog timers provided by PAPR
2057 hypervisors (e.g. PowerVM, KVM).
2059 config WATCHDOG_RTAS
2060 tristate "RTAS watchdog"
2063 This driver adds watchdog support for the RTAS watchdog.
2065 To compile this driver as a module, choose M here. The module
2066 will be called wdrtas.
2068 # RISC-V Architecture
2070 config STARFIVE_WATCHDOG
2071 tristate "StarFive Watchdog support"
2072 depends on ARCH_STARFIVE || COMPILE_TEST
2073 select WATCHDOG_CORE
2074 default ARCH_STARFIVE
2076 Say Y here to support the watchdog of StarFive JH7100 and JH7110
2077 SoC. This driver can also be built as a module if choose M.
2081 config DIAG288_WATCHDOG
2082 tristate "System z diag288 Watchdog"
2084 select WATCHDOG_CORE
2086 IBM s/390 and zSeries machines running under z/VM 5.1 or later
2087 provide a virtual watchdog timer to their guest that cause a
2088 user define Control Program command to be executed after a
2090 LPAR provides a very similar interface. This driver handles
2093 To compile this driver as a module, choose M here. The module
2094 will be called diag288_wdt.
2096 # SUPERH (sh + sh64) Architecture
2099 tristate "SuperH Watchdog"
2100 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
2101 select WATCHDOG_CORE
2103 This driver adds watchdog support for the integrated watchdog in the
2104 SuperH processors. If you have one of these processors and wish
2105 to have watchdog support enabled, say Y, otherwise say N.
2107 As a side note, saying Y here will automatically boost HZ to 1000
2108 so that the timer has a chance to clear the overflow counter. On
2109 slower systems (such as the SH-2 and SH-3) this will likely yield
2110 some performance issues. As such, the WDT should be avoided here
2111 unless it is absolutely necessary.
2113 To compile this driver as a module, choose M here: the
2114 module will be called shwdt.
2116 # SPARC Architecture
2118 # SPARC64 Architecture
2120 config WATCHDOG_CP1XXX
2121 tristate "CP1XXX Hardware Watchdog support"
2122 depends on SPARC64 && PCI
2124 This is the driver for the hardware watchdog timers present on
2125 Sun Microsystems CompactPCI models CP1400 and CP1500.
2127 To compile this driver as a module, choose M here: the
2128 module will be called cpwatchdog.
2130 If you do not have a CompactPCI model CP1400 or CP1500, or
2131 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2132 you should say N to this option.
2135 tristate "RIO Hardware Watchdog support"
2136 depends on SPARC64 && PCI
2138 Say Y here to support the hardware watchdog capability on Sun RIO
2139 machines. The watchdog timeout period is normally one minute but
2140 can be changed with a boot-time parameter.
2142 config WATCHDOG_SUN4V
2143 tristate "Sun4v Watchdog support"
2144 select WATCHDOG_CORE
2147 Say Y here to support the hypervisor watchdog capability embedded
2148 in the SPARC sun4v architecture.
2150 To compile this driver as a module, choose M here. The module will
2151 be called sun4v_wdt.
2153 # XTENSA Architecture
2158 tristate "Xen Watchdog support"
2160 select WATCHDOG_CORE
2162 Say Y here to support the hypervisor watchdog capability provided
2163 by Xen 4.0 and newer. The watchdog timeout period is normally one
2164 minute but can be changed with a boot-time parameter.
2167 tristate "UML watchdog"
2168 depends on UML || COMPILE_TEST
2171 # ISA-based Watchdog Cards
2174 comment "ISA-based Watchdog Cards"
2178 tristate "Berkshire Products ISA-PC Watchdog"
2181 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2182 This card simply watches your kernel to make sure it doesn't freeze,
2183 and if it does, it reboots your computer after a certain amount of
2184 time. This driver is like the WDT501 driver but for different
2185 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>.
2186 The PC watchdog cards can be ordered from <http://www.berkprod.com/>.
2188 To compile this driver as a module, choose M here: the
2189 module will be called pcwd.
2191 Most people will say N.
2194 tristate "Mixcom Watchdog"
2197 This is a driver for the Mixcom hardware watchdog cards. This
2198 watchdog simply watches your kernel to make sure it doesn't freeze,
2199 and if it does, it reboots your computer after a certain amount of
2202 To compile this driver as a module, choose M here: the
2203 module will be called mixcomwd.
2205 Most people will say N.
2208 tristate "WDT Watchdog timer"
2211 If you have a WDT500P or WDT501P watchdog board, say Y here,
2212 otherwise N. It is not possible to probe for this board, which means
2213 that you have to inform the kernel about the IO port and IRQ that
2214 is needed (you can do this via the io and irq parameters)
2216 To compile this driver as a module, choose M here: the
2217 module will be called wdt.
2220 # PCI-based Watchdog Cards
2223 comment "PCI-based Watchdog Cards"
2226 config PCIPCWATCHDOG
2227 tristate "Berkshire Products PCI-PC Watchdog"
2228 depends on PCI && HAS_IOPORT
2230 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2231 This card simply watches your kernel to make sure it doesn't freeze,
2232 and if it does, it reboots your computer after a certain amount of
2233 time. The card can also monitor the internal temperature of the PC.
2234 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2236 To compile this driver as a module, choose M here: the
2237 module will be called pcwd_pci.
2239 Most people will say N.
2242 tristate "PCI-WDT500/501 Watchdog timer"
2243 depends on PCI && HAS_IOPORT
2245 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2247 If you have a PCI-WDT501 watchdog board then you can enable the
2248 temperature sensor by setting the type parameter to 501.
2250 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2251 can do this via the tachometer parameter. Only do this if you have a
2252 fan tachometer actually set up.
2254 To compile this driver as a module, choose M here: the
2255 module will be called wdt_pci.
2258 # USB-based Watchdog Cards
2261 comment "USB-based Watchdog Cards"
2264 config USBPCWATCHDOG
2265 tristate "Berkshire Products USB-PC Watchdog"
2268 This is the driver for the Berkshire Products USB-PC Watchdog card.
2269 This card simply watches your kernel to make sure it doesn't freeze,
2270 and if it does, it reboots your computer after a certain amount of
2271 time. The card can also monitor the internal temperature of the PC.
2272 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2274 To compile this driver as a module, choose M here: the
2275 module will be called pcwd_usb.
2277 Most people will say N.
2279 config KEEMBAY_WATCHDOG
2280 tristate "Intel Keem Bay SoC non-secure watchdog"
2281 depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
2282 select WATCHDOG_CORE
2284 This option enable support for an In-secure watchdog timer driver for
2285 Intel Keem Bay SoC. This WDT has a 32 bit timer and decrements in every
2286 count unit. An interrupt will be triggered, when the count crosses
2287 the threshold configured in the register.
2289 To compile this driver as a module, choose M here: the
2290 module will be called keembay_wdt.