1 # SPDX-License-Identifier: GPL-2.0-only
4 # Watchdog device configuration
8 bool "Watchdog Timer Support"
10 If you say Y here (and to one of the following options) and create a
11 character special file /dev/watchdog with major number 10 and minor
12 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
13 subsequently opening the file and then failing to write to it for
14 longer than 1 minute will result in rebooting the machine. This
15 could be useful for a networked machine that needs to come back
16 on-line as fast as possible after a lock-up. There's both a watchdog
17 implementation entirely in software (which can sometimes fail to
18 reboot the machine) and a driver for hardware watchdog boards, which
19 are more robust and can also keep track of the temperature inside
20 your computer. For details, read
21 <file:Documentation/watchdog/watchdog-api.rst> in the kernel source.
23 The watchdog is usually used together with the watchdog daemon
24 which is available from
25 <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can
26 also monitor NFS connections and can reboot the machine when the process
34 tristate "WatchDog Timer Driver Core"
36 Say Y here if you want to use the new watchdog timer driver core.
37 This driver provides a framework for all watchdog timer drivers
38 and gives them the /dev/watchdog interface (and later also the
41 config WATCHDOG_NOWAYOUT
42 bool "Disable watchdog shutdown on close"
44 The default watchdog behaviour (which you get if you say N here) is
45 to stop the timer if the process managing it closes the file
46 /dev/watchdog. It's always remotely possible that this process might
47 get killed. If you say Y here, the watchdog cannot be stopped once
50 config WATCHDOG_HANDLE_BOOT_ENABLED
51 bool "Update boot-enabled watchdog until userspace takes over"
54 The default watchdog behaviour (which you get if you say Y here) is
55 to ping watchdog devices that were enabled before the driver has
56 been loaded until control is taken over from userspace using the
57 /dev/watchdog file. If you say N here, the kernel will not update
58 the watchdog on its own. Thus if your userspace does not start fast
59 enough your device will reboot.
61 config WATCHDOG_OPEN_TIMEOUT
62 int "Timeout value for opening watchdog device"
65 The maximum time, in seconds, for which the watchdog framework takes
66 care of pinging a hardware watchdog. A value of 0 means infinite. The
67 value set here can be overridden by the commandline parameter
68 "watchdog.open_timeout".
71 bool "Read different watchdog information through sysfs"
73 Say Y here if you want to enable watchdog device status read through
76 comment "Watchdog Pretimeout Governors"
78 config WATCHDOG_PRETIMEOUT_GOV
79 bool "Enable watchdog pretimeout governors"
80 depends on WATCHDOG_CORE
82 The option allows to select watchdog pretimeout governors.
84 config WATCHDOG_PRETIMEOUT_GOV_SEL
86 depends on WATCHDOG_PRETIMEOUT_GOV
88 select WATCHDOG_PRETIMEOUT_GOV_PANIC if WATCHDOG_PRETIMEOUT_GOV_NOOP=n
90 if WATCHDOG_PRETIMEOUT_GOV
92 config WATCHDOG_PRETIMEOUT_GOV_NOOP
93 tristate "Noop watchdog pretimeout governor"
94 depends on WATCHDOG_CORE
97 Noop watchdog pretimeout governor, only an informational
98 message is added to kernel log buffer.
100 config WATCHDOG_PRETIMEOUT_GOV_PANIC
101 tristate "Panic watchdog pretimeout governor"
102 depends on WATCHDOG_CORE
103 default WATCHDOG_CORE
105 Panic watchdog pretimeout governor, on watchdog pretimeout
106 event put the kernel into panic.
109 prompt "Default Watchdog Pretimeout Governor"
110 default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
112 This option selects a default watchdog pretimeout governor.
113 The governor takes its action, if a watchdog is capable
114 to report a pretimeout event.
116 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP
118 depends on WATCHDOG_PRETIMEOUT_GOV_NOOP
120 Use noop watchdog pretimeout governor by default. If noop
121 governor is selected by a user, write a short message to
122 the kernel log buffer and don't do any system changes.
124 config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC
126 depends on WATCHDOG_PRETIMEOUT_GOV_PANIC
128 Use panic watchdog pretimeout governor by default, if
129 a watchdog pretimeout event happens, consider that
130 a watchdog feeder is dead and reboot is unavoidable.
134 endif # WATCHDOG_PRETIMEOUT_GOV
137 # General Watchdog drivers
140 comment "Watchdog Device Drivers"
142 # Architecture Independent
145 tristate "Software watchdog"
148 A software monitoring watchdog. This will fail to reboot your system
149 from some situations that the hardware watchdog will recover
150 from. Equally it's a lot cheaper to install.
152 To compile this driver as a module, choose M here: the
153 module will be called softdog.
155 config SOFT_WATCHDOG_PRETIMEOUT
156 bool "Software watchdog pretimeout governor support"
157 depends on SOFT_WATCHDOG && WATCHDOG_PRETIMEOUT_GOV
159 Enable this if you want to use pretimeout governors with the software
160 watchdog. Be aware that governors might affect the watchdog because it
161 is purely software, e.g. the panic governor will stall it!
163 config BD70528_WATCHDOG
164 tristate "ROHM BD70528 PMIC Watchdog"
165 depends on MFD_ROHM_BD70528
168 Support for the watchdog in the ROHM BD70528 PMIC. Watchdog trigger
171 Say Y here to include support for the ROHM BD70528 watchdog.
172 Alternatively say M to compile the driver as a module,
173 which will be called bd70528_wdt.
175 config DA9052_WATCHDOG
176 tristate "Dialog DA9052 Watchdog"
177 depends on PMIC_DA9052 || COMPILE_TEST
180 Support for the watchdog in the DA9052 PMIC. Watchdog trigger
183 Say Y here to include support for the DA9052 watchdog.
184 Alternatively say M to compile the driver as a module,
185 which will be called da9052_wdt.
187 config DA9055_WATCHDOG
188 tristate "Dialog Semiconductor DA9055 Watchdog"
189 depends on MFD_DA9055 || COMPILE_TEST
192 If you say yes here you get support for watchdog on the Dialog
193 Semiconductor DA9055 PMIC.
195 This driver can also be built as a module. If so, the module
196 will be called da9055_wdt.
198 config DA9063_WATCHDOG
199 tristate "Dialog DA9063 Watchdog"
200 depends on MFD_DA9063 || COMPILE_TEST
203 Support for the watchdog in the DA9063 PMIC.
205 This driver can be built as a module. The module name is da9063_wdt.
207 config DA9062_WATCHDOG
208 tristate "Dialog DA9062/61 Watchdog"
209 depends on MFD_DA9062 || COMPILE_TEST
213 Support for the watchdog in the DA9062 and DA9061 PMICs.
215 This driver can be built as a module. The module name is da9062_wdt.
218 tristate "Watchdog device controlled through GPIO-line"
222 If you say yes here you get support for watchdog device
223 controlled through GPIO-line.
225 config GPIO_WATCHDOG_ARCH_INITCALL
226 bool "Register the watchdog as early as possible"
227 depends on GPIO_WATCHDOG=y
229 In some situations, the default initcall level (module_init)
230 in not early enough in the boot process to avoid the watchdog
232 If you say yes here, the initcall level would be raised to
236 config MENF21BMC_WATCHDOG
237 tristate "MEN 14F021P00 BMC Watchdog"
238 depends on MFD_MENF21BMC || COMPILE_TEST
242 Say Y here to include support for the MEN 14F021P00 BMC Watchdog.
244 This driver can also be built as a module. If so the module
245 will be called menf21bmc_wdt.
247 config MENZ069_WATCHDOG
248 tristate "MEN 16Z069 Watchdog"
252 Say Y here to include support for the MEN 16Z069 Watchdog.
254 This driver can also be built as a module. If so the module
255 will be called menz069_wdt.
257 config TANGOX_WATCHDOG
258 tristate "Sigma Designs SMP86xx/SMP87xx watchdog"
260 depends on ARCH_TANGO || COMPILE_TEST
263 Support for the watchdog in Sigma Designs SMP86xx (tango3)
264 and SMP87xx (tango4) family chips.
266 This driver can be built as a module. The module name is tangox_wdt.
269 tristate "ACPI Watchdog Action Table (WDAT)"
274 This driver adds support for systems with ACPI Watchdog Action
275 Table (WDAT) table. Servers typically have this but it can be
276 found on some desktop machines as well. This driver will take
277 over the native iTCO watchdog driver found on many Intel CPUs.
279 To compile this driver as module, choose M here: the module will
282 config WM831X_WATCHDOG
283 tristate "WM831x watchdog"
284 depends on MFD_WM831X
287 Support for the watchdog in the WM831x AudioPlus PMICs. When
288 the watchdog triggers the system will be reset.
290 config WM8350_WATCHDOG
291 tristate "WM8350 watchdog"
292 depends on MFD_WM8350
295 Support for the watchdog in the WM8350 AudioPlus PMIC. When
296 the watchdog triggers the system will be reset.
298 config XILINX_WATCHDOG
299 tristate "Xilinx Watchdog timer"
303 Watchdog driver for the xps_timebase_wdt ip core.
305 To compile this driver as a module, choose M here: the
306 module will be called of_xilinx_wdt.
308 config ZIIRAVE_WATCHDOG
309 tristate "Zodiac RAVE Watchdog Timer"
313 Watchdog driver for the Zodiac Aerospace RAVE Switch Watchdog
316 To compile this driver as a module, choose M here: the
317 module will be called ziirave_wdt.
319 config RAVE_SP_WATCHDOG
320 tristate "RAVE SP Watchdog timer"
321 depends on RAVE_SP_CORE
322 depends on NVMEM || !NVMEM
325 Support for the watchdog on RAVE SP device.
328 tristate "Mellanox Watchdog"
329 depends on MELLANOX_PLATFORM
333 This is the driver for the hardware watchdog on Mellanox systems.
334 If you are going to use it, say Y here, otherwise N.
335 This driver can be used together with the watchdog daemon.
336 It can also watch your kernel to make sure it doesn't freeze,
337 and if it does, it reboots your system after a certain amount of
340 To compile this driver as a module, choose M here: the
341 module will be called mlx-wdt.
343 config SL28CPLD_WATCHDOG
344 tristate "Kontron sl28cpld Watchdog"
345 depends on MFD_SL28CPLD || COMPILE_TEST
348 Say Y here to include support for the watchdog timer
349 on the Kontron sl28 CPLD.
351 To compile this driver as a module, choose M here: the
352 module will be called sl28cpld_wdt.
358 config ARM_SP805_WATCHDOG
359 tristate "ARM SP805 Watchdog"
360 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
363 ARM Primecell SP805 Watchdog timer. This will reboot your system when
364 the timeout is reached.
366 config ARM_SBSA_WATCHDOG
367 tristate "ARM SBSA Generic Watchdog"
369 depends on ARM_ARCH_TIMER
372 ARM SBSA Generic Watchdog has two stage timeouts:
373 the first signal (WS0) is for alerting the system by interrupt,
374 the second one (WS1) is a real hardware reset.
375 More details: ARM DEN0029B - Server Base System Architecture (SBSA)
377 This driver can operate ARM SBSA Generic Watchdog as a single stage
378 or a two stages watchdog, it depends on the module parameter "action".
380 Note: the maximum timeout in the two stages mode is half of that in
381 the single stage mode.
383 To compile this driver as module, choose M here: The module
384 will be called sbsa_gwdt.
386 config ARMADA_37XX_WATCHDOG
387 tristate "Armada 37xx watchdog"
388 depends on ARCH_MVEBU || COMPILE_TEST
392 Say Y here to include support for the watchdog timer found on
393 Marvell Armada 37xx SoCs.
394 To compile this driver as a module, choose M here: the
395 module will be called armada_37xx_wdt.
397 config ASM9260_WATCHDOG
398 tristate "Alphascale ASM9260 watchdog"
399 depends on MACH_ASM9260 || COMPILE_TEST
402 select RESET_CONTROLLER
404 Watchdog timer embedded into Alphascale asm9260 chips. This will reboot your
405 system when the timeout is reached.
407 config AT91RM9200_WATCHDOG
408 tristate "AT91RM9200 watchdog"
409 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
411 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
412 system when the timeout is reached.
414 config AT91SAM9X_WATCHDOG
415 tristate "AT91SAM9X / AT91CAP9 watchdog"
416 depends on ARCH_AT91 || COMPILE_TEST
419 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
420 reboot your system when the timeout is reached.
422 config SAMA5D4_WATCHDOG
423 tristate "Atmel SAMA5D4 Watchdog Timer"
424 depends on ARCH_AT91 || COMPILE_TEST
427 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
428 Its Watchdog Timer Mode Register can be written more than once.
429 This will reboot your system when the timeout is reached.
431 config CADENCE_WATCHDOG
432 tristate "Cadence Watchdog Timer"
436 Say Y here if you want to include support for the watchdog
437 timer in the Xilinx Zynq.
439 config 21285_WATCHDOG
440 tristate "DC21285 watchdog"
441 depends on FOOTBRIDGE
443 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
444 here if you wish to use this. Alternatively say M to compile the
445 driver as a module, which will be called wdt285.
447 This driver does not work on all machines. In particular, early CATS
448 boards have hardware problems that will cause the machine to simply
449 lock up if the watchdog fires.
451 "If in doubt, leave it out" - say N.
454 tristate "NetWinder WB83C977 watchdog"
455 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
457 Say Y here to include support for the WB977 watchdog included in
458 NetWinder machines. Alternatively say M to compile the driver as
459 a module, which will be called wdt977.
461 Not sure? It's safe to say N.
463 config FTWDT010_WATCHDOG
464 tristate "Faraday Technology FTWDT010 watchdog"
465 depends on ARM || COMPILE_TEST
469 Say Y here if to include support for the Faraday Technology
470 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
473 To compile this driver as a module, choose M here: the
474 module will be called ftwdt010_wdt.
476 config IXP4XX_WATCHDOG
477 tristate "IXP4xx Watchdog"
478 depends on ARCH_IXP4XX
480 Say Y here if to include support for the watchdog timer
481 in the Intel IXP4xx network processors. This driver can
482 be built as a module by choosing M. The module will
483 be called ixp4xx_wdt.
485 Note: The internal IXP4xx watchdog does a soft CPU reset
486 which doesn't reset any peripherals. There are circumstances
487 where the watchdog will fail to reset the board correctly
488 (e.g., if the boot ROM is in an unreadable state).
490 Say N if you are unsure.
492 config HAVE_S3C2410_WATCHDOG
495 This will include watchdog timer support for Samsung SoCs. If
496 you want to include watchdog support for any machine, kindly
497 select this in the respective mach-XXXX/Kconfig file.
499 config S3C2410_WATCHDOG
500 tristate "S3C2410 Watchdog"
501 depends on HAVE_S3C2410_WATCHDOG || COMPILE_TEST
503 select MFD_SYSCON if ARCH_EXYNOS
505 Watchdog timer block in the Samsung SoCs. This will reboot
506 the system when the timer expires with the watchdog enabled.
508 The driver is limited by the speed of the system's PCLK
509 signal, so with reasonably fast systems (PCLK around 50-66MHz)
510 then watchdog intervals of over approximately 20seconds are
513 The driver can be built as a module by choosing M, and will
514 be called s3c2410_wdt
516 config SA1100_WATCHDOG
517 tristate "SA1100/PXA2xx watchdog"
518 depends on ARCH_SA1100 || ARCH_PXA
520 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
521 reboot your system when timeout is reached.
523 NOTE: once enabled, this timer cannot be disabled.
525 To compile this driver as a module, choose M here: the
526 module will be called sa1100_wdt.
529 tristate "Synopsys DesignWare watchdog"
533 Say Y here if to include support for the Synopsys DesignWare
534 watchdog timer found in many chips.
535 To compile this driver as a module, choose M here: the
536 module will be called dw_wdt.
538 config EP93XX_WATCHDOG
539 tristate "EP93xx Watchdog"
540 depends on ARCH_EP93XX || COMPILE_TEST
543 Say Y here if to include support for the watchdog timer
544 embedded in the Cirrus Logic EP93xx family of devices.
546 To compile this driver as a module, choose M here: the
547 module will be called ep93xx_wdt.
550 tristate "OMAP Watchdog"
551 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
554 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog. Say 'Y'
555 here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
557 config PNX4008_WATCHDOG
558 tristate "LPC32XX Watchdog"
559 depends on ARCH_LPC32XX || COMPILE_TEST
562 Say Y here if to include support for the watchdog timer
563 in the LPC32XX processor.
564 This driver can be built as a module by choosing M. The module
565 will be called pnx4008_wdt.
567 Say N if you are unsure.
570 tristate "IOP Watchdog"
571 depends on ARCH_IOP13XX
572 select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X)
574 Say Y here if to include support for the watchdog timer
575 in the Intel IOP3XX & IOP13XX I/O Processors. This driver can
576 be built as a module by choosing M. The module will
579 Note: The IOP13XX watchdog does an Internal Bus Reset which will
580 affect both cores and the peripherals of the IOP. The ATU-X
581 and/or ATUe configuration registers will remain intact, but if
582 operating as an Root Complex and/or Central Resource, the PCI-X
583 and/or PCIe busses will also be reset. THIS IS A VERY BIG HAMMER.
585 config DAVINCI_WATCHDOG
586 tristate "DaVinci watchdog"
587 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
590 Say Y here if to include support for the watchdog timer
591 in the DaVinci DM644x/DM646x or Keystone processors.
592 To compile this driver as a module, choose M here: the
593 module will be called davinci_wdt.
595 NOTE: once enabled, this timer cannot be disabled.
596 Say N if you are unsure.
598 config K3_RTI_WATCHDOG
599 tristate "Texas Instruments K3 RTI watchdog"
600 depends on ARCH_K3 || COMPILE_TEST
603 Say Y here if you want to include support for the K3 watchdog
604 timer (RTI module) available in the K3 generation of processors.
606 config ORION_WATCHDOG
607 tristate "Orion watchdog"
608 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || (COMPILE_TEST && !ARCH_EBSA110)
612 Say Y here if to include support for the watchdog timer
613 in the Marvell Orion5x and Kirkwood ARM SoCs.
614 To compile this driver as a module, choose M here: the
615 module will be called orion_wdt.
617 config RN5T618_WATCHDOG
618 tristate "Ricoh RN5T618 watchdog"
619 depends on MFD_RN5T618 || COMPILE_TEST
622 If you say yes here you get support for watchdog on the Ricoh
625 This driver can also be built as a module. If so, the module
626 will be called rn5t618_wdt.
628 config SUNXI_WATCHDOG
629 tristate "Allwinner SoCs watchdog support"
630 depends on ARCH_SUNXI || COMPILE_TEST
633 Say Y here to include support for the watchdog timer
635 To compile this driver as a module, choose M here: the
636 module will be called sunxi_wdt.
638 config COH901327_WATCHDOG
639 bool "ST-Ericsson COH 901 327 watchdog"
640 depends on ARCH_U300 || (ARM && COMPILE_TEST)
641 default y if MACH_U300
644 Say Y here to include Watchdog timer support for the
645 watchdog embedded into the ST-Ericsson U300 series platforms.
646 This watchdog is used to reset the system and thus cannot be
647 compiled as a module.
649 config NPCM7XX_WATCHDOG
650 tristate "Nuvoton NPCM750 watchdog"
651 depends on ARCH_NPCM || COMPILE_TEST
652 default y if ARCH_NPCM7XX
655 Say Y here to include Watchdog timer support for the
656 watchdog embedded into the NPCM7xx.
657 This watchdog is used to reset the system and thus cannot be
658 compiled as a module.
660 config TWL4030_WATCHDOG
661 tristate "TWL4030 Watchdog"
662 depends on TWL4030_CORE
665 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
666 watchdog timer support for TWL4030 chips.
668 config STMP3XXX_RTC_WATCHDOG
669 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
670 depends on RTC_DRV_STMP || COMPILE_TEST
673 Say Y here to include support for the watchdog timer inside
674 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
675 To compile this driver as a module, choose M here: the
676 module will be called stmp3xxx_rtc_wdt.
678 config TS4800_WATCHDOG
679 tristate "TS-4800 Watchdog"
680 depends on HAS_IOMEM && OF
681 depends on SOC_IMX51 || COMPILE_TEST
685 Technologic Systems TS-4800 has watchdog timer implemented in
686 an external FPGA. Say Y here if you want to support for the
687 watchdog timer on TS-4800 board.
689 config TS72XX_WATCHDOG
690 tristate "TS-72XX SBC Watchdog"
691 depends on MACH_TS72XX || COMPILE_TEST
694 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
695 watchdog timer implemented in a external CPLD chip. Say Y here
696 if you want to support for the watchdog timer on TS-72XX boards.
698 To compile this driver as a module, choose M here: the
699 module will be called ts72xx_wdt.
701 config MAX63XX_WATCHDOG
702 tristate "Max63xx watchdog"
706 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
708 config MAX77620_WATCHDOG
709 tristate "Maxim Max77620 Watchdog Timer"
710 depends on MFD_MAX77620 || COMPILE_TEST
713 This is the driver for the Max77620 watchdog timer.
714 Say 'Y' here to enable the watchdog timer support for
715 MAX77620 chips. To compile this driver as a module,
716 choose M here: the module will be called max77620_wdt.
719 tristate "IMX2+ Watchdog"
720 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
724 This is the driver for the hardware watchdog
725 on the Freescale IMX2 and later processors.
726 If you have one of these processors and wish to have
727 watchdog support enabled, say Y, otherwise say N.
729 To compile this driver as a module, choose M here: the
730 module will be called imx2_wdt.
733 tristate "IMX SC Watchdog"
734 depends on HAVE_ARM_SMCCC
738 This is the driver for the system controller watchdog
739 on the NXP i.MX SoCs with system controller inside, the
740 watchdog driver will call ARM SMC API and trap into
741 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
742 will request system controller to execute the operations.
743 If you have one of these processors and wish to have
744 watchdog support enabled, say Y, otherwise say N.
746 To compile this driver as a module, choose M here: the
747 module will be called imx_sc_wdt.
750 tristate "IMX7ULP Watchdog"
751 depends on ARCH_MXC || COMPILE_TEST
754 This is the driver for the hardware watchdog on the Freescale
755 IMX7ULP and later processors. If you have one of these
756 processors and wish to have watchdog support enabled,
757 say Y, otherwise say N.
759 To compile this driver as a module, choose M here: the
760 module will be called imx7ulp_wdt.
762 config UX500_WATCHDOG
763 tristate "ST-Ericsson Ux500 watchdog"
764 depends on MFD_DB8500_PRCMU
768 Say Y here to include Watchdog timer support for the watchdog
769 existing in the prcmu of ST-Ericsson Ux500 series platforms.
771 To compile this driver as a module, choose M here: the
772 module will be called ux500_wdt.
775 tristate "Retu watchdog"
779 Retu watchdog driver for Nokia Internet Tablets (770, N800,
780 N810). At least on N800 the watchdog cannot be disabled, so
781 this driver is essential and you should enable it.
783 To compile this driver as a module, choose M here: the
784 module will be called retu_wdt.
787 tristate "MOXART watchdog"
788 depends on ARCH_MOXART || COMPILE_TEST
790 Say Y here to include Watchdog timer support for the watchdog
791 existing on the MOXA ART SoC series platforms.
793 To compile this driver as a module, choose M here: the
794 module will be called moxart_wdt.
796 config SIRFSOC_WATCHDOG
797 tristate "SiRFSOC watchdog"
798 depends on ARCH_SIRF || COMPILE_TEST
802 Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When
803 the watchdog triggers the system will be reset.
805 config ST_LPC_WATCHDOG
806 tristate "STMicroelectronics LPC Watchdog"
807 depends on ARCH_STI || COMPILE_TEST
811 Say Y here to include STMicroelectronics Low Power Controller
812 (LPC) based Watchdog timer support.
814 To compile this driver as a module, choose M here: the
815 module will be called st_lpc_wdt.
817 config TEGRA_WATCHDOG
818 tristate "Tegra watchdog"
819 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
822 Say Y here to include support for the watchdog timer
823 embedded in NVIDIA Tegra SoCs.
825 To compile this driver as a module, choose M here: the
826 module will be called tegra_wdt.
829 tristate "QCOM watchdog"
831 depends on ARCH_QCOM || COMPILE_TEST
834 Say Y here to include Watchdog timer support for the watchdog found
835 on QCOM chipsets. Currently supported targets are the MSM8960,
836 APQ8064, and IPQ8064.
838 To compile this driver as a module, choose M here: the
839 module will be called qcom_wdt.
841 config MESON_GXBB_WATCHDOG
842 tristate "Amlogic Meson GXBB SoCs watchdog support"
843 depends on ARCH_MESON || COMPILE_TEST
846 Say Y here to include support for the watchdog timer
847 in Amlogic Meson GXBB SoCs.
848 To compile this driver as a module, choose M here: the
849 module will be called meson_gxbb_wdt.
851 config MESON_WATCHDOG
852 tristate "Amlogic Meson SoCs watchdog support"
853 depends on ARCH_MESON || COMPILE_TEST
856 Say Y here to include support for the watchdog timer
857 in Amlogic Meson SoCs.
858 To compile this driver as a module, choose M here: the
859 module will be called meson_wdt.
861 config MEDIATEK_WATCHDOG
862 tristate "Mediatek SoCs watchdog support"
863 depends on ARCH_MEDIATEK || COMPILE_TEST
865 select RESET_CONTROLLER
867 Say Y here to include support for the watchdog timer
869 To compile this driver as a module, choose M here: the
870 module will be called mtk_wdt.
872 config DIGICOLOR_WATCHDOG
873 tristate "Conexant Digicolor SoCs watchdog support"
874 depends on ARCH_DIGICOLOR || COMPILE_TEST
877 Say Y here to include support for the watchdog timer
878 in Conexant Digicolor SoCs.
879 To compile this driver as a module, choose M here: the
880 module will be called digicolor_wdt.
882 config ARM_SMC_WATCHDOG
883 tristate "ARM Secure Monitor Call based watchdog support"
884 depends on ARM || ARM64
886 depends on HAVE_ARM_SMCCC
889 Say Y here to include support for a watchdog timer
890 implemented by the EL3 Secure Monitor on ARM platforms.
891 Requires firmware support.
892 To compile this driver as a module, choose M here: the
893 module will be called arm_smc_wdt.
895 config LPC18XX_WATCHDOG
896 tristate "LPC18xx/43xx Watchdog"
897 depends on ARCH_LPC18XX || COMPILE_TEST
901 Say Y here if to include support for the watchdog timer
902 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
904 To compile this driver as a module, choose M here: the
905 module will be called lpc18xx_wdt.
907 config ATLAS7_WATCHDOG
908 tristate "CSRatlas7 watchdog"
909 depends on ARCH_ATLAS7 || COMPILE_TEST
911 Say Y here to include Watchdog timer support for the watchdog
912 existing on the CSRatlas7 series platforms.
914 To compile this driver as a module, choose M here: the
915 module will be called atlas7_wdt.
918 tristate "Renesas WDT Watchdog"
919 depends on ARCH_RENESAS || COMPILE_TEST
922 This driver adds watchdog support for the integrated watchdogs in the
923 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
925 config RENESAS_RZAWDT
926 tristate "Renesas RZ/A WDT Watchdog"
927 depends on ARCH_RENESAS || COMPILE_TEST
930 This driver adds watchdog support for the integrated watchdogs in the
931 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
933 config ASPEED_WATCHDOG
934 tristate "Aspeed BMC watchdog support"
935 depends on ARCH_ASPEED || COMPILE_TEST
938 Say Y here to include support for the watchdog timer
941 This driver is required to reboot the SoC.
943 To compile this driver as a module, choose M here: the
944 module will be called aspeed_wdt.
946 config ZX2967_WATCHDOG
947 tristate "ZTE zx2967 SoCs watchdog support"
951 Say Y here to include support for the watchdog timer
953 To compile this driver as a module, choose M here: the
954 module will be called zx2967_wdt.
956 config STM32_WATCHDOG
957 tristate "STM32 Independent WatchDoG (IWDG) support"
958 depends on ARCH_STM32
962 Say Y here to include support for the watchdog timer
965 To compile this driver as a module, choose M here: the
966 module will be called stm32_iwdg.
968 config STPMIC1_WATCHDOG
969 tristate "STPMIC1 PMIC watchdog support"
970 depends on MFD_STPMIC1
973 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
974 If the watchdog timer expires, stpmic1 will shut down all its power
977 To compile this driver as a module, choose M here: the
978 module will be called spmic1_wdt.
980 config UNIPHIER_WATCHDOG
981 tristate "UniPhier watchdog support"
982 depends on ARCH_UNIPHIER || COMPILE_TEST
983 depends on OF && MFD_SYSCON
986 Say Y here to include support watchdog timer embedded
987 into the UniPhier system.
989 To compile this driver as a module, choose M here: the
990 module will be called uniphier_wdt.
992 config RTD119X_WATCHDOG
993 bool "Realtek RTD119x/RTD129x watchdog support"
994 depends on ARCH_REALTEK || COMPILE_TEST
999 Say Y here to include support for the watchdog timer in
1000 Realtek RTD1295 SoCs.
1002 config SPRD_WATCHDOG
1003 tristate "Spreadtrum watchdog support"
1004 depends on ARCH_SPRD || COMPILE_TEST
1005 select WATCHDOG_CORE
1007 Say Y here to include watchdog timer supported
1008 by Spreadtrum system.
1010 config PM8916_WATCHDOG
1011 tristate "QCOM PM8916 pmic watchdog"
1012 depends on OF && MFD_SPMI_PMIC
1013 select WATCHDOG_CORE
1015 Say Y here to include support watchdog timer embedded into the
1018 config VISCONTI_WATCHDOG
1019 tristate "Toshiba Visconti series watchdog support"
1020 depends on ARCH_VISCONTI || COMPILE_TEST
1021 select WATCHDOG_CORE
1023 Say Y here to include support for the watchdog timer in Toshiba
1026 # X86 (i386 + ia64 + x86_64) Architecture
1029 tristate "Acquire SBC Watchdog Timer"
1032 This is the driver for the hardware watchdog on Single Board
1033 Computers produced by Acquire Inc (and others). This watchdog
1034 simply watches your kernel to make sure it doesn't freeze, and if
1035 it does, it reboots your computer after a certain amount of time.
1037 To compile this driver as a module, choose M here: the
1038 module will be called acquirewdt.
1040 Most people will say N.
1042 config ADVANTECH_WDT
1043 tristate "Advantech SBC Watchdog Timer"
1046 If you are configuring a Linux kernel for the Advantech single-board
1047 computer, say `Y' here to support its built-in watchdog timer
1048 feature. More information can be found at
1049 <https://www.advantech.com.tw/products/>
1052 tristate "ALi M1535 PMU Watchdog Timer"
1053 depends on X86 && PCI
1055 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1057 To compile this driver as a module, choose M here: the
1058 module will be called alim1535_wdt.
1060 Most people will say N.
1063 tristate "ALi M7101 PMU Computer Watchdog"
1066 This is the driver for the hardware watchdog on the ALi M7101 PMU
1067 as used in the x86 Cobalt servers and also found in some
1068 SPARC Netra servers too.
1070 To compile this driver as a module, choose M here: the
1071 module will be called alim7101_wdt.
1073 Most people will say N.
1076 tristate "WinSystems EBC-C384 Watchdog Timer"
1079 select WATCHDOG_CORE
1081 Enables watchdog timer support for the watchdog timer on the
1082 WinSystems EBC-C384 motherboard. The timeout may be configured via
1083 the timeout module parameter.
1086 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1089 This is the driver for the hardware watchdog on the Fintek F71808E,
1090 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1091 F81866 Super I/O controllers.
1093 You can compile this driver directly into the kernel, or use
1094 it as a module. The module will be called f71808e_wdt.
1097 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1098 depends on X86 && PCI
1099 select WATCHDOG_CORE
1101 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1102 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1103 the machine after its expiration. The expiration time can be
1104 configured with the "heartbeat" parameter.
1106 To compile this driver as a module, choose M here: the
1107 module will be called sp5100_tco.
1110 tristate "AMD Geode CS5535/CS5536 Watchdog"
1111 depends on CS5535_MFGPT
1113 This driver enables a watchdog capability built into the
1114 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1115 processors. This watchdog watches your kernel to make sure
1116 it doesn't freeze, and if it does, it reboots your computer after
1117 a certain amount of time.
1119 You can compile this driver directly into the kernel, or use
1120 it as a module. The module will be called geodewdt.
1123 tristate "AMD Elan SC520 processor Watchdog"
1124 depends on MELAN || COMPILE_TEST
1126 This is the driver for the hardware watchdog built in to the
1127 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1128 This watchdog simply watches your kernel to make sure it doesn't
1129 freeze, and if it does, it reboots your computer after a certain
1132 You can compile this driver directly into the kernel, or use
1133 it as a module. The module will be called sc520_wdt.
1135 config SBC_FITPC2_WATCHDOG
1136 tristate "Compulab SBC-FITPC2 watchdog"
1139 This is the driver for the built-in watchdog timer on the fit-PC2,
1140 fit-PC2i, CM-iAM single-board computers made by Compulab.
1142 It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux.
1143 When "Watchdog Timer Value" enabled one can set 31-255 s operational range.
1145 Entering BIOS setup temporary disables watchdog operation regardless to current state,
1146 so system will not be restarted while user in BIOS setup.
1148 Once watchdog was enabled the system will be restarted every
1149 "Watchdog Timer Value" period, so to prevent it user can restart or
1150 disable the watchdog.
1152 To compile this driver as a module, choose M here: the
1153 module will be called sbc_fitpc2_wdt.
1155 Most people will say N.
1158 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1161 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1162 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1163 information are at <http://www.eurotech.it/>.
1166 tristate "IB700 SBC Watchdog Timer"
1169 This is the driver for the hardware watchdog on the IB700 Single
1170 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
1171 simply watches your kernel to make sure it doesn't freeze, and if
1172 it does, it reboots your computer after a certain amount of time.
1174 This driver is like the WDT501 driver but for slightly different hardware.
1176 To compile this driver as a module, choose M here: the
1177 module will be called ib700wdt.
1179 Most people will say N.
1182 tristate "IBM Automatic Server Restart"
1185 This is the driver for the IBM Automatic Server Restart watchdog
1186 timer built-in into some eServer xSeries machines.
1188 To compile this driver as a module, choose M here: the
1189 module will be called ibmasr.
1192 tristate "ICP Single Board Computer Watchdog Timer"
1195 This is a driver for the hardware watchdog on the ICP Single
1196 Board Computer. This driver is working on (at least) the following
1197 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1199 To compile this driver as a module, choose M here: the
1200 module will be called wafer5823wdt.
1203 tristate "Intel 6300ESB Timer/Watchdog"
1205 select WATCHDOG_CORE
1207 Hardware driver for the watchdog timer built into the Intel
1208 6300ESB controller hub.
1210 To compile this driver as a module, choose M here: the
1211 module will be called i6300esb.
1214 tristate "Intel Atom E6xx Watchdog"
1215 depends on X86 && PCI
1216 select WATCHDOG_CORE
1220 Hardware driver for the watchdog timer built into the Intel
1221 Atom E6XX (TunnelCreek) processor.
1223 To compile this driver as a module, choose M here: the
1224 module will be called ie6xx_wdt.
1226 config INTEL_SCU_WATCHDOG
1227 bool "Intel SCU Watchdog for Mobile Platforms"
1228 depends on X86_INTEL_MID
1230 Hardware driver for the watchdog time built into the Intel SCU
1231 for Intel Mobile Platforms.
1233 To compile this driver as a module, choose M here.
1235 config INTEL_MID_WATCHDOG
1236 tristate "Intel MID Watchdog Timer"
1237 depends on X86_INTEL_MID
1238 select WATCHDOG_CORE
1240 Watchdog timer driver built into the Intel SCU for Intel MID
1243 This driver currently supports only the watchdog evolution
1244 implementation in SCU, available for Merrifield generation.
1246 To compile this driver as a module, choose M here.
1249 tristate "Intel TCO Timer/Watchdog"
1250 depends on (X86 || IA64) && PCI
1251 select WATCHDOG_CORE
1252 depends on I2C || I2C=n
1253 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1254 select LPC_ICH if !EXPERT
1255 select I2C_I801 if !EXPERT && I2C
1257 Hardware driver for the intel TCO timer based watchdog devices.
1258 These drivers are included in the Intel 82801 I/O Controller
1259 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1262 The TCO (Total Cost of Ownership) timer is a watchdog timer
1263 that will reboot the machine after its second expiration. The
1264 expiration time can be configured with the "heartbeat" parameter.
1266 On some motherboards the driver may fail to reset the chipset's
1267 NO_REBOOT flag which prevents the watchdog from rebooting the
1268 machine. If this is the case you will get a kernel message like
1269 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1271 To compile this driver as a module, choose M here: the
1272 module will be called iTCO_wdt.
1274 config ITCO_VENDOR_SUPPORT
1275 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1278 Add vendor specific support to the intel TCO timer based watchdog
1279 devices. At this moment we only have additional support for some
1280 SuperMicro Inc. motherboards.
1283 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1286 This is the driver for the built-in watchdog timer on the IT8712F
1287 Super I/0 chipset used on many motherboards.
1289 If the driver does not work, then make sure that the game port in
1290 the BIOS is enabled.
1292 To compile this driver as a module, choose M here: the
1293 module will be called it8712f_wdt.
1296 tristate "IT87 Watchdog Timer"
1298 select WATCHDOG_CORE
1300 This is the driver for the hardware watchdog on the ITE IT8607,
1301 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1302 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1303 IT8783 Super I/O chips.
1305 This watchdog simply watches your kernel to make sure it doesn't
1306 freeze, and if it does, it reboots your computer after a certain
1309 To compile this driver as a module, choose M here: the module will
1313 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1314 select WATCHDOG_CORE
1315 depends on X86 && PCI
1317 A software monitoring watchdog and NMI handling driver. This driver
1318 will detect lockups and provide a stack trace. This is a driver that
1319 will only load on an HP ProLiant system with a minimum of iLO2 support.
1320 To compile this driver as a module, choose M here: the module will be
1323 config HPWDT_NMI_DECODING
1324 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1325 depends on HP_WATCHDOG
1328 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1329 "Generate NMI to System" virtual button. When an NMI is claimed
1330 by the driver, panic is called.
1333 tristate "Kontron COM Watchdog Timer"
1334 depends on MFD_KEMPLD
1335 select WATCHDOG_CORE
1337 Support for the PLD watchdog on some Kontron ETX and COMexpress
1338 (ETXexpress) modules
1340 This driver can also be built as a module. If so, the module will be
1344 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1347 This is a driver for National Semiconductor PC87307/PC97307 hardware
1348 watchdog cards as found on the SC1200. This watchdog is mainly used
1349 for power management purposes and can be used to power down the device
1350 during inactivity periods (includes interrupt activity monitoring).
1352 To compile this driver as a module, choose M here: the
1353 module will be called sc1200wdt.
1355 Most people will say N.
1358 tristate "National Semiconductor SCx200 Watchdog"
1359 depends on SCx200 && PCI
1361 Enable the built-in watchdog timer support on the National
1362 Semiconductor SCx200 processors.
1364 If compiled as a module, it will be called scx200_wdt.
1367 tristate "NS PC87413 watchdog"
1370 This is the driver for the hardware watchdog on the PC87413 chipset
1371 This watchdog simply watches your kernel to make sure it doesn't
1372 freeze, and if it does, it reboots your computer after a certain
1375 To compile this driver as a module, choose M here: the
1376 module will be called pc87413_wdt.
1378 Most people will say N.
1381 tristate "nVidia TCO Timer/Watchdog"
1382 depends on X86 && PCI
1384 Hardware driver for the TCO timer built into the nVidia Hub family
1385 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1386 watchdog timer that will reboot the machine after its second
1387 expiration. The expiration time can be configured with the
1388 "heartbeat" parameter.
1390 On some motherboards the driver may fail to reset the chipset's
1391 NO_REBOOT flag which prevents the watchdog from rebooting the
1392 machine. If this is the case you will get a kernel message like
1393 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1395 To compile this driver as a module, choose M here: the
1396 module will be called nv_tco.
1399 tristate "RDC R-321x SoC watchdog"
1400 depends on X86_RDC321X || COMPILE_TEST
1403 This is the driver for the built in hardware watchdog
1404 in the RDC R-321x SoC.
1406 To compile this driver as a module, choose M here: the
1407 module will be called rdc321x_wdt.
1410 tristate "SBC-60XX Watchdog Timer"
1413 This driver can be used with the watchdog timer found on some
1414 single board computers, namely the 6010 PII based computer.
1415 It may well work with other cards. It reads port 0x443 to enable
1416 and re-set the watchdog timer, and reads port 0x45 to disable
1417 the watchdog. If you have a card that behave in similar ways,
1418 you can probably make this driver work with your card as well.
1420 You can compile this driver directly into the kernel, or use
1421 it as a module. The module will be called sbc60xxwdt.
1424 tristate "SBC8360 Watchdog Timer"
1428 This is the driver for the hardware watchdog on the SBC8360 Single
1429 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1431 To compile this driver as a module, choose M here: the
1432 module will be called sbc8360.
1434 Most people will say N.
1437 tristate "SBC Nano 7240 Watchdog Timer"
1438 depends on X86_32 && !UML
1440 This is the driver for the hardware watchdog found on the IEI
1441 single board computers EPIC Nano 7240 (and likely others). This
1442 watchdog simply watches your kernel to make sure it doesn't freeze,
1443 and if it does, it reboots your computer after a certain amount of
1446 To compile this driver as a module, choose M here: the
1447 module will be called sbc7240_wdt.
1450 tristate "SMA CPU5 Watchdog"
1454 To compile this driver as a module, choose M here: the
1455 module will be called cpu5wdt.
1457 config SMSC_SCH311X_WDT
1458 tristate "SMSC SCH311X Watchdog Timer"
1461 This is the driver for the hardware watchdog timer on the
1462 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1463 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1466 To compile this driver as a module, choose M here: the
1467 module will be called sch311x_wdt.
1469 config SMSC37B787_WDT
1470 tristate "Winbond SMsC37B787 Watchdog Timer"
1473 This is the driver for the hardware watchdog component on the
1474 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1475 from Vision Systems and maybe others.
1477 This watchdog simply watches your kernel to make sure it doesn't
1478 freeze, and if it does, it reboots your computer after a certain
1481 Usually a userspace daemon will notify the kernel WDT driver that
1482 userspace is still alive, at regular intervals.
1484 To compile this driver as a module, choose M here: the
1485 module will be called smsc37b787_wdt.
1487 Most people will say N.
1490 tristate "TQ-Systems TQMX86 Watchdog Timer"
1492 select WATCHDOG_CORE
1494 This is the driver for the hardware watchdog timer in the TQMX86 IO
1495 controller found on some of their ComExpress Modules.
1497 To compile this driver as a module, choose M here; the module
1498 will be called tqmx86_wdt.
1500 Most people will say N.
1503 tristate "VIA Watchdog Timer"
1504 depends on X86 && PCI
1505 select WATCHDOG_CORE
1507 This is the driver for the hardware watchdog timer on VIA
1508 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1510 To compile this driver as a module, choose M here; the module
1511 will be called via_wdt.
1513 Most people will say N.
1516 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1518 select WATCHDOG_CORE
1520 This is the driver for the hardware watchdog on the following
1522 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1536 This watchdog simply watches your kernel to make sure it doesn't
1537 freeze, and if it does, it reboots your computer after a certain
1540 To compile this driver as a module, choose M here: the
1541 module will be called w83627hf_wdt.
1543 Most people will say N.
1546 tristate "W83877F (EMACS) Watchdog Timer"
1549 This is the driver for the hardware watchdog on the W83877F chipset
1550 as used in EMACS PC-104 motherboards (and likely others). This
1551 watchdog simply watches your kernel to make sure it doesn't freeze,
1552 and if it does, it reboots your computer after a certain amount of
1555 To compile this driver as a module, choose M here: the
1556 module will be called w83877f_wdt.
1558 Most people will say N.
1561 tristate "W83977F (PCM-5335) Watchdog Timer"
1564 This is the driver for the hardware watchdog on the W83977F I/O chip
1565 as used in AAEON's PCM-5335 SBC (and likely others). This
1566 watchdog simply watches your kernel to make sure it doesn't freeze,
1567 and if it does, it reboots your computer after a certain amount of
1570 To compile this driver as a module, choose M here: the
1571 module will be called w83977f_wdt.
1574 tristate "ZF MachZ Watchdog"
1577 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1578 N. This is the driver for the watchdog timer built-in on that
1579 processor using ZF-Logic interface. This watchdog simply watches
1580 your kernel to make sure it doesn't freeze, and if it does, it
1581 reboots your computer after a certain amount of time.
1583 To compile this driver as a module, choose M here: the
1584 module will be called machzwd.
1586 config SBC_EPX_C3_WATCHDOG
1587 tristate "Winsystems SBC EPX-C3 watchdog"
1590 This is the driver for the built-in watchdog timer on the EPX-C3
1591 Single-board computer made by Winsystems, Inc.
1593 *Note*: This hardware watchdog is not probeable and thus there
1594 is no way to know if writing to its IO address will corrupt
1595 your system or have any real effect. The only way to be sure
1596 that this driver does what you want is to make sure you
1597 are running it on an EPX-C3 from Winsystems with the watchdog
1598 timer at IO address 0x1ee and 0x1ef. It will write to both those
1599 IO ports. Basically, the assumption is made that if you compile
1600 this driver into your kernel and/or load it as a module, that you
1601 know what you are doing and that you are in fact running on an
1604 To compile this driver as a module, choose M here: the
1605 module will be called sbc_epx_c3.
1607 config INTEL_MEI_WDT
1608 tristate "Intel MEI iAMT Watchdog"
1609 depends on INTEL_MEI && X86
1610 select WATCHDOG_CORE
1612 A device driver for the Intel MEI iAMT watchdog.
1614 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1615 Whenever the OS hangs or crashes, iAMT will send an event
1616 to any subscriber to this event. The watchdog doesn't reset the
1619 To compile this driver as a module, choose M here:
1620 the module will be called mei_wdt.
1623 tristate "NI 903x/913x Watchdog"
1624 depends on X86 && ACPI
1625 select WATCHDOG_CORE
1627 This is the driver for the watchdog timer on the National Instruments
1628 903x/913x real-time controllers.
1630 To compile this driver as a module, choose M here: the module will be
1634 tristate "NIC7018 Watchdog"
1635 depends on X86 && ACPI
1636 select WATCHDOG_CORE
1638 Support for National Instruments NIC7018 Watchdog.
1640 To compile this driver as a module, choose M here: the module will be
1645 config M54xx_WATCHDOG
1646 tristate "MCF54xx watchdog support"
1649 To compile this driver as a module, choose M here: the
1650 module will be called m54xx_wdt.
1652 # MicroBlaze Architecture
1657 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1658 depends on ATH79 || (ARM && COMPILE_TEST)
1660 Hardware driver for the built-in watchdog timer on the Atheros
1661 AR71XX/AR724X/AR913X SoCs.
1664 tristate "Broadcom BCM47xx Watchdog Timer"
1665 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1666 select WATCHDOG_CORE
1668 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1671 tristate "IDT RC32434 SoC Watchdog Timer"
1672 depends on MIKROTIK_RB532
1674 Hardware driver for the IDT RC32434 SoC built-in
1677 To compile this driver as a module, choose M here: the
1678 module will be called rc32434_wdt.
1681 tristate "Indy/I2 Hardware Watchdog"
1682 depends on SGI_HAS_INDYDOG
1684 Hardware driver for the Indy's/I2's watchdog. This is a
1685 watchdog timer that will reboot the machine after a 60 second
1686 timer expired and no process has written to /dev/watchdog during
1690 tristate "Ingenic jz4740 SoC hardware watchdog"
1692 depends on COMMON_CLK
1693 select WATCHDOG_CORE
1696 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1699 tristate "MTX-1 Hardware Watchdog"
1700 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1702 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1703 will reboot the machine after a 100 seconds timer expired.
1706 tristate "PNX833x Hardware Watchdog"
1707 depends on SOC_PNX8335
1710 Hardware driver for the PNX833x's watchdog. This is a
1711 watchdog timer that will reboot the machine after a programmable
1712 timer has expired and no process has written to /dev/watchdog during
1716 tristate "Sibyte SoC hardware watchdog"
1717 depends on CPU_SB1 || (MIPS && COMPILE_TEST)
1719 Watchdog driver for the built in watchdog hardware in Sibyte
1720 SoC processors. There are apparently two watchdog timers
1721 on such processors; this driver supports only the first one,
1722 because currently Linux only supports exporting one watchdog
1725 To compile this driver as a loadable module, choose M here.
1726 The module will be called sb_wdog.
1729 tristate "TI AR7 Watchdog Timer"
1730 depends on AR7 || (MIPS && COMPILE_TEST)
1732 Hardware driver for the TI AR7 Watchdog Timer.
1735 tristate "Toshiba TXx9 Watchdog Timer"
1736 depends on CPU_TX39XX || CPU_TX49XX || (MIPS && COMPILE_TEST)
1737 select WATCHDOG_CORE
1739 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1742 tristate "Cavium OCTEON SOC family Watchdog Timer"
1743 depends on CAVIUM_OCTEON_SOC
1745 select WATCHDOG_CORE
1746 select EXPORT_UASM if OCTEON_WDT = m
1748 Hardware driver for OCTEON's on chip watchdog timer.
1749 Enables the watchdog for all cores running Linux. It
1750 installs a NMI handler and pokes the watchdog based on an
1751 interrupt. On first expiration of the watchdog, the
1752 interrupt handler pokes it. The second expiration causes an
1753 NMI that prints a message. The third expiration causes a
1756 When userspace has /dev/watchdog open, no poking is done
1757 from the first interrupt, it is then only poked when the
1761 tristate "Broadcom BCM63xx hardware watchdog"
1764 Watchdog driver for the built in watchdog hardware in Broadcom
1767 To compile this driver as a loadable module, choose M here.
1768 The module will be called bcm63xx_wdt.
1771 tristate "Broadcom BCM2835 hardware watchdog"
1772 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1773 select WATCHDOG_CORE
1775 Watchdog driver for the built in watchdog hardware in Broadcom
1778 To compile this driver as a loadable module, choose M here.
1779 The module will be called bcm2835_wdt.
1782 tristate "BCM Kona Watchdog"
1783 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1784 select WATCHDOG_CORE
1786 Support for the watchdog timer on the following Broadcom BCM281xx
1787 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1790 Say 'Y' or 'M' here to enable the driver. The module will be called
1793 config BCM_KONA_WDT_DEBUG
1794 bool "DEBUGFS support for BCM Kona Watchdog"
1795 depends on BCM_KONA_WDT
1797 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1798 access to the driver's internal data structures as well as watchdog
1799 timer hardware registres.
1801 If in doubt, say 'N'.
1804 tristate "BCM7038 Watchdog"
1805 select WATCHDOG_CORE
1806 depends on HAS_IOMEM
1807 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
1809 Watchdog driver for the built-in hardware in Broadcom 7038 and
1810 later SoCs used in set-top boxes. BCM7038 was made public
1811 during the 2004 CES, and since then, many Broadcom chips use this
1812 watchdog block, including some cable modem chips.
1815 tristate "Imagination Technologies PDC Watchdog Timer"
1816 depends on HAS_IOMEM
1817 depends on MIPS || COMPILE_TEST
1818 select WATCHDOG_CORE
1820 Driver for Imagination Technologies PowerDown Controller
1823 To compile this driver as a loadable module, choose M here.
1824 The module will be called imgpdc_wdt.
1827 tristate "Lantiq SoC watchdog"
1829 select WATCHDOG_CORE
1831 Hardware driver for the Lantiq SoC Watchdog Timer.
1833 config LOONGSON1_WDT
1834 tristate "Loongson1 SoC hardware watchdog"
1835 depends on MACH_LOONGSON32
1836 select WATCHDOG_CORE
1838 Hardware driver for the Loongson1 SoC Watchdog Timer.
1841 tristate "Ralink SoC watchdog"
1842 select WATCHDOG_CORE
1845 Hardware driver for the Ralink SoC Watchdog Timer.
1848 tristate "Mediatek SoC watchdog"
1849 select WATCHDOG_CORE
1850 depends on SOC_MT7620 || SOC_MT7621
1852 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1855 tristate "Microchip PIC32 hardware watchdog"
1856 select WATCHDOG_CORE
1857 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1859 Watchdog driver for the built in watchdog hardware in a PIC32.
1861 Configuration bits must be set appropriately for the watchdog to be
1862 controlled by this driver.
1864 To compile this driver as a loadable module, choose M here.
1865 The module will be called pic32-wdt.
1868 tristate "Microchip PIC32 Deadman Timer"
1869 select WATCHDOG_CORE
1870 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1872 Watchdog driver for PIC32 instruction fetch counting timer. This specific
1873 timer is typically be used in misson critical and safety critical
1874 applications, where any single failure of the software functionality
1875 and sequencing must be detected.
1877 To compile this driver as a loadable module, choose M here.
1878 The module will be called pic32-dmt.
1880 # PARISC Architecture
1882 # POWERPC Architecture
1885 tristate "GE Watchdog Timer"
1888 Watchdog timer found in a number of GE single board computers.
1891 bool "MPC52xx Watchdog Timer"
1892 depends on PPC_MPC52xx || COMPILE_TEST
1894 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1897 tristate "MPC8xxx Platform Watchdog Timer"
1898 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1899 select WATCHDOG_CORE
1901 This driver is for a SoC level watchdog that exists on some
1902 Freescale PowerPC processors. So far this driver supports:
1907 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1910 tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
1911 depends on MV64X60 || COMPILE_TEST
1914 tristate "PIKA FPGA Watchdog"
1915 depends on WARP || (PPC64 && COMPILE_TEST)
1918 This enables the watchdog in the PIKA FPGA. Currently used on
1922 tristate "PowerPC Book-E Watchdog Timer"
1923 depends on BOOKE || 4xx
1924 select WATCHDOG_CORE
1926 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1927 MPC85xx SOCs and the IBM PowerPC 440.
1929 Please see Documentation/watchdog/watchdog-api.rst for
1932 config BOOKE_WDT_DEFAULT_TIMEOUT
1933 int "PowerPC Book-E Watchdog Timer Default Timeout"
1934 depends on BOOKE_WDT
1935 default 38 if PPC_FSL_BOOK3E
1936 range 0 63 if PPC_FSL_BOOK3E
1937 default 3 if !PPC_FSL_BOOK3E
1938 range 0 3 if !PPC_FSL_BOOK3E
1940 Select the default watchdog timer period to be used by the PowerPC
1941 Book-E watchdog driver. A watchdog "event" occurs when the bit
1942 position represented by this number transitions from zero to one.
1944 For Freescale Book-E processors, this is a number between 0 and 63.
1945 For other Book-E processors, this is a number between 0 and 3.
1947 The value can be overridden by the wdt_period command-line parameter.
1950 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1951 select WATCHDOG_CORE
1952 depends on GPIOLIB || COMPILE_TEST
1954 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1956 The driver can also be built as a module. If so, the module will be
1959 If unsure select N here.
1961 # PPC64 Architecture
1963 config WATCHDOG_RTAS
1964 tristate "RTAS watchdog"
1967 This driver adds watchdog support for the RTAS watchdog.
1969 To compile this driver as a module, choose M here. The module
1970 will be called wdrtas.
1974 config DIAG288_WATCHDOG
1975 tristate "System z diag288 Watchdog"
1977 select WATCHDOG_CORE
1979 IBM s/390 and zSeries machines running under z/VM 5.1 or later
1980 provide a virtual watchdog timer to their guest that cause a
1981 user define Control Program command to be executed after a
1983 LPAR provides a very similar interface. This driver handles
1986 To compile this driver as a module, choose M here. The module
1987 will be called diag288_wdt.
1989 # SUPERH (sh + sh64) Architecture
1992 tristate "SuperH Watchdog"
1993 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
1994 select WATCHDOG_CORE
1996 This driver adds watchdog support for the integrated watchdog in the
1997 SuperH processors. If you have one of these processors and wish
1998 to have watchdog support enabled, say Y, otherwise say N.
2000 As a side note, saying Y here will automatically boost HZ to 1000
2001 so that the timer has a chance to clear the overflow counter. On
2002 slower systems (such as the SH-2 and SH-3) this will likely yield
2003 some performance issues. As such, the WDT should be avoided here
2004 unless it is absolutely necessary.
2006 To compile this driver as a module, choose M here: the
2007 module will be called shwdt.
2009 # SPARC Architecture
2011 # SPARC64 Architecture
2013 config WATCHDOG_CP1XXX
2014 tristate "CP1XXX Hardware Watchdog support"
2015 depends on SPARC64 && PCI
2017 This is the driver for the hardware watchdog timers present on
2018 Sun Microsystems CompactPCI models CP1400 and CP1500.
2020 To compile this driver as a module, choose M here: the
2021 module will be called cpwatchdog.
2023 If you do not have a CompactPCI model CP1400 or CP1500, or
2024 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2025 you should say N to this option.
2028 tristate "RIO Hardware Watchdog support"
2029 depends on SPARC64 && PCI
2031 Say Y here to support the hardware watchdog capability on Sun RIO
2032 machines. The watchdog timeout period is normally one minute but
2033 can be changed with a boot-time parameter.
2035 config WATCHDOG_SUN4V
2036 tristate "Sun4v Watchdog support"
2037 select WATCHDOG_CORE
2040 Say Y here to support the hypervisor watchdog capability embedded
2041 in the SPARC sun4v architecture.
2043 To compile this driver as a module, choose M here. The module will
2044 be called sun4v_wdt.
2046 # XTENSA Architecture
2051 tristate "Xen Watchdog support"
2053 select WATCHDOG_CORE
2055 Say Y here to support the hypervisor watchdog capability provided
2056 by Xen 4.0 and newer. The watchdog timeout period is normally one
2057 minute but can be changed with a boot-time parameter.
2060 tristate "UML watchdog"
2061 depends on UML || COMPILE_TEST
2064 # ISA-based Watchdog Cards
2067 comment "ISA-based Watchdog Cards"
2071 tristate "Berkshire Products ISA-PC Watchdog"
2074 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2075 This card simply watches your kernel to make sure it doesn't freeze,
2076 and if it does, it reboots your computer after a certain amount of
2077 time. This driver is like the WDT501 driver but for different
2078 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>. The PC
2079 watchdog cards can be ordered from <http://www.berkprod.com/>.
2081 To compile this driver as a module, choose M here: the
2082 module will be called pcwd.
2084 Most people will say N.
2087 tristate "Mixcom Watchdog"
2090 This is a driver for the Mixcom hardware watchdog cards. This
2091 watchdog simply watches your kernel to make sure it doesn't freeze,
2092 and if it does, it reboots your computer after a certain amount of
2095 To compile this driver as a module, choose M here: the
2096 module will be called mixcomwd.
2098 Most people will say N.
2101 tristate "WDT Watchdog timer"
2104 If you have a WDT500P or WDT501P watchdog board, say Y here,
2105 otherwise N. It is not possible to probe for this board, which means
2106 that you have to inform the kernel about the IO port and IRQ that
2107 is needed (you can do this via the io and irq parameters)
2109 To compile this driver as a module, choose M here: the
2110 module will be called wdt.
2113 # PCI-based Watchdog Cards
2116 comment "PCI-based Watchdog Cards"
2119 config PCIPCWATCHDOG
2120 tristate "Berkshire Products PCI-PC Watchdog"
2123 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2124 This card simply watches your kernel to make sure it doesn't freeze,
2125 and if it does, it reboots your computer after a certain amount of
2126 time. The card can also monitor the internal temperature of the PC.
2127 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2129 To compile this driver as a module, choose M here: the
2130 module will be called pcwd_pci.
2132 Most people will say N.
2135 tristate "PCI-WDT500/501 Watchdog timer"
2138 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2140 If you have a PCI-WDT501 watchdog board then you can enable the
2141 temperature sensor by setting the type parameter to 501.
2143 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2144 can do this via the tachometer parameter. Only do this if you have a
2145 fan tachometer actually set up.
2147 To compile this driver as a module, choose M here: the
2148 module will be called wdt_pci.
2151 # USB-based Watchdog Cards
2154 comment "USB-based Watchdog Cards"
2157 config USBPCWATCHDOG
2158 tristate "Berkshire Products USB-PC Watchdog"
2161 This is the driver for the Berkshire Products USB-PC Watchdog card.
2162 This card simply watches your kernel to make sure it doesn't freeze,
2163 and if it does, it reboots your computer after a certain amount of
2164 time. The card can also monitor the internal temperature of the PC.
2165 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2167 To compile this driver as a module, choose M here: the
2168 module will be called pcwd_usb.
2170 Most people will say N.