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.
347 config ARM_SP805_WATCHDOG
348 tristate "ARM SP805 Watchdog"
349 depends on (ARM || ARM64 || COMPILE_TEST) && ARM_AMBA
352 ARM Primecell SP805 Watchdog timer. This will reboot your system when
353 the timeout is reached.
355 config ARM_SBSA_WATCHDOG
356 tristate "ARM SBSA Generic Watchdog"
358 depends on ARM_ARCH_TIMER
361 ARM SBSA Generic Watchdog has two stage timeouts:
362 the first signal (WS0) is for alerting the system by interrupt,
363 the second one (WS1) is a real hardware reset.
364 More details: ARM DEN0029B - Server Base System Architecture (SBSA)
366 This driver can operate ARM SBSA Generic Watchdog as a single stage
367 or a two stages watchdog, it depends on the module parameter "action".
369 Note: the maximum timeout in the two stages mode is half of that in
370 the single stage mode.
372 To compile this driver as module, choose M here: The module
373 will be called sbsa_gwdt.
375 config ARMADA_37XX_WATCHDOG
376 tristate "Armada 37xx watchdog"
377 depends on ARCH_MVEBU || COMPILE_TEST
381 Say Y here to include support for the watchdog timer found on
382 Marvell Armada 37xx SoCs.
383 To compile this driver as a module, choose M here: the
384 module will be called armada_37xx_wdt.
386 config ASM9260_WATCHDOG
387 tristate "Alphascale ASM9260 watchdog"
388 depends on MACH_ASM9260 || COMPILE_TEST
391 select RESET_CONTROLLER
393 Watchdog timer embedded into Alphascale asm9260 chips. This will reboot your
394 system when the timeout is reached.
396 config AT91RM9200_WATCHDOG
397 tristate "AT91RM9200 watchdog"
398 depends on (SOC_AT91RM9200 && MFD_SYSCON) || COMPILE_TEST
400 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
401 system when the timeout is reached.
403 config AT91SAM9X_WATCHDOG
404 tristate "AT91SAM9X / AT91CAP9 watchdog"
405 depends on ARCH_AT91 || COMPILE_TEST
408 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
409 reboot your system when the timeout is reached.
411 config SAMA5D4_WATCHDOG
412 tristate "Atmel SAMA5D4 Watchdog Timer"
413 depends on ARCH_AT91 || COMPILE_TEST
416 Atmel SAMA5D4 watchdog timer is embedded into SAMA5D4 chips.
417 Its Watchdog Timer Mode Register can be written more than once.
418 This will reboot your system when the timeout is reached.
420 config CADENCE_WATCHDOG
421 tristate "Cadence Watchdog Timer"
425 Say Y here if you want to include support for the watchdog
426 timer in the Xilinx Zynq.
428 config 21285_WATCHDOG
429 tristate "DC21285 watchdog"
430 depends on FOOTBRIDGE
432 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
433 here if you wish to use this. Alternatively say M to compile the
434 driver as a module, which will be called wdt285.
436 This driver does not work on all machines. In particular, early CATS
437 boards have hardware problems that will cause the machine to simply
438 lock up if the watchdog fires.
440 "If in doubt, leave it out" - say N.
443 tristate "NetWinder WB83C977 watchdog"
444 depends on (FOOTBRIDGE && ARCH_NETWINDER) || (ARM && COMPILE_TEST)
446 Say Y here to include support for the WB977 watchdog included in
447 NetWinder machines. Alternatively say M to compile the driver as
448 a module, which will be called wdt977.
450 Not sure? It's safe to say N.
452 config FTWDT010_WATCHDOG
453 tristate "Faraday Technology FTWDT010 watchdog"
454 depends on ARM || COMPILE_TEST
458 Say Y here if to include support for the Faraday Technology
459 FTWDT010 watchdog timer embedded in the Cortina Systems Gemini
462 To compile this driver as a module, choose M here: the
463 module will be called ftwdt010_wdt.
465 config IXP4XX_WATCHDOG
466 tristate "IXP4xx Watchdog"
467 depends on ARCH_IXP4XX
469 Say Y here if to include support for the watchdog timer
470 in the Intel IXP4xx network processors. This driver can
471 be built as a module by choosing M. The module will
472 be called ixp4xx_wdt.
474 Note: The internal IXP4xx watchdog does a soft CPU reset
475 which doesn't reset any peripherals. There are circumstances
476 where the watchdog will fail to reset the board correctly
477 (e.g., if the boot ROM is in an unreadable state).
479 Say N if you are unsure.
481 config HAVE_S3C2410_WATCHDOG
484 This will include watchdog timer support for Samsung SoCs. If
485 you want to include watchdog support for any machine, kindly
486 select this in the respective mach-XXXX/Kconfig file.
488 config S3C2410_WATCHDOG
489 tristate "S3C2410 Watchdog"
490 depends on HAVE_S3C2410_WATCHDOG || COMPILE_TEST
492 select MFD_SYSCON if ARCH_EXYNOS
494 Watchdog timer block in the Samsung SoCs. This will reboot
495 the system when the timer expires with the watchdog enabled.
497 The driver is limited by the speed of the system's PCLK
498 signal, so with reasonably fast systems (PCLK around 50-66MHz)
499 then watchdog intervals of over approximately 20seconds are
502 The driver can be built as a module by choosing M, and will
503 be called s3c2410_wdt
505 config SA1100_WATCHDOG
506 tristate "SA1100/PXA2xx watchdog"
507 depends on ARCH_SA1100 || ARCH_PXA
509 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
510 reboot your system when timeout is reached.
512 NOTE: once enabled, this timer cannot be disabled.
514 To compile this driver as a module, choose M here: the
515 module will be called sa1100_wdt.
518 tristate "Synopsys DesignWare watchdog"
522 Say Y here if to include support for the Synopsys DesignWare
523 watchdog timer found in many chips.
524 To compile this driver as a module, choose M here: the
525 module will be called dw_wdt.
527 config EP93XX_WATCHDOG
528 tristate "EP93xx Watchdog"
529 depends on ARCH_EP93XX || COMPILE_TEST
532 Say Y here if to include support for the watchdog timer
533 embedded in the Cirrus Logic EP93xx family of devices.
535 To compile this driver as a module, choose M here: the
536 module will be called ep93xx_wdt.
539 tristate "OMAP Watchdog"
540 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS || COMPILE_TEST
543 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog. Say 'Y'
544 here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
546 config PNX4008_WATCHDOG
547 tristate "LPC32XX Watchdog"
548 depends on ARCH_LPC32XX || COMPILE_TEST
551 Say Y here if to include support for the watchdog timer
552 in the LPC32XX processor.
553 This driver can be built as a module by choosing M. The module
554 will be called pnx4008_wdt.
556 Say N if you are unsure.
559 tristate "IOP Watchdog"
560 depends on ARCH_IOP13XX
561 select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X)
563 Say Y here if to include support for the watchdog timer
564 in the Intel IOP3XX & IOP13XX I/O Processors. This driver can
565 be built as a module by choosing M. The module will
568 Note: The IOP13XX watchdog does an Internal Bus Reset which will
569 affect both cores and the peripherals of the IOP. The ATU-X
570 and/or ATUe configuration registers will remain intact, but if
571 operating as an Root Complex and/or Central Resource, the PCI-X
572 and/or PCIe busses will also be reset. THIS IS A VERY BIG HAMMER.
574 config DAVINCI_WATCHDOG
575 tristate "DaVinci watchdog"
576 depends on ARCH_DAVINCI || ARCH_KEYSTONE || COMPILE_TEST
579 Say Y here if to include support for the watchdog timer
580 in the DaVinci DM644x/DM646x or Keystone processors.
581 To compile this driver as a module, choose M here: the
582 module will be called davinci_wdt.
584 NOTE: once enabled, this timer cannot be disabled.
585 Say N if you are unsure.
587 config K3_RTI_WATCHDOG
588 tristate "Texas Instruments K3 RTI watchdog"
589 depends on ARCH_K3 || COMPILE_TEST
592 Say Y here if you want to include support for the K3 watchdog
593 timer (RTI module) available in the K3 generation of processors.
595 config ORION_WATCHDOG
596 tristate "Orion watchdog"
597 depends on ARCH_ORION5X || ARCH_DOVE || MACH_DOVE || ARCH_MVEBU || (COMPILE_TEST && !ARCH_EBSA110)
601 Say Y here if to include support for the watchdog timer
602 in the Marvell Orion5x and Kirkwood ARM SoCs.
603 To compile this driver as a module, choose M here: the
604 module will be called orion_wdt.
606 config RN5T618_WATCHDOG
607 tristate "Ricoh RN5T618 watchdog"
608 depends on MFD_RN5T618 || COMPILE_TEST
611 If you say yes here you get support for watchdog on the Ricoh
614 This driver can also be built as a module. If so, the module
615 will be called rn5t618_wdt.
617 config SUNXI_WATCHDOG
618 tristate "Allwinner SoCs watchdog support"
619 depends on ARCH_SUNXI || COMPILE_TEST
622 Say Y here to include support for the watchdog timer
624 To compile this driver as a module, choose M here: the
625 module will be called sunxi_wdt.
627 config COH901327_WATCHDOG
628 bool "ST-Ericsson COH 901 327 watchdog"
629 depends on ARCH_U300 || (ARM && COMPILE_TEST)
630 default y if MACH_U300
633 Say Y here to include Watchdog timer support for the
634 watchdog embedded into the ST-Ericsson U300 series platforms.
635 This watchdog is used to reset the system and thus cannot be
636 compiled as a module.
638 config NPCM7XX_WATCHDOG
639 tristate "Nuvoton NPCM750 watchdog"
640 depends on ARCH_NPCM || COMPILE_TEST
641 default y if ARCH_NPCM7XX
644 Say Y here to include Watchdog timer support for the
645 watchdog embedded into the NPCM7xx.
646 This watchdog is used to reset the system and thus cannot be
647 compiled as a module.
649 config TWL4030_WATCHDOG
650 tristate "TWL4030 Watchdog"
651 depends on TWL4030_CORE
654 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
655 watchdog timer support for TWL4030 chips.
657 config STMP3XXX_RTC_WATCHDOG
658 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
659 depends on RTC_DRV_STMP || COMPILE_TEST
662 Say Y here to include support for the watchdog timer inside
663 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
664 To compile this driver as a module, choose M here: the
665 module will be called stmp3xxx_rtc_wdt.
667 config TS4800_WATCHDOG
668 tristate "TS-4800 Watchdog"
669 depends on HAS_IOMEM && OF
670 depends on SOC_IMX51 || COMPILE_TEST
674 Technologic Systems TS-4800 has watchdog timer implemented in
675 an external FPGA. Say Y here if you want to support for the
676 watchdog timer on TS-4800 board.
678 config TS72XX_WATCHDOG
679 tristate "TS-72XX SBC Watchdog"
680 depends on MACH_TS72XX || COMPILE_TEST
683 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
684 watchdog timer implemented in a external CPLD chip. Say Y here
685 if you want to support for the watchdog timer on TS-72XX boards.
687 To compile this driver as a module, choose M here: the
688 module will be called ts72xx_wdt.
690 config MAX63XX_WATCHDOG
691 tristate "Max63xx watchdog"
695 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
697 config MAX77620_WATCHDOG
698 tristate "Maxim Max77620 Watchdog Timer"
699 depends on MFD_MAX77620 || COMPILE_TEST
702 This is the driver for the Max77620 watchdog timer.
703 Say 'Y' here to enable the watchdog timer support for
704 MAX77620 chips. To compile this driver as a module,
705 choose M here: the module will be called max77620_wdt.
708 tristate "IMX2+ Watchdog"
709 depends on ARCH_MXC || ARCH_LAYERSCAPE || COMPILE_TEST
713 This is the driver for the hardware watchdog
714 on the Freescale IMX2 and later processors.
715 If you have one of these processors and wish to have
716 watchdog support enabled, say Y, otherwise say N.
718 To compile this driver as a module, choose M here: the
719 module will be called imx2_wdt.
722 tristate "IMX SC Watchdog"
723 depends on HAVE_ARM_SMCCC
727 This is the driver for the system controller watchdog
728 on the NXP i.MX SoCs with system controller inside, the
729 watchdog driver will call ARM SMC API and trap into
730 ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware
731 will request system controller to execute the operations.
732 If you have one of these processors and wish to have
733 watchdog support enabled, say Y, otherwise say N.
735 To compile this driver as a module, choose M here: the
736 module will be called imx_sc_wdt.
739 tristate "IMX7ULP Watchdog"
740 depends on ARCH_MXC || COMPILE_TEST
743 This is the driver for the hardware watchdog on the Freescale
744 IMX7ULP and later processors. If you have one of these
745 processors and wish to have watchdog support enabled,
746 say Y, otherwise say N.
748 To compile this driver as a module, choose M here: the
749 module will be called imx7ulp_wdt.
751 config UX500_WATCHDOG
752 tristate "ST-Ericsson Ux500 watchdog"
753 depends on MFD_DB8500_PRCMU
757 Say Y here to include Watchdog timer support for the watchdog
758 existing in the prcmu of ST-Ericsson Ux500 series platforms.
760 To compile this driver as a module, choose M here: the
761 module will be called ux500_wdt.
764 tristate "Retu watchdog"
768 Retu watchdog driver for Nokia Internet Tablets (770, N800,
769 N810). At least on N800 the watchdog cannot be disabled, so
770 this driver is essential and you should enable it.
772 To compile this driver as a module, choose M here: the
773 module will be called retu_wdt.
776 tristate "MOXART watchdog"
777 depends on ARCH_MOXART || COMPILE_TEST
779 Say Y here to include Watchdog timer support for the watchdog
780 existing on the MOXA ART SoC series platforms.
782 To compile this driver as a module, choose M here: the
783 module will be called moxart_wdt.
785 config SIRFSOC_WATCHDOG
786 tristate "SiRFSOC watchdog"
787 depends on ARCH_SIRF || COMPILE_TEST
791 Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When
792 the watchdog triggers the system will be reset.
794 config ST_LPC_WATCHDOG
795 tristate "STMicroelectronics LPC Watchdog"
796 depends on ARCH_STI || COMPILE_TEST
800 Say Y here to include STMicroelectronics Low Power Controller
801 (LPC) based Watchdog timer support.
803 To compile this driver as a module, choose M here: the
804 module will be called st_lpc_wdt.
806 config TEGRA_WATCHDOG
807 tristate "Tegra watchdog"
808 depends on (ARCH_TEGRA || COMPILE_TEST) && HAS_IOMEM
811 Say Y here to include support for the watchdog timer
812 embedded in NVIDIA Tegra SoCs.
814 To compile this driver as a module, choose M here: the
815 module will be called tegra_wdt.
818 tristate "QCOM watchdog"
820 depends on ARCH_QCOM || COMPILE_TEST
823 Say Y here to include Watchdog timer support for the watchdog found
824 on QCOM chipsets. Currently supported targets are the MSM8960,
825 APQ8064, and IPQ8064.
827 To compile this driver as a module, choose M here: the
828 module will be called qcom_wdt.
830 config MESON_GXBB_WATCHDOG
831 tristate "Amlogic Meson GXBB SoCs watchdog support"
832 depends on ARCH_MESON || COMPILE_TEST
835 Say Y here to include support for the watchdog timer
836 in Amlogic Meson GXBB SoCs.
837 To compile this driver as a module, choose M here: the
838 module will be called meson_gxbb_wdt.
840 config MESON_WATCHDOG
841 tristate "Amlogic Meson SoCs watchdog support"
842 depends on ARCH_MESON || COMPILE_TEST
845 Say Y here to include support for the watchdog timer
846 in Amlogic Meson SoCs.
847 To compile this driver as a module, choose M here: the
848 module will be called meson_wdt.
850 config MEDIATEK_WATCHDOG
851 tristate "Mediatek SoCs watchdog support"
852 depends on ARCH_MEDIATEK || COMPILE_TEST
854 select RESET_CONTROLLER
856 Say Y here to include support for the watchdog timer
858 To compile this driver as a module, choose M here: the
859 module will be called mtk_wdt.
861 config DIGICOLOR_WATCHDOG
862 tristate "Conexant Digicolor SoCs watchdog support"
863 depends on ARCH_DIGICOLOR || COMPILE_TEST
866 Say Y here to include support for the watchdog timer
867 in Conexant Digicolor SoCs.
868 To compile this driver as a module, choose M here: the
869 module will be called digicolor_wdt.
871 config ARM_SMC_WATCHDOG
872 tristate "ARM Secure Monitor Call based watchdog support"
873 depends on ARM || ARM64
875 depends on HAVE_ARM_SMCCC
878 Say Y here to include support for a watchdog timer
879 implemented by the EL3 Secure Monitor on ARM platforms.
880 Requires firmware support.
881 To compile this driver as a module, choose M here: the
882 module will be called arm_smc_wdt.
884 config LPC18XX_WATCHDOG
885 tristate "LPC18xx/43xx Watchdog"
886 depends on ARCH_LPC18XX || COMPILE_TEST
890 Say Y here if to include support for the watchdog timer
891 in NXP LPC SoCs family, which includes LPC18xx/LPC43xx
893 To compile this driver as a module, choose M here: the
894 module will be called lpc18xx_wdt.
896 config ATLAS7_WATCHDOG
897 tristate "CSRatlas7 watchdog"
898 depends on ARCH_ATLAS7 || COMPILE_TEST
900 Say Y here to include Watchdog timer support for the watchdog
901 existing on the CSRatlas7 series platforms.
903 To compile this driver as a module, choose M here: the
904 module will be called atlas7_wdt.
907 tristate "Renesas WDT Watchdog"
908 depends on ARCH_RENESAS || COMPILE_TEST
911 This driver adds watchdog support for the integrated watchdogs in the
912 Renesas R-Car and other SH-Mobile SoCs (usually named RWDT or SWDT).
914 config RENESAS_RZAWDT
915 tristate "Renesas RZ/A WDT Watchdog"
916 depends on ARCH_RENESAS || COMPILE_TEST
919 This driver adds watchdog support for the integrated watchdogs in the
920 Renesas RZ/A SoCs. These watchdogs can be used to reset a system.
922 config ASPEED_WATCHDOG
923 tristate "Aspeed BMC watchdog support"
924 depends on ARCH_ASPEED || COMPILE_TEST
927 Say Y here to include support for the watchdog timer
930 This driver is required to reboot the SoC.
932 To compile this driver as a module, choose M here: the
933 module will be called aspeed_wdt.
935 config ZX2967_WATCHDOG
936 tristate "ZTE zx2967 SoCs watchdog support"
940 Say Y here to include support for the watchdog timer
942 To compile this driver as a module, choose M here: the
943 module will be called zx2967_wdt.
945 config STM32_WATCHDOG
946 tristate "STM32 Independent WatchDoG (IWDG) support"
947 depends on ARCH_STM32
951 Say Y here to include support for the watchdog timer
954 To compile this driver as a module, choose M here: the
955 module will be called stm32_iwdg.
957 config STPMIC1_WATCHDOG
958 tristate "STPMIC1 PMIC watchdog support"
959 depends on MFD_STPMIC1
962 Say Y here to include watchdog support embedded into STPMIC1 PMIC.
963 If the watchdog timer expires, stpmic1 will shut down all its power
966 To compile this driver as a module, choose M here: the
967 module will be called spmic1_wdt.
969 config UNIPHIER_WATCHDOG
970 tristate "UniPhier watchdog support"
971 depends on ARCH_UNIPHIER || COMPILE_TEST
972 depends on OF && MFD_SYSCON
975 Say Y here to include support watchdog timer embedded
976 into the UniPhier system.
978 To compile this driver as a module, choose M here: the
979 module will be called uniphier_wdt.
981 config RTD119X_WATCHDOG
982 bool "Realtek RTD119x/RTD129x watchdog support"
983 depends on ARCH_REALTEK || COMPILE_TEST
988 Say Y here to include support for the watchdog timer in
989 Realtek RTD1295 SoCs.
992 tristate "Spreadtrum watchdog support"
993 depends on ARCH_SPRD || COMPILE_TEST
996 Say Y here to include watchdog timer supported
997 by Spreadtrum system.
999 config PM8916_WATCHDOG
1000 tristate "QCOM PM8916 pmic watchdog"
1001 depends on OF && MFD_SPMI_PMIC
1002 select WATCHDOG_CORE
1004 Say Y here to include support watchdog timer embedded into the
1007 # X86 (i386 + ia64 + x86_64) Architecture
1010 tristate "Acquire SBC Watchdog Timer"
1013 This is the driver for the hardware watchdog on Single Board
1014 Computers produced by Acquire Inc (and others). This watchdog
1015 simply watches your kernel to make sure it doesn't freeze, and if
1016 it does, it reboots your computer after a certain amount of time.
1018 To compile this driver as a module, choose M here: the
1019 module will be called acquirewdt.
1021 Most people will say N.
1023 config ADVANTECH_WDT
1024 tristate "Advantech SBC Watchdog Timer"
1027 If you are configuring a Linux kernel for the Advantech single-board
1028 computer, say `Y' here to support its built-in watchdog timer
1029 feature. More information can be found at
1030 <https://www.advantech.com.tw/products/>
1033 tristate "ALi M1535 PMU Watchdog Timer"
1034 depends on X86 && PCI
1036 This is the driver for the hardware watchdog on the ALi M1535 PMU.
1038 To compile this driver as a module, choose M here: the
1039 module will be called alim1535_wdt.
1041 Most people will say N.
1044 tristate "ALi M7101 PMU Computer Watchdog"
1047 This is the driver for the hardware watchdog on the ALi M7101 PMU
1048 as used in the x86 Cobalt servers and also found in some
1049 SPARC Netra servers too.
1051 To compile this driver as a module, choose M here: the
1052 module will be called alim7101_wdt.
1054 Most people will say N.
1057 tristate "WinSystems EBC-C384 Watchdog Timer"
1060 select WATCHDOG_CORE
1062 Enables watchdog timer support for the watchdog timer on the
1063 WinSystems EBC-C384 motherboard. The timeout may be configured via
1064 the timeout module parameter.
1067 tristate "Fintek F718xx, F818xx Super I/O Watchdog"
1070 This is the driver for the hardware watchdog on the Fintek F71808E,
1071 F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
1072 F81866 Super I/O controllers.
1074 You can compile this driver directly into the kernel, or use
1075 it as a module. The module will be called f71808e_wdt.
1078 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
1079 depends on X86 && PCI
1080 select WATCHDOG_CORE
1082 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
1083 (Total Cost of Ownership) timer is a watchdog timer that will reboot
1084 the machine after its expiration. The expiration time can be
1085 configured with the "heartbeat" parameter.
1087 To compile this driver as a module, choose M here: the
1088 module will be called sp5100_tco.
1091 tristate "AMD Geode CS5535/CS5536 Watchdog"
1092 depends on CS5535_MFGPT
1094 This driver enables a watchdog capability built into the
1095 CS5535/CS5536 companion chips for the AMD Geode GX and LX
1096 processors. This watchdog watches your kernel to make sure
1097 it doesn't freeze, and if it does, it reboots your computer after
1098 a certain amount of time.
1100 You can compile this driver directly into the kernel, or use
1101 it as a module. The module will be called geodewdt.
1104 tristate "AMD Elan SC520 processor Watchdog"
1105 depends on MELAN || COMPILE_TEST
1107 This is the driver for the hardware watchdog built in to the
1108 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
1109 This watchdog simply watches your kernel to make sure it doesn't
1110 freeze, and if it does, it reboots your computer after a certain
1113 You can compile this driver directly into the kernel, or use
1114 it as a module. The module will be called sc520_wdt.
1116 config SBC_FITPC2_WATCHDOG
1117 tristate "Compulab SBC-FITPC2 watchdog"
1120 This is the driver for the built-in watchdog timer on the fit-PC2,
1121 fit-PC2i, CM-iAM single-board computers made by Compulab.
1123 It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux.
1124 When "Watchdog Timer Value" enabled one can set 31-255 s operational range.
1126 Entering BIOS setup temporary disables watchdog operation regardless to current state,
1127 so system will not be restarted while user in BIOS setup.
1129 Once watchdog was enabled the system will be restarted every
1130 "Watchdog Timer Value" period, so to prevent it user can restart or
1131 disable the watchdog.
1133 To compile this driver as a module, choose M here: the
1134 module will be called sbc_fitpc2_wdt.
1136 Most people will say N.
1139 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
1142 Enable support for the watchdog timer on the Eurotech CPU-1220 and
1143 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
1144 information are at <http://www.eurotech.it/>.
1147 tristate "IB700 SBC Watchdog Timer"
1150 This is the driver for the hardware watchdog on the IB700 Single
1151 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
1152 simply watches your kernel to make sure it doesn't freeze, and if
1153 it does, it reboots your computer after a certain amount of time.
1155 This driver is like the WDT501 driver but for slightly different hardware.
1157 To compile this driver as a module, choose M here: the
1158 module will be called ib700wdt.
1160 Most people will say N.
1163 tristate "IBM Automatic Server Restart"
1166 This is the driver for the IBM Automatic Server Restart watchdog
1167 timer built-in into some eServer xSeries machines.
1169 To compile this driver as a module, choose M here: the
1170 module will be called ibmasr.
1173 tristate "ICP Single Board Computer Watchdog Timer"
1176 This is a driver for the hardware watchdog on the ICP Single
1177 Board Computer. This driver is working on (at least) the following
1178 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
1180 To compile this driver as a module, choose M here: the
1181 module will be called wafer5823wdt.
1184 tristate "Intel 6300ESB Timer/Watchdog"
1186 select WATCHDOG_CORE
1188 Hardware driver for the watchdog timer built into the Intel
1189 6300ESB controller hub.
1191 To compile this driver as a module, choose M here: the
1192 module will be called i6300esb.
1195 tristate "Intel Atom E6xx Watchdog"
1196 depends on X86 && PCI
1197 select WATCHDOG_CORE
1201 Hardware driver for the watchdog timer built into the Intel
1202 Atom E6XX (TunnelCreek) processor.
1204 To compile this driver as a module, choose M here: the
1205 module will be called ie6xx_wdt.
1207 config INTEL_SCU_WATCHDOG
1208 bool "Intel SCU Watchdog for Mobile Platforms"
1209 depends on X86_INTEL_MID
1211 Hardware driver for the watchdog time built into the Intel SCU
1212 for Intel Mobile Platforms.
1214 To compile this driver as a module, choose M here.
1216 config INTEL_MID_WATCHDOG
1217 tristate "Intel MID Watchdog Timer"
1218 depends on X86_INTEL_MID
1219 select WATCHDOG_CORE
1221 Watchdog timer driver built into the Intel SCU for Intel MID
1224 This driver currently supports only the watchdog evolution
1225 implementation in SCU, available for Merrifield generation.
1227 To compile this driver as a module, choose M here.
1230 tristate "Intel TCO Timer/Watchdog"
1231 depends on (X86 || IA64) && PCI
1232 select WATCHDOG_CORE
1233 depends on I2C || I2C=n
1234 depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
1235 select LPC_ICH if !EXPERT
1236 select I2C_I801 if !EXPERT && I2C
1238 Hardware driver for the intel TCO timer based watchdog devices.
1239 These drivers are included in the Intel 82801 I/O Controller
1240 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
1243 The TCO (Total Cost of Ownership) timer is a watchdog timer
1244 that will reboot the machine after its second expiration. The
1245 expiration time can be configured with the "heartbeat" parameter.
1247 On some motherboards the driver may fail to reset the chipset's
1248 NO_REBOOT flag which prevents the watchdog from rebooting the
1249 machine. If this is the case you will get a kernel message like
1250 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1252 To compile this driver as a module, choose M here: the
1253 module will be called iTCO_wdt.
1255 config ITCO_VENDOR_SUPPORT
1256 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
1259 Add vendor specific support to the intel TCO timer based watchdog
1260 devices. At this moment we only have additional support for some
1261 SuperMicro Inc. motherboards.
1264 tristate "IT8712F (Smart Guardian) Watchdog Timer"
1267 This is the driver for the built-in watchdog timer on the IT8712F
1268 Super I/0 chipset used on many motherboards.
1270 If the driver does not work, then make sure that the game port in
1271 the BIOS is enabled.
1273 To compile this driver as a module, choose M here: the
1274 module will be called it8712f_wdt.
1277 tristate "IT87 Watchdog Timer"
1279 select WATCHDOG_CORE
1281 This is the driver for the hardware watchdog on the ITE IT8607,
1282 IT8620, IT8622, IT8625, IT8628, IT8655, IT8665, IT8686, IT8702,
1283 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726, IT8728, and
1284 IT8783 Super I/O chips.
1286 This watchdog simply watches your kernel to make sure it doesn't
1287 freeze, and if it does, it reboots your computer after a certain
1290 To compile this driver as a module, choose M here: the module will
1294 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
1295 select WATCHDOG_CORE
1296 depends on X86 && PCI
1298 A software monitoring watchdog and NMI handling driver. This driver
1299 will detect lockups and provide a stack trace. This is a driver that
1300 will only load on an HP ProLiant system with a minimum of iLO2 support.
1301 To compile this driver as a module, choose M here: the module will be
1304 config HPWDT_NMI_DECODING
1305 bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
1306 depends on HP_WATCHDOG
1309 Enables the NMI handler for the watchdog pretimeout NMI and the iLO
1310 "Generate NMI to System" virtual button. When an NMI is claimed
1311 by the driver, panic is called.
1314 tristate "Kontron COM Watchdog Timer"
1315 depends on MFD_KEMPLD
1316 select WATCHDOG_CORE
1318 Support for the PLD watchdog on some Kontron ETX and COMexpress
1319 (ETXexpress) modules
1321 This driver can also be built as a module. If so, the module will be
1325 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
1328 This is a driver for National Semiconductor PC87307/PC97307 hardware
1329 watchdog cards as found on the SC1200. This watchdog is mainly used
1330 for power management purposes and can be used to power down the device
1331 during inactivity periods (includes interrupt activity monitoring).
1333 To compile this driver as a module, choose M here: the
1334 module will be called sc1200wdt.
1336 Most people will say N.
1339 tristate "National Semiconductor SCx200 Watchdog"
1340 depends on SCx200 && PCI
1342 Enable the built-in watchdog timer support on the National
1343 Semiconductor SCx200 processors.
1345 If compiled as a module, it will be called scx200_wdt.
1348 tristate "NS PC87413 watchdog"
1351 This is the driver for the hardware watchdog on the PC87413 chipset
1352 This watchdog simply watches your kernel to make sure it doesn't
1353 freeze, and if it does, it reboots your computer after a certain
1356 To compile this driver as a module, choose M here: the
1357 module will be called pc87413_wdt.
1359 Most people will say N.
1362 tristate "nVidia TCO Timer/Watchdog"
1363 depends on X86 && PCI
1365 Hardware driver for the TCO timer built into the nVidia Hub family
1366 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
1367 watchdog timer that will reboot the machine after its second
1368 expiration. The expiration time can be configured with the
1369 "heartbeat" parameter.
1371 On some motherboards the driver may fail to reset the chipset's
1372 NO_REBOOT flag which prevents the watchdog from rebooting the
1373 machine. If this is the case you will get a kernel message like
1374 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
1376 To compile this driver as a module, choose M here: the
1377 module will be called nv_tco.
1380 tristate "RDC R-321x SoC watchdog"
1381 depends on X86_RDC321X || COMPILE_TEST
1384 This is the driver for the built in hardware watchdog
1385 in the RDC R-321x SoC.
1387 To compile this driver as a module, choose M here: the
1388 module will be called rdc321x_wdt.
1391 tristate "SBC-60XX Watchdog Timer"
1394 This driver can be used with the watchdog timer found on some
1395 single board computers, namely the 6010 PII based computer.
1396 It may well work with other cards. It reads port 0x443 to enable
1397 and re-set the watchdog timer, and reads port 0x45 to disable
1398 the watchdog. If you have a card that behave in similar ways,
1399 you can probably make this driver work with your card as well.
1401 You can compile this driver directly into the kernel, or use
1402 it as a module. The module will be called sbc60xxwdt.
1405 tristate "SBC8360 Watchdog Timer"
1409 This is the driver for the hardware watchdog on the SBC8360 Single
1410 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
1412 To compile this driver as a module, choose M here: the
1413 module will be called sbc8360.
1415 Most people will say N.
1418 tristate "SBC Nano 7240 Watchdog Timer"
1419 depends on X86_32 && !UML
1421 This is the driver for the hardware watchdog found on the IEI
1422 single board computers EPIC Nano 7240 (and likely others). This
1423 watchdog simply watches your kernel to make sure it doesn't freeze,
1424 and if it does, it reboots your computer after a certain amount of
1427 To compile this driver as a module, choose M here: the
1428 module will be called sbc7240_wdt.
1431 tristate "SMA CPU5 Watchdog"
1435 To compile this driver as a module, choose M here: the
1436 module will be called cpu5wdt.
1438 config SMSC_SCH311X_WDT
1439 tristate "SMSC SCH311X Watchdog Timer"
1442 This is the driver for the hardware watchdog timer on the
1443 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
1444 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
1447 To compile this driver as a module, choose M here: the
1448 module will be called sch311x_wdt.
1450 config SMSC37B787_WDT
1451 tristate "Winbond SMsC37B787 Watchdog Timer"
1454 This is the driver for the hardware watchdog component on the
1455 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
1456 from Vision Systems and maybe others.
1458 This watchdog simply watches your kernel to make sure it doesn't
1459 freeze, and if it does, it reboots your computer after a certain
1462 Usually a userspace daemon will notify the kernel WDT driver that
1463 userspace is still alive, at regular intervals.
1465 To compile this driver as a module, choose M here: the
1466 module will be called smsc37b787_wdt.
1468 Most people will say N.
1471 tristate "TQ-Systems TQMX86 Watchdog Timer"
1473 select WATCHDOG_CORE
1475 This is the driver for the hardware watchdog timer in the TQMX86 IO
1476 controller found on some of their ComExpress Modules.
1478 To compile this driver as a module, choose M here; the module
1479 will be called tqmx86_wdt.
1481 Most people will say N.
1484 tristate "VIA Watchdog Timer"
1485 depends on X86 && PCI
1486 select WATCHDOG_CORE
1488 This is the driver for the hardware watchdog timer on VIA
1489 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
1491 To compile this driver as a module, choose M here; the module
1492 will be called via_wdt.
1494 Most people will say N.
1497 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
1499 select WATCHDOG_CORE
1501 This is the driver for the hardware watchdog on the following
1503 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
1517 This watchdog simply watches your kernel to make sure it doesn't
1518 freeze, and if it does, it reboots your computer after a certain
1521 To compile this driver as a module, choose M here: the
1522 module will be called w83627hf_wdt.
1524 Most people will say N.
1527 tristate "W83877F (EMACS) Watchdog Timer"
1530 This is the driver for the hardware watchdog on the W83877F chipset
1531 as used in EMACS PC-104 motherboards (and likely others). This
1532 watchdog simply watches your kernel to make sure it doesn't freeze,
1533 and if it does, it reboots your computer after a certain amount of
1536 To compile this driver as a module, choose M here: the
1537 module will be called w83877f_wdt.
1539 Most people will say N.
1542 tristate "W83977F (PCM-5335) Watchdog Timer"
1545 This is the driver for the hardware watchdog on the W83977F I/O chip
1546 as used in AAEON's PCM-5335 SBC (and likely others). This
1547 watchdog simply watches your kernel to make sure it doesn't freeze,
1548 and if it does, it reboots your computer after a certain amount of
1551 To compile this driver as a module, choose M here: the
1552 module will be called w83977f_wdt.
1555 tristate "ZF MachZ Watchdog"
1558 If you are using a ZF Micro MachZ processor, say Y here, otherwise
1559 N. This is the driver for the watchdog timer built-in on that
1560 processor using ZF-Logic interface. This watchdog simply watches
1561 your kernel to make sure it doesn't freeze, and if it does, it
1562 reboots your computer after a certain amount of time.
1564 To compile this driver as a module, choose M here: the
1565 module will be called machzwd.
1567 config SBC_EPX_C3_WATCHDOG
1568 tristate "Winsystems SBC EPX-C3 watchdog"
1571 This is the driver for the built-in watchdog timer on the EPX-C3
1572 Single-board computer made by Winsystems, Inc.
1574 *Note*: This hardware watchdog is not probeable and thus there
1575 is no way to know if writing to its IO address will corrupt
1576 your system or have any real effect. The only way to be sure
1577 that this driver does what you want is to make sure you
1578 are running it on an EPX-C3 from Winsystems with the watchdog
1579 timer at IO address 0x1ee and 0x1ef. It will write to both those
1580 IO ports. Basically, the assumption is made that if you compile
1581 this driver into your kernel and/or load it as a module, that you
1582 know what you are doing and that you are in fact running on an
1585 To compile this driver as a module, choose M here: the
1586 module will be called sbc_epx_c3.
1588 config INTEL_MEI_WDT
1589 tristate "Intel MEI iAMT Watchdog"
1590 depends on INTEL_MEI && X86
1591 select WATCHDOG_CORE
1593 A device driver for the Intel MEI iAMT watchdog.
1595 The Intel AMT Watchdog is an OS Health (Hang/Crash) watchdog.
1596 Whenever the OS hangs or crashes, iAMT will send an event
1597 to any subscriber to this event. The watchdog doesn't reset the
1600 To compile this driver as a module, choose M here:
1601 the module will be called mei_wdt.
1604 tristate "NI 903x/913x Watchdog"
1605 depends on X86 && ACPI
1606 select WATCHDOG_CORE
1608 This is the driver for the watchdog timer on the National Instruments
1609 903x/913x real-time controllers.
1611 To compile this driver as a module, choose M here: the module will be
1615 tristate "NIC7018 Watchdog"
1616 depends on X86 && ACPI
1617 select WATCHDOG_CORE
1619 Support for National Instruments NIC7018 Watchdog.
1621 To compile this driver as a module, choose M here: the module will be
1626 config M54xx_WATCHDOG
1627 tristate "MCF54xx watchdog support"
1630 To compile this driver as a module, choose M here: the
1631 module will be called m54xx_wdt.
1633 # MicroBlaze Architecture
1638 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1639 depends on ATH79 || (ARM && COMPILE_TEST)
1641 Hardware driver for the built-in watchdog timer on the Atheros
1642 AR71XX/AR724X/AR913X SoCs.
1645 tristate "Broadcom BCM47xx Watchdog Timer"
1646 depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
1647 select WATCHDOG_CORE
1649 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1652 tristate "IDT RC32434 SoC Watchdog Timer"
1653 depends on MIKROTIK_RB532
1655 Hardware driver for the IDT RC32434 SoC built-in
1658 To compile this driver as a module, choose M here: the
1659 module will be called rc32434_wdt.
1662 tristate "Indy/I2 Hardware Watchdog"
1663 depends on SGI_HAS_INDYDOG
1665 Hardware driver for the Indy's/I2's watchdog. This is a
1666 watchdog timer that will reboot the machine after a 60 second
1667 timer expired and no process has written to /dev/watchdog during
1671 tristate "Ingenic jz4740 SoC hardware watchdog"
1673 depends on COMMON_CLK
1674 select WATCHDOG_CORE
1677 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1680 tristate "MTX-1 Hardware Watchdog"
1681 depends on MIPS_MTX1 || (MIPS && COMPILE_TEST)
1683 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1684 will reboot the machine after a 100 seconds timer expired.
1687 tristate "PNX833x Hardware Watchdog"
1688 depends on SOC_PNX8335
1691 Hardware driver for the PNX833x's watchdog. This is a
1692 watchdog timer that will reboot the machine after a programmable
1693 timer has expired and no process has written to /dev/watchdog during
1697 tristate "Sibyte SoC hardware watchdog"
1698 depends on CPU_SB1 || (MIPS && COMPILE_TEST)
1700 Watchdog driver for the built in watchdog hardware in Sibyte
1701 SoC processors. There are apparently two watchdog timers
1702 on such processors; this driver supports only the first one,
1703 because currently Linux only supports exporting one watchdog
1706 To compile this driver as a loadable module, choose M here.
1707 The module will be called sb_wdog.
1710 tristate "TI AR7 Watchdog Timer"
1711 depends on AR7 || (MIPS && COMPILE_TEST)
1713 Hardware driver for the TI AR7 Watchdog Timer.
1716 tristate "Toshiba TXx9 Watchdog Timer"
1717 depends on CPU_TX39XX || CPU_TX49XX || (MIPS && COMPILE_TEST)
1718 select WATCHDOG_CORE
1720 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1723 tristate "Cavium OCTEON SOC family Watchdog Timer"
1724 depends on CAVIUM_OCTEON_SOC
1726 select WATCHDOG_CORE
1727 select EXPORT_UASM if OCTEON_WDT = m
1729 Hardware driver for OCTEON's on chip watchdog timer.
1730 Enables the watchdog for all cores running Linux. It
1731 installs a NMI handler and pokes the watchdog based on an
1732 interrupt. On first expiration of the watchdog, the
1733 interrupt handler pokes it. The second expiration causes an
1734 NMI that prints a message. The third expiration causes a
1737 When userspace has /dev/watchdog open, no poking is done
1738 from the first interrupt, it is then only poked when the
1742 tristate "Broadcom BCM63xx hardware watchdog"
1745 Watchdog driver for the built in watchdog hardware in Broadcom
1748 To compile this driver as a loadable module, choose M here.
1749 The module will be called bcm63xx_wdt.
1752 tristate "Broadcom BCM2835 hardware watchdog"
1753 depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
1754 select WATCHDOG_CORE
1756 Watchdog driver for the built in watchdog hardware in Broadcom
1759 To compile this driver as a loadable module, choose M here.
1760 The module will be called bcm2835_wdt.
1763 tristate "BCM Kona Watchdog"
1764 depends on ARCH_BCM_MOBILE || COMPILE_TEST
1765 select WATCHDOG_CORE
1767 Support for the watchdog timer on the following Broadcom BCM281xx
1768 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1771 Say 'Y' or 'M' here to enable the driver. The module will be called
1774 config BCM_KONA_WDT_DEBUG
1775 bool "DEBUGFS support for BCM Kona Watchdog"
1776 depends on BCM_KONA_WDT
1778 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1779 access to the driver's internal data structures as well as watchdog
1780 timer hardware registres.
1782 If in doubt, say 'N'.
1785 tristate "BCM7038 Watchdog"
1786 select WATCHDOG_CORE
1787 depends on HAS_IOMEM
1788 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
1790 Watchdog driver for the built-in hardware in Broadcom 7038 and
1791 later SoCs used in set-top boxes. BCM7038 was made public
1792 during the 2004 CES, and since then, many Broadcom chips use this
1793 watchdog block, including some cable modem chips.
1796 tristate "Imagination Technologies PDC Watchdog Timer"
1797 depends on HAS_IOMEM
1798 depends on MIPS || COMPILE_TEST
1799 select WATCHDOG_CORE
1801 Driver for Imagination Technologies PowerDown Controller
1804 To compile this driver as a loadable module, choose M here.
1805 The module will be called imgpdc_wdt.
1808 tristate "Lantiq SoC watchdog"
1810 select WATCHDOG_CORE
1812 Hardware driver for the Lantiq SoC Watchdog Timer.
1814 config LOONGSON1_WDT
1815 tristate "Loongson1 SoC hardware watchdog"
1816 depends on MACH_LOONGSON32
1817 select WATCHDOG_CORE
1819 Hardware driver for the Loongson1 SoC Watchdog Timer.
1822 tristate "Ralink SoC watchdog"
1823 select WATCHDOG_CORE
1826 Hardware driver for the Ralink SoC Watchdog Timer.
1829 tristate "Mediatek SoC watchdog"
1830 select WATCHDOG_CORE
1831 depends on SOC_MT7620 || SOC_MT7621
1833 Hardware driver for the Mediatek/Ralink MT7621/8 SoC Watchdog Timer.
1836 tristate "Microchip PIC32 hardware watchdog"
1837 select WATCHDOG_CORE
1838 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1840 Watchdog driver for the built in watchdog hardware in a PIC32.
1842 Configuration bits must be set appropriately for the watchdog to be
1843 controlled by this driver.
1845 To compile this driver as a loadable module, choose M here.
1846 The module will be called pic32-wdt.
1849 tristate "Microchip PIC32 Deadman Timer"
1850 select WATCHDOG_CORE
1851 depends on MACH_PIC32 || (MIPS && COMPILE_TEST)
1853 Watchdog driver for PIC32 instruction fetch counting timer. This specific
1854 timer is typically be used in misson critical and safety critical
1855 applications, where any single failure of the software functionality
1856 and sequencing must be detected.
1858 To compile this driver as a loadable module, choose M here.
1859 The module will be called pic32-dmt.
1861 # PARISC Architecture
1863 # POWERPC Architecture
1866 tristate "GE Watchdog Timer"
1869 Watchdog timer found in a number of GE single board computers.
1872 bool "MPC52xx Watchdog Timer"
1873 depends on PPC_MPC52xx || COMPILE_TEST
1875 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1878 tristate "MPC8xxx Platform Watchdog Timer"
1879 depends on PPC_8xx || PPC_83xx || PPC_86xx || PPC_MPC512x
1880 select WATCHDOG_CORE
1882 This driver is for a SoC level watchdog that exists on some
1883 Freescale PowerPC processors. So far this driver supports:
1888 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1891 tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
1892 depends on MV64X60 || COMPILE_TEST
1895 tristate "PIKA FPGA Watchdog"
1896 depends on WARP || (PPC64 && COMPILE_TEST)
1899 This enables the watchdog in the PIKA FPGA. Currently used on
1903 tristate "PowerPC Book-E Watchdog Timer"
1904 depends on BOOKE || 4xx
1905 select WATCHDOG_CORE
1907 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1908 MPC85xx SOCs and the IBM PowerPC 440.
1910 Please see Documentation/watchdog/watchdog-api.rst for
1913 config BOOKE_WDT_DEFAULT_TIMEOUT
1914 int "PowerPC Book-E Watchdog Timer Default Timeout"
1915 depends on BOOKE_WDT
1916 default 38 if PPC_FSL_BOOK3E
1917 range 0 63 if PPC_FSL_BOOK3E
1918 default 3 if !PPC_FSL_BOOK3E
1919 range 0 3 if !PPC_FSL_BOOK3E
1921 Select the default watchdog timer period to be used by the PowerPC
1922 Book-E watchdog driver. A watchdog "event" occurs when the bit
1923 position represented by this number transitions from zero to one.
1925 For Freescale Book-E processors, this is a number between 0 and 63.
1926 For other Book-E processors, this is a number between 0 and 3.
1928 The value can be overridden by the wdt_period command-line parameter.
1931 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1932 select WATCHDOG_CORE
1933 depends on GPIOLIB || COMPILE_TEST
1935 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1937 The driver can also be built as a module. If so, the module will be
1940 If unsure select N here.
1942 # PPC64 Architecture
1944 config WATCHDOG_RTAS
1945 tristate "RTAS watchdog"
1948 This driver adds watchdog support for the RTAS watchdog.
1950 To compile this driver as a module, choose M here. The module
1951 will be called wdrtas.
1955 config DIAG288_WATCHDOG
1956 tristate "System z diag288 Watchdog"
1958 select WATCHDOG_CORE
1960 IBM s/390 and zSeries machines running under z/VM 5.1 or later
1961 provide a virtual watchdog timer to their guest that cause a
1962 user define Control Program command to be executed after a
1964 LPAR provides a very similar interface. This driver handles
1967 To compile this driver as a module, choose M here. The module
1968 will be called diag288_wdt.
1970 # SUPERH (sh + sh64) Architecture
1973 tristate "SuperH Watchdog"
1974 depends on SUPERH && (CPU_SH3 || CPU_SH4 || COMPILE_TEST)
1975 select WATCHDOG_CORE
1977 This driver adds watchdog support for the integrated watchdog in the
1978 SuperH processors. If you have one of these processors and wish
1979 to have watchdog support enabled, say Y, otherwise say N.
1981 As a side note, saying Y here will automatically boost HZ to 1000
1982 so that the timer has a chance to clear the overflow counter. On
1983 slower systems (such as the SH-2 and SH-3) this will likely yield
1984 some performance issues. As such, the WDT should be avoided here
1985 unless it is absolutely necessary.
1987 To compile this driver as a module, choose M here: the
1988 module will be called shwdt.
1990 # SPARC Architecture
1992 # SPARC64 Architecture
1994 config WATCHDOG_CP1XXX
1995 tristate "CP1XXX Hardware Watchdog support"
1996 depends on SPARC64 && PCI
1998 This is the driver for the hardware watchdog timers present on
1999 Sun Microsystems CompactPCI models CP1400 and CP1500.
2001 To compile this driver as a module, choose M here: the
2002 module will be called cpwatchdog.
2004 If you do not have a CompactPCI model CP1400 or CP1500, or
2005 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
2006 you should say N to this option.
2009 tristate "RIO Hardware Watchdog support"
2010 depends on SPARC64 && PCI
2012 Say Y here to support the hardware watchdog capability on Sun RIO
2013 machines. The watchdog timeout period is normally one minute but
2014 can be changed with a boot-time parameter.
2016 config WATCHDOG_SUN4V
2017 tristate "Sun4v Watchdog support"
2018 select WATCHDOG_CORE
2021 Say Y here to support the hypervisor watchdog capability embedded
2022 in the SPARC sun4v architecture.
2024 To compile this driver as a module, choose M here. The module will
2025 be called sun4v_wdt.
2027 # XTENSA Architecture
2032 tristate "Xen Watchdog support"
2034 select WATCHDOG_CORE
2036 Say Y here to support the hypervisor watchdog capability provided
2037 by Xen 4.0 and newer. The watchdog timeout period is normally one
2038 minute but can be changed with a boot-time parameter.
2041 tristate "UML watchdog"
2042 depends on UML || COMPILE_TEST
2045 # ISA-based Watchdog Cards
2048 comment "ISA-based Watchdog Cards"
2052 tristate "Berkshire Products ISA-PC Watchdog"
2055 This is the driver for the Berkshire Products ISA-PC Watchdog card.
2056 This card simply watches your kernel to make sure it doesn't freeze,
2057 and if it does, it reboots your computer after a certain amount of
2058 time. This driver is like the WDT501 driver but for different
2059 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.rst>. The PC
2060 watchdog cards can be ordered from <http://www.berkprod.com/>.
2062 To compile this driver as a module, choose M here: the
2063 module will be called pcwd.
2065 Most people will say N.
2068 tristate "Mixcom Watchdog"
2071 This is a driver for the Mixcom hardware watchdog cards. This
2072 watchdog simply watches your kernel to make sure it doesn't freeze,
2073 and if it does, it reboots your computer after a certain amount of
2076 To compile this driver as a module, choose M here: the
2077 module will be called mixcomwd.
2079 Most people will say N.
2082 tristate "WDT Watchdog timer"
2085 If you have a WDT500P or WDT501P watchdog board, say Y here,
2086 otherwise N. It is not possible to probe for this board, which means
2087 that you have to inform the kernel about the IO port and IRQ that
2088 is needed (you can do this via the io and irq parameters)
2090 To compile this driver as a module, choose M here: the
2091 module will be called wdt.
2094 # PCI-based Watchdog Cards
2097 comment "PCI-based Watchdog Cards"
2100 config PCIPCWATCHDOG
2101 tristate "Berkshire Products PCI-PC Watchdog"
2104 This is the driver for the Berkshire Products PCI-PC Watchdog card.
2105 This card simply watches your kernel to make sure it doesn't freeze,
2106 and if it does, it reboots your computer after a certain amount of
2107 time. The card can also monitor the internal temperature of the PC.
2108 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
2110 To compile this driver as a module, choose M here: the
2111 module will be called pcwd_pci.
2113 Most people will say N.
2116 tristate "PCI-WDT500/501 Watchdog timer"
2119 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
2121 If you have a PCI-WDT501 watchdog board then you can enable the
2122 temperature sensor by setting the type parameter to 501.
2124 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
2125 can do this via the tachometer parameter. Only do this if you have a
2126 fan tachometer actually set up.
2128 To compile this driver as a module, choose M here: the
2129 module will be called wdt_pci.
2132 # USB-based Watchdog Cards
2135 comment "USB-based Watchdog Cards"
2138 config USBPCWATCHDOG
2139 tristate "Berkshire Products USB-PC Watchdog"
2142 This is the driver for the Berkshire Products USB-PC Watchdog card.
2143 This card simply watches your kernel to make sure it doesn't freeze,
2144 and if it does, it reboots your computer after a certain amount of
2145 time. The card can also monitor the internal temperature of the PC.
2146 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
2148 To compile this driver as a module, choose M here: the
2149 module will be called pcwd_usb.
2151 Most people will say N.