2 # Watchdog device configuration
6 bool "Watchdog Timer Support"
8 If you say Y here (and to one of the following options) and create a
9 character special file /dev/watchdog with major number 10 and minor
10 number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
11 subsequently opening the file and then failing to write to it for
12 longer than 1 minute will result in rebooting the machine. This
13 could be useful for a networked machine that needs to come back
14 on-line as fast as possible after a lock-up. There's both a watchdog
15 implementation entirely in software (which can sometimes fail to
16 reboot the machine) and a driver for hardware watchdog boards, which
17 are more robust and can also keep track of the temperature inside
18 your computer. For details, read
19 <file:Documentation/watchdog/watchdog-api.txt> in the kernel source.
21 The watchdog is usually used together with the watchdog daemon
22 which is available from
23 <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can
24 also monitor NFS connections and can reboot the machine when the process
32 bool "WatchDog Timer Driver Core"
34 Say Y here if you want to use the new watchdog timer driver core.
35 This driver provides a framework for all watchdog timer drivers
36 and gives them the /dev/watchdog interface (and later also the
39 config WATCHDOG_NOWAYOUT
40 bool "Disable watchdog shutdown on close"
42 The default watchdog behaviour (which you get if you say N here) is
43 to stop the timer if the process managing it closes the file
44 /dev/watchdog. It's always remotely possible that this process might
45 get killed. If you say Y here, the watchdog cannot be stopped once
49 # General Watchdog drivers
52 comment "Watchdog Device Drivers"
54 # Architecture Independent
57 tristate "Software watchdog"
60 A software monitoring watchdog. This will fail to reboot your system
61 from some situations that the hardware watchdog will recover
62 from. Equally it's a lot cheaper to install.
64 To compile this driver as a module, choose M here: the
65 module will be called softdog.
67 config DA9052_WATCHDOG
68 tristate "Dialog DA9052 Watchdog"
69 depends on PMIC_DA9052
72 Support for the watchdog in the DA9052 PMIC. Watchdog trigger
75 Say Y here to include support for the DA9052 watchdog.
76 Alternatively say M to compile the driver as a module,
77 which will be called da9052_wdt.
79 config DA9055_WATCHDOG
80 tristate "Dialog Semiconductor DA9055 Watchdog"
84 If you say yes here you get support for watchdog on the Dialog
85 Semiconductor DA9055 PMIC.
87 This driver can also be built as a module. If so, the module
88 will be called da9055_wdt.
91 tristate "Watchdog device controlled through GPIO-line"
95 If you say yes here you get support for watchdog device
96 controlled through GPIO-line.
98 config WM831X_WATCHDOG
99 tristate "WM831x watchdog"
100 depends on MFD_WM831X
103 Support for the watchdog in the WM831x AudioPlus PMICs. When
104 the watchdog triggers the system will be reset.
106 config WM8350_WATCHDOG
107 tristate "WM8350 watchdog"
108 depends on MFD_WM8350
111 Support for the watchdog in the WM8350 AudioPlus PMIC. When
112 the watchdog triggers the system will be reset.
118 config ARM_SP805_WATCHDOG
119 tristate "ARM SP805 Watchdog"
120 depends on (ARM || ARM64) && ARM_AMBA
123 ARM Primecell SP805 Watchdog timer. This will reboot your system when
124 the timeout is reached.
126 config AT91RM9200_WATCHDOG
127 tristate "AT91RM9200 watchdog"
128 depends on ARCH_AT91RM9200
130 Watchdog timer embedded into AT91RM9200 chips. This will reboot your
131 system when the timeout is reached.
133 config AT91SAM9X_WATCHDOG
134 tristate "AT91SAM9X / AT91CAP9 watchdog"
135 depends on ARCH_AT91 && !ARCH_AT91RM9200
138 Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
139 reboot your system when the timeout is reached.
141 config 21285_WATCHDOG
142 tristate "DC21285 watchdog"
143 depends on FOOTBRIDGE
145 The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
146 here if you wish to use this. Alternatively say M to compile the
147 driver as a module, which will be called wdt285.
149 This driver does not work on all machines. In particular, early CATS
150 boards have hardware problems that will cause the machine to simply
151 lock up if the watchdog fires.
153 "If in doubt, leave it out" - say N.
156 tristate "NetWinder WB83C977 watchdog"
157 depends on FOOTBRIDGE && ARCH_NETWINDER
159 Say Y here to include support for the WB977 watchdog included in
160 NetWinder machines. Alternatively say M to compile the driver as
161 a module, which will be called wdt977.
163 Not sure? It's safe to say N.
165 config IXP4XX_WATCHDOG
166 tristate "IXP4xx Watchdog"
167 depends on ARCH_IXP4XX
169 Say Y here if to include support for the watchdog timer
170 in the Intel IXP4xx network processors. This driver can
171 be built as a module by choosing M. The module will
172 be called ixp4xx_wdt.
174 Note: The internal IXP4xx watchdog does a soft CPU reset
175 which doesn't reset any peripherals. There are circumstances
176 where the watchdog will fail to reset the board correctly
177 (e.g., if the boot ROM is in an unreadable state).
179 Say N if you are unsure.
181 config KS8695_WATCHDOG
182 tristate "KS8695 watchdog"
183 depends on ARCH_KS8695
185 Watchdog timer embedded into KS8695 processor. This will reboot your
186 system when the timeout is reached.
188 config HAVE_S3C2410_WATCHDOG
191 This will include watchdog timer support for Samsung SoCs. If
192 you want to include watchdog support for any machine, kindly
193 select this in the respective mach-XXXX/Kconfig file.
195 config S3C2410_WATCHDOG
196 tristate "S3C2410 Watchdog"
197 depends on HAVE_S3C2410_WATCHDOG
199 select MFD_SYSCON if ARCH_EXYNOS5
201 Watchdog timer block in the Samsung SoCs. This will reboot
202 the system when the timer expires with the watchdog enabled.
204 The driver is limited by the speed of the system's PCLK
205 signal, so with reasonably fast systems (PCLK around 50-66MHz)
206 then watchdog intervals of over approximately 20seconds are
209 The driver can be built as a module by choosing M, and will
210 be called s3c2410_wdt
212 config SA1100_WATCHDOG
213 tristate "SA1100/PXA2xx watchdog"
214 depends on ARCH_SA1100 || ARCH_PXA
216 Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
217 reboot your system when timeout is reached.
219 NOTE: once enabled, this timer cannot be disabled.
221 To compile this driver as a module, choose M here: the
222 module will be called sa1100_wdt.
225 tristate "Synopsys DesignWare watchdog"
228 Say Y here if to include support for the Synopsys DesignWare
229 watchdog timer found in many chips.
230 To compile this driver as a module, choose M here: the
231 module will be called dw_wdt.
233 config EP93XX_WATCHDOG
234 tristate "EP93xx Watchdog"
235 depends on ARCH_EP93XX
238 Say Y here if to include support for the watchdog timer
239 embedded in the Cirrus Logic EP93xx family of devices.
241 To compile this driver as a module, choose M here: the
242 module will be called ep93xx_wdt.
245 tristate "OMAP Watchdog"
246 depends on ARCH_OMAP16XX || ARCH_OMAP2PLUS
249 Support for TI OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog. Say 'Y'
250 here to enable the OMAP1610/OMAP1710/OMAP2420/OMAP3430/OMAP4430 watchdog timer.
252 config PNX4008_WATCHDOG
253 tristate "LPC32XX Watchdog"
254 depends on ARCH_LPC32XX
257 Say Y here if to include support for the watchdog timer
258 in the LPC32XX processor.
259 This driver can be built as a module by choosing M. The module
260 will be called pnx4008_wdt.
262 Say N if you are unsure.
265 tristate "IOP Watchdog"
267 select WATCHDOG_NOWAYOUT if (ARCH_IOP32X || ARCH_IOP33X)
269 Say Y here if to include support for the watchdog timer
270 in the Intel IOP3XX & IOP13XX I/O Processors. This driver can
271 be built as a module by choosing M. The module will
274 Note: The IOP13XX watchdog does an Internal Bus Reset which will
275 affect both cores and the peripherals of the IOP. The ATU-X
276 and/or ATUe configuration registers will remain intact, but if
277 operating as an Root Complex and/or Central Resource, the PCI-X
278 and/or PCIe busses will also be reset. THIS IS A VERY BIG HAMMER.
280 config DAVINCI_WATCHDOG
281 tristate "DaVinci watchdog"
282 depends on ARCH_DAVINCI || ARCH_KEYSTONE
285 Say Y here if to include support for the watchdog timer
286 in the DaVinci DM644x/DM646x or Keystone processors.
287 To compile this driver as a module, choose M here: the
288 module will be called davinci_wdt.
290 NOTE: once enabled, this timer cannot be disabled.
291 Say N if you are unsure.
293 config ORION_WATCHDOG
294 tristate "Orion watchdog"
295 depends on ARCH_ORION5X || ARCH_KIRKWOOD || ARCH_DOVE
298 Say Y here if to include support for the watchdog timer
299 in the Marvell Orion5x and Kirkwood ARM SoCs.
300 To compile this driver as a module, choose M here: the
301 module will be called orion_wdt.
303 config SUNXI_WATCHDOG
304 tristate "Allwinner SoCs watchdog support"
305 depends on ARCH_SUNXI
308 Say Y here to include support for the watchdog timer
310 To compile this driver as a module, choose M here: the
311 module will be called sunxi_wdt.
313 config COH901327_WATCHDOG
314 bool "ST-Ericsson COH 901 327 watchdog"
316 default y if MACH_U300
319 Say Y here to include Watchdog timer support for the
320 watchdog embedded into the ST-Ericsson U300 series platforms.
321 This watchdog is used to reset the system and thus cannot be
322 compiled as a module.
324 config TWL4030_WATCHDOG
325 tristate "TWL4030 Watchdog"
326 depends on TWL4030_CORE
329 Support for TI TWL4030 watchdog. Say 'Y' here to enable the
330 watchdog timer support for TWL4030 chips.
332 config STMP3XXX_RTC_WATCHDOG
333 tristate "Freescale STMP3XXX & i.MX23/28 watchdog"
334 depends on RTC_DRV_STMP
337 Say Y here to include support for the watchdog timer inside
338 the RTC for the STMP37XX/378X or i.MX23/28 SoC.
339 To compile this driver as a module, choose M here: the
340 module will be called stmp3xxx_rtc_wdt.
342 config NUC900_WATCHDOG
343 tristate "Nuvoton NUC900 watchdog"
344 depends on ARCH_W90X900
346 Say Y here if to include support for the watchdog timer
347 for the Nuvoton NUC900 series SoCs.
348 To compile this driver as a module, choose M here: the
349 module will be called nuc900_wdt.
351 config TS72XX_WATCHDOG
352 tristate "TS-72XX SBC Watchdog"
353 depends on MACH_TS72XX
355 Technologic Systems TS-7200, TS-7250 and TS-7260 boards have
356 watchdog timer implemented in a external CPLD chip. Say Y here
357 if you want to support for the watchdog timer on TS-72XX boards.
359 To compile this driver as a module, choose M here: the
360 module will be called ts72xx_wdt.
362 config MAX63XX_WATCHDOG
363 tristate "Max63xx watchdog"
364 depends on ARM && HAS_IOMEM
367 Support for memory mapped max63{69,70,71,72,73,74} watchdog timer.
370 tristate "IMX2+ Watchdog"
373 This is the driver for the hardware watchdog
374 on the Freescale IMX2 and later processors.
375 If you have one of these processors and wish to have
376 watchdog support enabled, say Y, otherwise say N.
378 To compile this driver as a module, choose M here: the
379 module will be called imx2_wdt.
381 config UX500_WATCHDOG
382 tristate "ST-Ericsson Ux500 watchdog"
383 depends on MFD_DB8500_PRCMU
387 Say Y here to include Watchdog timer support for the watchdog
388 existing in the prcmu of ST-Ericsson Ux500 series platforms.
390 To compile this driver as a module, choose M here: the
391 module will be called ux500_wdt.
394 tristate "Retu watchdog"
398 Retu watchdog driver for Nokia Internet Tablets (770, N800,
399 N810). At least on N800 the watchdog cannot be disabled, so
400 this driver is essential and you should enable it.
402 To compile this driver as a module, choose M here: the
403 module will be called retu_wdt.
406 tristate "MOXART watchdog"
407 depends on ARCH_MOXART
409 Say Y here to include Watchdog timer support for the watchdog
410 existing on the MOXA ART SoC series platforms.
412 To compile this driver as a module, choose M here: the
413 module will be called moxart_wdt.
415 config SIRFSOC_WATCHDOG
416 tristate "SiRFSOC watchdog"
421 Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When
422 the watchdog triggers the system will be reset.
426 config AT32AP700X_WDT
427 tristate "AT32AP700x watchdog"
428 depends on CPU_AT32AP700X
430 Watchdog timer embedded into AT32AP700x devices. This will reboot
431 your system when the timeout is reached.
433 # BLACKFIN Architecture
436 tristate "Blackfin On-Chip Watchdog Timer"
439 If you say yes here you will get support for the Blackfin On-Chip
440 Watchdog Timer. If you have one of these processors and wish to
441 have watchdog support enabled, say Y, otherwise say N.
443 To compile this driver as a module, choose M here: the
444 module will be called bfin_wdt.
450 # X86 (i386 + ia64 + x86_64) Architecture
453 tristate "Acquire SBC Watchdog Timer"
456 This is the driver for the hardware watchdog on Single Board
457 Computers produced by Acquire Inc (and others). This watchdog
458 simply watches your kernel to make sure it doesn't freeze, and if
459 it does, it reboots your computer after a certain amount of time.
461 To compile this driver as a module, choose M here: the
462 module will be called acquirewdt.
464 Most people will say N.
467 tristate "Advantech SBC Watchdog Timer"
470 If you are configuring a Linux kernel for the Advantech single-board
471 computer, say `Y' here to support its built-in watchdog timer
472 feature. More information can be found at
473 <http://www.advantech.com.tw/products/>
476 tristate "ALi M1535 PMU Watchdog Timer"
477 depends on X86 && PCI
479 This is the driver for the hardware watchdog on the ALi M1535 PMU.
481 To compile this driver as a module, choose M here: the
482 module will be called alim1535_wdt.
484 Most people will say N.
487 tristate "ALi M7101 PMU Computer Watchdog"
490 This is the driver for the hardware watchdog on the ALi M7101 PMU
491 as used in the x86 Cobalt servers and also found in some
492 SPARC Netra servers too.
494 To compile this driver as a module, choose M here: the
495 module will be called alim7101_wdt.
497 Most people will say N.
500 tristate "Fintek F71808E, F71862FG, F71869, F71882FG and F71889FG Watchdog"
503 This is the driver for the hardware watchdog on the Fintek
504 F71808E, F71862FG, F71869, F71882FG and F71889FG Super I/O controllers.
506 You can compile this driver directly into the kernel, or use
507 it as a module. The module will be called f71808e_wdt.
510 tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
511 depends on X86 && PCI
513 Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
514 (Total Cost of Ownership) timer is a watchdog timer that will reboot
515 the machine after its expiration. The expiration time can be
516 configured with the "heartbeat" parameter.
518 To compile this driver as a module, choose M here: the
519 module will be called sp5100_tco.
522 tristate "AMD Geode CS5535/CS5536 Watchdog"
523 depends on CS5535_MFGPT
525 This driver enables a watchdog capability built into the
526 CS5535/CS5536 companion chips for the AMD Geode GX and LX
527 processors. This watchdog watches your kernel to make sure
528 it doesn't freeze, and if it does, it reboots your computer after
529 a certain amount of time.
531 You can compile this driver directly into the kernel, or use
532 it as a module. The module will be called geodewdt.
535 tristate "AMD Elan SC520 processor Watchdog"
538 This is the driver for the hardware watchdog built in to the
539 AMD "Elan" SC520 microcomputer commonly used in embedded systems.
540 This watchdog simply watches your kernel to make sure it doesn't
541 freeze, and if it does, it reboots your computer after a certain
544 You can compile this driver directly into the kernel, or use
545 it as a module. The module will be called sc520_wdt.
547 config SBC_FITPC2_WATCHDOG
548 tristate "Compulab SBC-FITPC2 watchdog"
551 This is the driver for the built-in watchdog timer on the fit-PC2,
552 fit-PC2i, CM-iAM single-board computers made by Compulab.
554 It`s possible to enable watchdog timer either from BIOS (F2) or from booted Linux.
555 When "Watchdog Timer Value" enabled one can set 31-255 s operational range.
557 Entering BIOS setup temporary disables watchdog operation regardless to current state,
558 so system will not be restarted while user in BIOS setup.
560 Once watchdog was enabled the system will be restarted every
561 "Watchdog Timer Value" period, so to prevent it user can restart or
562 disable the watchdog.
564 To compile this driver as a module, choose M here: the
565 module will be called sbc_fitpc2_wdt.
567 Most people will say N.
570 tristate "Eurotech CPU-1220/1410 Watchdog Timer"
573 Enable support for the watchdog timer on the Eurotech CPU-1220 and
574 CPU-1410 cards. These are PC/104 SBCs. Spec sheets and product
575 information are at <http://www.eurotech.it/>.
578 tristate "IB700 SBC Watchdog Timer"
581 This is the driver for the hardware watchdog on the IB700 Single
582 Board Computer produced by TMC Technology (www.tmc-uk.com). This watchdog
583 simply watches your kernel to make sure it doesn't freeze, and if
584 it does, it reboots your computer after a certain amount of time.
586 This driver is like the WDT501 driver but for slightly different hardware.
588 To compile this driver as a module, choose M here: the
589 module will be called ib700wdt.
591 Most people will say N.
594 tristate "IBM Automatic Server Restart"
597 This is the driver for the IBM Automatic Server Restart watchdog
598 timer built-in into some eServer xSeries machines.
600 To compile this driver as a module, choose M here: the
601 module will be called ibmasr.
604 tristate "ICP Single Board Computer Watchdog Timer"
607 This is a driver for the hardware watchdog on the ICP Single
608 Board Computer. This driver is working on (at least) the following
609 IPC SBC's: Wafer 5823, Rocky 4783, Rocky 3703 and Rocky 3782.
611 To compile this driver as a module, choose M here: the
612 module will be called wafer5823wdt.
615 tristate "Intel 6300ESB Timer/Watchdog"
618 Hardware driver for the watchdog timer built into the Intel
619 6300ESB controller hub.
621 To compile this driver as a module, choose M here: the
622 module will be called i6300esb.
625 tristate "Intel Atom E6xx Watchdog"
626 depends on X86 && PCI
631 Hardware driver for the watchdog timer built into the Intel
632 Atom E6XX (TunnelCreek) processor.
634 To compile this driver as a module, choose M here: the
635 module will be called ie6xx_wdt.
637 config INTEL_SCU_WATCHDOG
638 bool "Intel SCU Watchdog for Mobile Platforms"
639 depends on X86_INTEL_MID
641 Hardware driver for the watchdog time built into the Intel SCU
642 for Intel Mobile Platforms.
644 To compile this driver as a module, choose M here.
647 tristate "Intel TCO Timer/Watchdog"
648 depends on (X86 || IA64) && PCI
652 Hardware driver for the intel TCO timer based watchdog devices.
653 These drivers are included in the Intel 82801 I/O Controller
654 Hub family (from ICH0 up to ICH10) and in the Intel 63xxESB
657 The TCO (Total Cost of Ownership) timer is a watchdog timer
658 that will reboot the machine after its second expiration. The
659 expiration time can be configured with the "heartbeat" parameter.
661 On some motherboards the driver may fail to reset the chipset's
662 NO_REBOOT flag which prevents the watchdog from rebooting the
663 machine. If this is the case you will get a kernel message like
664 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
666 To compile this driver as a module, choose M here: the
667 module will be called iTCO_wdt.
669 config ITCO_VENDOR_SUPPORT
670 bool "Intel TCO Timer/Watchdog Specific Vendor Support"
673 Add vendor specific support to the intel TCO timer based watchdog
674 devices. At this moment we only have additional support for some
675 SuperMicro Inc. motherboards.
678 tristate "IT8712F (Smart Guardian) Watchdog Timer"
681 This is the driver for the built-in watchdog timer on the IT8712F
682 Super I/0 chipset used on many motherboards.
684 If the driver does not work, then make sure that the game port in
687 To compile this driver as a module, choose M here: the
688 module will be called it8712f_wdt.
691 tristate "IT87 Watchdog Timer"
694 This is the driver for the hardware watchdog on the ITE IT8702,
695 IT8712, IT8716, IT8718, IT8720, IT8721, IT8726 and IT8728
698 If the driver does not work, then make sure that the game port in
701 This watchdog simply watches your kernel to make sure it doesn't
702 freeze, and if it does, it reboots your computer after a certain
705 To compile this driver as a module, choose M here: the module will
709 tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
710 depends on X86 && PCI
712 A software monitoring watchdog and NMI sourcing driver. This driver
713 will detect lockups and provide a stack trace. This is a driver that
714 will only load on an HP ProLiant system with a minimum of iLO2 support.
715 To compile this driver as a module, choose M here: the module will be
719 tristate "Kontron COM Watchdog Timer"
720 depends on MFD_KEMPLD
723 Support for the PLD watchdog on some Kontron ETX and COMexpress
726 This driver can also be built as a module. If so, the module will be
729 config HPWDT_NMI_DECODING
730 bool "NMI decoding support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
731 depends on HP_WATCHDOG
734 When an NMI occurs this feature will make the necessary BIOS calls to
735 log the cause of the NMI.
738 tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
741 This is a driver for National Semiconductor PC87307/PC97307 hardware
742 watchdog cards as found on the SC1200. This watchdog is mainly used
743 for power management purposes and can be used to power down the device
744 during inactivity periods (includes interrupt activity monitoring).
746 To compile this driver as a module, choose M here: the
747 module will be called sc1200wdt.
749 Most people will say N.
752 tristate "National Semiconductor SCx200 Watchdog"
753 depends on SCx200 && PCI
755 Enable the built-in watchdog timer support on the National
756 Semiconductor SCx200 processors.
758 If compiled as a module, it will be called scx200_wdt.
761 tristate "NS PC87413 watchdog"
764 This is the driver for the hardware watchdog on the PC87413 chipset
765 This watchdog simply watches your kernel to make sure it doesn't
766 freeze, and if it does, it reboots your computer after a certain
769 To compile this driver as a module, choose M here: the
770 module will be called pc87413_wdt.
772 Most people will say N.
775 tristate "nVidia TCO Timer/Watchdog"
776 depends on X86 && PCI
778 Hardware driver for the TCO timer built into the nVidia Hub family
779 (such as the MCP51). The TCO (Total Cost of Ownership) timer is a
780 watchdog timer that will reboot the machine after its second
781 expiration. The expiration time can be configured with the
782 "heartbeat" parameter.
784 On some motherboards the driver may fail to reset the chipset's
785 NO_REBOOT flag which prevents the watchdog from rebooting the
786 machine. If this is the case you will get a kernel message like
787 "failed to reset NO_REBOOT flag, reboot disabled by hardware".
789 To compile this driver as a module, choose M here: the
790 module will be called nv_tco.
793 tristate "RDC R-321x SoC watchdog"
794 depends on X86_RDC321X
796 This is the driver for the built in hardware watchdog
797 in the RDC R-321x SoC.
799 To compile this driver as a module, choose M here: the
800 module will be called rdc321x_wdt.
803 tristate "SBC-60XX Watchdog Timer"
806 This driver can be used with the watchdog timer found on some
807 single board computers, namely the 6010 PII based computer.
808 It may well work with other cards. It reads port 0x443 to enable
809 and re-set the watchdog timer, and reads port 0x45 to disable
810 the watchdog. If you have a card that behave in similar ways,
811 you can probably make this driver work with your card as well.
813 You can compile this driver directly into the kernel, or use
814 it as a module. The module will be called sbc60xxwdt.
817 tristate "SBC8360 Watchdog Timer"
821 This is the driver for the hardware watchdog on the SBC8360 Single
822 Board Computer produced by Axiomtek Co., Ltd. (www.axiomtek.com).
824 To compile this driver as a module, choose M here: the
825 module will be called sbc8360.
827 Most people will say N.
830 tristate "SBC Nano 7240 Watchdog Timer"
831 depends on X86_32 && !UML
833 This is the driver for the hardware watchdog found on the IEI
834 single board computers EPIC Nano 7240 (and likely others). This
835 watchdog simply watches your kernel to make sure it doesn't freeze,
836 and if it does, it reboots your computer after a certain amount of
839 To compile this driver as a module, choose M here: the
840 module will be called sbc7240_wdt.
843 tristate "SMA CPU5 Watchdog"
847 To compile this driver as a module, choose M here: the
848 module will be called cpu5wdt.
850 config SMSC_SCH311X_WDT
851 tristate "SMSC SCH311X Watchdog Timer"
854 This is the driver for the hardware watchdog timer on the
855 SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
856 (LPC IO with 8042 KBC, Reset Generation, HWM and multiple
859 To compile this driver as a module, choose M here: the
860 module will be called sch311x_wdt.
862 config SMSC37B787_WDT
863 tristate "Winbond SMsC37B787 Watchdog Timer"
866 This is the driver for the hardware watchdog component on the
867 Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
868 from Vision Systems and maybe others.
870 This watchdog simply watches your kernel to make sure it doesn't
871 freeze, and if it does, it reboots your computer after a certain
874 Usually a userspace daemon will notify the kernel WDT driver that
875 userspace is still alive, at regular intervals.
877 To compile this driver as a module, choose M here: the
878 module will be called smsc37b787_wdt.
880 Most people will say N.
883 tristate "VIA Watchdog Timer"
884 depends on X86 && PCI
887 This is the driver for the hardware watchdog timer on VIA
888 southbridge chipset CX700, VX800/VX820 or VX855/VX875.
890 To compile this driver as a module, choose M here; the module
891 will be called via_wdt.
893 Most people will say N.
896 tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
900 This is the driver for the hardware watchdog on the following
902 W83627DHG/DHG-P/EHF/EHG/F/G/HF/S/SF/THF/UHG/UG
912 This watchdog simply watches your kernel to make sure it doesn't
913 freeze, and if it does, it reboots your computer after a certain
916 To compile this driver as a module, choose M here: the
917 module will be called w83627hf_wdt.
919 Most people will say N.
922 tristate "W83697HF/W83697HG Watchdog Timer"
925 This is the driver for the hardware watchdog on the W83697HF/HG
926 chipset as used in Dedibox/VIA motherboards (and likely others).
927 This watchdog simply watches your kernel to make sure it doesn't
928 freeze, and if it does, it reboots your computer after a certain
931 To compile this driver as a module, choose M here: the
932 module will be called w83697hf_wdt.
934 Most people will say N.
937 tristate "W83697UG/W83697UF Watchdog Timer"
940 This is the driver for the hardware watchdog on the W83697UG/UF
941 chipset as used in MSI Fuzzy CX700 VIA motherboards (and likely others).
942 This watchdog simply watches your kernel to make sure it doesn't
943 freeze, and if it does, it reboots your computer after a certain
946 To compile this driver as a module, choose M here: the
947 module will be called w83697ug_wdt.
949 Most people will say N.
952 tristate "W83877F (EMACS) Watchdog Timer"
955 This is the driver for the hardware watchdog on the W83877F chipset
956 as used in EMACS PC-104 motherboards (and likely others). This
957 watchdog simply watches your kernel to make sure it doesn't freeze,
958 and if it does, it reboots your computer after a certain amount of
961 To compile this driver as a module, choose M here: the
962 module will be called w83877f_wdt.
964 Most people will say N.
967 tristate "W83977F (PCM-5335) Watchdog Timer"
970 This is the driver for the hardware watchdog on the W83977F I/O chip
971 as used in AAEON's PCM-5335 SBC (and likely others). This
972 watchdog simply watches your kernel to make sure it doesn't freeze,
973 and if it does, it reboots your computer after a certain amount of
976 To compile this driver as a module, choose M here: the
977 module will be called w83977f_wdt.
980 tristate "ZF MachZ Watchdog"
983 If you are using a ZF Micro MachZ processor, say Y here, otherwise
984 N. This is the driver for the watchdog timer built-in on that
985 processor using ZF-Logic interface. This watchdog simply watches
986 your kernel to make sure it doesn't freeze, and if it does, it
987 reboots your computer after a certain amount of time.
989 To compile this driver as a module, choose M here: the
990 module will be called machzwd.
992 config SBC_EPX_C3_WATCHDOG
993 tristate "Winsystems SBC EPX-C3 watchdog"
996 This is the driver for the built-in watchdog timer on the EPX-C3
997 Single-board computer made by Winsystems, Inc.
999 *Note*: This hardware watchdog is not probeable and thus there
1000 is no way to know if writing to its IO address will corrupt
1001 your system or have any real effect. The only way to be sure
1002 that this driver does what you want is to make sure you
1003 are running it on an EPX-C3 from Winsystems with the watchdog
1004 timer at IO address 0x1ee and 0x1ef. It will write to both those
1005 IO ports. Basically, the assumption is made that if you compile
1006 this driver into your kernel and/or load it as a module, that you
1007 know what you are doing and that you are in fact running on an
1010 To compile this driver as a module, choose M here: the
1011 module will be called sbc_epx_c3.
1017 config M54xx_WATCHDOG
1018 tristate "MCF54xx watchdog support"
1021 To compile this driver as a module, choose M here: the
1022 module will be called m54xx_wdt.
1024 # MicroBlaze Architecture
1026 config XILINX_WATCHDOG
1027 tristate "Xilinx Watchdog timer"
1028 depends on MICROBLAZE
1030 Watchdog driver for the xps_timebase_wdt ip core.
1032 IMPORTANT: The xps_timebase_wdt parent must have the property
1033 "clock-frequency" at device tree.
1035 To compile this driver as a module, choose M here: the
1036 module will be called of_xilinx_wdt.
1041 tristate "Atheros AR71XX/AR724X/AR913X hardware watchdog"
1044 Hardware driver for the built-in watchdog timer on the Atheros
1045 AR71XX/AR724X/AR913X SoCs.
1048 tristate "Broadcom BCM47xx Watchdog Timer"
1050 select WATCHDOG_CORE
1052 Hardware driver for the Broadcom BCM47xx Watchdog Timer.
1055 tristate "IDT RC32434 SoC Watchdog Timer"
1056 depends on MIKROTIK_RB532
1058 Hardware driver for the IDT RC32434 SoC built-in
1061 To compile this driver as a module, choose M here: the
1062 module will be called rc32434_wdt.
1065 tristate "Indy/I2 Hardware Watchdog"
1066 depends on SGI_HAS_INDYDOG
1068 Hardware driver for the Indy's/I2's watchdog. This is a
1069 watchdog timer that will reboot the machine after a 60 second
1070 timer expired and no process has written to /dev/watchdog during
1074 tristate "Ingenic jz4740 SoC hardware watchdog"
1075 depends on MACH_JZ4740
1076 select WATCHDOG_CORE
1078 Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs.
1081 tristate "MTX-1 Hardware Watchdog"
1082 depends on MIPS_MTX1
1084 Hardware driver for the MTX-1 boards. This is a watchdog timer that
1085 will reboot the machine after a 100 seconds timer expired.
1088 tristate "PNX833x Hardware Watchdog"
1089 depends on SOC_PNX8335
1091 Hardware driver for the PNX833x's watchdog. This is a
1092 watchdog timer that will reboot the machine after a programmable
1093 timer has expired and no process has written to /dev/watchdog during
1097 tristate "Sibyte SoC hardware watchdog"
1100 Watchdog driver for the built in watchdog hardware in Sibyte
1101 SoC processors. There are apparently two watchdog timers
1102 on such processors; this driver supports only the first one,
1103 because currently Linux only supports exporting one watchdog
1106 To compile this driver as a loadable module, choose M here.
1107 The module will be called sb_wdog.
1110 tristate "TI AR7 Watchdog Timer"
1113 Hardware driver for the TI AR7 Watchdog Timer.
1116 tristate "Toshiba TXx9 Watchdog Timer"
1117 depends on CPU_TX39XX || CPU_TX49XX
1118 select WATCHDOG_CORE
1120 Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
1123 tristate "Cavium OCTEON SOC family Watchdog Timer"
1124 depends on CAVIUM_OCTEON_SOC
1126 select EXPORT_UASM if OCTEON_WDT = m
1128 Hardware driver for OCTEON's on chip watchdog timer.
1129 Enables the watchdog for all cores running Linux. It
1130 installs a NMI handler and pokes the watchdog based on an
1131 interrupt. On first expiration of the watchdog, the
1132 interrupt handler pokes it. The second expiration causes an
1133 NMI that prints a message. The third expiration causes a
1136 When userspace has /dev/watchdog open, no poking is done
1137 from the first interrupt, it is then only poked when the
1141 tristate "Broadcom BCM63xx hardware watchdog"
1144 Watchdog driver for the built in watchdog hardware in Broadcom
1147 To compile this driver as a loadable module, choose M here.
1148 The module will be called bcm63xx_wdt.
1151 tristate "Broadcom BCM2835 hardware watchdog"
1152 depends on ARCH_BCM2835
1153 select WATCHDOG_CORE
1155 Watchdog driver for the built in watchdog hardware in Broadcom
1158 To compile this driver as a loadable module, choose M here.
1159 The module will be called bcm2835_wdt.
1162 tristate "BCM Kona Watchdog"
1164 select WATCHDOG_CORE
1166 Support for the watchdog timer on the following Broadcom BCM281xx
1167 family, which includes BCM11130, BCM11140, BCM11351, BCM28145 and
1170 Say 'Y' or 'M' here to enable the driver. The module will be called
1173 config BCM_KONA_WDT_DEBUG
1174 bool "DEBUGFS support for BCM Kona Watchdog"
1175 depends on BCM_KONA_WDT
1177 If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
1178 access to the driver's internal data structures as well as watchdog
1179 timer hardware registres.
1181 If in doubt, say 'N'.
1184 tristate "Lantiq SoC watchdog"
1187 Hardware driver for the Lantiq SoC Watchdog Timer.
1190 tristate "Ralink SoC watchdog"
1191 select WATCHDOG_CORE
1194 Hardware driver for the Ralink SoC Watchdog Timer.
1196 # PARISC Architecture
1198 # POWERPC Architecture
1201 tristate "GE Watchdog Timer"
1204 Watchdog timer found in a number of GE single board computers.
1207 bool "MPC52xx Watchdog Timer"
1208 depends on PPC_MPC52xx
1210 Use General Purpose Timer (GPT) 0 on the MPC5200 as Watchdog.
1213 tristate "MPC8xxx Platform Watchdog Timer"
1214 depends on PPC_8xx || PPC_83xx || PPC_86xx
1215 select WATCHDOG_CORE
1217 This driver is for a SoC level watchdog that exists on some
1218 Freescale PowerPC processors. So far this driver supports:
1223 For BookE processors (MPC85xx) use the BOOKE_WDT driver instead.
1226 tristate "MV64X60 (Marvell Discovery) Watchdog Timer"
1230 tristate "PIKA FPGA Watchdog"
1234 This enables the watchdog in the PIKA FPGA. Currently used on
1238 tristate "PowerPC Book-E Watchdog Timer"
1239 depends on BOOKE || 4xx
1240 select WATCHDOG_CORE
1242 Watchdog driver for PowerPC Book-E chips, such as the Freescale
1243 MPC85xx SOCs and the IBM PowerPC 440.
1245 Please see Documentation/watchdog/watchdog-api.txt for
1248 config BOOKE_WDT_DEFAULT_TIMEOUT
1249 int "PowerPC Book-E Watchdog Timer Default Timeout"
1250 depends on BOOKE_WDT
1251 default 38 if PPC_FSL_BOOK3E
1252 range 0 63 if PPC_FSL_BOOK3E
1253 default 3 if !PPC_FSL_BOOK3E
1254 range 0 3 if !PPC_FSL_BOOK3E
1256 Select the default watchdog timer period to be used by the PowerPC
1257 Book-E watchdog driver. A watchdog "event" occurs when the bit
1258 position represented by this number transitions from zero to one.
1260 For Freescale Book-E processors, this is a number between 0 and 63.
1261 For other Book-E processors, this is a number between 0 and 3.
1263 The value can be overridden by the wdt_period command-line parameter.
1266 tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
1267 select WATCHDOG_CORE
1270 Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
1272 The driver can also be built as a module. If so, the module will be
1275 If unsure select N here.
1277 # PPC64 Architecture
1279 config WATCHDOG_RTAS
1280 tristate "RTAS watchdog"
1283 This driver adds watchdog support for the RTAS watchdog.
1285 To compile this driver as a module, choose M here. The module
1286 will be called wdrtas.
1291 tristate "z/VM Watchdog Timer"
1294 IBM s/390 and zSeries machines running under z/VM 5.1 or later
1295 provide a virtual watchdog timer to their guest that cause a
1296 user define Control Program command to be executed after a
1299 To compile this driver as a module, choose M here. The module
1300 will be called vmwatchdog.
1302 # SUPERH (sh + sh64) Architecture
1305 tristate "SuperH Watchdog"
1306 depends on SUPERH && (CPU_SH3 || CPU_SH4)
1307 select WATCHDOG_CORE
1309 This driver adds watchdog support for the integrated watchdog in the
1310 SuperH processors. If you have one of these processors and wish
1311 to have watchdog support enabled, say Y, otherwise say N.
1313 As a side note, saying Y here will automatically boost HZ to 1000
1314 so that the timer has a chance to clear the overflow counter. On
1315 slower systems (such as the SH-2 and SH-3) this will likely yield
1316 some performance issues. As such, the WDT should be avoided here
1317 unless it is absolutely necessary.
1319 To compile this driver as a module, choose M here: the
1320 module will be called shwdt.
1322 # SPARC Architecture
1324 # SPARC64 Architecture
1326 config WATCHDOG_CP1XXX
1327 tristate "CP1XXX Hardware Watchdog support"
1328 depends on SPARC64 && PCI
1330 This is the driver for the hardware watchdog timers present on
1331 Sun Microsystems CompactPCI models CP1400 and CP1500.
1333 To compile this driver as a module, choose M here: the
1334 module will be called cpwatchdog.
1336 If you do not have a CompactPCI model CP1400 or CP1500, or
1337 another UltraSPARC-IIi-cEngine boardset with hardware watchdog,
1338 you should say N to this option.
1341 tristate "RIO Hardware Watchdog support"
1342 depends on SPARC64 && PCI
1344 Say Y here to support the hardware watchdog capability on Sun RIO
1345 machines. The watchdog timeout period is normally one minute but
1346 can be changed with a boot-time parameter.
1348 # XTENSA Architecture
1353 tristate "Xen Watchdog support"
1356 Say Y here to support the hypervisor watchdog capability provided
1357 by Xen 4.0 and newer. The watchdog timeout period is normally one
1358 minute but can be changed with a boot-time parameter.
1361 tristate "UML watchdog"
1365 # ISA-based Watchdog Cards
1368 comment "ISA-based Watchdog Cards"
1372 tristate "Berkshire Products ISA-PC Watchdog"
1375 This is the driver for the Berkshire Products ISA-PC Watchdog card.
1376 This card simply watches your kernel to make sure it doesn't freeze,
1377 and if it does, it reboots your computer after a certain amount of
1378 time. This driver is like the WDT501 driver but for different
1379 hardware. Please read <file:Documentation/watchdog/pcwd-watchdog.txt>. The PC
1380 watchdog cards can be ordered from <http://www.berkprod.com/>.
1382 To compile this driver as a module, choose M here: the
1383 module will be called pcwd.
1385 Most people will say N.
1388 tristate "Mixcom Watchdog"
1391 This is a driver for the Mixcom hardware watchdog cards. This
1392 watchdog simply watches your kernel to make sure it doesn't freeze,
1393 and if it does, it reboots your computer after a certain amount of
1396 To compile this driver as a module, choose M here: the
1397 module will be called mixcomwd.
1399 Most people will say N.
1402 tristate "WDT Watchdog timer"
1405 If you have a WDT500P or WDT501P watchdog board, say Y here,
1406 otherwise N. It is not possible to probe for this board, which means
1407 that you have to inform the kernel about the IO port and IRQ that
1408 is needed (you can do this via the io and irq parameters)
1410 To compile this driver as a module, choose M here: the
1411 module will be called wdt.
1414 # PCI-based Watchdog Cards
1417 comment "PCI-based Watchdog Cards"
1420 config PCIPCWATCHDOG
1421 tristate "Berkshire Products PCI-PC Watchdog"
1424 This is the driver for the Berkshire Products PCI-PC Watchdog card.
1425 This card simply watches your kernel to make sure it doesn't freeze,
1426 and if it does, it reboots your computer after a certain amount of
1427 time. The card can also monitor the internal temperature of the PC.
1428 More info is available at <http://www.berkprod.com/pci_pc_watchdog.htm>.
1430 To compile this driver as a module, choose M here: the
1431 module will be called pcwd_pci.
1433 Most people will say N.
1436 tristate "PCI-WDT500/501 Watchdog timer"
1439 If you have a PCI-WDT500/501 watchdog board, say Y here, otherwise N.
1441 If you have a PCI-WDT501 watchdog board then you can enable the
1442 temperature sensor by setting the type parameter to 501.
1444 If you want to enable the Fan Tachometer on the PCI-WDT501, then you
1445 can do this via the tachometer parameter. Only do this if you have a
1446 fan tachometer actually set up.
1448 To compile this driver as a module, choose M here: the
1449 module will be called wdt_pci.
1452 # USB-based Watchdog Cards
1455 comment "USB-based Watchdog Cards"
1458 config USBPCWATCHDOG
1459 tristate "Berkshire Products USB-PC Watchdog"
1462 This is the driver for the Berkshire Products USB-PC Watchdog card.
1463 This card simply watches your kernel to make sure it doesn't freeze,
1464 and if it does, it reboots your computer after a certain amount of
1465 time. The card can also monitor the internal temperature of the PC.
1466 More info is available at <http://www.berkprod.com/usb_pc_watchdog.htm>.
1468 To compile this driver as a module, choose M here: the
1469 module will be called pcwd_usb.
1471 Most people will say N.