path: root/drivers/watchdog/Kconfig

#
# Watchdog device configuration
#

menuconfig WATCHDOG
	bool "Watchdog Timer Support"
	---help---
	  If you say Y here (and to one of the following options) and create a
	  character special file /dev/watchdog with major number 10 and minor
	  number 130 using mknod ("man mknod"), you will get a watchdog, i.e.:
	  subsequently opening the file and then failing to write to it for
	  longer than 1 minute will result in rebooting the machine. This
	  could be useful for a networked machine that needs to come back
	  on-line as fast as possible after a lock-up. There's both a watchdog
	  implementation entirely in software (which can sometimes fail to
	  reboot the machine) and a driver for hardware watchdog boards, which
	  are more robust and can also keep track of the temperature inside
	  your computer. For details, read
	  <file:Documentation/watchdog/watchdog-api.txt> in the kernel source.

	  The watchdog is usually used together with the watchdog daemon
	  which is available from
	  <ftp://ibiblio.org/pub/Linux/system/daemons/watchdog/>. This daemon can
	  also monitor NFS connections and can reboot the machine when the process
	  table is full.

	  If unsure, say N.

if WATCHDOG

config WATCHDOG_NOWAYOUT
	bool "Disable watchdog shutdown on close"
	help
	  The default watchdog behaviour (which you get if you say N here) is
	  to stop the timer if the process managing it closes the file
	  /dev/watchdog. It's always remotely possible that this process might
	  get killed. If you say Y here, the watchdog cannot be stopped once
	  it has been started.

#
# General Watchdog drivers
#

comment "Watchdog Device Drivers"

# Architecture Independent

config SOFT_WATCHDOG
	tristate "Software watchdog"
	help
	  A software monitoring watchdog. This will fail to reboot your system
	  from some situations that the hardware watchdog will recover
	  from. Equally it's a lot cheaper to install.

	  To compile this driver as a module, choose M here: the
	  module will be called softdog.

config WM831X_WATCHDOG
	tristate "WM831x watchdog"
	depends on MFD_WM831X
	help
	  Support for the watchdog in the WM831x AudioPlus PMICs.  When
	  the watchdog triggers the system will be reset.

config WM8350_WATCHDOG
	tristate "WM8350 watchdog"
	depends on MFD_WM8350
	help
	  Support for the watchdog in the WM8350 AudioPlus PMIC.  When
	  the watchdog triggers the system will be reset.

# ALPHA Architecture

# ARM Architecture

config ARM_SP805_WATCHDOG
	tristate "ARM SP805 Watchdog"
	depends on ARM_AMBA
	help
	  ARM Primecell SP805 Watchdog timer. This will reboot your system when
	  the timeout is reached.

config AT91RM9200_WATCHDOG
	tristate "AT91RM9200 watchdog"
	depends on ARCH_AT91RM9200
	help
	  Watchdog timer embedded into AT91RM9200 chips. This will reboot your
	  system when the timeout is reached.

config AT91SAM9X_WATCHDOG
	tristate "AT91SAM9X / AT91CAP9 watchdog"
	depends on ARCH_AT91 && !ARCH_AT91RM9200
	help
	  Watchdog timer embedded into AT91SAM9X and AT91CAP9 chips. This will
	  reboot your system when the timeout is reached.

config 21285_WATCHDOG
	tristate "DC21285 watchdog"
	depends on FOOTBRIDGE
	help
	  The Intel Footbridge chip contains a built-in watchdog circuit. Say Y
	  here if you wish to use this. Alternatively say M to compile the
	  driver as a module, which will be called wdt285.

	  This driver does not work on all machines. In particular, early CATS
	  boards have hardware problems that will cause the machine to simply
	  lock up if the watchdog fires.

	  "If in doubt, leave it out" - say N.

config 977_WATCHDOG
	tristate "NetWinder WB83C977 watchdog"
	depends on FOOTBRIDGE && ARCH_NETWINDER
	help
	  Say Y here to include support for the WB977 watchdog included in
	  NetWinder machines. Alternatively say M to compile the driver as
	  a module, which will be called wdt977.

	  Not sure? It's safe to say N.

config IXP2000_WATCHDOG
	tristate "IXP2000 Watchdog"
	depends on ARCH_IXP2000
	help
	  Say Y here if to include support for the watchdog timer
	  in the Intel IXP2000(2400, 2800, 2850) network processors.
	  This driver can be built as a module by choosing M. The module
	  will be called ixp2000_wdt.

	  Say N if you are unsure.

config IXP4XX_WATCHDOG
	tristate "IXP4xx Watchdog"
	depends on ARCH_IXP4XX
	help
	  Say Y here if to include support for the watchdog timer
	  in the Intel IXP4xx network processors. This driver can
	  be built as a module by choosing M. The module will
	  be called ixp4xx_wdt.

	  Note: The internal IXP4xx watchdog does a soft CPU reset
	  which doesn't reset any peripherals. There are circumstances
	  where the watchdog will fail to reset the board correctly
	  (e.g., if the boot ROM is in an unreadable state).

	  Say N if you are unsure.

config KS8695_WATCHDOG
	tristate "KS8695 watchdog"
	depends on ARCH_KS8695
	help
	  Watchdog timer embedded into KS8695 processor. This will reboot your
	  system when the timeout is reached.

config HAVE_S3C2410_WATCHDOG
	bool
	help
	  This will include watchdog timer support for Samsung SoCs. If
	  you want to include watchdog support for any machine, kindly
	  select this in the respective mach-XXXX/Kconfig file.

config S3C2410_WATCHDOG
	tristate "S3C2410 Watchdog"
	depends on ARCH_S3C2410 || HAVE_S3C2410_WATCHDOG
	help
	  Watchdog timer block in the Samsung SoCs. This will reboot
	  the system when the timer expires with the watchdog enabled.

	  The driver is limited by the speed of the system's PCLK
	  signal, so with reasonably fast systems (PCLK around 50-66MHz)
	  then watchdog intervals of over approximately 20seconds are
	  unavailable.

	  The driver can be built as a module by choosing M, and will
	  be called s3c2410_wdt

config SA1100_WATCHDOG
	tristate "SA1100/PXA2xx watchdog"
	depends on ARCH_SA1100 || ARCH_PXA
	help
	  Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
	  reboot your system when timeout is reached.

	  NOTE: once enabled, this timer cannot be disabled.

	  To compile this driver as a module, choose M here: the
	  module will be called sa1100_wdt.

config MPCORE_WATCHDOG
	tristate "MPcore watchdog"
	depends on HAVE_ARM_TWD
	help
	  Watchdog timer embedded into the MPcore system.

	  To compile this driver as a module, choose M here: the
	  module will be called mpcore_wdt.

config EP93XX_WATCHDOG
	tristate "EP93xx Watchdog"
	depends on ARCH_EP93XX
	help
	  Say Y here if to include support for the watchdog timer
	  embedded in the Cirrus Logic EP93xx family of devices.

	  To compile this driver as a module, choose M here: the
	  module will be called ep93xx_wdt.