watchdog: it87_wdt: Add support for watchdogs with 8b timers

[firefly-linux-kernel-4.4.55.git] / drivers / watchdog / Kconfig

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 24efd8ea41bb04bab6830cfddfd2281881ec9ae7..5a5c024482faa3cf06aff4e0380dab5ce7021bf8 100644 (file)
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -565,10 +565,11 @@ config IT87_WDT
        tristate "IT87 Watchdog Timer"
        depends on X86 && EXPERIMENTAL
        ---help---
-         This is the driver for the hardware watchdog on the ITE IT8716,
-         IT8718, IT8726, IT8712(Version J,K) Super I/O chips. This watchdog
-         simply watches your kernel to make sure it doesn't freeze, and if
-         it does, it reboots your computer after a certain amount of time.
+         This is the driver for the hardware watchdog on the ITE IT8702,
+         IT8712, IT8716, IT8718, IT8720, IT8726, IT8712 Super I/O chips.
+         This watchdog simply watches your kernel to make sure it doesn't
+         freeze, and if it does, it reboots your computer after a certain
+         amount of time.
 
          To compile this driver as a module, choose M here: the module will
          be called it87_wdt.
@@ -957,12 +958,32 @@ config PIKA_WDT
          the Warp platform.
 
 config BOOKE_WDT
-       bool "PowerPC Book-E Watchdog Timer"
+       tristate "PowerPC Book-E Watchdog Timer"
        depends on BOOKE || 4xx
        ---help---
+         Watchdog driver for PowerPC Book-E chips, such as the Freescale
+         MPC85xx SOCs and the IBM PowerPC 440.
+
          Please see Documentation/watchdog/watchdog-api.txt for
          more information.
 
+config BOOKE_WDT_DEFAULT_TIMEOUT
+       int "PowerPC Book-E Watchdog Timer Default Timeout"
+       depends on BOOKE_WDT
+       default 38 if FSL_BOOKE
+       range 0 63 if FSL_BOOKE
+       default 3 if !FSL_BOOKE
+       range 0 3 if !FSL_BOOKE
+       help
+         Select the default watchdog timer period to be used by the PowerPC
+         Book-E watchdog driver.  A watchdog "event" occurs when the bit
+         position represented by this number transitions from zero to one.
+
+         For Freescale Book-E processors, this is a number between 0 and 63.
+         For other Book-E processors, this is a number between 0 and 3.
+
+         The value can be overidden by the wdt_period command-line parameter.
+
 # PPC64 Architecture
 
 config WATCHDOG_RTAS