1 files changed, 21 insertions, 1 deletions

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 24efd8ea41bb..c356146bd712 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -957,12 +957,32 @@ 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