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-rw-r--r--drivers/watchdog/Kconfig22
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