arm, at91, wdt: make timeout configurable

make the HW WDT timeout configurable through the define
CONFIG_AT91_HW_WDT_TIMEOUT.

Signed-off-by: Heiko Schocher <hs@denx.de>

diff --git a/README b/README
index a435c8b2fa7ce054530002b7d5d8f20f197710ad..353d8db50062b9a19422126be344e189d7394a4c 100644 (file)
--- a/README
+++ b/README
@@ -1257,6 +1257,9 @@ The following options need to be configured:
                SoC, then define this variable and provide board
                specific code for the "hw_watchdog_reset" function.
 
+               CONFIG_AT91_HW_WDT_TIMEOUT
+               specify the timeout in seconds. default 2 seconds.
+
 - U-Boot Version:
                CONFIG_VERSION_VARIABLE
                If this variable is defined, an environment variable

diff --git a/drivers/watchdog/at91sam9_wdt.c b/drivers/watchdog/at91sam9_wdt.c
index ffd49a2befbb24a59747533c5960741a0ae14f05..03c786c53bd0db59b66aed4e0a6d4ecdde0bd2f2 100644 (file)
--- a/drivers/watchdog/at91sam9_wdt.c
+++ b/drivers/watchdog/at91sam9_wdt.c
@@ -30,7 +30,11 @@
 #define ticks_to_ms(t) (((t + 1) * 1000) >> 8)
 
 /* Hardware timeout in seconds */
+#if !defined(CONFIG_AT91_HW_WDT_TIMEOUT)
 #define WDT_HW_TIMEOUT 2
+#else
+#define WDT_HW_TIMEOUT CONFIG_AT91_HW_WDT_TIMEOUT
+#endif
 
 /*
  * Set the watchdog time interval in 1/256Hz (write-once)