watchdog: add support for the Synopsys DesignWare WDT

The Synopsys DesignWare watchdog is found in several ARM based systems
and provides a choice of 16 timeout periods depending on the clock
input.  The watchdog cannot be disabled once started.

Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 21d816e9dfa5..de78d0ab041f 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -186,6 +186,15 @@ config SA1100_WATCHDOG
           To compile this driver as a module, choose M here: the
           module will be called sa1100_wdt.
 
+config DW_WATCHDOG
+        tristate "Synopsys DesignWare watchdog"
+        depends on ARM && HAVE_CLK
+        help
+          Say Y here if to include support for the Synopsys DesignWare
+          watchdog timer found in many ARM chips.
+          To compile this driver as a module, choose M here: the
+          module will be called dw_wdt.
+
 config MPCORE_WATCHDOG
         tristate "MPcore watchdog"
         depends on HAVE_ARM_TWD