[WATCHDOG] Add support for WM831x watchdog

The WM831x series of devices provide a watchdog with configurable
behaviour on timer expiry.

Currently this driver support refreshes via a register or GPIO line and
autonomous refreshes from a hardware source (eg, a clock).

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 3229889c3591..ff3eb8ff6bd7 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -55,6 +55,13 @@ config SOFT_WATCHDOG
           To compile this driver as a module, choose M here: the
           module will be called softdog.
 
+config WM831X_WATCHDOG
+        tristate "WM831x watchdog"
+        depends on MFD_WM831X
+        help
+          Support for the watchdog in the WM831x AudioPlus PMICs.  When
+          the watchdog triggers the system will be reset.
+
 config WM8350_WATCHDOG
         tristate "WM8350 watchdog"
         depends on MFD_WM8350