[WATCHDOG] Add support for SB1 hardware watchdog

Support watchdog timers built into SiByte MIPS SoCs.

Signed-off-by: Andy Sharp <andy.sharp@onstor.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index afcdc69e37d..591e3f39911 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -633,6 +633,19 @@ config WDT_RM9K_GPI
           To compile this driver as a module, choose M here: the
           module will be called rm9k_wdt.
 
+config SIBYTE_WDOG
+        tristate "Sibyte SoC hardware watchdog"
+        depends on CPU_SB1
+        help
+          Watchdog driver for the built in watchdog hardware in Sibyte
+          SoC processors.  There are apparently two watchdog timers
+          on such processors; this driver supports only the first one,
+          because currently Linux only supports exporting one watchdog
+          to userspace.
+
+          To compile this driver as a loadable module, choose M here.
+          The module will be called sb_wdog.
+
 config AR7_WDT
         tristate "TI AR7 Watchdog Timer"
         depends on AR7