Add sun4v_wdt watchdog driver

This driver adds sparc hypervisor watchdog support. The default
timeout is 60 seconds and the range is between 1 and
31536000 seconds. Both watchdog-resolution and
watchdog-max-timeout MD properties settings are supported.

Signed-off-by: Wim Coekaerts <wim.coekaerts@oracle.com>
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 4f0e7be0da34..30d38ae685f6 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1565,6 +1565,17 @@ config WATCHDOG_RIO
           machines.  The watchdog timeout period is normally one minute but
           can be changed with a boot-time parameter.
 
+config WATCHDOG_SUN4V
+        tristate "Sun4v Watchdog support"
+        select WATCHDOG_CORE
+        depends on SPARC64
+        help
+          Say Y here to support the hypervisor watchdog capability embedded
+          in the SPARC sun4v architecture.
+
+          To compile this driver as a module, choose M here. The module will
+          be called sun4v_wdt.
+
 # XTENSA Architecture
 
 # Xen Architecture