watchdog: iTCO-wdt: handle 5th variation for Apollo Lake

The Apollo Lake Watchdog has the no_reboot flag in the 4th bit.

Signed-off-by: Yong, Jonathan <jonathan.yong@intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/watchdog/iTCO_wdt.c b/drivers/watchdog/iTCO_wdt.c
index 0acc6c5f729d..54cab189a763 100644
--- a/drivers/watchdog/iTCO_wdt.c
+++ b/drivers/watchdog/iTCO_wdt.c
@@ -150,6 +150,7 @@ static inline u32 no_reboot_bit(void)
         u32 enable_bit;
 
         switch (iTCO_wdt_private.iTCO_version) {
+        case 5:
         case 3:
                 enable_bit = 0x00000010;
                 break;
@@ -512,6 +513,7 @@ static int iTCO_wdt_probe(struct platform_device *dev)
 
         /* Clear out the (probably old) status */
         switch (iTCO_wdt_private.iTCO_version) {
+        case 5:
         case 4:
                 outw(0x0008, TCO1_STS); /* Clear the Time Out Status bit */
                 outw(0x0002, TCO2_STS); /* Clear SECOND_TO_STS bit */