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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>
hifive-unleashed-5.1
Yong, Jonathan 2016-06-17 00:33:31 +00:00 committed by Wim Van Sebroeck
parent fafdbabaf5
commit 3b3a1c8fbb
1 changed files with 2 additions and 0 deletions
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2
drivers/watchdog/iTCO_wdt.c
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@ -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 */