On 9/13/24 10:45, Nick Chan wrote:
The Apple A8X SoC seems to be slowest at resetting, taking up to around
125ms to reset. Wait 150ms to be safe here.
Signed-off-by: Nick Chan <towinchenmi@xxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/watchdog/apple_wdt.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/watchdog/apple_wdt.c b/drivers/watchdog/apple_wdt.c
index d4f739932f0b..353ecf0b04dc 100644
--- a/drivers/watchdog/apple_wdt.c
+++ b/drivers/watchdog/apple_wdt.c
@@ -127,11 +127,11 @@ static int apple_wdt_restart(struct watchdog_device *wdd, unsigned long mode,
/*
* Flush writes and then wait for the SoC to reset. Even though the
* reset is queued almost immediately experiments have shown that it
- * can take up to ~20-25ms until the SoC is actually reset. Just wait
- * 50ms here to be safe.
+ * can take up to ~120-125ms until the SoC is actually reset. Just
+ * wait 150ms here to be safe.
*/
(void)readl_relaxed(wdt->regs + APPLE_WDT_WD1_CUR_TIME);
- mdelay(50);
+ mdelay(150);
return 0;
}
base-commit: 5acd9952f95fb4b7da6d09a3be39195a80845eb6
