i have two question, pls give me some advice.
1. the wdt max timeout value,
i check the manual, it seems to be 128s (WCR_WT)
but when i set a longer timeout value, it can reset system in my set time value.
about this, do i mistake something?
2.i want to keep wdt work in low power mode.
so i tried the follow action.
static inline void imx2_wdt_setup(struct watchdog_device *wdog)
struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);
regmap_read(wdev->regmap, IMX2_WDT_WCR, &val);
/* Suspend timer in low power mode, write once-only */
//val |= IMX2_WDT_WCR_WDZST;
val &= ~IMX2_WDT_WCR_WDZST;
i modify the last line code. but it still can not keep watchdog work in stop mode.
my source is base on 126.96.36.199.0.0
the situation is :
i open the watchdog first, then I make system into stop mode. it can not reset in expected timeout . it will keep sleep .
and when i wake up system, it will reset when timeout.
and if I just open the watchdog,and not let system into sleep, it will reset when timeout.
i will appreciate it if you can reply.