Dear Bojan Buić,

Hello,

I found Your email address in UBoot code(checkout from git).

I would like enable watchdog on imx233 procesor in uboot.

I try like this :

struct mxs_rtc_regs *rtc_regs =
    (struct mxs_rtc_regs *)MXS_RTC_BASE;
writel(RTC_CTRL_WATCHDOGEN, &rtc_regs->hw_rtc_ctrl_set);
while (readl(&rtc_regs->hw_rtc_ctrl) & RTC_CTRL_WATCHDOGEN);

but not work. Can You help me ?

CCing the list.

What problem do you observe exactly? "but not work" is not exactly a description of the symptoms.

Anyway ...

You need to implement proper driver for the WDT, see drivers/watchdog/imx_watchdog.c . There is a README, see doc/README.watchdog .

You need to implement hw_watchdog_init() and hw_watchdog_reset() , in the former, you'd start the WDT by programming the HW_RTC_CTRL and HW_RTC_WATCHDOG registers, in the latter you'd need to update the HW_RTC_WATCHDOG register so your board won't keep restarting when the counter runs out.

If you implement the WDT, please submit a patch to the U-Boot ML, thanks.

Best regards, Marek Vasut