CNTR_CTRL_PRESCALE_MIN
reg |= CNTR_CTRL_PRESCALE_MIN << CNTR_CTRL_PRESCALE_SHIFT;
res = get_counter_value(dev, CNTR_ID_WDOG) * CNTR_CTRL_PRESCALE_MIN;
do_div(dev->timeout, CNTR_CTRL_PRESCALE_MIN);