Function as3722_rtc_attach

freebsd/arm/nvidia/as3722_rtc.c:99–115

}

int
as3722_rtc_attach(struct as3722_softc *sc, phandle_t node)
{
	int rv;

	/* Enable RTC, set 24 hours mode  and alarms */
	rv = RM1(sc, AS3722_RTC_CONTROL,
	    AS3722_RTC_ON | AS3722_RTC_ALARM_WAKEUP_EN | AS3722_RTC_AM_PM_MODE,
	    AS3722_RTC_ON | AS3722_RTC_ALARM_WAKEUP_EN);
	if (rv < 0) {
		device_printf(sc->dev, "Failed to initialize RTC controller\n");
		return (ENXIO);
	}
	clock_register(sc->dev, 1000000);

	return (0);
}