Thanks ! Verified by buzzing the buzzer and writing RTC (next-20140403): echo 24 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio24/direction echo 1 > /sys/class/gpio/gpio24/value echo 0 > /sys/class/gpio/gpio24/value date +%Y%m%d%h%m -s "201001202323" hwclock -w reboot .. [ 2.420000] moxart-rtc rtc.0: setting system clock to 2010-01-20 22:23:31 UTC (1264026211) .. date +%Y%m%d%h%m -s "201212181553" hwclock -w reboot .. [ 2.410000] moxart-rtc rtc.0: setting system clock to 2012-12-18 14:53:29 UTC (1355842409) Tested-by: Jonas Jensen <jonas.jensen@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html