I am using iMX6 to build a system based on Android Kit-Kat. On the system I have an external RTC chip which is powered by a separate battery. The external RTC chip does not have an interrupt line connected iMX. The external RTC chip is registered under /sys/class/rtc/rtc0.
I have also enabled the internal SRTC on iMX by enabling CONFIG_RTC_DRV_MXC_V2 to build the rtc-mxc_v2.o. The internal SRTC is under /proc/driver/rtc.
Two questions:
Hello
Unfortunately, what you are willing to do is out of our scope. For that, I highly recommend you to go to professional service support, they can help you.
Best Regards,
Diego.