- Set the option CONFIG_RTC_HCTOSYS_DEVICE as rtc0 in tegra_defconfig
- Modify the /lib/udev/rules.d/50-udev-default.rules to below for the problem.
SUBSYSTEM=="rtc", ATTR{hctosys}=="0", SYMLINK+="rtc"
SUBSYSTEM=="rtc", KERNEL=="rtc0", SYMLINK+="rtc", OPTIONS+="link_priority=-100"