Different RTC Time issues

[ShaneCCC]

Could you follow below like to modify the kernel configure to new kernel to verify.

RTC can't hold time the after system rebooted in L4T 35.1

Hi @ShaneCCC Confirmed your workaround can’t work. Because the workaround is only create an symbolic /dev/rtc to /dev/rtc0. That only can make timedatectl show a correct RTC time from rtc0. But the system time sync mechanism is done by kernel driver. You can check the dmesg to see it. Provide a correct workaround: Set the option CONFIG_RTC_HCTOSYS_DEVICE as rtc0 in tegra_defconfig After changed the option, the local, universal, and rtc time are all correct.