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

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
14

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.

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