Jetson nano cannot write sys time to RTC

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

I cannot write sys time to RTC,。
date 091010252020.30
image

3

Currently, we can set hwclock with the command as below:
$ sudo timedatectl set-ntp no
$ timedatectl set-time “yyyy-MM-dd hh:mm”

4

now, I fond /dev/rtc , /dev/rtc0 , /dev/rtc1。
“hwclock --systohc -f /dev/rtc1”, can write sys time to rtc.