Jetson nano cannot write sys time to RTC

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

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

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