I have a problem with the RTC on our Orin AGX DevKit. Each time I start the DevKit for the first time of the day, the time is reset to 1970-01-01. When I set the correct time with “timedatectl set-time” and reboot the system, the time is still correct. However, the next day, the time is reset to 1970-01-01. It seems like the capacitor of the RTC discharges too quickly.
Can anyone help me with that problem?
Hi lukas.hindemith1,
Please share the result of the following command on your board.
$ zcat /proc/config.gz | grep CONFIG_RTC_HCTOSYS_DEVICE
We don’t have RTC battery connecting on the devkit so that the time may be reset after the capacitor run out of power after power off.
Hey,
the result of this command is:
CONFIG_RTC_HCTOSYS_DEVICE="rtc1"
It seems you should use rtc0 for RTC.
Please add the following kernel config and update the kernel.
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
Thanks for the update.
Could you maybe also instruct me on how to update the kernel on a Jetson board?
Which Jetpack release you are using?
Please share the result of the following command on your board.
$ cat /etc/nv_tegra_release
The result is:
R35 (release), REVISION: 4.1, GCID: 33958178, BOARD: t186ref, EABI: aarch64, DATE: Tue Aug 1 19:57:35 UTC 2023
Please refer to Kernel Customization — Jetson Linux Developer Guide documentation (nvidia.com) to build kernel image and update to your board.
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