Am Donnerstag, 8. Januar 2026, 13:30:08 Mitteleuropäische Normalzeit schrieb Chukun Pan:

quoted

V1.209 and later should have RTC. What version do you have?

# hexdump -C /sys/bus/i2c/devices/0-0050/eeprom
00000070  0c 00 00 00 01 00 56 31  2e 32 30 38 00 00 89 0b  |......V1.208....|

How should we handle the older versions?

I think we might want an dt-overlay for this.

As the value can be read from the eeprom, you could even add code to the
board in u-boot to set the "fdtoverlay" variable automatically for extlinux.


Heiko