It's enabled by default, and debug output from the boot EEPROM will always go there. If you have a recent EEPROM image and enable_uart=1 in config.txt then the kernel output will go to UART0 GPIOs 14 & 15 unless the EEPROM detects a pull-up on the RX line - i.e. unless the cable is plugged into a powered Debug Probe. Unless your workflow involves having a common config.txt that you use everywhere (e.g. on a shared SD card) then don't use enable_uart=1 on a CM5 unless you actively want the kernel console to appear on UART0.
Statistics: Posted by PhilE — Tue Jan 21, 2025 9:10 am