Advanced users • SWD and earlycon at the same time on rpi5

Hi! If I understand correctly, RPI5 can enable JTAG/SWD with the config "enable_jtag_gpio=1" and the JTAG/SWD and the UART are muxed on the same 3-pin debug connector.

On the other hand, this page "https://www.raspberrypi.com/documentati ... ation.html" says

For Raspberry Pi 5, earlycon output only appears on the 3-pin debug connector with the following configuration:
earlycon=pl011,0x107d001000,115200n8

My situation is I need both earlycon and SWD at the same time. Is it possible to enable earlycon on some other UART?

Thanks!

Statistics: Posted by chenz — Fri May 17, 2024 1:57 am

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