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Changing default UART0 pins makes console print gibberish

I would like to print debug messages to a PuTTY console. With the evaluation kit, this is very easy. It is connected to my PC via a USB cable, and I listen to one of the virtual com ports that is intended for the UART communication. It works.

Now for my custom board, I have changed the pins in the common.dts file. I see characters being printed to the PuTTY console, but they are not the correct ones. I print every 5 seconds, and every 5 seconds I see gibberish being printed.

Am I missing a part of the configuration, or is my hardware faulty?
I did not change the baudrate settings.

Thank you!

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