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Re: Serial console causes lots of interrupts on RPi Zero

To: port-arm%netbsd.org@localhost
Subject: Re: Serial console causes lots of interrupts on RPi Zero
From: mlelstv%serpens.de@localhost (Michael van Elst)
Date: Wed, 30 Apr 2025 14:34:09 -0000 (UTC)

john%klos.com@localhost (John Klos) writes:

>  23004 bcm2835 pi uart

>Does anyone know why interrupts go crazy when the serial console is used 
>at boot?

23004 is almost exactly 2 interrupts at 115kbps 8n1.

Looks like the UART has shorted TX+RX and every character received is echoed.

References:
- Serial console causes lots of interrupts on RPi Zero
  - From: John Klos

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