No console output on Raspberry Pi Compute Module 5

[Jonas Kvinge]

On Thu, 2025-08-28 at 12:05 +0100, Peter Robinson wrote:
> Hi,
> 
> > I'm using a Raspberry Pi 5 Compute Module with a sourcekit.io
> > board.
> > I'm not getting any output from u-boot to the console, I get this
> > with
> > CM4 with the same setup.
> > Do I need to change anything to get console output on RPI5?
> 
> Well at least on the RPi5 the console has moved to ttyAMA10 from
> ttyS0
> so you'll likely have to update something, it will depend on how that
> carrier board pins out the UART, but it works fine for me on the RPi5
> so I suspect it's something config based.
> 
> > I've added the following patch for RPI5 which I found on the list:
> > https://github.com/jonaski/u-boot/commit/2f60b5d80b3a08d480074e8230ada543bfa42401
> 
> The rpi5 is supported with the rpi_arm64_defconfig so that's not
> needed.
> 
> You also don't report what version of U-Boot you're using. There was
> an issue with the serial console on rpi5 producing gunk on the output
> but that was fixed with 2025.07 release.
> 
> > My config is here:
> > https://raw.githubusercontent.com/jonaski/u-boot/refs/heads/rpi5/.config
> > 
> > Jonas

The series of patches for Raspberry Pi 5 support
from https://lists.denx.de/pipermail/u-boot/2025-February/579540.html
aren't in the master branch, are you saying RPI5 is supported without
them? Does the GPIO and console work for you without any patches?

I used the latest version of u-boot from git master at the time of
testing.

Jonas