FYI: The RPi form has interesting notes about the status-of/plans-for RPi5 U-Boot PCI and RP1 U-Boot support: status/background information

I found the following "Raspberry PI5: Patch series
introducing PCI, RP1 drivers to u-boot" RPi forum
exchange to be an interesting read.

https://forums.raspberrypi.com/viewtopic.php?t=383682

It indicates, among other things, that the Linux folks
do not plan on the DTB declaring the RP1, preferring
a  run-time load of an overlay by the RP1 driver:
treat the RP1 as a PCIe device detected at boot time,
possibly allowing for one on a PCIe card instead of
built-in.

It is not clear to me if the "native" RPi5 materials
will be similarly handled.


I'm also told the U-Boot 2025.01 is useful for the RPi5
on some vintage(s?) of the Linux kernel. I'm told that

https://github.com/raspberrypi/linux/releases/tag/stable_20240529

and the modern enough RPi OS ones work.

(No claim to know what works vs. what does not. I've
done no testing.)

===
Mark Millard
marklmi at yahoo.com