On Tue, Dec 17, 2024 at 7:35 PM Matteo Golin <matteo.go...@gmail.com> wrote: > Hi Tomek, > Although some of the specs between the two boards are similar, the Pi Zero 2W > uses the RP3A0 chip from what I can tell, > while the Raspberry Pi 4B uses the BCM2711. The RP3A0 uses the same silicon > die from the BCM2837. I don't think the code > will work on both, although they are both quad-core Arm A53 cores so maybe my > porting guide from the BCM2711 along with > Lup's work on the Pinephone will help others bring up NuttX on this chip. > It's also possible some things can be reused > between chips (I assume Broadcom uses the same registers for most of their > I2C interfaces, for instance), but I haven't > investigated this.
Very cool, thank you Matteo! The big problem now is the time to find to play with it :-) I can see we also depend on *.dtb and *.dat files that are somehow PITA on other OS (i.e. FreeBSD) as the DTS standard changes often it is hard to follow changes and find versions that allow run provided pre-built images.. What are your experiences in this field? Are these files really necessary? Is it part of UBoot configuration? > I have included indications in the supported platform documentation about > what features are completely, partially > complete or missing completely, it just appears that the documentation has > not updated with the changes yet. It should > be visible tomorrow when the next build runs. Sorry I did not watch the PR I was on delegation and getting back to the living.. the website is now updated :-) https://nuttx.apache.org/docs/latest/platforms/arm64/bcm2711/boards/raspberrypi-4b/index.html Thank you :-) Tomek -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
