Thank you Linguini, good luck and have fun! :-) Tomek On Mon, Sep 1, 2025 at 8:48 PM Matteo Golin <matteo.go...@gmail.com> wrote: > > To update the community, we've been told by Gordon that the Pi Foundation > doesn't have any documentation for the chip beyond what was written in the > peripheral datasheet. Broadcom themselves has written the Linux drivers and > Raspberry Pi has only made some slight bug fixes, etc. We've been suggested > to read the source to discover undocumented registers/configuration options. > > I plan to still continue with the port until the feature set on NuttX is > equal or greater to what is available on QNX. I at least want to get > Ethernet and some graphics running after the base peripheral set (I2C, SPI, > UART) are supported. > > Matteo > > On Sun, Aug 31, 2025 at 6:10 PM Matteo Golin <matteo.go...@gmail.com> wrote: > > > Very interesting Sebastian. I got that impression from Broadcom when I was > > initially trying to port NuttX to the Pi. The inability to submit forms on > > their website seems like it might be by design... > > > > I'm hopeful the Raspberry Pi Foundation will have something more for us to > > work with, they seem more positive to FOSS. Otherwise I will still continue > > with reverse engineering until at least the point where the functionality > > driver-wise is on par with QNX. > > > > On Sun, Aug 31, 2025, 10:46 AM Tomek CEDRO <to...@cedro.info> wrote: > > > >> James Dougherty contacted us with Gordon Hollingworth from Raspberry > >> Pi Foundation recently :-) We are waiting for response :-) I really > >> hope we can get some sort of documentation and/or code samples to > >> write high quality NuttX port for the big raspberries :-) > >> > >> Open-Source matters even more in this crazy world. Thanks for > >> interesting article Sebastien! Personally I think we should focus only > >> on vendors that support Open-Source. What is the reason for bumping > >> sales for companies that in the end can sue you for reversing? :D > >> > >> Have a good day folks :-) > >> Tomek > >> > >> > >> > >> On Sun, Aug 31, 2025 at 10:15 AM Sebastien Lorquet <sebast...@lorquet.fr> > >> wrote: > >> > > >> > Hello, > >> > > >> > I just found this interesting document: > >> > > >> > > >> https://fastcode.io/2025/08/30/the-69-billion-domino-effect-how-vmwares-debt-fueled-acquisition-is-killing-open-source-one-repository-at-a-time/ > >> > > >> > In a summary, if you expect anything cool from broadcom: dont. > >> > > >> > go go go reverse engineering! > >> > > >> > Sebastien > >> > > >> > > >> > On 8/29/25 15:37, Tomek CEDRO wrote: > >> > > No response from #infra@slack, I just sent request to > >> > > dev@community.apache mailing list maybe someone can reply over there > >> > > :-) > >> > > > >> > > https://lists.apache.org/thread/n9y5vrvjm23npwgbr45f7zq5ys5l8dok > >> > > > >> > > We should also know the official stance from Broadcom and RPI > >> Foundation :-) > >> > > > >> > > Thanks :-) > >> > > Tomek > >> > > > >> > > On Thu, Aug 28, 2025 at 9:35 PM Tomek CEDRO <to...@cedro.info> wrote: > >> > >> I just asked question at #asfinfra / slack, maybe someone can help > >> > >> there or recommend someone who can, waiting for response :-) > >> > >> > >> > >> For a good start you can contact Broadcom and RaspberryPi Foundation, > >> > >> introduce yourself as Apache NuttX RTOS developer that want to port > >> > >> NuttX to rPI boards, and just ask if DataSheets are available :-) We > >> > >> will know then first hand if this is possible or are there any > >> > >> problems / requirements :-) > >> > >> > >> > >> You can ask for 4B and probably Zero-2W SoC documentation these seems > >> > >> most popular nowadays :-) > >> > >> > >> > >> Thanks :-) > >> > >> Tomek > >> > >> > >> > >> > >> > >> > >> > >> On Thu, Aug 28, 2025 at 8:45 PM Matteo Golin <matteo.go...@gmail.com> > >> wrote: > >> > >>> Hi Tomek, > >> > >>> > >> > >>> Thanks so much! I actually hadn't thought of that, maybe we could > >> ask for > >> > >>> help from the foundation. Do you know who's the best point of > >> contact for > >> > >>> that? > >> > >>> > >> > >>> I know Linux must have received the datasheets to make Raspberry Pi > >> OS. No > >> > >>> offence to NuttX, but Linux is pretty popular in comparison. If > >> Broadcom or > >> > >>> Raspberry Pi would release us some information that would be an > >> immense > >> > >>> help. I suspect there was some kind of deal with the Linux group > >> but I have > >> > >>> no idea. I believe even QNX didn't have access to the datasheets > >> and rather > >> > >>> just reverse engineered the Linux drivers. > >> > >>> > >> > >>> Matteo > >> > >>> > >> > >>> On Thu, Aug 28, 2025, 12:42 PM Tomek CEDRO <to...@cedro.info> > >> wrote: > >> > >>> > >> > >>>> On Tue, Aug 26, 2025 at 10:05 PM Matteo Golin < > >> matteo.go...@gmail.com> > >> > >>>> wrote: > >> > >>>>> I2C still needs some work unfortunately. However, I agree with you > >> > >>>>> generally. Personally, I think HDMI, networking (including WiFi > >> and BLE) > >> > >>>>> and some kind of interaction with storage (eMMC or SD card) are > >> the most > >> > >>>>> important. Unfortunately, those are likely going to be the most > >> difficult > >> > >>>>> because of the lack of documentation on the peripherals. It is > >> definitely > >> > >>>>> not an impossible task, but it will be challenging. Hence my > >> request for > >> > >>>>> creating the new project roadmap, so maybe some discoveries can be > >> > >>>>> documented there and more eyes can get on the RPi implementation. > >> > >>>> The lack of documentation is a real pain, and known issue for > >> years in > >> > >>>> many areas, but some vendors are especially famous for that. > >> > >>>> > >> > >>>> Considering someone wants to create Open-Source drivers for free > >> and > >> > >>>> bring customers to the vendor. > >> > >>>> > >> > >>>> Maybe we could ask Apache Foundation for help in obtaining required > >> > >>>> datasheets? :-) > >> > >>>> > >> > >>>> -- > >> > >>>> CeDeROM, SQ7MHZ, http://www.tomek.cedro.info > >> > >>>> > >> > >> > >> > >> > >> > >> -- > >> > >> CeDeROM, SQ7MHZ, http://www.tomek.cedro.info > >> > > > >> > > > >> > >> > >> > >> -- > >> CeDeROM, SQ7MHZ, http://www.tomek.cedro.info > >> > >
-- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
