Hi,
If I recall correctly, Eben Upton who founded raspi is an ex broadcom
employee?
So either broadcom did the ports to these Pi SoCs, or raspi did it based
on privileged broadcom private docs.
https://en.wikipedia.org/wiki/Eben_Upton
He is a former technical director and ASIC
<https://en.wikipedia.org/wiki/Application-specific_integrated_circuit>
architect <https://en.wikipedia.org/wiki/Systems_architect> for Broadcom
<https://en.wikipedia.org/wiki/Broadcom>. OK, not just an employee, TIL.
So yeah, he probably has some docs few other people know exist.
My naive belief is that there is probably very few public info outside
what the linux kernel is going to give.
Sebastien
On 28/08/2025 18:41, Tomek CEDRO 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? :-)
