I’m looking into them. I know they advertised as being an open source competitor to the Broadcom chips in the Raspberry π. The Rπ only has a partial peripherals datasheet available.
As far as I know, no current hardware has documented tape outs or fab level process documentation. So do any of you know the level of total documentation for the RockChip stuff? Any comments on hardware? Any recommendations on dev boards, tablets, netbooks, bootloader or kernel stuff?
Collabora is actively working on upstreaming the Radaxa Rock 5B
The TRMs are at least available online
meta-rockchip, Linux kernel, and u-boot have upstreamed support for (most) interfaces - check upstream status here: https://gitlab.collabora.com/hardware-enablement/rockchip-3588/notes-for-rockchip-3588/-/blob/main/mainline-status.md
ARM itself has uploaded the firmware for the GPU to linux-firmware
There’s work on the NPU going pretty well
I’ve seen some work on an open TEE, but I don’t need that for my project, so I haven’t looked much into it
Rockchip themselves are… Questionably open
For the software side, I’ve found them decent. I do have to run latest and greatest Linux kernel and u-boot on our projects
The hardware team wasn’t so happy for your fab level, but we managed to get some designs working based off SoMs from Firefly