Two HDMI outputs on RK3588 with Pocket Reform are actually possible, there’s just no breakout/port board using the second port yet (it’s between the RCORE carrier and the RK3588 SOM itself, next to the Wi-Fi/BT port). Also, I’m currently working on a mainboard update that includes experimental DisplayPort Alt-Mode for USB-C, so if that works out you’ll be able to get HDMI + DP. I don’t want to overpromise at this point though because while technically feasible, there could still be signal integrity issues with how crowded the board is, and we need to implement the handshake with the monitor over PD protocol to switch to DP.
I still think Blender can be made to run one day on RK3588 when the Geometry Shaders implementation for panvk is done. Faith Ekstrand gave a very informative talk about this at FOSDEM that explains the technical details: FOSDEM 2026 - Geometry shaders in panvk with libpoly