PLEASE NOTE : there is an oversight in my PCB design : DDC112 digital pins are 5V, and the TinyFPGA are 3.3V and are NOT 5V tolerant (it's a bit not clear on the internet, but the ICE40LP8K specs don't mention 5V anywhere). I'm just lucky my poor TinyFPGA survived this treatment and I hope everything's fine. So it may be ok to use it that way, but be warned! It should be easy to add a logic converter and I definitively will if I ever put some time in this project in the future.