The requirement is a System on Chip (SoC) solution that supports upscaling and downscaling of displayport input and provides scaled displayport output.
One I have found so far are STDP93x0, STDP9210, and STDP73x0. https://www.st.com/en/touch-and-display-controllers/stdp9310.html
But the issue with them is it requires a different chip for each different scaled resolution.
- Input : DisplayPort
- Output : Displayport
- Support : Upscaling and Downscaling
- Type : System-on-Chip (SoC)