Quite a few MCUs do have MIPI DSI interfaces now, for instance STM32's and many other vendors. I would use that rather than try "hacking" a RP2040 to do it - if you're able to control the display at all, the refresh rate will be miserable.
Pick something with a MIPI DSI interface, enough RAM and at least a Cortex-M4. I would still check that they can support the intended resolution (full HD), as the typical use case for MCUs with a MIPI DSI interface is controlling smaller screens, like the round displays for smart watches, which are usually MIPI DSI as well, with a much lower resolution than full HD.