Nice video coverage by Jeff Geerling here:
The Steam Deck LCD screen panel's MIPI pinout was unobtanium for ages, and since there are so many of these screens available, people want the pinout, mainly to be able to have different screens on the Steam Deck.
Finally though, someone's decided to open this up a bit.
It's in the form of a HAT but the project is open source: https://github.com/ScandentLLC/tv070wxm-hat
Check it out