Small note here, MIPI CSI-2 can also use more [than two] lanes (it's basically the same interface, and I believe uses I2C to control/setup the sensor). This is offered with newer 22-pin connector based camera sensors for other solutions - I may need to dig into their schematics + source a bit to understand which pins on their chips they use, but there is an assumption here that they have the support for the interface built in.