The power consumption of MIPI is the largest when connected 2 lanes, when connected 4 lanes it will be reduced by about 20mW.
The reason is that when the number of lanes is changed, the CSI frequency and PLL will also change. From 2 lanes to 4 lanes, the frequency is reduced, and the power consumption of PLL is also reduced. Therefore, the power consumption of 2 lane MIPI is the largest.