v2.5 refines the ULPS (Ultra-Low Power State) and timings for transitioning between HS and LP modes. This is crucial for battery-operated devices where every nanojoule counts. The specification adds tighter controls for "escape mode" signaling, allowing sensors to wake up faster.
The D-PHY v2.5 operates in two distinct electrical modes to balance speed and power consumption: mipi d-phy specification v2.5 pdf