Early v2.5 drafts (sometimes labeled v2.5r00 or v2.5draft) circulated among early adopters. The final, released version is the "fixed" version compared to those drafts.
Fun fact: The Raspberry Pi’s CSI/DSI connectors implement roughly D-PHY v1.2. Upgrading to v2.5 would quadruple possible camera bandwidth on a Pi — but the Broadcom chip doesn't support it. mipi dphy specification v25 pdf fixed
Original: The timing for the LP to Escape mode transition was ambiguous. Fixed: Clarified that the bridge state must hold for at least 100 ns before the first data bit. Early v2
The MIPI D-PHY specification v2.5 is a versatile and widely adopted standard for high-speed, low-power interfaces. Its improved performance, power efficiency, and scalability make it an ideal solution for a wide range of applications. Fun fact: The Raspberry Pi’s CSI/DSI connectors implement
If you cannot access the v2.5 PDF but need to verify that your implementation is "fixed" (compliant), use the MIPI D-PHY Conformance Test Suite (CTS). The CTS is often less restricted and published in summary.
The CTS tells you:
If your device passes the v2.5 CTS, it is effectively "fixed," even if you used a slightly older draft to design it.