With Lunar Lake and newer Intel graphics there is a new feature called the Common Mode Timing Generator (CMTG) that so far hasn't been enabled by the open-source Intel Linux graphics driver. But patches being worked on are enabling this CMTG feature that will unlock other functionality moving forward.
The display engine with Lunar Lake and newer supports CMTG. CMTG serves as a timing generator running in parallel with transcoder timing generators and can be used for synchronization across multiple displays.
Intel's Common Mode Timing Generator supports uses