DS90UB948-Q1: About the relationship between dualOLDI output timing and origin FPDLinkⅢ input timing?

What we want to know is if the back end of the 948 is configured in LVDS/OLDI dual channel mode, what is the relationship between the specific output dual LVDS timing parameters and the timing parameters of the FPD3 signal input to the 948 by the front end.
Because we need to turn a timing parameters of the front-end soc output to adapt the timing parameters of the back-end screen.
Some parameters are relatively easy to know. For example, hactive is easy to infer logically to be halved. and all vertical parameter should be untouched.
Some parameters are not so obvious conclusions, hsync, hbp, hfp, htotal are not clear.
For example, is the hsync to the dualLVDS end halved or is it the same as the front end? If it is halved, what if the front end hsync value is odd?