Camera device-tree port-index

How should this “port-index” be filled in? There is no explanation when clicking on this link.

Here’s the mapping.

Physical CSI Brick [1] NVCSI port-index tegra-capture-vi port-index Device Tree serial_* Interface
CSI A <0> <0> serial_a
CSI B <1> <1> serial_b
CSI C <2> <2> serial_c
CSI D <3> <3> serial_d
CSI E / F <4/5> <4> serial_e
CSI G / H <6/7> <5> serial_g

Looks like the link is broken it should link to the port-index like below.