Sorry for not being good at English.
linux kernel 16.04 -> 18.04
Changes to Device Tree Properties
Release 31 and later support both the I2C and SPI buses, as well as the CPHY and DPHY interfaces. To avoid confusion, make the following changes in the current sensor driver device tree files:
•Rename csi-port to port-index for VI and CSI endpoints.
•Add a new phy_mode property to each sensor mode. The value can be DPHY or CPHY, depending on the sensor type.
16.04 source -> !!! good working. !!!
dtb -> csi-port = <3>; /* Enable TX0 and TX1 */
device driver code -> property = of_get_property(node, “csi_port”, NULL);