I've found a few forum posts describing attempts to bring up support for RAW12 on a 4-lane CSI2 sensor, has anyone had success in receiving 12-bit RAW data through 4-lane CSI2 sensor?
Comment regarding inability to bring up RAW12 in 4-lane configuration on i.MX8M : iMX8M MIPI-CSI 4-lane configuration
Comment regarding lack of support for RAW12 on i.MX7D https://community.nxp.com/thread/474668#comment-1081971
Comment regarding difficulty bringing up RAW12 on i.MX6D Mipi Csi-2: Capturing RAW12 Data correctly into Memory
Comment showing some success in getting RAW12 working on i.MX6 i.MX6Q MIPI CSI2: Capturing RAW12 generic data