I have one i.MX6Q Sabre SD board and one MCIMX28LCD. They are connected via 24bit parallel port (J504 DISP0 Expansion Connector in i.MX6Q Sabre SD board).
But MCIMX28LCD failed to show the image. I doubt the interface timing between i.MX6Q Sabre SD and MCIMX28LCD is not correct. Do you have spec about the interface timing?