Beagle Board XM rev B change display timing for LCD

Hello, I've bought the Beagle Board XM rev B and the xM Expansion V1 from here : [login to view URL] I would like to make it works on the Ubuntu Natty. I've asked to the hardware manufacturer how to do it. He said that I must let the OS know which kind of LCD and touch controller I'm using. Mine it's the TSC2046 controller. I must adjust the source code to support my LCD and touch screen : such as: change the display timing for LCD,adjust the TSC2046 driver in the system. Can someone help me ?