I recently started working on our own board design using the DM368. We have removed the CPLD and video mux. The video mux is hardwired into the kernel in the file davinci_platform.c. Right now I'm trying to figure out why the ethernet interface is not active until the Linux kernel comes up. It should be active in u-boot, like on the EVM. We replaced the ethernet phy (KS8001L) on the EVM with a different one (KS8863). So I'm thinking that is the source of the problem.