Elbc driver

Hi, I'm working on a powerpc qoriq p3041 and trying to communicate with a device by elbc bus in gpmc mode. I 've integrated CONFIG_FSL_LBC in Linux which provide the basic functions. Now I'm wondering how can I do read and write operations on the bus.Where is mapped my device? Should I code .read and .write driver functions?How can I start? How integrates my device in the device tree? thanks a lot, Ivan