How to configure LCD controller

Artem Park
Dear All,

Could someone please give me instructions or some references on how to
configure LCD controller in Linux kernel. I was ought to change 7" LCD
model and now I'm having problems with displaying.

I used 7"LCD model: GATW70SP8H1R0 that worked fine with my kernel 2.6.29
and now changed to model: AT070TN83

According to the technical specifications these LCD displays have almost
the same parameters, however LCD AT070TN83 can display only when I turn on
the board first time. Even it displays the output quality is not good, the
screen is blinking at some places.... and after the kernel is loaded it
starts blinking.... 

I'm don't have experience dealing with hardware part. Please someone help
me with information.

Many thanks.