differences between and other kernels


what is the background or the difference between the
kernel and the "normal" kernels? The reason why I am asking is that
with kernel I can have a output via s-video. When I
use a newer kernel I do not have
/sys/class/display_control/omap_disp_control/video1 - directory. Is
there a specific patch or something like that?

I would be very kind if someone could explain the differences to me.

Thanks and bye - Robert