how to use CSI0 on GPIO2

[yoann_q]

hi,
as indicated on the A10 datasheet avalaible here http://dl.linux-sunxi.org/A10/A10%20Datasheet%20-%20v1.21%20%282012-04-06%29.pdf (page 24) the CSI0 (camera interface) can be accessed if mode 3 is activated , the interface is connected to GPIO 2 PE0/1...
so , how to activate the mode 3 functions and is there a linux driver to access this after activation
best regards