The first iBook needs special mclk/xclk values, or the screen will show only
garbage.  A patch like this went into 2.4.23.  It stopped working after
2.6.10-rc1.

http://linux.bkbits.net:8080/linux-2.4/cset@3f966ca7mqKxZorh7Uw2SBAuVbv3mA

It was discussed here:
http://marc.theaimsgroup.com/?t=106345749200001&r=1&w=4Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>