Benjamin Herrenschmidt writes the following:
Doesn't it have something in "compatible" instead ? that would be the
way to go.
Assuming that would be represented as a file named "compatible" in the
directory /proc/device-tree/*/*/8042@i60 ... no, it doesn't have one of
those.
For the amusement of all, I offer the entire device-tree as presented in
/proc by my running 2.6.22.1 kernel. Available for a limited time from
http://world.std.com/~pacman/pegasosII_proc_device-tree.tar.gz
--
Alan Curry
pacman@world.std.com