No subject

>             intpin at 0 {
>                 interrupt-parent = <500>;
>                 interrupts = <1 2 2>;
>             };

Which is IRQ2, EDGE_FALLING.

If you change your interrupts property to <1 2 0>, then your sense is
set to LEVEL_HIGH.  (Seriously, you need to read the interrupts
section of Documentation/powerpc/mpc52xx-device-tree-bindings.txt.)

g.

-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely at secretlab.ca
(403) 399-0195