suspend to ram on pmac ?

I have a pmac G4 MDD. Is suspend to ram supported ? I enabled all pm related kernel options I could find, but:

# ls -la /sys/power/
total 0
drwxr-xr-x  2 root root    0 Nov  9 19:33 .
drwxr-xr-x 12 root root    0 Nov  9 19:32 ..
-rw-r--r--  1 root root 4096 Nov  9 19:33 pm_test
-rw-r--r--  1 root root 4096 Nov  9 19:33 state
# cat pm_test
[none] core processors platform devices freezer
# cat state
#

I do not actually need STR. I have to test suspend/resume support for a driver, so I need at least a working pm_test at devices level.

Giuliano.