i think it would be better to use "tree - chips". not just the wood, but also leaves and needles. this will bring green stuff to the brown stuff. that should break down quick enough to bring some fertilization.
when you have a thick layer of decomposed woodchips, then you can plant directly in or under it, because the chips have turned into compost.
i planted a few potatoes a few days ago. just for testing. i put them into the soil, covered them with a bit soil and put some chips on them. i ll probably add more chips later.
here are three videos concerning the Back to Eden method of growing potatoes in woodchips.