Grant Likely wrote:

On 1/3/08, Scott Wood [off-list ref] wrote:

quoted

I'd just link in both directions, and let software follow it in
whichever direction it prefers.

Gah!  Don't do that!  Then you need to maintain both directions in the
dts file.  Software is good at generating reverse mappings.

Software is, however, lousy at correctly wading through 
poorly-structured data (which device trees are full of) to figure out 
how to locate the link it wants to follow backwards.

-Scott