No; use an alias in the aliases node. That is what aliases is
designed
for. Something like 'index' is a reinvention of the wheel.
Do aliases work in reverse? That is, if I have a pointer to a device
node, can
I look up its alias directly? Or do I have to scan the aliases node
and do a
comparison of each phandle, one at a time, until I find a match? And
when I
find a match, will I need to do sscanf() in order to extract the
actual index
value from the property?
Aliases are one-way. You can have multiple aliases point to the same
node,
as well (and that is quite common, even).
If you need a unique identifier for an OF node, use its phandle.
It sounds to me like you just need to set up a mapping between
phandles and Linux i2c bus ids here?
Segher
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