Hi Grant,

if you need explicit indexing then use an alias.  My opinion however
is that explicit indexing is unnecessary and is just an artifact of
current i2c subsystem internals.  There is already enough information
in the device tree to match i2c devices with i2c busses without
resorting to indexes.

True. However, there are currently drivers which need platform data for
its initialisation (like drivers/gpio/pca953x.c). Unless these drivers
are rewritten, they can't be loaded just by parsing the device tree, so
they must be loaded from platform init code and here the adapter index
is needed to attach the driver.

Thanks,
Jochen