On Wed, Nov 23, 2016 at 12:42 PM, Laxman Dewangan [off-list ref] wrote:

Here, we need the regulator handle which can support the other regulator
APIs.

In some of platforms, we do not use some of the io-pins and on this case, we
do not connect the IO rail supply for these pins. So this is like a hardware
optional.

If the IO pins are used then it need to have the proper regulator handle.
Missing regulator handle on DT will be like that IO pads are not used.

OK I buy that argument, unless Mark (Brown) has comments.

Yours,
Linus Walleij