On 26 May 2014 19:28, Lucas Stach [off-list ref] wrote:

Right, the OPP in my example define the minimum required voltage for
each frequency. This is in accordance to the OPP binding. But for this
chip the datasheet explicitly says that it is ok to power the cpu rail
with up to 1.4V, regardless of the current operating frequency. So this
1.4V is really the upper bound I would like to pass to the regulator
framework. This ensures that the driver still works properly even if the
external regulator can't scale down to the minimum (or in other words
optimal) voltage.

One more query. You have mentioned earlier and I just wanted to confirm
this. In your platform/board regulator only supports one voltage, i.e. 1.4 uV,
and it we can't get lower values out of regulator ?

If that's the case, why are you looking to use regulator at all?