On Wed, May 30, 2018 at 09:09:02AM -0700, Doug Anderson wrote: > On Wed, May 30, 2018 at 9:07 AM, Mark Brown wrote: > > It needs something to tell it what the new voltage to set is. > The regulator driver has its own cache of what voltage was most > recently requested by Linux. It can use that, can't it? If we're just going to use the most recently set voltage then hopefully the hardware already knew that, and it might not be the lowest available voltage if the last consumer to get turned off was holding the voltage higher.