On Wed, Jul 27, 2016 at 08:12:29AM +0300, stefan.mavrodiev@gmail.com wrote: > > > +®_dcdc1 { > > > + regulator-always-on; > > > + regulator-min-microvolt = <3300000>; > > > + regulator-max-microvolt = <3300000>; > > > + regulator-name = "vcc-dsi"; > > > +}; > > > > What is it used for? Is it really necessary to keep it on at all time? > > I think so. > This is the supply for the MMC. Then it's poorly named, and you should tie it to the MMC, and remove the always-on if it's only used by the mmc. always-on is supposed to be for regulators that shouldn't but turned off for the system to stay running. Some MMC regulator doesn't fit that description. Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com