On Tue, Dec 10, 2013 at 08:04:58PM +0530, Balaji T K wrote:

pbias register controls internal power supply to sd card i/o pads
in most OMAPs (OMAP2-5, DRA7).
Control bits for selecting voltage level and
enabling/disabling are in the same PBIAS register.

This looks OK from a regulator API point of view but I expect a new
version is required to address Tony's concerns.