Linux 3.3 was released today. This was the biggest release for the regulator API for quite some time thanks to the contribution of device tree bindings for the API by Rajendra Nayak, the first substantial framework update for a long time, but otherwise was fairly quiet:

• OpenFirmware bindings for the core and for the fixed regulator driver, contributed by Rajendra Nayak. Device tree bindings for the Freescale MC13892 PMIC were also added.
• A new regulator_bulk_force_disable() operation contributed by Donggeun Kim.
• A new driver for the Dialog DA9052 PMIC.