[PATCH V4 0/9] Add mandatory regulator for all users of pwm-backlight.

On Tue, Mar 19, 2013 at 11:59:24AM -0700, Andrew Chew wrote:

Many backlights are enabled via GPIO.  We can generalize the GPIO to a
fixed regulator.

I think we should push the series of "Runtime Interpreted Power
Sequences" moving forward, which should be useful this case and many
other cases as well.

http://thread.gmane.org/gmane.linux.kernel/1395912

Shawn