GSENSOR_3V3 voltage drop

[Werner Almesberger]

Joerg Reisenweber wrote:
> The purpose of PWNEN is a little bit cloudy to me.

It's basically the hardware mechanism the CPU uses to ask for power.
So if there's a rail the CPU needs to operate and that rail is turned
off during suspend, such as CORE_1V3, then it must be switched via
PWREN.

For anything else, you can use I2C. (If the usage pattern coincides
with PWREN, then you can of course also set it to follow PWREN.)

- Werner