The cleanest way to power off a board inside the kernel.

Jan Weitzel J.Weitzel at
Mon Apr 18 05:50:32 EDT 2011

Am Montag, den 18.04.2011, 11:23 +0200 schrieb javier Martin:
> There are some boards out there, including Beagleboard xM, which are
> provided with a PMIC that is able to enable or disable power supply
> for the system. The interfaces used for that purpose usually include
> gpios or I2C.
> What is the cleanest way, provided there are some, to tell those
> circuits at the end of the power down process to cut off the power
> supply of the system?
> At first glance I thought there could be a board specific hook for
> that purpose but I couldn't find any, just an endless loop "while
> (1);" instead.
Look for pm_power_off. It's a function pointer to optional machine
specific functions
Regards, Jan

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