On Wed, Sep 17, 2014 at 11:45:15AM +0800, Robin Gong wrote:

On Wed, Sep 17, 2014 at 10:10:45AM +0800, Shawn Guo wrote:

quoted

On Fri, Sep 12, 2014 at 04:48:57PM +0800, Robin Gong wrote:

quoted

All chips of i.mx6 can be powered off by programming SNVS.
For example :
On i.mx6q-sabresd board, PMIC_ON_REQ connect with external
pmic ON/OFF pin, that will cause the whole PMIC powered off
except VSNVS. And system can restart once PMIC_ON_REQ goes
high by push POWRER key.

What's the behavior for those boards on which PMIC_ON_REQ isn't
connected to anywhere?

System can't be powered off if not connect PMIC_ON_REQ. Although all of our
reference design for i.mx6 chips are connecting  PMIC_ON_REQ with external
PMIC, we need consider others may not use external PMIC. I'll add the info
into commit log or Kconfig.

You should add the information to the dtsi file in form of a
status = "disabled" property so that boards that actually have the
feature can enable it.

Sascha

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