[PATCH v2 1/3] ARM: dts: imx6: add pm_power_off support for i.mx6 chips

[Sascha Hauer]

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