[PATCH 1/4] mfd: tps65217: Set PMIC to shutdowm on PWR_EN toggle

AnilKumar, Chimata anilkumar at ti.com
Wed Nov 14 00:10:18 EST 2012

On Wed, Nov 14, 2012 at 07:53:42, Mark Brown wrote:
> On Mon, Nov 05, 2012 at 05:59:36PM +0100, Benoit Cousson wrote:
> > On 11/05/2012 10:42 AM, AnilKumar Ch wrote:
> > > +Optional properties:
> > > +- ti,pmic-shutdown-controller: Telling the PMIC to shutdown on PWR_EN toggle.
> > That sounds like a generic functionality to me. Don't we have some more
> > generic way to handle that?
> > If not, that should probably not be a TI only attribute.
> It's pretty unusual to have this configurable as a single thing rather
> than as part of flexible power sequencing or something that's just fixed
> in silicon.

"[PATCH 2/4] rtc: OMAP: Add system pm_power_off to rtc driver" thread
have the details of how PMIC is connected to RTC module of SoC.

As part of the power_off sequence we have
1. To write STATUS_OFF in TPS65217 PMIC. If we do so then PMIC will
go to shutdown if PWR_EN is pulled-down. (This patch doing this)
2. To pull down the PWR_EN signal we have to set PMIC_PWR_EN in RTC
module and trigger ALARM2 event. (This piece of code in 2/4 patch).


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