On Wed, Sep 17, 2014 at 08:06:49AM +0200, Sascha Hauer wrote: > 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 Hi Sacha, but that's SOC level feature and it's harmless even if others don't want to use this pin to control external PMIC. > > -- > Pengutronix e.K. | | > Industrial Linux Solutions | http://www.pengutronix.de/ | > Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | > Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
