From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Rutland Subject: Re: [PATCH] ARM: dts: make arch-timer always on in rk3288 soc Date: Wed, 27 Aug 2014 10:37:04 +0100 Message-ID: <20140827093704.GA7295@leverpostej> References: <1409104060-26294-1-git-send-email-kever.yang@rock-chips.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1409104060-26294-1-git-send-email-kever.yang-TNX95d0MmH7DzftRWevZcw@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Kever Yang Cc: "heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org" , "dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org" , "sonnyrao-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org" , "addy.ke-TNX95d0MmH7DzftRWevZcw@public.gmane.org" , "cf-TNX95d0MmH7DzftRWevZcw@public.gmane.org" , "xjq-TNX95d0MmH7DzftRWevZcw@public.gmane.org" , "wulf-TNX95d0MmH7DzftRWevZcw@public.gmane.org" , "lyz-TNX95d0MmH7DzftRWevZcw@public.gmane.org" , "hj-TNX95d0MmH7DzftRWevZcw@public.gmane.org" , "huangtao-TNX95d0MmH7DzftRWevZcw@public.gmane.org" , Kever Yang , Rob Herring , Pawel Moll , Ian Campbell , Kumar Gala , Russell King , "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: devicetree@vger.kernel.org Hi, On Wed, Aug 27, 2014 at 02:47:40AM +0100, Kever Yang wrote: > We need use the hrtimer, which need the arch-timer to be 'always-on' Just to check: it isn't possible to place CPUs in the rk3288 SoC into low power states where their timers lose state and/or might not fire? Mark. > Signed-off-by: Kever Yang > --- > > arch/arm/boot/dts/rk3288.dtsi | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi > index 5950b0a..698e6ea 100644 > --- a/arch/arm/boot/dts/rk3288.dtsi > +++ b/arch/arm/boot/dts/rk3288.dtsi > @@ -76,6 +76,7 @@ > , > ; > clock-frequency = <24000000>; > + always-on; > }; > > i2c1: i2c@ff140000 { > -- > 1.9.1 > > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html