* [PATCH] ARM: dts: make arch-timer always on in rk3288 soc
@ 2014-08-27 1:47 Kever Yang
[not found] ` <1409104060-26294-1-git-send-email-kever.yang-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
0 siblings, 1 reply; 2+ messages in thread
From: Kever Yang @ 2014-08-27 1:47 UTC (permalink / raw)
To: heiko-4mtYJXux2i+zQB+pC5nmwQ
Cc: dianders-F7+t8E8rja9g9hUCZPvPmw, sonnyrao-F7+t8E8rja9g9hUCZPvPmw,
addy.ke-TNX95d0MmH7DzftRWevZcw, cf-TNX95d0MmH7DzftRWevZcw,
xjq-TNX95d0MmH7DzftRWevZcw, wulf-TNX95d0MmH7DzftRWevZcw,
lyz-TNX95d0MmH7DzftRWevZcw, hj-TNX95d0MmH7DzftRWevZcw,
huangtao-TNX95d0MmH7DzftRWevZcw, Kever Yang, Rob Herring,
Pawel Moll, Mark Rutland, Ian Campbell, Kumar Gala, Russell King,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-kernel-u79uwXL29TY76Z2rM5mHXA
We need use the hrtimer, which need the arch-timer to be 'always-on'
Signed-off-by: Kever Yang <kever.yang-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---
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 @@
<GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
<GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
clock-frequency = <24000000>;
+ always-on;
};
i2c1: i2c@ff140000 {
--
1.9.1
--
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^ permalink raw reply related [flat|nested] 2+ messages in thread[parent not found: <1409104060-26294-1-git-send-email-kever.yang-TNX95d0MmH7DzftRWevZcw@public.gmane.org>]
* Re: [PATCH] ARM: dts: make arch-timer always on in rk3288 soc [not found] ` <1409104060-26294-1-git-send-email-kever.yang-TNX95d0MmH7DzftRWevZcw@public.gmane.org> @ 2014-08-27 9:37 ` Mark Rutland 0 siblings, 0 replies; 2+ messages in thread From: Mark Rutland @ 2014-08-27 9:37 UTC (permalink / raw) 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 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 <kever.yang-TNX95d0MmH7DzftRWevZcw@public.gmane.org> > --- > > 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 @@ > <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>, > <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>; > 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 ^ permalink raw reply [flat|nested] 2+ messages in thread
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2014-08-27 1:47 [PATCH] ARM: dts: make arch-timer always on in rk3288 soc Kever Yang
[not found] ` <1409104060-26294-1-git-send-email-kever.yang-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2014-08-27 9:37 ` Mark Rutland
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