* [PATCH] ARM: dts: rk3288: add arm,cpu-registers-not-fw-configured
@ 2014-11-25 18:54 Sonny Rao
[not found] ` <1416941640-324-1-git-send-email-sonnyrao-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
0 siblings, 1 reply; 2+ messages in thread
From: Sonny Rao @ 2014-11-25 18:54 UTC (permalink / raw)
To: Heiko Stuebner
Cc: linux-kernel, linux-rockchip, linux-arm-kernel, devicetree,
dianders, olof, Rob Herring, Pawel Moll, Mark Rutland,
Ian Campbell, Kumar Gala, Russell King, Kever Yang, eddie.cai,
Sonny Rao
This will enable use of physical arch timers on rk3288, where each
core comes out of reset with a different virtual offset. Using
physical timers will help with SMP booting on coreboot and older
u-boot and should also allow suspend-resume and cpu-hotplug to work on
all firmwares.
Firmware which does initialize the cpu registers properly at boot and
cpu-hotplug can remove this property from the device tree.
Signed-off-by: Sonny Rao <sonnyrao@chromium.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 0f50d5d..c861f52 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -139,6 +139,7 @@
timer {
compatible = "arm,armv7-timer";
+ arm,cpu-registers-not-fw-configured;
interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
<GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
<GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
--
2.1.2
^ permalink raw reply related [flat|nested] 2+ messages in thread[parent not found: <1416941640-324-1-git-send-email-sonnyrao-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>]
* Re: [PATCH] ARM: dts: rk3288: add arm,cpu-registers-not-fw-configured [not found] ` <1416941640-324-1-git-send-email-sonnyrao-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> @ 2014-12-05 18:27 ` Olof Johansson 0 siblings, 0 replies; 2+ messages in thread From: Olof Johansson @ 2014-12-05 18:27 UTC (permalink / raw) To: Sonny Rao Cc: Heiko Stuebner, linux-kernel-u79uwXL29TY76Z2rM5mHXA, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, devicetree-u79uwXL29TY76Z2rM5mHXA, dianders-F7+t8E8rja9g9hUCZPvPmw, Rob Herring, Pawel Moll, Mark Rutland, Ian Campbell, Kumar Gala, Russell King, Kever Yang, eddie.cai-TNX95d0MmH7DzftRWevZcw On Tue, Nov 25, 2014 at 10:54:00AM -0800, Sonny Rao wrote: > This will enable use of physical arch timers on rk3288, where each > core comes out of reset with a different virtual offset. Using > physical timers will help with SMP booting on coreboot and older > u-boot and should also allow suspend-resume and cpu-hotplug to work on > all firmwares. > > Firmware which does initialize the cpu registers properly at boot and > cpu-hotplug can remove this property from the device tree. > > Signed-off-by: Sonny Rao <sonnyrao-F7+t8E8rja9g9hUCZPvPmw@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 0f50d5d..c861f52 100644 > --- a/arch/arm/boot/dts/rk3288.dtsi > +++ b/arch/arm/boot/dts/rk3288.dtsi > @@ -139,6 +139,7 @@ > > timer { > compatible = "arm,armv7-timer"; > + arm,cpu-registers-not-fw-configured; > interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>, > <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>, > <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>, Applied, thanks. -Olof -- 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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2014-11-25 18:54 [PATCH] ARM: dts: rk3288: add arm,cpu-registers-not-fw-configured Sonny Rao
[not found] ` <1416941640-324-1-git-send-email-sonnyrao-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
2014-12-05 18:27 ` Olof Johansson
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