| Message ID | 1416941640-324-1-git-send-email-sonnyrao@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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@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)>, Applied, thanks. -Olof
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)>,
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(+)