Messages in this thread Patch in this message | | | From | Alexander Kochetkov <> | Subject | [PATCH v5 4/8] ARM: dts: rockchip: disable arm-global-timer for rk3188 | Date | Tue, 24 Jan 2017 15:16:39 +0300 |
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clocksource and shed_clock provided by arm-global-timer is quite unstable, because their rate depends on cpu frequency. So disable arm-global-timer and use clocksource and sched_clock from rockchip_timer.
It is impossible get stable clocksource having rockchip_timer and arm-global-timer enabled at the same time. Because arm-global-timer looks like a better candidate for the kernel: it has higher frequency and rating.
Disabling arm-global-timer doesn't leave kernel without clockevents as there is another clockevent provider (smp-twd).
Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com> Reviwed-by: Heiko Stübner <heiko@sntech.de> --- arch/arm/boot/dts/rk3188.dtsi | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/rk3188.dtsi b/arch/arm/boot/dts/rk3188.dtsi index bcf8e03..f677130 100644 --- a/arch/arm/boot/dts/rk3188.dtsi +++ b/arch/arm/boot/dts/rk3188.dtsi @@ -546,6 +546,7 @@ &global_timer { interrupts = <GIC_PPI 11 0xf04>; + status = "disabled"; }; &local_timer { -- 1.7.9.5
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