[PATCH v4 5/9] ARM: dts: rockchip: disable arm-global-timer for rk3188

Alexander Kochetkov al.kochet at gmail.com
Tue Nov 29 08:14:48 PST 2016

arm-global-timer can provide clockevents, clocksource and shed_clock. But
on rk3188 platform it provide only clocksource and shed_clock. clockevents
from  arm-global-timer is not used by kernel because there is another
clockevent provider with higher rating (smp-twd).

My commit from the series implement clocksource and shed_clock using
rockchip_timer. But sched clock from rk_timer is not selected by kernel
due to lower frequency than arm-global-timer, and clocksource from
rk_timer is not selected by kernel due to lower rating than
arm-global-timer. And I don't want to increase clocksource rating
because ratings greater 300 used for high frequency clocksources.

clocksource and shed_clock is quite unstable, because their rate depends
on cpu frequency. So disable arm-global-timer and use clocksource and
sched_clock from rockchip_timer.

Signed-off-by: Alexander Kochetkov <al.kochet at gmail.com>
 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 0dc52fe..44da3d42 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 {

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