Hello, Sasha!
Following 2 patches must be applied together with the patch: 5e0a39d0f727b35c8b7ef56ba0724c8ceb006297 clocksource/drivers/rockchip_timer: Implement clocksource timer 627988a66aee3c845aa2f1f874a3ddba8adb89d9 ARM: dts: rockchip: Add timer entries to rk3188 SoC
Alexander.
4 марта 2018 г., в 1:33, Sasha Levin Alexander.Levin@microsoft.com написал(а):
From: Alexander Kochetkov al.kochet@gmail.com
[ Upstream commit 500d0aa918a2ea6bb918fee8adcf27dc2912bcd1 ]
The clocksource and the sched_clock provided by the arm_global_timer are quite unstable because their rates depend on the cpu frequency.
On the other side, the arm_global_timer has a higher rating than the rockchip_timer, it will be selected by default by the time framework while we want to use the stable rockchip clocksource.
Let's disable the arm_global_timer in order to have the rockchip clocksource selected by default.
Signed-off-by: Alexander Kochetkov al.kochet@gmail.com Signed-off-by: Daniel Lezcano daniel.lezcano@linaro.org Reviewed-by: Heiko Stuebner heiko@sntech.de Signed-off-by: Sasha Levin alexander.levin@microsoft.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 ddaada788b45..72b0b4cb538f 100644 --- a/arch/arm/boot/dts/rk3188.dtsi +++ b/arch/arm/boot/dts/rk3188.dtsi @@ -404,6 +404,7 @@
&global_timer { interrupts = <GIC_PPI 11 0xf04>;
- status = "disabled";
};
&local_timer {
2.14.1