From: Alexander Kochetkov <al.kochet@gmail.com>
To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org
Cc: Thomas Gleixner <tglx@linutronix.de>,
Heiko Stuebner <heiko@sntech.de>,
Mark Rutland <mark.rutland@arm.com>,
Rob Herring <robh+dt@kernel.org>,
Russell King <linux@armlinux.org.uk>,
Caesar Wang <wxt@rock-chips.com>,
Huang Tao <huangtao@rock-chips.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Alexander Kochetkov <al.kochet@gmail.com>
Subject: [PATCH v4 5/9] ARM: dts: rockchip: disable arm-global-timer for rk3188
Date: Tue, 29 Nov 2016 19:14:48 +0300 [thread overview]
Message-ID: <1480436092-10728-6-git-send-email-al.kochet@gmail.com> (raw)
In-Reply-To: <1480436092-10728-1-git-send-email-al.kochet@gmail.com>
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@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 {
--
1.7.9.5
next prev parent reply other threads:[~2016-11-29 16:16 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-28 14:31 [PATCHv2 00/11] Implement clocksource for rockchip SoC using rockchip timer Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 01/11] dt-bindings: clarify compatible property for rockchip timers Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 02/11] ARM: dts: rockchip: update compatible property for rk3228 timer Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 03/11] ARM: dts: rockchip: update compatible property for rk3229 timer Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 04/11] ARM: dts: rockchip: add timer entries to rk3188 dtsi Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 05/11] clocksource/drivers/rockchip_timer: split bc_timer into rk_timer and rk_clock_event_device Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 06/11] clocksource/drivers/rockchip_timer: low level routines take rk_timer as parameter Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 07/11] clocksource/drivers/rockchip_timer: drop unused rk_base() and rk_ctrl() Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 08/11] clocksource/drivers/rockchip_timer: move TIMER_INT_UNMASK out of rk_timer_enable() Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 09/11] clocksource/drivers/rockchip_timer: implement loading 64bit value into timer Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 10/11] clocksource/drivers/rockchip_timer: implement reading 64bit value from timer Alexander Kochetkov
2016-11-28 14:31 ` [PATCHv2 11/11] clocksource/drivers/rockchip_timer: implement clocksource timer Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 00/13] Implement clocksource for rockchip SoC using rockchip timer Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 01/13] dt-bindings: clarify compatible property for rockchip timers Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 02/13] ARM: dts: rockchip: update compatible property for rk3228 timer Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 03/13] ARM: dts: rockchip: update compatible property for rk3229 timer Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 04/13] ARM: dts: rockchip: add timer entries to rk3188 dtsi Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 05/13] ARM: dts: rockchip: disable arm-global-timer for rk3188 Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 06/13] clocksource/drivers/rockchip_timer: split bc_timer into rk_timer and rk_clock_event_device Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 07/13] clocksource/drivers/rockchip_timer: low level routines take rk_timer as parameter Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 08/13] clocksource/drivers/rockchip_timer: drop unused rk_base() and rk_ctrl() Alexander Kochetkov
2016-11-29 15:03 ` Heiko Stübner
2016-11-29 13:45 ` [PATCH v3 09/13] clocksource/drivers/rockchip_timer: move TIMER_INT_UNMASK out of rk_timer_enable() Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 10/13] clocksource/drivers/rockchip_timer: implement loading 64bit value into timer Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 11/13] clocksource/drivers/rockchip_timer: implement reading 64bit value from timer Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 12/13] clocksource/drivers/rockchip_timer: implement clocksource timer Alexander Kochetkov
2016-11-29 13:45 ` [PATCH v3 13/13] clocksource/drivers/rockchip_timer: Prevent ftrace recursion Alexander Kochetkov
2016-11-29 15:01 ` Heiko Stübner
2016-11-29 15:36 ` Alexander Kochetkov
2016-11-29 16:14 ` [PATCH v4 0/9] Implement clocksource for rockchip SoC using rockchip timer Alexander Kochetkov
2016-11-29 16:14 ` [PATCH v4 1/9] dt-bindings: clarify compatible property for rockchip timers Alexander Kochetkov
2016-12-05 22:22 ` Rob Herring
2016-11-29 16:14 ` [PATCH v4 2/9] ARM: dts: rockchip: update compatible property for rk3228 timer Alexander Kochetkov
2017-01-23 15:40 ` Daniel Lezcano
2017-01-23 16:12 ` Heiko Stübner
2017-01-23 16:13 ` Alexander Kochetkov
2016-11-29 16:14 ` [PATCH v4 3/9] ARM: dts: rockchip: update compatible property for rk3229 timer Alexander Kochetkov
2016-11-29 16:14 ` [PATCH v4 4/9] ARM: dts: rockchip: add timer entries to rk3188 SoC Alexander Kochetkov
2016-11-29 16:14 ` Alexander Kochetkov [this message]
2017-01-23 16:14 ` [PATCH v4 5/9] ARM: dts: rockchip: disable arm-global-timer for rk3188 Heiko Stübner
2016-11-29 16:14 ` [PATCH v4 6/9] clocksource/drivers/rockchip_timer: split bc_timer into rk_timer and rk_clock_event_device Alexander Kochetkov
2017-01-23 16:26 ` Daniel Lezcano
2017-01-23 16:45 ` Alexander Kochetkov
2016-11-29 16:14 ` [PATCH v4 7/9] clocksource/drivers/rockchip_timer: low level routines take rk_timer as parameter Alexander Kochetkov
2016-11-29 16:14 ` [PATCH v4 8/9] clocksource/drivers/rockchip_timer: move TIMER_INT_UNMASK out of rk_timer_enable() Alexander Kochetkov
2016-11-29 16:14 ` [PATCH v4 9/9] clocksource/drivers/rockchip_timer: implement clocksource timer Alexander Kochetkov
2017-01-23 17:09 ` Heiko Stübner
2016-12-21 14:21 ` [PATCH v4 0/9] Implement clocksource for rockchip SoC using rockchip timer Alexander Kochetkov
2017-01-23 14:47 ` Daniel Lezcano
2017-01-23 17:12 ` Heiko Stübner
2017-01-23 17:24 ` Alexander Kochetkov
2017-01-23 17:57 ` Daniel Lezcano
2017-01-26 11:08 ` Alexander Kochetkov
2017-01-26 13:19 ` Daniel Lezcano
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