From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Kochetkov Subject: [PATCH v4 5/9] ARM: dts: rockchip: disable arm-global-timer for rk3188 Date: Tue, 29 Nov 2016 19:14:48 +0300 Message-ID: <1480436092-10728-6-git-send-email-al.kochet@gmail.com> References: <1480343486-25539-1-git-send-email-al.kochet@gmail.com> <1480436092-10728-1-git-send-email-al.kochet@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1480436092-10728-1-git-send-email-al.kochet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+glpar-linux-rockchip=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org Cc: Mark Rutland , Huang Tao , Heiko Stuebner , Alexander Kochetkov , Daniel Lezcano , Russell King , Rob Herring , Thomas Gleixner , Caesar Wang List-Id: devicetree@vger.kernel.org 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 --- 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 = ; + status = "disabled"; }; &local_timer { -- 1.7.9.5