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Sat, 3 Mar 2018 17:39:57 -0500 Received: from mail-co1nam03on0096.outbound.protection.outlook.com ([104.47.40.96]:45422 "EHLO NAM03-CO1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S935129AbeCCWjz (ORCPT ); Sat, 3 Mar 2018 17:39:55 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Alexander Kochetkov , Daniel Lezcano , Sasha Levin Subject: [PATCH AUTOSEL for 4.4 062/115] ARM: dts: rockchip: disable arm-global-timer for rk3188 Thread-Topic: [PATCH AUTOSEL for 4.4 062/115] ARM: dts: rockchip: disable arm-global-timer for rk3188 Thread-Index: AQHTsz9c9rCK0LKlmUeCcl6XCZULlQ== Date: Sat, 3 Mar 2018 22:31:24 +0000 Message-ID: <20180303223010.27106-62-alexander.levin@microsoft.com> References: <20180303223010.27106-1-alexander.levin@microsoft.com> In-Reply-To: <20180303223010.27106-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;MW2PR2101MB1113;7:6wch9kw0t5a32dZsjbLZyojbwOTAoxf5HNukbDPeWKgqdf6GqaVxlPoSJTnb7hW73s2ylBpv1GgXiqWyVzae0H1+i5obVMH1RmyiG6njiy4i619aFp6R+MWeXRHwLyigU4XrlDsVYKD+RrNxAS8pfw9nROzkRPlpmATHTpShXUGcOmDK+We8OfjFnVxgUYUL45TtUBTikkB2ZnElNmuapuNRAG8+68Mqc7VtaDQu1JZVWWDEO2kqUTlzxqKxiA4V x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 5a4725d5-64a1-4db8-7cff-08d58157ae4b x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603307)(7193020);SRVR:MW2PR2101MB1113; 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authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-message-info: P5+cG/EiN57LYL54gMDpAAGbtpNdXaJNaBo8nY3vkG4vpl4I9I9WuUaJ8sivKREmqaMr03GDivrON19d8Y1sM91ksWBC9aY7ve8dZa7XfHK3yQFSf1mCrx/7JTMTjH45Fanhzt4xWcn+VA39+axr92NCN2vaHdIKNhhHe4ox3v8= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5a4725d5-64a1-4db8-7cff-08d58157ae4b X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Mar 2018 22:31:24.7915 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW2PR2101MB1113 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Alexander Kochetkov [ 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 Signed-off-by: Daniel Lezcano Reviewed-by: Heiko Stuebner Signed-off-by: Sasha Levin --- 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 6399942f1840..0e5142b6e914 100644 --- a/arch/arm/boot/dts/rk3188.dtsi +++ b/arch/arm/boot/dts/rk3188.dtsi @@ -513,6 +513,7 @@ =20 &global_timer { interrupts =3D ; + status =3D "disabled"; }; =20 &local_timer { --=20 2.14.1