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Sat, 3 Mar 2018 17:41:53 -0500 Received: from mail-by2nam01on0129.outbound.protection.outlook.com ([104.47.34.129]:5824 "EHLO NAM01-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S934705AbeCCWlp (ORCPT ); Sat, 3 Mar 2018 17:41:45 -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 3.18 34/63] ARM: dts: rockchip: disable arm-global-timer for rk3188 Thread-Topic: [PATCH AUTOSEL for 3.18 34/63] ARM: dts: rockchip: disable arm-global-timer for rk3188 Thread-Index: AQHTsz+nPNnd+hGnDkao1Tuarkhp1g== Date: Sat, 3 Mar 2018 22:33:30 +0000 Message-ID: <20180303223228.27323-34-alexander.levin@microsoft.com> References: <20180303223228.27323-1-alexander.levin@microsoft.com> In-Reply-To: <20180303223228.27323-1-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;MW2SPR01MB06;7:L9XNHkKrF12rB5ABx56CnU5qYwwqmpnXft/dA07fFF6kUTiDyKwXBL6x+tzaSYuh5G+z46PSIEe0l01kabDnrLn2crzDiNAZo+HJLmGncy/RriYIAzzgc4sk4u6mOktu9h/MNgMufZ+gFXisce4fxopNf0f860ach1Bec0SrJtET+UTVbh5UvmHKLXywLi0X2a5l8l03hVWNSLHV9fVezZZyDXIcM1/+XRMZCg3YADuwpvqaHr7VgU/L3Rc8P909 x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 66bb15c5-4b3a-4a68-715a-08d58157f040 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(4534165)(4627221)(201703031133081)(201702281549075)(48565401081)(5600026)(4604075)(3008032)(2017052603307)(7193020);SRVR:MW2SPR01MB06; 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x-microsoft-antispam-message-info: hR6OVgWdW7IROl+sQjfrtNh+N8PFMhKYXKUMykjLCUvTvo/Z8KaM0Gwrs496vJH83u9f98sXCiorFuwhKsewkPWVTLGgzTpJqchlgzqL1qAG7j1LiAIR9/a9QUvUVnUqynT2uI9E4mvkiMuJqDeJip8bvjl67tnNWih9haj/hCo= 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: 66bb15c5-4b3a-4a68-715a-08d58157f040 X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Mar 2018 22:33:30.1851 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW2SPR01MB06 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 ddaada788b45..72b0b4cb538f 100644 --- a/arch/arm/boot/dts/rk3188.dtsi +++ b/arch/arm/boot/dts/rk3188.dtsi @@ -404,6 +404,7 @@ =20 &global_timer { interrupts =3D ; + status =3D "disabled"; }; =20 &local_timer { --=20 2.14.1