From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751417AbdBAJtE (ORCPT ); Wed, 1 Feb 2017 04:49:04 -0500 Received: from gloria.sntech.de ([95.129.55.99]:47972 "EHLO gloria.sntech.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751086AbdBAJtC (ORCPT ); Wed, 1 Feb 2017 04:49:02 -0500 From: Heiko Stuebner To: Alexander Kochetkov Cc: Daniel Lezcano , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, Thomas Gleixner , Mark Rutland , Rob Herring , Russell King , Caesar Wang , Huang Tao Subject: Re: [PATCH v6 5/5] ARM: dts: rockchip: disable arm-global-timer for rk3188 Date: Wed, 01 Feb 2017 10:48:53 +0100 Message-ID: <2265306.UfJ65TkXez@phil> User-Agent: KMail/5.2.3 (Linux/4.8.0-2-amd64; KDE/5.27.0; x86_64; ; ) In-Reply-To: <1485866596-32254-6-git-send-email-al.kochet@gmail.com> References: <1485866596-32254-1-git-send-email-al.kochet@gmail.com> <1485866596-32254-6-git-send-email-al.kochet@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Dienstag, 31. Januar 2017, 15:43:16 CET schrieb Alexander Kochetkov: > 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 depending on who is picking that up, they can add my Reviewed-by: Heiko Stuebner if needed. Later on we might need to look at the rk3066 as well, as it might have the same issue.