From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751630AbeBBGQ4 (ORCPT ); Fri, 2 Feb 2018 01:16:56 -0500 Received: from mail.kernel.org ([198.145.29.99]:57790 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750737AbeBBGQt (ORCPT ); Fri, 2 Feb 2018 01:16:49 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1D06C21738 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=shawnguo@kernel.org Date: Fri, 2 Feb 2018 14:16:41 +0800 From: Shawn Guo To: Stefan Agner Cc: kernel@pengutronix.de, fabio.estevam@nxp.com, robh+dt@kernel.org, mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Anson Huang Subject: Re: [PATCH v2 1/7] ARM: imx: add timer stop flag to ARM power off state Message-ID: <20180202061605.GL20833@dragon> References: <20180110210453.19264-1-stefan@agner.ch> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180110210453.19264-1-stefan@agner.ch> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 10, 2018 at 10:04:47PM +0100, Stefan Agner wrote: > When the CPU is in ARM power off state the ARM architected > timers are stopped. The flag is already present in the higher > power WAIT mode. > > This allows to use the ARM generic timer on i.MX 6UL/6ULL SoC. > Without the flag the kernel freezes when the timer enters the > first time ARM power off mode. > > Note: The default timer on i.MX6SX is the i.MX GPT timer which is > not disabled during CPU idle. However, the timer is not affected > by the CPUIDLE_FLAG_TIMER_STOP flag. The flag only affects CPU > local timers. > > Cc: Anson Huang > Signed-off-by: Stefan Agner > Reviewed-by: Lucas Stach Applied all, thanks.