From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shawn Guo Subject: Re: [PATCH v2 1/7] ARM: imx: add timer stop flag to ARM power off state Date: Fri, 2 Feb 2018 14:16:41 +0800 Message-ID: <20180202061605.GL20833@dragon> References: <20180110210453.19264-1-stefan@agner.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20180110210453.19264-1-stefan-XLVq0VzYD2Y@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Stefan Agner Cc: kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org, fabio.estevam-3arQi8VN3Tc@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Anson Huang List-Id: devicetree@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. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html