From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lucas Stach Subject: Re: [PATCH 1/7] ARM: imx: add timer stop flag to ARM power off state Date: Wed, 10 Jan 2018 18:48:42 +0100 Message-ID: <1515606522.12538.44.camel@pengutronix.de> References: <20180102164223.15230-1-stefan@agner.ch> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20180102164223.15230-1-stefan-XLVq0VzYD2Y@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Stefan Agner , shawnguo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org Cc: mark.rutland-5wv7dgnIgG8@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Anson Huang , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, fabio.estevam-3arQi8VN3Tc@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: devicetree@vger.kernel.org Am Dienstag, den 02.01.2018, 17:42 +0100 schrieb Stefan Agner: > 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. > > Cc: Anson Huang > Signed-off-by: Stefan Agner Reviewed-by: Lucas Stach > --- >  arch/arm/mach-imx/cpuidle-imx6sx.c | 1 + >  1 file changed, 1 insertion(+) > > diff --git a/arch/arm/mach-imx/cpuidle-imx6sx.c b/arch/arm/mach- > imx/cpuidle-imx6sx.c > index c5a5c3a70ab1..d0f14b761ff7 100644 > --- a/arch/arm/mach-imx/cpuidle-imx6sx.c > +++ b/arch/arm/mach-imx/cpuidle-imx6sx.c > @@ -89,6 +89,7 @@ static struct cpuidle_driver imx6sx_cpuidle_driver > = { >    */ >   .exit_latency = 300, >   .target_residency = 500, > + .flags = CPUIDLE_FLAG_TIMER_STOP, >   .enter = imx6sx_enter_wait, >   .name = "LOW-POWER-IDLE", >   .desc = "ARM power off", -- 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