From mboxrd@z Thu Jan 1 00:00:00 1970 From: l.stach@pengutronix.de (Lucas Stach) Date: Wed, 10 Jan 2018 18:48:42 +0100 Subject: [PATCH 1/7] ARM: imx: add timer stop flag to ARM power off state In-Reply-To: <20180102164223.15230-1-stefan@agner.ch> References: <20180102164223.15230-1-stefan@agner.ch> Message-ID: <1515606522.12538.44.camel@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.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",