> > Signed-off-by: Anson Huang <anson.hu...@nxp.com> > --- > arch/arm/mach-imx/cpuidle-imx6sx.c | 10 ++++++++++ > arch/arm/mach-imx/mach-imx6ul.c | 3 +++ > 2 files changed, 13 insertions(+) > > diff --git a/arch/arm/mach-imx/cpuidle-imx6sx.c > b/arch/arm/mach-imx/cpuidle-imx6sx.c > index 41cdce6..b4fcc8ae 100644 > --- a/arch/arm/mach-imx/cpuidle-imx6sx.c > +++ b/arch/arm/mach-imx/cpuidle-imx6sx.c > @@ -9,14 +9,21 @@ > #include <linux/cpuidle.h> > #include <linux/cpu_pm.h> > #include <linux/module.h> > +#include <linux/of.h> > +#include <asm/cacheflush.h> > #include <asm/cpuidle.h> > #include <asm/suspend.h> > > #include "common.h" > #include "cpuidle.h" > > +static bool pl310_available; > +
> static int imx6sx_idle_finish(unsigned long val) > { > + /* check if need to flush internal L2 cache */ > + if (!pl310_available) Just wondering why you need an extra variable here? Calling of_find_compatible_node takes long time at that time? Peter > + flush_cache_all(); > cpu_do_idle(); > > return 0; > @@ -101,5 +108,8 @@ int __init imx6sx_cpuidle_init(void) > imx_gpc_set_arm_power_up_timing(2, 1); > imx_gpc_set_arm_power_down_timing(1, 1); > > + if (of_find_compatible_node(NULL, NULL, "arm,pl310-cache")) > + pl310_available = true; > + > return cpuidle_register(&imx6sx_cpuidle_driver, NULL); > } > diff --git a/arch/arm/mach-imx/mach-imx6ul.c b/arch/arm/mach-imx/mach-imx6ul.c > index c2cd61c..9c5e8f3 100644 > --- a/arch/arm/mach-imx/mach-imx6ul.c > +++ b/arch/arm/mach-imx/mach-imx6ul.c > @@ -16,6 +16,7 @@ > #include <asm/mach/map.h> > > #include "common.h" > +#include "cpuidle.h" > > static void __init imx6ul_enet_clk_init(void) > { > @@ -80,6 +81,8 @@ static void __init imx6ul_init_irq(void) > > static void __init imx6ul_init_late(void) > { > + imx6sx_cpuidle_init(); > + > if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) { > imx6_pm_opp_init(); > platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0); > -- > 1.9.1 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-ker...@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel