diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-imx/cpuidle-imx6sx.c | 10 | ||||
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6ul.c | 3 |
2 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/cpuidle-imx6sx.c b/arch/arm/mach-imx/cpuidle-imx6sx.c index 261aaa4..c5a5c3a 100644 --- a/arch/arm/mach-imx/cpuidle-imx6sx.c +++ b/arch/arm/mach-imx/cpuidle-imx6sx.c @@ -9,6 +9,7 @@ #include <linux/cpuidle.h> #include <linux/cpu_pm.h> #include <linux/module.h> +#include <asm/cacheflush.h> #include <asm/cpuidle.h> #include <asm/suspend.h> @@ -17,6 +18,15 @@ static int imx6sx_idle_finish(unsigned long val) { + /* + * for Cortex-A7 which has an internal L2 + * cache, need to flush it before powering + * down ARM platform, since flushing L1 cache + * here again has very small overhead, compared + * to adding conditional code for L2 cache type, + * just call flush_cache_all() is fine. + */ + flush_cache_all(); cpu_do_idle(); return 0; diff --git a/arch/arm/mach-imx/mach-imx6ul.c b/arch/arm/mach-imx/mach-imx6ul.c index 5d9bfab..08308a1 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) { @@ -79,6 +80,8 @@ static void __init imx6ul_init_irq(void) static void __init imx6ul_init_late(void) { + imx6sx_cpuidle_init(); + if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0); } |