From 547e8f526959ded88b93dbdbbb6c8549138fefa8 Mon Sep 17 00:00:00 2001 From: Anson Huang Date: Mon, 29 Aug 2016 23:41:12 +0800 Subject: ARM: imx: add cpuidle support for i.mx6ul This patch enables cpuidle driver for i.MX6UL, it reuses i.MX6SX's cpuidle driver, 3 levels of cpuidle supported: 1. ARM WFI; 2. SOC in WAIT mode; 3. SOC in WAIT mode + ARM power off. As i.MX6UL has cortex-A7 CORE with an internal L2 cache, so flushing it before powering down ARM platform is necessary, flush_cache_all() in last step of cpu_suspend has very small overhead, just call it to avoid cache type check for different platforms. Signed-off-by: Anson Huang Signed-off-by: Shawn Guo --- arch/arm/mach-imx/mach-imx6ul.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/arm/mach-imx/mach-imx6ul.c') 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 #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); } -- cgit v1.1