ARM: imx: add cpuidle support for i.mx6sx
Add cpuidle support for i.MX6SX, derive from i.MX6Q's cpuidle, two levels supported: 1. WFI; 2. WAIT mode. Signed-off-by: Anson Huang <b20788@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
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2 changed files with 10 additions and 1 deletions
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@ -13,6 +13,7 @@
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#include "common.h"
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#include "common.h"
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#include "cpuidle.h"
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#include "cpuidle.h"
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#include "hardware.h"
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static atomic_t master = ATOMIC_INIT(0);
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static atomic_t master = ATOMIC_INIT(0);
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static DEFINE_SPINLOCK(master_lock);
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static DEFINE_SPINLOCK(master_lock);
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@ -66,6 +67,7 @@ static struct cpuidle_driver imx6q_cpuidle_driver = {
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int __init imx6q_cpuidle_init(void)
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int __init imx6q_cpuidle_init(void)
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{
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{
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/* Need to enable SCU standby for entering WAIT modes */
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/* Need to enable SCU standby for entering WAIT modes */
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if (!cpu_is_imx6sx())
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imx_scu_standby_enable();
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imx_scu_standby_enable();
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/* Set INT_MEM_CLK_LPM bit to get a reliable WAIT mode support */
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/* Set INT_MEM_CLK_LPM bit to get a reliable WAIT mode support */
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@ -12,6 +12,7 @@
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#include <asm/mach/map.h>
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#include <asm/mach/map.h>
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#include "common.h"
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#include "common.h"
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#include "cpuidle.h"
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static void __init imx6sx_init_machine(void)
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static void __init imx6sx_init_machine(void)
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{
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{
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@ -38,6 +39,11 @@ static void __init imx6sx_init_irq(void)
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irqchip_init();
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irqchip_init();
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}
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}
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static void __init imx6sx_init_late(void)
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{
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imx6q_cpuidle_init();
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}
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static const char *imx6sx_dt_compat[] __initconst = {
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static const char *imx6sx_dt_compat[] __initconst = {
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"fsl,imx6sx",
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"fsl,imx6sx",
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NULL,
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NULL,
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@ -48,5 +54,6 @@ DT_MACHINE_START(IMX6SX, "Freescale i.MX6 SoloX (Device Tree)")
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.init_irq = imx6sx_init_irq,
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.init_irq = imx6sx_init_irq,
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.init_machine = imx6sx_init_machine,
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.init_machine = imx6sx_init_machine,
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.dt_compat = imx6sx_dt_compat,
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.dt_compat = imx6sx_dt_compat,
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.init_late = imx6sx_init_late,
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.restart = mxc_restart,
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.restart = mxc_restart,
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MACHINE_END
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MACHINE_END
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