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ARM: imx: add cpuidle support for i.mx6sx

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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>
This commit is contained in:
Anson Huang 2014-06-20 13:44:05 +08:00 committed by Shawn Guo
parent ff843d621b
commit a25d67a437
2 changed files with 10 additions and 1 deletions
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4
arch/arm/mach-imx/cpuidle-imx6q.c
View file

@ -13,6 +13,7 @@
#include "common.h"
#include "cpuidle.h"
#include "hardware.h"
static atomic_t master = ATOMIC_INIT(0);
static DEFINE_SPINLOCK(master_lock);
@ -66,7 +67,8 @@ static struct cpuidle_driver imx6q_cpuidle_driver = {
int __init imx6q_cpuidle_init(void)
{
/* Need to enable SCU standby for entering WAIT modes */
imx_scu_standby_enable();
if (!cpu_is_imx6sx())
imx_scu_standby_enable();
/* Set INT_MEM_CLK_LPM bit to get a reliable WAIT mode support */
imx6q_set_int_mem_clk_lpm();

7
arch/arm/mach-imx/mach-imx6sx.c
View file

@ -12,6 +12,7 @@
#include <asm/mach/map.h>
#include "common.h"
#include "cpuidle.h"
static void __init imx6sx_init_machine(void)
{
@ -38,6 +39,11 @@ static void __init imx6sx_init_irq(void)
irqchip_init();
}
static void __init imx6sx_init_late(void)
{
imx6q_cpuidle_init();
}
static const char *imx6sx_dt_compat[] __initconst = {
"fsl,imx6sx",
NULL,
@ -48,5 +54,6 @@ DT_MACHINE_START(IMX6SX, "Freescale i.MX6 SoloX (Device Tree)")
.init_irq = imx6sx_init_irq,
.init_machine = imx6sx_init_machine,
.dt_compat = imx6sx_dt_compat,
.init_late = imx6sx_init_late,
.restart = mxc_restart,
MACHINE_END