diff options
| author | Anson Huang <b20788@freescale.com> | 2014-01-09 12:03:16 +0400 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2014-03-05 06:35:01 +0400 |
| commit | 751f7e999afcef157527f5f6f06529c93f8a4022 (patch) | |
| tree | 49dae752f037aa96d2a61ec88ee5179a75c0d86d /arch/arm/mach-imx/mach-imx6sl.c | |
| parent | 848db4a0a17aaf97b8ba5b1f754d635ff622670a (diff) | |
| download | linux-751f7e999afcef157527f5f6f06529c93f8a4022.tar.xz | |
ARM: imx: add cpuidle support for i.mx6sl
Add cpuidle support for i.MX6SL, currently only support
two cpuidle levels(ARM wfi and WAIT mode), and add software
workaround for WAIT mode errata as below:
ERR005311 CCM: After exit from WAIT mode, unwanted interrupt(s) taken
during WAIT mode entry process could cause cache memory
corruption.
Software workaround:
To prevent this issue from occurring, software should ensure that
the ARM to IPG clock ratio is less than 12:5 (that is < 2.4x), before
entering WAIT mode.
Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx/mach-imx6sl.c')
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6sl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-imx6sl.c b/arch/arm/mach-imx/mach-imx6sl.c index 0f4fd4c0ab8e..a26fdb2b1a6f 100644 --- a/arch/arm/mach-imx/mach-imx6sl.c +++ b/arch/arm/mach-imx/mach-imx6sl.c @@ -17,6 +17,7 @@ #include <asm/mach/map.h> #include "common.h" +#include "cpuidle.h" static void __init imx6sl_fec_init(void) { @@ -39,6 +40,8 @@ static void __init imx6sl_init_late(void) /* imx6sl reuses imx6q cpufreq driver */ if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0); + + imx6sl_cpuidle_init(); } static void __init imx6sl_init_machine(void) |