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ARM: imx: support arm power off in cpuidle for i.mx6sx

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This patch introduces an independent cpuidle driver for
i.MX6SX, and supports arm power off in idle, totally
3 levels of cpuidle are supported as below:

1. ARM WFI;
2. SOC in WAIT mode;
3. SOC in WAIT mode + ARM power off.

ARM power off can save at least 5mW power.

This patch also replaces imx6q_enable_rbc with imx6_enable_rbc.

Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This commit is contained in:
Anson Huang
2014-12-17 12:24:12 +08:00
committed by Shawn Guo
parent df096fde08
commit 05136f0897
7 changed files with 144 additions and 8 deletions
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3
arch/arm/mach-imx/Makefile
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@@ -32,8 +32,7 @@ ifeq ($(CONFIG_CPU_IDLE),y)
obj-$(CONFIG_SOC_IMX5) += cpuidle-imx5.o
obj-$(CONFIG_SOC_IMX6Q) += cpuidle-imx6q.o
obj-$(CONFIG_SOC_IMX6SL) += cpuidle-imx6sl.o
# i.MX6SX reuses i.MX6Q cpuidle driver
obj-$(CONFIG_SOC_IMX6SX) += cpuidle-imx6q.o
obj-$(CONFIG_SOC_IMX6SX) += cpuidle-imx6sx.o
endif
ifdef CONFIG_SND_IMX_SOC