ARM: imx: add suspend/resume support for i.mx6ul

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This patch adds suspend function for i.MX6UL, it supports
"standby" and "mem" mode, for "standby" mode, SoC will
enter STOP mode only, while for "mem" mode, SoC will
enter STOP mode and DDR IO will be set to low power
mode.

As i.MX6UL contains a "Cortex-A7" ARM core which has no
PL310, so we need to avoid any PL310 operations during
suspend/resume, also, we need to flush Cortex-A7's inernal
L2 cache before suspend.

Signed-off-by: Anson Huang <b20788@freescale.com>

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Anson Huang 2015-08-05 01:48:37 +08:00 • committed by Shawn Guo

parent 6ff33f3902

commit ee4a5f838c

4 changed files with 46 additions and 6 deletions

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1

arch/arm/mach-imx/common.h

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2

arch/arm/mach-imx/mach-imx6ul.c

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46

arch/arm/mach-imx/pm-imx6.c

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3

arch/arm/mach-imx/suspend-imx6.S

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