[PATCH 00/10] ARM: OMAP5 / DRA7: Add framework for suspend and cpuidle

Nishanth Menon nm at ti.com
Fri Aug 22 07:02:24 PDT 2014

The following series are various fixes and improvements for
supporting suspend-to-ram. This depends on the following for basic functionality:
series 1/6 where powerdomain fixes were involved.
This will at least allow wake up from an internal source such as from a wakeup timer:
For example with https://github.com/nmenon/linux-2.6-playground/commit/92e5e7407aa707ad6be8ae3b5bf21cfc741daab6

pinctrl series allows for external wakeup event sources like pushbutton etc.

NOTE: OMAP5 and DRA7 definitions of power states and suspend targets
are almost identical (except for core power domain target state as part of suspend).

NOTE: This also needs missing hwmod and dts entries for various
peripherals that will eventually arrive over a period of time.

This is part 5/6 series which actually enables framework for
suspend-to-ram and cpuidle for OMAP5 and DRA7

Each of series is based on v3.17-rc1 and this specific series is available:
weblink: https://github.com/nmenon/linux-2.6-playground/commits/push/v3.17/powerdomain-fixes

git repo: https://github.com/nmenon/linux-2.6-playground.git push/v3.17/powerdomain-fixes

An complete integrated branch is available here: https://github.com/nmenon/linux-2.6-playground/commits/testing/v3.17/cpu-idle-suspend-dra7-omap5-framework

Example test log:
DRA7 based BeagleBoard X15: http://slexy.org/view/s2jgsH8bos (wakeup from external using pinctrl wakeup).
OMAP5UEVM: http://slexy.org/view/s20MiQJQIq (external pinctrl not hooked)

Rajendra Nayak (3):
  ARM: OMAP5 / DRA7: PM: Avoid all SAR saves
  ARM: OMAP5 / DRA7: Enable CPU RET on suspend
  ARM: DRA7: Add hook in SoC initcalls to enable pm initialization

Santosh Shilimkar (7):
  ARM: OMAP5 / DRA7: PM: Update CPU context register offset
  ARM: OMAP5 / DRA7: PM: Set MPUSS-EMIF clock-domain static dependency
  ARM: OMAP5 / DRA7: PM / wakeupgen: Enables ES2 PM mode by default
  ARM: OMAP5 / DRA7: PM: Enable Mercury retention mode on CPUx
  ARM: OMAP5 / DRA7: PM: Provide a dummy startup function for CPU
  ARM: OMAP5/DRA7: PM: cpuidle MPU CSWR support
  ARM: OMAP5: Add hook in SoC initcalls to enable pm initialization

 arch/arm/mach-omap2/common.h              |    2 +-
 arch/arm/mach-omap2/cpuidle44xx.c         |   82 ++++++++++++++++++++++-
 arch/arm/mach-omap2/io.c                  |    6 ++
 arch/arm/mach-omap2/omap-mpuss-lowpower.c |  102 ++++++++++++++++++++---------
 arch/arm/mach-omap2/omap-secure.h         |    1 +
 arch/arm/mach-omap2/omap-wakeupgen.c      |   19 +++++-
 arch/arm/mach-omap2/omap-wakeupgen.h      |    1 +
 arch/arm/mach-omap2/pm44xx.c              |   47 +++++++++++--
 8 files changed, 220 insertions(+), 40 deletions(-)


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