[PATCH V6 0/5] ARM: exynos4210: Add l2 retention mode cpuidle state

[Kukjin Kim]

Amit Daniel Kachhap wrote:
> 
> Changes since V5:
> *Rebased the patchset against kernel 3.3-rc4
> *Added correct flag for exynos4210 evt1 based board
> *Removed CONFIG_OF from l2 cache configuration as suggested by
>  Olof Johansson <olof at lixom.net>
> 
> Changes since V4:
> *Rebased the patchset against for-next of samsung kernel tree.
> *Added Tushar suggestion of putting a check if L2 cache dt node not found.
> *Added Inder suggestion of removing the BUG_ON check in cpuidle driver.
> 
> Changes since V3:
> *Implemented Russell feedback and moved sleep magic 4byte memory before
> s3c_cpu_resume to data section.
> 
> Changes since V2:
> *Implemented the suggestion of MyungJoo Ham and used INFORM0/1
> registers for resume for some board versions.
> *Added back save/restore through CPU PM notifiers as suggested by
> Lorenzo Pieralisi. This is useful to restore vfp state.
> *some patch modularization (s5p/exynos) and proper commit logs.
> 
> Changes since V1:
> *rebased the whole patch against 3.2-rc1 tree
> *removed GIC save/restore in AFTR cpuidle state as it is external
> to cpu powerdomain
> *Added L2 setup code through device tree
> *Removed only l2 save/restore registers in sleep
> 
> This Patch series adds support for AFTR mode cpuidle state based on
> patch (http://www.spinics.net/lists/arm-kernel/msg132243.html) earlier
> submitted by Jaecheol Lee <jc.lee at samsung.com>.
> 
> This patch uses CPU PM notifiers , common l2 save/restore and
> new cpu_suspend/resume interfaces and is based on the tip of
> master branch of kernel.org tree(v3.3-rc4)
> 
> Amit Daniel Kachhap (5):
>   ARM: exynos: Add support AFTR mode on EXYNOS4210
>   ARM: s5p: add L2 early resume code
>   ARM: exynos: save L2 settings during bootup
>   ARM: exynos: remove useless code to save/restore L2
>   ARM: exynos: Enable l2 configuration through device tree
> 
>  arch/arm/mach-exynos/common.c           |   53 +++++++++---
>  arch/arm/mach-exynos/cpuidle.c          |  147
> ++++++++++++++++++++++++++++++-
>  arch/arm/mach-exynos/include/mach/pmu.h |    2 +
>  arch/arm/mach-exynos/pm.c               |   15 ---
>  arch/arm/plat-s5p/sleep.S               |   44 ++++++++--
>  5 files changed, 225 insertions(+), 36 deletions(-)

Cc'ed Jaecheol Lee and Rob Lee.

OK, looks ok to me and I got the report this works fine on SMDKV310 from
Jaecheol Lee.

I will apply this whole series for v3.4, but I'm not sure how conflicts will
happen with common cpuidle. Let me check it.

Thanks.

Best regards,
Kgene.
--
Kukjin Kim <kgene.kim at samsung.com>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.