[PATCH 00/25] OMAP4: PM: suspend, CPU-hotplug and CPUilde support

Vishwanath Sripathy vishwanath.bs at ti.com
Tue Sep 20 07:24:38 EDT 2011 

> -----Original Message-----
> From: linux-arm-kernel-bounces at lists.infradead.org [mailto:linux-
> arm-kernel-bounces at lists.infradead.org] On Behalf Of Santosh
> Shilimkar
> Sent: Sunday, September 04, 2011 7:24 PM
> To: linux-omap at vger.kernel.org
> Cc: khilman at ti.com; Santosh Shilimkar; rnayak at ti.com;
> linux at arm.linux.org.uk; linux-arm-kernel at lists.infradead.org
> Subject: [PATCH 00/25] OMAP4: PM: suspend, CPU-hotplug and CPUilde
> support
>
> This series adds OMAP4 MPUSS (MPU SubSystem) power management
> support for
> suspend (S2R), CPU hotplug and CPUidle.
>
> Most of these patches have been posted and reviewed earlier [1] on
> the list
> and have missed last couple of merge windows because of dependencies.
> New set of patches have diverged more and hence the series version
> continuity isn't maintained.
>
> Below are the main updates from previous versions.
> - Use of generic ARM suspend hooks instead of OMAP custom code.
> - Making use of common GIC code instead of OMAP custom code.
> - Use of generic CPU PM notifiers for CPUIDLE and suspend.
> - Use of CPU PM notifiers and hotplug notifiers for GIC extension.
> - PM support of OMAP4 HS devices.
> - Introduction of interconnect barriers as per the OMAP4
> requirements.
>
> Special thanks to,
> - Kevin Hilman for the detailed reviews.
> - Russell for adding the L2 cache handling support to generic
> suspend.
> - Colin Cross for the generic CPU PM notifier patches.
> - Rajendra Nayak and Paul Walmsley for clock-domain sequencing
> series.
>
> Below series has dependency on Russell's L2 generic suspend support
> [2]
> and earlier posted CPU PM notifiers series [3].
> An integrated branch with these dependencies can be found here [4].
>
> The series is tested on OMAP4430 SDP for suspend, hotplug and
> CPUidle
> with OMAP4 GP and HS (secure) devices.
>
> The following changes since commit
> c6a389f123b9f68d605bb7e0f9b32ec1e3e14132:
>
>   Linux 3.1-rc4 (2011-08-28 21:16:01 -0700)
>
> are available in the git repository at:
>   git://gitorious.org/omap-sw-develoment/linux-omap-dev.git v3.1-
> rc4-omap4-mpuss-pm
I have tested these patch series after adding core retention support  (In
suspend/resume path)[1] and it worked Fine. I do see that Core and MPU are
entering CSWR upon suspend and able to wake up via uart.

You could add tested-by: Vishwanath BS < Vishwanath.bs at ti.com> if you
want.

[1]: git://gitorious.org/omap-pm/linux.git omap4_core_pm

Regards
Vishwa
>
> Santosh Shilimkar (25):
>       ARM: mm: Add strongly ordered descriptor support.
>       OMAP4: Redefine mandatory barriers for OMAP to include
> interconnect barriers.
>       OMAP4: PM: Use custom omap_do_wfi() for suspend and default
> idle.
>       OMAP4: Remove un-used do_wfi() macro.
>       OMAP4: Use WARN_ON() instead of BUG_ON() with graceful exit
>       OMAP4: Export omap4_get_base*() rather than global address
> pointers
>       OMAP4: PM: Add SAR RAM support
>       OMAP4: PM: Keep static dep between MPUSS-EMIF and MPUSS-L3 and
> DUCATI-L3
>       OMAP4: PM: Avoid omap4_pm_init() on OMAP4430 ES1.0
>       OMAP4: PM: Initialise all the clockdomains to supported states
>       OMAP: Add Secure HAL and monitor mode API infrastructure.
>       OMAP: Add support to allocate the memory for secure RAM
>       OMAP4: PM: Add WakeupGen module as OMAP gic_arch_extn
>       OMAP4: PM: Add CPUX OFF mode support
>       OMAP4: Remove __INIT from omap_secondary_startup() to re-use
> it for hotplug.
>       OMAP4: PM: Program CPU1 to hit OFF when off-lined
>       OMAP4: PM: CPU1 wakeup workaround from Low power modes
>       OMAP4: suspend: Add MPUSS power domain RETENTION support
>       OMAP4: PM: Add WakeupGen and secure GIC low power support
>       OMAP4: PM: Add L2X0 cache lowpower support
>       OMAP4: PM: Add MPUSS power domain OSWR support
>       OMAP4: PM: Add power domain statistics support
>       OMAP4: PM: Add CPUidle support
>       OMAP4: cpuidle: Switch to gptimer from twd in deeper C-states.
>       OMAP3: CPUidle: Make use of CPU PM notifiers
>
>  arch/arm/include/asm/mach/map.h                    |    1 +
>  arch/arm/include/asm/pgtable.h                     |    3 +
>  arch/arm/mach-omap2/Kconfig                        |    1 +
>  arch/arm/mach-omap2/Makefile                       |   15 +-
>  arch/arm/mach-omap2/cpuidle34xx.c                  |    7 +
>  arch/arm/mach-omap2/cpuidle44xx.c                  |  206
> ++++++++++
>  arch/arm/mach-omap2/include/mach/barriers.h        |   48 +++
>  arch/arm/mach-omap2/include/mach/omap-secure.h     |   57 +++
>  arch/arm/mach-omap2/include/mach/omap-wakeupgen.h  |   39 ++
>  arch/arm/mach-omap2/include/mach/omap4-common.h    |   70 +++-
>  arch/arm/mach-omap2/omap-headsmp.S                 |    5 -
>  arch/arm/mach-omap2/omap-hotplug.c                 |   14 +-
>  arch/arm/mach-omap2/omap-mpuss-lowpower.c          |  398
> +++++++++++++++++++
>  arch/arm/mach-omap2/omap-secure.c                  |   81 ++++
>  arch/arm/mach-omap2/{omap44xx-smc.S => omap-smc.S} |   23 ++
>  arch/arm/mach-omap2/omap-smp.c                     |   38 ++
>  arch/arm/mach-omap2/omap-wakeupgen.c               |  403
> ++++++++++++++++++++
>  arch/arm/mach-omap2/omap4-common.c                 |   93 +++++-
>  arch/arm/mach-omap2/omap4-sar-layout.h             |   50 +++
>  arch/arm/mach-omap2/pm.h                           |    1 +
>  arch/arm/mach-omap2/pm44xx.c                       |  155 ++++++++-
>  arch/arm/mach-omap2/sleep44xx.S                    |  385
> +++++++++++++++++++
>  arch/arm/mm/mmu.c                                  |    8 +
>  arch/arm/plat-omap/common.c                        |    3 +
>  arch/arm/plat-omap/include/plat/omap44xx.h         |    1 +
>  arch/arm/plat-omap/include/plat/sram.h             |    1 +
>  arch/arm/plat-omap/sram.c                          |   47 ++-
>  27 files changed, 2104 insertions(+), 49 deletions(-)
>  create mode 100644 arch/arm/mach-omap2/cpuidle44xx.c
>  create mode 100644 arch/arm/mach-omap2/include/mach/barriers.h
>  create mode 100644 arch/arm/mach-omap2/include/mach/omap-secure.h
>  create mode 100644 arch/arm/mach-omap2/include/mach/omap-
> wakeupgen.h
>  create mode 100644 arch/arm/mach-omap2/omap-mpuss-lowpower.c
>  create mode 100644 arch/arm/mach-omap2/omap-secure.c
>  rename arch/arm/mach-omap2/{omap44xx-smc.S => omap-smc.S} (70%)
>  create mode 100644 arch/arm/mach-omap2/omap-wakeupgen.c
>  create mode 100644 arch/arm/mach-omap2/omap4-sar-layout.h
>  create mode 100644 arch/arm/mach-omap2/sleep44xx.S
>
> Regards
> Santosh
>
> [1] http://www.mail-archive.com/linux-
> omap at vger.kernel.org/msg47511.html
>
> [2] http://www.spinics.net/lists/arm-kernel/msg138803.html
>
> [3] https://lkml.org/lkml/2011/9/3/49
>
> [4] https://gitorious.org/omap-sw-develoment/linux-omap-
> dev/commits/v3.1-rc4-omap4-pm-integrated
>
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