[FOR DISCUSSION 0/10] Dove PMU support

[Russell King - ARM Linux <linux@arm.linux.org.uk>]

This is the third re-posting of the patch set which I posted almost 11
months ago to support the Dove PMU, with a few additional changes.
This set is based upon 3.19.

In this set are:

* one patch which Rafael originally acked, but there was indecision
  last time around how to handle them due to potential conflicts with
  work that Ulf was doing.  This patches have been updated to apply
  cleanly to 3.19.  This patch should be applied anyway.

* factor out code which gets a validated generic PM domain, which we
  will make use of in later patches. (new)

* improve the validation of the generic PM domain pointer passed into
  pm_genpd_remove_device(). (updated)

* synchronise the state of the generic PM domain after a device is
  probed.  Other solutions may be possible, but require a larger
  patch series to resolve. (updated for patch 2)

* DT binding documentation for the Dove PMU driver, updated with
  comments from Rob.

* the addition of the core Dove PMU driver, which consists of a reset,
  IRQ controller, and power domains.  The reset and power domain code
  has to be closely related due to the power up/down requirements of
  the GPU/VPU subsystems needing to be performed atomically.  (This
  requirement prevents it using the MFD/syscon infrastructure, because
  we would need to hold spinlocks while calling several different
  sub-drivers.)  This currently needs to be available early on in the
  init sequence, so an explicit initialisation call is added to
  mach-mvebu to achieve this. (updated)

* addition of the RTC interrupt, so we can now receive and act on
  alarms generated by the Dove RTC.

* addition of the DT descriptions for the GPU and VPU power domains.
  These patches do not themselves add the DT descriptions for these
  units, so these patches serve as illustrations how these should be
  described.

 Documentation/devicetree/bindings/soc/dove/pmu.txt |  49 +++
 arch/arm/boot/dts/dove.dtsi                        |  25 ++
 arch/arm/mach-mvebu/Kconfig                        |   1 +
 arch/arm/mach-mvebu/dove.c                         |   2 +
 drivers/amba/bus.c                                 |   4 +-
 drivers/base/platform.c                            |   2 +
 drivers/base/power/common.c                        |  15 +
 drivers/base/power/domain.c                        |  64 +++-
 drivers/i2c/i2c-core.c                             |   2 +
 drivers/soc/Makefile                               |   1 +
 drivers/soc/dove/Makefile                          |   1 +
 drivers/soc/dove/pmu.c                             | 406 +++++++++++++++++++++
 drivers/spi/spi.c                                  |   2 +
 include/linux/pm.h                                 |   1 +
 include/linux/pm_domain.h                          |   4 +
 include/linux/soc/dove/pmu.h                       |   6 +
 16 files changed, 564 insertions(+), 21 deletions(-)

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