On 08/20/2013 05:24 PM, Kevin Hilman wrote:

+ Mike Turquette

Stephen Warren [off-list ref] writes:

quoted

This branch includes a number of enhancements to core SoC support for
Tegra devices. The major new features are:

* Adds a new CPU-power-gated cpuidle state for Tegra114.
* Adds initial system suspend support for Tegra114, initially supporting
  just CPU-power-gating during suspend.
* Adds "LP1" suspend mode support for all of Tegra20/30/114. This mode
  both gates CPU power, and places the DRAM into self-refresh mode.
* A new DT-driven PCIe driver to Tegra20/30. The driver is also moved
  from arch/arm/mach-tegra/ to drivers/pci/host/.

The PCIe driver work depends on the following tag from Thomas Petazzoni:
git://git.infradead.org/linux-mvebu.git mis-3.12.2
... which is merged into the middle of this pull request.

----------------------------------------------------------------

(If the location of the merge into this branch is problematic, just let
me know and I'll rebase everything on top of the merge)

The merge looks fine, but...

quoted

The following changes since commit ad81f0545ef01ea651886dddac4bef6cec930092:

  Linux 3.11-rc1

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra.git tegra-for-3.12-soc

for you to fetch changes up to b4f173752a56187bd55752b0474429202f2ab1d3:

  ARM: tegra: disable LP2 cpuidle state if PCIe is enabled

----------------------------------------------------------------

Jay Agarwal (1):
      PCI: tegra: Add Tegra 30 PCIe support

Joseph Lo (21):
      ARM: tegra: enable Cortex-A15 erratum 798181
      Revert "ARM: tegra: add cpu_disable for hotplug"
      ARM: tegra114: Reprogram GIC CPU interface to bypass IRQ on CPU PM entry
      ARM: tegra114: add low level support for CPU idle powered-down mode
      ARM: tegra114: cpuidle: add powered-down state
      ARM: tegra: do v7_invalidate_l1 only when CPU is Cortex-A9
      ARM: tegra: add a flag for tegra_disable_clean_inv_dcache to do LoUIS or ALL
      ARM: tegra: set up the correct L2 data RAM latency for Cortex-A15
      ARM: tegra: add low level code for Tegra114 cluster power down
      ARM: tegra: shut off the CPU rail when the last CPU in suspend
      ARM: tegra: hook tegra_tear_down_cpu function
      ARM: tegra: flowctrl: add support for cpu_suspend_enter/exit
      clk: tegra: add suspend/resume function for tegra_cpu_car_ops

This one...

quoted

      ARM: tegra: remove the limitation that Tegra114 can't support suspend
      ARM: tegra: add common resume handling code for LP1 resuming
      ARM: tegra: config the polarity of the request of sys clock
      clk: tegra114: add LP1 suspend/resume support

...and this one are drivers/clk and I don't see an ack from the
clock framework maintainer (Mike Turquette) on either.

If Mike is OK for them to go via arm-soc, that should be specified in
the description above (and he should ack them), otherwise they should be
split out and sent via Mike.

A quick glance suggests there are no direct dependencies, so it's
probably best if those changes go through Mike.

There are at least run-time dependencies here, although it's possible
they're limited to "suspend won't work on Tegra114 unless all those
patches are present" rather than "if all these patches aren't present,
something other than a new feature will regress due to this series".

Mike's certainly been CC'd on the patches many times as quite a few
versions of each were posted, and I asked for acks, but got no response.
In the past, that's meant he's fine with the patches...