[GIT PULL 2/4] ARM: tegra: core SoC enhancements for 3.12

Kevin Hilman khilman at linaro.org
Tue Aug 20 19:24:47 EDT 2013

+ Mike Turquette

Stephen Warren <swarren at wwwdotorg.org> writes:

> 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...

> 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...

>       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.



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