[PATCH V7 0/4] Add generic PM domain support for Tegra

Jon Hunter
2016-03-04T12:23:02Z

Adds generic PM domain support for Tegra SoCs but this series only
enables support for it on Tegra 64-bit devices. There is no reason why
this cannot be enable for Tegra 32-bit devices, but to keep the patch
series to a minimum only 64-bit devices are enabled so far.

This series has been boot tested on Tegra210 as well as various 32-bit
Tegra platforms.

Summary of changes since V6:
- Dropped removal of PM domains, while infrastructure for removing PM
domains has been sorted out [4]. Please note that because the PMC driver
is never removed, we can simply create the PM domains at the very end
of the PMC probe and WARN if any of the PM domains cannot be
instantiated.
- Dropped support for subdomains because there is currently no need to
support subdomains for Tegra and this simplifies the code substantially.
- Updated DT bindings for Tegra powergates based upon feedback from
Thierry Reding.
- Added patch to remove "#power-domain-cells" that in the Tegra210
device-tree source that was added incorrectly.

Summary of changes since V5 [2]:
- Split series into 2 series, separating PMC fixes [3] from genpd changes
- This series is based upon fixes series (which is now in -next)
- Added patch to fix removal of genpd subdomain
- Added patch to get last genpd that was added
- Fixed locking in function to remove genpd
- Updated Tegra PMC driver to ensure power-domains cannot be controlled
by both legacy Tegra APIs and generic PM domain framework
- Removed powergate list from Tegra PMC driver and updated removal of
power domains to use new genpd APIs.

Summary of changes since V4 [1]:
- Re-worked fix to handle base address on probe failure
- Added patch to lock around simultaneuous accesses to PMC registers
- Added patch to change powergate and rail IDs to unsigned type
- Added patch to fix testing of powergate state
- Updated patch to check for valid powergates to use a bitmap
- Updated Tegra DT PMC bindings per Rob H's feedback
- Updated Tegra power domains binding per Thierry's feedback
- Updated Tegra generic power domain support per Thierry's feedback

Summary of changes since V3 [0]:
- Dropped tegra124 support for now
- Removed MC flush support per feedback from Thierry
- Cleaned up the PMC changes per feedback from Thierry
- Added support for tegra210

[0] http://comments.gmane.org/gmane.linux.ports.tegra/22944
[1] http://marc.info/?l=linux-tegra&m=144924153600529&w=2
[2] http://marc.info/?l=linux-tegra&m=145399885003830&w=2
[3] http://marc.info/?l=linux-tegra&m=145521381331144&w=2
[4] http://marc.info/?l=linux-pm&m=145709064407085&w=2

Jon Hunter (4):
ARM64: tegra: Remove unused #power-domain-cells property
Documentation: DT: bindings: Add power domain info for NVIDIA PMC
soc: tegra: pmc: Add generic PM domain support
ARM64: tegra: select PM_GENERIC_DOMAINS

.../bindings/arm/tegra/nvidia,tegra20-pmc.txt | 80 ++++
arch/arm64/Kconfig.platforms | 2 +
arch/arm64/boot/dts/nvidia/tegra210.dtsi | 2 -
drivers/soc/tegra/pmc.c | 485 ++++++++++++++++++---
include/soc/tegra/pmc.h | 1 +
5 files changed, 507 insertions(+), 63 deletions(-)

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2.1.4