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* [PATCH v2 00/13] cpuidle: psci: Support hierarchical CPU arrangement
@ 2019-10-29 16:44 Ulf Hansson
  2019-10-29 16:44 ` [PATCH v2 01/13] cpuidle: psci: Align psci_power_state count with idle state count Ulf Hansson
                   ` (13 more replies)
  0 siblings, 14 replies; 32+ messages in thread
From: Ulf Hansson @ 2019-10-29 16:44 UTC (permalink / raw)
  To: Rafael J . Wysocki, Daniel Lezcano, Sudeep Holla,
	Lorenzo Pieralisi, Mark Rutland, Lina Iyer, linux-pm
  Cc: Rob Herring, Vincent Guittot, Stephen Boyd, Andy Gross,
	Bjorn Andersson, Kevin Hilman, Ulf Hansson, linux-arm-kernel,
	linux-arm-msm

Changes in v2:
	- Avoid to affect the non-OSI path with specific changes for OSI. This
	forced me to re-order the series and a caused more or less minor changes
	to most of the patches.
	- Updated the DT bindings for PSCI to clarify and to include the "psci"
	name of the PM domain to attach to.
	- Replaced patch1 with another patch from Sudeep, solving the same
	problem, but in a different way.

This is the same coverletter as in v1:

This series enables initial support for hierarchical CPU arrangement, managed
by PSCI and its corresponding cpuidle driver. It's based on using the generic
PM domain (genpd), which nowadays also supports devices belonging to CPUs.

The last DTS patch enables the hierarchical topology to be used for the Qcom
410c Dragonboard, which supports the PSCI OS-initiated mode.

Do note, most of the code in this series have been posted earlier, but from the
latest version being reviewed, we agreed on that it was better to re-work the
PSCI backend driver as a first step, simply to get a clean interface towards the
cpuidle driver.

Summary of the main-changes since the last submission [1]:

 - Moved implementation from the psci FW dricer into cpuidle-psci.

 - Re-requesting review of the DT bindings, as we have moved to yaml. No
   changes as such, but tried to clarify a few things in the text.

 - Drop the patch enabling support for CPU hotplug, postponing that to the next
   step.

 - Respect the hierarchical topology in DT only when OSI mode is supported.
   This is to start simple and we can always extend the support on top.

The series is also available at:
git.linaro.org/people/ulf.hansson/linux-pm.git next

Kind regards
Ulf Hansson

[1]
https://lwn.net/Articles/788306/

Lina Iyer (1):
  cpuidle: dt: Support hierarchical CPU idle states

Sudeep Holla (1):
  cpuidle: psci: Align psci_power_state count with idle state count

Ulf Hansson (11):
  dt: psci: Update DT bindings to support hierarchical PSCI states
  firmware: psci: Export functions to manage the OSI mode
  of: base: Add of_get_cpu_state_node() to get idle states for a CPU
    node
  cpuidle: psci: Simplify OF parsing of CPU idle state nodes
  cpuidle: psci: Support hierarchical CPU idle states
  cpuidle: psci: Add a helper to attach a CPU to its PM domain
  cpuidle: psci: Attach CPU devices to their PM domains
  cpuidle: psci: Prepare to use OS initiated suspend mode via PM domains
  cpuidle: psci: Manage runtime PM in the idle path
  cpuidle: psci: Add support for PM domains by using genpd
  arm64: dts: Convert to the hierarchical CPU topology layout for
    MSM8916

 .../devicetree/bindings/arm/cpus.yaml         |  15 +
 .../devicetree/bindings/arm/psci.yaml         | 102 ++++++
 arch/arm64/boot/dts/qcom/msm8916.dtsi         |  57 +++-
 drivers/cpuidle/Makefile                      |   4 +-
 drivers/cpuidle/cpuidle-psci-domain.c         | 302 ++++++++++++++++++
 drivers/cpuidle/cpuidle-psci.c                | 123 +++++--
 drivers/cpuidle/cpuidle-psci.h                |  17 +
 drivers/cpuidle/dt_idle_states.c              |   5 +-
 drivers/firmware/psci/psci.c                  |  18 +-
 drivers/of/base.c                             |  36 +++
 include/linux/of.h                            |   8 +
 include/linux/psci.h                          |   2 +
 12 files changed, 654 insertions(+), 35 deletions(-)
 create mode 100644 drivers/cpuidle/cpuidle-psci-domain.c
 create mode 100644 drivers/cpuidle/cpuidle-psci.h

-- 
2.17.1


^ permalink raw reply	[flat|nested] 32+ messages in thread

end of thread, other threads:[~2019-11-25 10:45 UTC | newest]

Thread overview: 32+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-10-29 16:44 [PATCH v2 00/13] cpuidle: psci: Support hierarchical CPU arrangement Ulf Hansson
2019-10-29 16:44 ` [PATCH v2 01/13] cpuidle: psci: Align psci_power_state count with idle state count Ulf Hansson
2019-10-29 16:44 ` [PATCH v2 02/13] dt: psci: Update DT bindings to support hierarchical PSCI states Ulf Hansson
2019-11-15 17:12   ` Sudeep Holla
2019-11-19 15:15   ` Ulf Hansson
2019-10-29 16:44 ` [PATCH v2 03/13] firmware: psci: Export functions to manage the OSI mode Ulf Hansson
2019-10-29 16:44 ` [PATCH v2 04/13] of: base: Add of_get_cpu_state_node() to get idle states for a CPU node Ulf Hansson
2019-10-29 16:44 ` [PATCH v2 05/13] cpuidle: dt: Support hierarchical CPU idle states Ulf Hansson
2019-10-29 16:44 ` [PATCH v2 06/13] cpuidle: psci: Simplify OF parsing of CPU idle state nodes Ulf Hansson
2019-11-15 17:13   ` Sudeep Holla
2019-10-29 16:44 ` [PATCH v2 07/13] cpuidle: psci: Support hierarchical CPU idle states Ulf Hansson
2019-10-29 16:44 ` [PATCH v2 08/13] cpuidle: psci: Add a helper to attach a CPU to its PM domain Ulf Hansson
2019-11-07  9:13   ` Niklas Cassel
2019-11-07 10:22     ` Ulf Hansson
2019-11-11 11:36       ` Niklas Cassel
2019-11-15 17:13   ` Sudeep Holla
2019-11-18 12:28     ` Ulf Hansson
2019-10-29 16:44 ` [PATCH v2 09/13] cpuidle: psci: Attach CPU devices to their PM domains Ulf Hansson
2019-11-15 17:15   ` Sudeep Holla
2019-11-18 12:50     ` Ulf Hansson
2019-10-29 16:44 ` [PATCH v2 10/13] cpuidle: psci: Prepare to use OS initiated suspend mode via " Ulf Hansson
2019-11-15 17:30   ` Sudeep Holla
2019-11-18 13:37     ` Ulf Hansson
2019-11-22 18:26       ` Lorenzo Pieralisi
2019-11-25 10:44         ` Ulf Hansson
2019-10-29 16:44 ` [PATCH v2 11/13] cpuidle: psci: Manage runtime PM in the idle path Ulf Hansson
2019-11-15 17:32   ` Sudeep Holla
2019-10-29 16:44 ` [PATCH v2 12/13] cpuidle: psci: Add support for PM domains by using genpd Ulf Hansson
2019-10-29 16:44 ` [PATCH v2 13/13] arm64: dts: Convert to the hierarchical CPU topology layout for MSM8916 Ulf Hansson
2019-11-11 11:00 ` [PATCH v2 00/13] cpuidle: psci: Support hierarchical CPU arrangement Ulf Hansson
2019-11-11 14:31   ` Sudeep Holla
2019-11-22  8:14   ` Ulf Hansson

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