[PATCH v3 0/7] Add RSC power domain support

Maulik Shah
2020-02-03T13:36:55Z

Changes in v3:
- Address Rob's comment on dt property value
- Address Stephen's comments on rpmh-rsc driver change
- Include sc7180 cpuidle low power mode changes from [1]
- Include hierarchical domain idle states converter change from [2]

Changes in v2:
- Add Stephen's Reviewed-By to the first three patches
- Addressed Stephen's comments on fourth patch
- Include changes to connect rpmh domain to cpuidle and genpds

Resource State Coordinator (RSC) is responsible for powering off/lowering
the requirements from CPU subsystem for the associated hardware like buses,
clocks, and regulators when all CPUs and cluster is powered down.

RSC power domain uses last-man activities provided by genpd framework based on
Ulf Hansoon's patch series[3], when the cluster of CPUs enter deepest idle
states. As a part of domain poweroff, RSC can lower resource state requirements
by flushing the cached sleep and wake state votes for resources.

[1] https://patchwork.kernel.org/patch/11218965
[2] https://patchwork.kernel.org/patch/10941671
[3] https://patchwork.kernel.org/project/linux-arm-msm/list/?series=222355

Maulik Shah (6):
drivers: qcom: rpmh: fix macro to accept NULL argument
drivers: qcom: rpmh: remove rpmh_flush export
dt-bindings: soc: qcom: Add RSC power domain specifier
drivers: qcom: rpmh-rsc: Add RSC power domain support
arm64: dts: qcom: sc7180: Add cpuidle low power states
arm64: dts: qcom: sc7180: Convert to the hierarchical CPU topology
layout

Ulf Hansson (1):
drivers: firmware: psci: Add hierarchical domain idle states converter

.../devicetree/bindings/soc/qcom/rpmh-rsc.txt | 9 ++
arch/arm64/boot/dts/qcom/sc7180.dtsi | 133 ++++++++++++++++++++
drivers/cpuidle/cpuidle-psci-domain.c | 137 ++++++++++++++++++---
drivers/cpuidle/cpuidle-psci.c | 41 +++---
drivers/cpuidle/cpuidle-psci.h | 11 ++
drivers/soc/qcom/rpmh-internal.h | 3 +
drivers/soc/qcom/rpmh-rsc.c | 81 ++++++++++++
drivers/soc/qcom/rpmh.c | 22 ++--
include/soc/qcom/rpmh.h | 5 -
9 files changed, 389 insertions(+), 53 deletions(-)

--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation