linux-kernel - [PATCH v2 0/6] Add RSC power domain support

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Date:   Fri, 23 Aug 2019 13:46:57 +0530
From:   Maulik Shah <mkshah@...eaurora.org>
To:     swboyd@...omium.org, agross@...nel.org, david.brown@...aro.org,
        linux-arm-msm@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        bjorn.andersson@...aro.org, evgreen@...omium.org,
        dianders@...omium.org, rnayak@...eaurora.org, ilina@...eaurora.org,
        lsrao@...eaurora.org, ulf.hansson@...aro.org,
        Maulik Shah <mkshah@...eaurora.org>
Subject: [PATCH v2 0/6] Add RSC power domain support

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[1], 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.

Dependencies:

[1] https://lkml.org/lkml/2019/5/13/839

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: Convert to the hierarchical CPU topology layout for sdm845
  arm64: dts: Add rsc power domain for sdm845

 .../devicetree/bindings/soc/qcom/rpmh-rsc.txt |   8 ++
 arch/arm64/boot/dts/qcom/sdm845.dtsi          | 105 +++++++++++++-----
 drivers/soc/qcom/rpmh-internal.h              |   3 +
 drivers/soc/qcom/rpmh-rsc.c                   |  84 ++++++++++++++
 drivers/soc/qcom/rpmh.c                       |  22 ++--
 include/soc/qcom/rpmh.h                       |   5 -
 6 files changed, 185 insertions(+), 42 deletions(-)

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