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From: Maulik Shah <mkshah@codeaurora.org>
To: swboyd@chromium.org, mka@chromium.org, evgreen@chromium.org,
	bjorn.andersson@linaro.org
Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	agross@kernel.org, dianders@chromium.org, rnayak@codeaurora.org,
	ilina@codeaurora.org, lsrao@codeaurora.org,
	Maulik Shah <mkshah@codeaurora.org>
Subject: [PATCH v10 0/3] Invoke rpmh_flush for non OSI targets
Date: Tue,  3 Mar 2020 17:56:52 +0530	[thread overview]
Message-ID: <1583238415-18686-1-git-send-email-mkshah@codeaurora.org> (raw)

Changes in v10:
- Address Evan's comments to update commit message on change 2
- Add Evan's Reviewed by on change 2
- Remove comment from rpmh_flush() related to last CPU invoking it
- Rebase all changes on top of next-20200302

Changes in v9:
- Keep rpmh_flush() to invoke from within cache_lock
- Remove comments related to only last cpu invoking rpmh_flush()

Changes in v8:
- Address Stephen's comments on changes 2 and 3
- Add Reviewed by from Stephen on change 1

Changes in v7:
- Address Srinivas's comments to update commit text
- Add Reviewed by from Srinivas

Changes in v6:
- Drop 1 & 2 changes from v5 as they already landed in maintainer tree
- Drop 3 & 4 changes from v5 as no user at present for power domain in rsc
- Rename subject to appropriate since power domain changes are dropped
- Rebase other changes on top of next-20200221

Changes in v5:
- Add Rob's Acked by on dt-bindings change
- Drop firmware psci change
- Update cpuidle stats in dtsi to follow PC mode
- Include change to update dirty flag when data is updated from [4]
- Add change to invoke rpmh_flush when caches are dirty

Changes in v4:
- Add change to allow hierarchical topology in PC mode
- Drop hierarchical domain idle states converter from v3
- Address Merge sc7180 dtsi change to add low power modes

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 various
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
[4] https://patchwork.kernel.org/project/linux-arm-msm/list/?series=236503

Maulik Shah (3):
  arm64: dts: qcom: sc7180: Add cpuidle low power states
  soc: qcom: rpmh: Update dirty flag only when data changes
  soc: qcom: rpmh: Invoke rpmh_flush for dirty caches

 arch/arm64/boot/dts/qcom/sc7180.dtsi | 78 ++++++++++++++++++++++++++++++++++++
 drivers/soc/qcom/rpmh.c              | 27 ++++++++++---
 2 files changed, 100 insertions(+), 5 deletions(-)

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

             reply	other threads:[~2020-03-03 12:27 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-03 12:26 Maulik Shah [this message]
2020-03-03 12:26 ` [PATCH v10 1/3] arm64: dts: qcom: sc7180: Add cpuidle low power states Maulik Shah
2020-03-03 12:26 ` [PATCH v10 2/3] soc: qcom: rpmh: Update dirty flag only when data changes Maulik Shah
2020-03-04 23:21   ` Doug Anderson
2020-03-05 11:10     ` Maulik Shah
2020-03-05 22:22       ` Doug Anderson
2020-03-10 11:03         ` Maulik Shah
2020-03-10 15:46           ` Doug Anderson
2020-03-11  5:40             ` Maulik Shah
2020-03-03 12:26 ` [PATCH v10 3/3] soc: qcom: rpmh: Invoke rpmh_flush() for dirty caches Maulik Shah
2020-03-04 23:22   ` Doug Anderson
2020-03-05 11:30     ` Maulik Shah
2020-03-05 22:20       ` Doug Anderson
2020-03-10 11:00         ` Maulik Shah

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