linux-kernel - [RFC PATCH v2 0/6] ufs: set power domain performance state when scaling gears

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Message-Id: <20220411154347.491396-1-krzysztof.kozlowski@linaro.org>
Date:   Mon, 11 Apr 2022 17:43:41 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Taniya Das <tdas@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-scsi@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [RFC PATCH v2 0/6] ufs: set power domain performance state when scaling gears

Hi,

This is a proof-of-concept/RFC for changing the performance state
of power rails when scaling gears.

Changes since v1
================
1. Patch #1 qcom,gcc-sdm845: fix typo (Stephen).
2. Patch #2 ufs dt-bindings: not adding Rob's review because patch
   changed significantly.
3. PM: add new code for handling multiple clocks.
4. UFS: deprecate freq-table-hz property and use PM opps instead.

Dependencies
============
The UFS patch depends on PM opp adding multiple clock support.

Best regards,
Krzysztof

Krzysztof Kozlowski (6):
  dt-bindings: clock: qcom,gcc-sdm845: add parent power domain
  dt-bindings: opp: accept array of frequencies
  dt-bindings: ufs: common: add OPP table
  PM: opp: allow control of multiple clocks
  ufs: use PM OPP when scaling gears
  arm64: dts: qcom: sdm845: control RPMHPD performance states with UFS

 .../bindings/clock/qcom,gcc-sdm845.yaml       |   3 +
 .../devicetree/bindings/opp/opp-v2-base.yaml  |   8 +
 .../devicetree/bindings/ufs/ufs-common.yaml   |  34 ++-
 arch/arm64/boot/dts/qcom/sdm845.dtsi          |  43 +++-
 drivers/opp/core.c                            | 205 ++++++++++++++----
 drivers/opp/of.c                              |  48 ++++
 drivers/opp/opp.h                             |   9 +-
 drivers/scsi/ufs/ufshcd-pltfrm.c              |  69 ++++++
 drivers/scsi/ufs/ufshcd.c                     | 115 +++++++---
 drivers/scsi/ufs/ufshcd.h                     |   4 +
 include/linux/pm_opp.h                        |  23 ++
 11 files changed, 475 insertions(+), 86 deletions(-)

-- 
2.32.0