linux-kernel - [RFC PATCH 0/4] ufs: set power domain performance state when scaling gears

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Message-Id: <20220401145820.1003826-1-krzysztof.kozlowski@linaro.org>
Date:   Fri,  1 Apr 2022 16:58:16 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        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>,
        Bean Huo <beanhuo@...ron.com>,
        Bart Van Assche <bvanassche@....org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.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-scsi@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [RFC PATCH 0/4] 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.

So far I added it as a parallel method to scaling clocks, thus
freq-table-hz stays in DTS, however OPP table should be probably
replace freq-table-hz entirely.

Best regards,
Krzysztof

Krzysztof Kozlowski (4):
  dt-bindings: clock: qcom,gcc-sdm845: add parent power domain
  dt-bindings: ufs: common: allow OPP table
  arm64: dts: qcom: sdm845: control RPMHPD performance states with UFS
  ufs: set power domain performance state when scaling gears

 .../bindings/clock/qcom,gcc-sdm845.yaml       |  3 ++
 .../devicetree/bindings/ufs/ufs-common.yaml   |  4 ++
 arch/arm64/boot/dts/qcom/sdm845.dtsi          | 17 +++++++-
 drivers/scsi/ufs/ufshcd-pltfrm.c              |  6 +++
 drivers/scsi/ufs/ufshcd.c                     | 42 +++++++++++++++----
 drivers/scsi/ufs/ufshcd.h                     |  3 ++
 6 files changed, 65 insertions(+), 10 deletions(-)

-- 
2.32.0