linux-kernel - [PATCH 0/5] clk/qcom: Support gdsc collapse polling using 'reset' inteface

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Date:   Sat, 30 Jul 2022 14:47:39 +0530
From:   Akhil P Oommen <quic_akhilpo@...cinc.com>
To:     freedreno <freedreno@...ts.freedesktop.org>,
        <dri-devel@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
        Rob Clark <robdclark@...il.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        "Stephen Boyd" <swboyd@...omium.org>
CC:     Douglas Anderson <dianders@...omium.org>,
        Akhil P Oommen <quic_akhilpo@...cinc.com>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "Rob Herring" <robh+dt@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>, <devicetree@...r.kernel.org>,
        <linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 0/5] clk/qcom: Support gdsc collapse polling using 'reset' inteface


Some clients like adreno gpu driver would like to ensure that its gdsc
is collapsed at hardware during a gpu reset sequence. This is because it
has a votable gdsc which could be ON due to a vote from another subsystem
like tz, hyp etc or due to an internal hardware signal. To allow
this, gpucc driver can expose an interface to the client driver using
reset framework. Using this the client driver can trigger a polling within
the gdsc driver.

This series is rebased on top of linus's master branch.

Related discussion: https://patchwork.freedesktop.org/patch/493144/


Akhil P Oommen (5):
  dt-bindings: clk: qcom: Support gpu cx gdsc reset
  clk: qcom: Allow custom reset ops
  clk: qcom: gpucc-sc7280: Add cx collapse reset support
  clk: qcom: gdsc: Add a reset op to poll gdsc collapse
  arm64: dts: qcom: sc7280: Add Reset support for gpu

 arch/arm64/boot/dts/qcom/sc7280.dtsi          |  3 +++
 drivers/clk/qcom/gdsc.c                       | 23 +++++++++++++++++++----
 drivers/clk/qcom/gdsc.h                       |  7 +++++++
 drivers/clk/qcom/gpucc-sc7280.c               |  6 ++++++
 drivers/clk/qcom/reset.c                      |  6 ++++++
 drivers/clk/qcom/reset.h                      |  2 ++
 include/dt-bindings/clock/qcom,gpucc-sc7280.h |  3 +++
 7 files changed, 46 insertions(+), 4 deletions(-)

-- 
2.7.4