linux-kernel - [PATCH v5 0/5] Update mdp clk to max supported value to support higher refresh rates

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Message-Id: <1646758500-3776-1-git-send-email-quic_vpolimer@quicinc.com>
Date:   Tue,  8 Mar 2022 22:24:55 +0530
From:   Vinod Polimera <quic_vpolimer@...cinc.com>
To:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc:     Vinod Polimera <quic_vpolimer@...cinc.com>,
        linux-kernel@...r.kernel.org, robdclark@...il.com,
        dianders@...omium.org, swboyd@...omium.org,
        quic_kalyant@...cinc.com
Subject: [PATCH v5 0/5] Update mdp clk to max supported value to support higher refresh rates

Kernel clock driver assumes that initial rate is the
max rate for that clock and was not allowing it to scale
beyond the assigned clock value.

Drop the assigned clock rate property and vote on the mdp clock as per
calculated value during the usecase.

Changes in v2:
- Remove assigned-clock-rate property and set mdp clk during resume sequence.
- Add fixes tag.

Changes in v3:
- Remove extra line after fixes tag.(Stephen Boyd)
- Add similar changes for sc7180, sdm845 which uses opp table for voting mdp clk.(Stephen Boyd)
- Drop patch: "drm/msm/disp/dpu1: set mdp clk to the maximum frequency in opp table"

Changes in v4:
- Add similar change for sm8250.(Dmitry)

Changes in v5:
- Add change to set mdp clk to max frequency in opp table during mdp probe/bind.

Vinod Polimera (5):
  arm64/dts/qcom/sc7280: remove assigned-clock-rate property for mdp clk
  arm64/dts/qcom/sc7180: remove assigned-clock-rate property for mdp clk
  arm64/dts/qcom/sdm845: remove assigned-clock-rate property for mdp clk
  arm64/dts/qcom/sm8250: remove assigned-clock-rate property for mdp clk
  drm/msm/disp/dpu1: set mdp clk to the maximum frequency in opp table
    during probe

 arch/arm64/boot/dts/qcom/sc7180.dtsi    | 9 ++-------
 arch/arm64/boot/dts/qcom/sc7280.dtsi    | 9 ++-------
 arch/arm64/boot/dts/qcom/sdm845.dtsi    | 9 ++-------
 arch/arm64/boot/dts/qcom/sm8250.dtsi    | 9 ++-------
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 3 +++
 5 files changed, 11 insertions(+), 28 deletions(-)

-- 
2.7.4