linux-kernel - [PATCH v5 0/6] Add support for GPU DDR BW scaling

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Message-Id: <1594644106-22449-1-git-send-email-akhilpo@codeaurora.org>
Date:   Mon, 13 Jul 2020 18:11:40 +0530
From:   Akhil P Oommen <akhilpo@...eaurora.org>
To:     freedreno@...ts.freedesktop.org
Cc:     dri-devel@...edesktop.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, jcrouse@...eaurora.org,
        smasetty@...eaurora.org, devicetree@...r.kernel.org,
        mka@...omium.org, saravanak@...gle.com, sibis@...eaurora.org,
        viresh.kumar@...aro.org, jonathan@...ek.ca, robdclark@...il.com
Subject: [PATCH v5 0/6] Add support for GPU DDR BW scaling

This series adds support for GPU DDR bandwidth scaling and is based on the
bindings from Georgi [1]. This is mostly a rebase of Sharat's patches [2] on the
tip of msm-next branch.

Changes from v4:
- Squashed a patch to another one to fix Jonathan's comment
- Add back the pm_runtime_get_if_in_use() check

Changes from v3:
- Rebased on top of Jonathan's patch which adds support for changing gpu freq
through hfi on newer targets
- As suggested by Rob, left the icc_path intact for pre-a6xx GPUs

[1] https://kernel.googlesource.com/pub/scm/linux/kernel/git/vireshk/pm/+log/opp/linux-next/
[2] https://patchwork.freedesktop.org/series/75291/

Sharat Masetty (6):
  dt-bindings: drm/msm/gpu: Document gpu opp table
  drm: msm: a6xx: send opp instead of a frequency
  drm: msm: a6xx: use dev_pm_opp_set_bw to scale DDR
  arm64: dts: qcom: SDM845: Enable GPU DDR bw scaling
  arm64: dts: qcom: sc7180: Add interconnects property for GPU
  arm64: dts: qcom: sc7180: Add opp-peak-kBps to GPU opp

 .../devicetree/bindings/display/msm/gpu.txt        |  28 ++++++
 arch/arm64/boot/dts/qcom/sc7180.dtsi               |   9 ++
 arch/arm64/boot/dts/qcom/sdm845.dtsi               |   9 ++
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c              | 108 ++++++++++++---------
 drivers/gpu/drm/msm/adreno/a6xx_gpu.h              |   2 +-
 drivers/gpu/drm/msm/msm_gpu.c                      |   3 +-
 drivers/gpu/drm/msm/msm_gpu.h                      |   3 +-
 7 files changed, 112 insertions(+), 50 deletions(-)

-- 
2.7.4