linux-kernel - [PATCH 0/6] Support for Adreno 612 GPU

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Message-Id: <20251017-qcs615-spin-2-v1-0-0baa44f80905@oss.qualcomm.com>
Date: Fri, 17 Oct 2025 22:38:28 +0530
From: Akhil P Oommen <akhilpo@....qualcomm.com>
To: Rob Clark <robin.clark@....qualcomm.com>, Sean Paul <sean@...rly.run>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Akhil P Oommen <akhilpo@....qualcomm.com>,
        Jie Zhang <quic_jiezh@...cinc.com>,
        Qingqing Zhou <quic_qqzhou@...cinc.com>
Subject: [PATCH 0/6] Support for Adreno 612 GPU - Respin

This is a respin of an old series [1] that aimed to add support for
Adreno 612 GPU found in SM6150/QCS615 chipsets. In this version, we
have consolidated the previously separate series for DT and driver
support, along with some significant rework.

Regarding A612 GPU, it falls under ADRENO_6XX_GEN1 family and is a cut
down version of A615 GPU. A612 has a new IP called Reduced Graphics
Management Unit or RGMU, a small state machine which helps to toggle
GX GDSC (connected to CX rail) to implement the IFPC feature. Unlike a
full-fledged GMU, the RGMU does not support features such as clock
control, resource voting via RPMh, HFI etc. Therefore, we require linux
clock driver support similar to gmu-wrapper implementations to control
gpu core clock and GX GDSC.

In this series, the description of RGMU hardware in devicetree is more
complete than in previous version. However, the RGMU core is not
initialized from the driver as there is currently no need for it. We do
perform a dummy load of RGMU firmware (now available in linux-firmware)
to ensure that enabling RGMU core in the future won't break backward
compatibility for users.

Due to significant changes compared to the old series, all R-b tags have
been dropped. Please review with fresh eyes.

Last 3 patches are for Bjorn and the rest are for Rob Clark for pick up.

[1] Driver: https://lore.kernel.org/lkml/20241213-a612-gpu-support-v3-1-0e9b25570a69@quicinc.com/
    Devicetree: https://lore.kernel.org/lkml/fu4rayftf3i4arf6l6bzqyzsctomglhpiniljkeuj74ftvzlpo@vklca2giwjlw/

To: Rob Clark <robin.clark@....qualcomm.com>
To: Sean Paul <sean@...rly.run>
To: Konrad Dybcio <konradybcio@...nel.org>
To: Dmitry Baryshkov <lumag@...nel.org>
To: Abhinav Kumar <abhinav.kumar@...ux.dev>
To: Jessica Zhang <jessica.zhang@....qualcomm.com>
To: Marijn Suijten <marijn.suijten@...ainline.org>
To: David Airlie <airlied@...il.com>
To: Simona Vetter <simona@...ll.ch>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
To: Maxime Ripard <mripard@...nel.org>
To: Thomas Zimmermann <tzimmermann@...e.de>
To: Rob Herring <robh@...nel.org>
To: Krzysztof Kozlowski <krzk+dt@...nel.org>
To: Conor Dooley <conor+dt@...nel.org>
To: Bjorn Andersson <andersson@...nel.org>
Cc: linux-arm-msm@...r.kernel.org
Cc: dri-devel@...ts.freedesktop.org
Cc: freedreno@...ts.freedesktop.org
Cc: linux-kernel@...r.kernel.org
Cc: devicetree@...r.kernel.org

Signed-off-by: Akhil P Oommen <akhilpo@....qualcomm.com>
---
Akhil P Oommen (2):
      dt-bindings: display/msm: gpu: Document A612 GPU
      dt-bindings: display/msm/gmu: Document A612 RGMU

Jie Zhang (3):
      drm/msm/a6xx: Add support for Adreno 612
      arm64: dts: qcom: qcs615: Add gpu and rgmu nodes
      arm64: dts: qcom: qcs615-ride: Enable Adreno 612 GPU

Qingqing Zhou (1):
      arm64: dts: qcom: qcs615: add the GPU SMMU node

 .../devicetree/bindings/display/msm/gmu.yaml       |  98 +++++++++++---
 .../devicetree/bindings/display/msm/gpu.yaml       |  31 ++++-
 arch/arm64/boot/dts/qcom/qcs615-ride.dts           |   8 ++
 arch/arm64/boot/dts/qcom/sm6150.dtsi               | 139 ++++++++++++++++++++
 drivers/gpu/drm/msm/adreno/a6xx_catalog.c          |  16 +++
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c              |  87 ++++++++++++-
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c              | 143 ++++++++++++++++++++-
 drivers/gpu/drm/msm/adreno/a6xx_gpu.h              |   1 +
 drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c        |   3 +-
 drivers/gpu/drm/msm/adreno/adreno_gpu.c            |   1 +
 drivers/gpu/drm/msm/adreno/adreno_gpu.h            |  16 ++-
 11 files changed, 511 insertions(+), 32 deletions(-)
---
base-commit: cb6649f6217c0331b885cf787f1d175963e2a1d2
change-id: 20251015-qcs615-spin-2-ed45b0deb998

Best regards,
-- 
Akhil P Oommen <akhilpo@....qualcomm.com>