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/[email protected]/ Devicetree: https://lore.kernel.org/lkml/fu4rayftf3i4arf6l6bzqyzsctomglhpiniljkeuj74ftvzlpo@vklca2giwjlw/ To: Rob Clark <[email protected]> To: Sean Paul <[email protected]> To: Konrad Dybcio <[email protected]> To: Dmitry Baryshkov <[email protected]> To: Abhinav Kumar <[email protected]> To: Jessica Zhang <[email protected]> To: Marijn Suijten <[email protected]> To: David Airlie <[email protected]> To: Simona Vetter <[email protected]> To: Maarten Lankhorst <[email protected]> To: Maxime Ripard <[email protected]> To: Thomas Zimmermann <[email protected]> To: Rob Herring <[email protected]> To: Krzysztof Kozlowski <[email protected]> To: Conor Dooley <[email protected]> To: Bjorn Andersson <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Signed-off-by: Akhil P Oommen <[email protected]> --- 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 <[email protected]>
