This series adds support for ACD feature for Adreno GPU which helps to lower the power consumption on GX rail and also sometimes is a requirement to enable higher GPU frequencies. At high level, following are the sequences required for ACD feature: 1. Identify the ACD level data for each regulator corner 2. Send a message to AOSS to switch voltage plan 3. Send a table with ACD level information to GMU during every gpu wake up For (1), it is better to keep ACD level data in devicetree because this value depends on the process node, voltage margins etc which are chipset specific. For instance, same GPU HW IP on a different chipset would have a different set of values. So, a new schema which extends opp-v2 is created to add a new property called "qcom,opp-acd-level". ACD support is dynamically detected based on the presence of "qcom,opp-acd-level" property in GPU's opp table. Also, qmp node should be present under GMU node in devicetree for communication with AOSS. The devicetree patch in this series adds the acd-level data for X1-85 GPU present in Snapdragon X1 Elite chipset. The last two devicetree patches are for Bjorn and all the rest for Rob Clark. --- Changes in v4: - Send correct acd data via hfi (Neil) - Fix dt-bindings error - Fix IB vote for the 1.1Ghz OPP - New patch#2 to fix the HFI timeout error seen when ACD is enabled - Link to v3: https://lore.kernel.org/r/20241231-gpu-acd-v3-0-3ba73660e9ca@xxxxxxxxxxx Changes in v3: - Rebased on top of v6.13-rc4 since X1E doesn't boot properly with msm-next - Update patternProperties regex (Krzysztof) - Update MAINTAINERS file include the new opp-v2-qcom-adreno.yaml - Update the new dt properties' description - Do not move qmp_get() to acd probe (Konrad) - New patches: patch#2, #3 and #6 - Link to v2: https://lore.kernel.org/r/20241021-gpu-acd-v2-0-9c25a62803bc@xxxxxxxxxxx Changes in v2: - Removed RFC tag for the series - Improve documentation for the new dt bindings (Krzysztof) - Add fallback compatible string for opp-table (Krzysztof) - Link to v1: https://lore.kernel.org/r/20241012-gpu-acd-v1-0-1e5e91aa95b6@xxxxxxxxxxx --- Akhil P Oommen (7): drm/msm/adreno: Add support for ACD drm/msm/a6xx: Increase HFI response timeout drm/msm: a6x: Rework qmp_get() error handling drm/msm/adreno: Add module param to disable ACD dt-bindings: opp: Add v2-qcom-adreno vendor bindings arm64: dts: qcom: x1e80100: Add ACD levels for GPU arm64: dts: qcom: x1e80100: Add OPPs up to Turbo L3 for GPU .../bindings/opp/opp-v2-qcom-adreno.yaml | 97 ++++++++++++++++++++++ MAINTAINERS | 1 + arch/arm64/boot/dts/qcom/x1e80100.dtsi | 27 +++++- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 96 ++++++++++++++++++--- drivers/gpu/drm/msm/adreno/a6xx_gmu.h | 1 + drivers/gpu/drm/msm/adreno/a6xx_hfi.c | 38 ++++++++- drivers/gpu/drm/msm/adreno/a6xx_hfi.h | 21 +++++ drivers/gpu/drm/msm/adreno/adreno_device.c | 4 + 8 files changed, 270 insertions(+), 15 deletions(-) --- base-commit: dbfac60febfa806abb2d384cb6441e77335d2799 change-id: 20240724-gpu-acd-6c1dc5dcf516 Best regards, -- Akhil P Oommen <quic_akhilpo@xxxxxxxxxxx>
