Hi! Follow-up on the v5 [1], things have gotten significantly better in the last 9 months, thanks to the efforts on Bifrost support by the Collabora team (and probably others I'm not aware of). I've been testing this series on a MT8183/kukui device, with a chromeos-5.10 kernel [2], and got basic Chromium OS UI up with mesa 20.3.2 (lots of artifacts though). devfreq is currently not supported, as we'll need: - Clock core support for switching the GPU core clock (see 2/4). - Platform-specific handling of the 2-regulator (see 3/4). Since the latter is easy to detect, patch 3/4 just disables devfreq if the more than one regulator is specified in the compatible matching table. [1] https://patchwork.kernel.org/project/linux-mediatek/cover/20200306041345.259332-1-drinkcat@xxxxxxxxxxxx/ [2] https://crrev.com/c/2608070 Changes in v10: - Fix the binding to make sure sram-supply property can be provided. Changes in v9: - Explain why devfreq needs to be disabled for GPUs with >1 regulators. Changes in v8: - Use DRM_DEV_INFO instead of ERROR Changes in v7: - Fix GPU ID in commit message - Fix GPU ID in commit message Changes in v6: - Rebased, actually tested with recent mesa driver. Nicolas Boichat (4): dt-bindings: gpu: mali-bifrost: Add Mediatek MT8183 arm64: dts: mt8183: Add node for the Mali GPU drm/panfrost: devfreq: Disable devfreq when num_supplies > 1 drm/panfrost: Add mt8183-mali compatible string .../bindings/gpu/arm,mali-bifrost.yaml | 28 +++++ arch/arm64/boot/dts/mediatek/mt8183-evb.dts | 6 + .../arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 6 + arch/arm64/boot/dts/mediatek/mt8183.dtsi | 105 ++++++++++++++++++ drivers/gpu/drm/panfrost/panfrost_devfreq.c | 9 ++ drivers/gpu/drm/panfrost/panfrost_drv.c | 10 ++ 6 files changed, 164 insertions(+) -- 2.30.0.284.gd98b1dd5eaa7-goog
