linux-kernel - [PATCH v3 0/3] Add Mali GPU support for Mediatek MT8370 SoC

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Message-Id: <20250207-mt8370-enable-gpu-v3-0-75e9b902f9c1@collabora.com>
Date: Fri, 07 Feb 2025 16:18:29 +0100
From: Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Boris Brezillon <boris.brezillon@...labora.com>, 
 Steven Price <steven.price@....com>
Cc: kernel@...labora.com, dri-devel@...ts.freedesktop.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, 
 Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
Subject: [PATCH v3 0/3] Add Mali GPU support for Mediatek MT8370 SoC

This patchset adds the support of the ARM Mali G57 MC2 GPU (Valhall-JM,
dual core), integrated in the Mediatek MT8370 SoC, to the panfrost driver
and to the mt8370.dtsi include file.

I've tested this patchset on a Mediatek Genio 510 EVK board,
with a kernel based on linux-next (tag: next-20250207) plus [1] patch
(not needed for building, only for testing to avoid boot issues on this
board).

The panfrost driver probed with the following messages:
```
panfrost 13000000.gpu: clock rate = 390000000
panfrost 13000000.gpu: mali-g57 id 0x9093 major 0x0 minor 0x0 status 0x0
panfrost 13000000.gpu: features: 00000000,000019f7, issues: 00000003,
  80000400
panfrost 13000000.gpu: Features: L2:0x08130206 Shader:0x00000000
  Tiler:0x00000809 Mem:0x1 MMU:0x00002830 AS:0xff JS:0x7
panfrost 13000000.gpu: shader_present=0x5 l2_present=0x1
[drm] Initialized panfrost 1.3.0 for 13000000.gpu on minor 0
```

[1] https://lore.kernel.org/all/20250124191644.2309790-1-robh@kernel.org/

Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
---
Changes in v3:
- Rebased on linux-next (tag: next-20250207)
- Remove prerequisite change/patch ids
- Reword commit messages to better explicit compatible needs 
- Link to v2: https://lore.kernel.org/r/20250130-mt8370-enable-gpu-v2-0-c154d0815db5@collabora.com

Changes in v2:
- Rework "drm/panfrost: Add support for Mali on the MT8370 SoC" to avoid
  data structure duplication, as requested by Krzysztof Kozlowski
- Reword commit messages to use imperative mood and make new compatible
  need more explicit
- Link to v1: https://lore.kernel.org/r/20250116-mt8370-enable-gpu-v1-0-0a6b78e925c8@collabora.com

---
Louis-Alexis Eyraud (3):
      dt-bindings: gpu: mali-bifrost: Add compatible for MT8370 SoC
      drm/panfrost: Add support for Mali on the MT8370 SoC
      arm64: dts: mediatek: mt8370: Enable gpu support

 Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml | 5 ++++-
 arch/arm64/boot/dts/mediatek/mt8370.dtsi                    | 9 +++++++++
 drivers/gpu/drm/panfrost/panfrost_drv.c                     | 1 +
 3 files changed, 14 insertions(+), 1 deletion(-)
---
base-commit: ed58d103e6da15a442ff87567898768dc3a66987
change-id: 20250115-mt8370-enable-gpu-3b6f595fa63d

Best regards,
-- 
Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>