[PATCH v10 0/3] Mediatek MT8189 JPEG support

This series is based on linux-next tag next-20260707.

This series depends on commit 7560349ee0d9 ("media: mediatek: jpeg:
support 34bits"), which introduced the `support_34bit` field in struct
mtk_jpeg_variant. That commit has already been merged via the media
tree and is present in linux-next as of next-20260707.

Changes compared with v9:
- Patches 1/3 & 2/3 (dt-bindings: decoder & encoder):
  - Explicitly set `mediatek,larb: false` in the `else` branch of
    the `allOf` block for older SoCs to prevent incorrect configuration
    and ensure backward compatibility.

Changes compared with v8:
- Patches 1/3 & 2/3 (dt-bindings: decoder & encoder):
  - Expand the description of the `mediatek,larb` property to explicitly
    explain its necessity for accurately describing the hardware topology
    (SMI LARB connection for memory bandwidth arbitration), independent
    of the IOMMU driver's implicit handling.

Changes compared with v7:
- Patches 1/3 (dt-bindings: decoder):
  - In the allOf constraints, only keep maxItems: 1 in the then 
    branch and minItems: 2 in the else branch; remove duplicated
    constraints already defined at the top level

Changes compared with v6:
- Patches 1/3 (dt-bindings: decoder):
  update the existing `allOf` condition for mediatek,mt8189-jpgdec to
  make the 'mediatek,larb' property strictly required for MT8189 SoC.
- Patches 2/3 (dt-bindings: encoder):
  Add an `allOf` condition to enforce that the `mediatek,larb` property
  is strictly required when the compatible string contains
  mediatek,mt8189-jpgenc.

Changes compared with v5:
- Patches 1/3 (dt-bindings: decoder):
  - Drop top-level minItems/maxItems for clock-names per Krzysztof's
    review.
  - Refine allOf block to strictly enforce clock constraints.

Changes compared with v4:
- Refines the device tree bindings for JPEG decoder and encoder.
  - Patches 1/3 (dt-bindings: decoder):
    Moved the standalone compatible string mediatek,mt8189-jpgdec
    into the first oneOf entry along with mt2701 and mt8173, as
    suggested by Rob Herring. This correctly groups all independent
    ICs and removes the redundant items wrapper.
  - Patches 2/3 (dt-bindings: encoder):
    Applied the same logic suggested by Rob Herring to the encoder
    binding. Restructured the compatible property to clearly
    distinguish between the standalone IC (mediatek,mt8189-jpgenc)
    and the ICs that must fallback to mediatek,mtk-jpgenc.

Changes compared with v3:
- The v4 is resending the cover-letter, because the v3 cover-letter was
  not sent successfully.

Changes compared with v2:
- Dropped the dts patch (arm64: dts: mt8188: update JPEG encoder/decoder
  compatible) as it belongs to a different tree/series.
- Patches 1/3 (dt-bindings: decoder):
  - Changed the MT8189 compatible to be a standalone `const` instead of
    an `enum`.
  - Added an `allOf` block with conditional checks to enforce the single
    clock ("jpgdec") requirement for MT8189, while preserving the
    two-clock requirement for older SoCs.
  - Updated commit message to reflect the schema structure changes and
    hardware differences.
- Patches 2/3 (dt-bindings: encoder):
  - Changed the MT8189 compatible to be a standalone `const` instead of
    an `enum` inside the `items` list, as it does not fallback to
    "mediatek,mtk-jpgenc" due to 34-bit IOVA requirements.
  - Updated commit message to explain the standalone compatible design.
- Patches 3/3 (media: mediatek: jpeg):
  - Refined commit message for better clarity regarding 34-bit IOVA and
    single clock configuration.

Changes compared with v1:
- Patches 1/4:
  - Updating commit message
- Patches 2/4, 3/4: 
  - Updating commit message
  - Adjusted property descriptions acorrding to hardware requirements
  - Improved formatting for better readability and consistency
- Patches 4/4:
  - Updating commit message

Jianhua Lin (3):
  dt-bindings: media: mediatek-jpeg-decoder: add MT8189 compatible
    string
  dt-bindings: media: mediatek-jpeg-encoder: add MT8189 compatible
    string
  media: mediatek: jpeg: add compatible for MT8189 SoC

 .../bindings/media/mediatek-jpeg-decoder.yaml | 50 ++++++++++++++++---
 .../bindings/media/mediatek-jpeg-encoder.yaml | 38 +++++++++++---
 .../platform/mediatek/jpeg/mtk_jpeg_core.c    | 44 ++++++++++++++++
 3 files changed, 118 insertions(+), 14 deletions(-)

-- 
2.45.2