[PATCH v4 0/3] drm/msm/dpu: Add INT2 GDSC power domain support for Kaanapali

[Yongxing Mou]

Kaanapali (SM8850) has an additional INT2 GDSC that powers a
subset of DPU source pipes (VIG2/VIG3/DMA5). Without enabling
it, those pipes remain inaccessible.

This series describes CORE and INT2 as the DPU power domains,
updates the DT bindings accordingly, and explicitly attaches both
domains in the DPU driver. DPU performance-state votes on CORE
are propagated through the genpd hierarchy to MMCX.

Signed-off-by: Yongxing Mou <yongxing.mou@xxxxxxxxxxxxxxxx>
---
Changes in v4:
- Keep the widest power-domain constraint in the common schema (Krzysztof)
- Link to v3: https://lore.kernel.org/r/20261014-msm_gdsc2-v3-0-f1ed69014416@xxxxxxxxxxxxxxxx

Changes in v3:
- Replaced MMCX with CORE as the DPU power domain, keeping INT2 as the second domain
  (Dmitry)
- Used generic "core" and "int2" power-domain names (Dmitry)
- Propagated DPU OPP votes from CORE to its parent MMCX domain
- Updated the Kaanapali MDSS example and fixed issues reported by dt_binding_check
- Link to v2: https://lore.kernel.org/r/20260915-msm_gdsc2-v2-0-9157237b8382@xxxxxxxxxxxxxxxx

Changes in v2:
- Moved INT2 GDSC from MDSS to DPU, as it only powers DPU-local source pipes (Dmitry)
- Dropped Glymur — only Kaanapali actually needs INT2 GDSC
- Used if/then in DT binding to restrict second power domain to Kaanapali compatible only (Dmitry, Krzysztof)
- Dropped PD_FLAG_NO_DEV_LINK, let device link auto-attach handle INT2 as runtime-PM supplier (Dmitry)
- Link to v1: https://lore.kernel.org/r/20260720-msm_gdsc2-v1-0-4687866d6cb0@xxxxxxxxxxxxxxxx

---
Yongxing Mou (3):
      dt-bindings: display: msm: Add INT2 GDSC to Kaanapali DPU
      drm/msm/dpu: Attach CORE and INT2 power domains on Kaanapali
      arm64: dts: qcom: Add INT2 GDSC to Kaanapali DPU

 .../bindings/display/msm/dpu-common.yaml           |  3 +-
 .../bindings/display/msm/qcom,kaanapali-mdss.yaml  |  4 ++-
 .../bindings/display/msm/qcom,msm8998-dpu.yaml     |  3 ++
 .../bindings/display/msm/qcom,qcm2290-dpu.yaml     |  3 ++
 .../bindings/display/msm/qcom,sc7180-dpu.yaml      |  3 ++
 .../bindings/display/msm/qcom,sc7280-dpu.yaml      |  3 ++
 .../bindings/display/msm/qcom,sc8180x-dpu.yaml     |  3 ++
 .../bindings/display/msm/qcom,sdm845-dpu.yaml      |  3 ++
 .../bindings/display/msm/qcom,sm6115-dpu.yaml      |  3 ++
 .../bindings/display/msm/qcom,sm6150-dpu.yaml      |  3 ++
 .../bindings/display/msm/qcom,sm7150-dpu.yaml      |  3 ++
 .../bindings/display/msm/qcom,sm8150-dpu.yaml      |  3 ++
 .../bindings/display/msm/qcom,sm8650-dpu.yaml      | 26 ++++++++++++++++++
 arch/arm64/boot/dts/qcom/kaanapali.dtsi            |  4 ++-
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c            | 32 ++++++++++++++++++++++
 15 files changed, 96 insertions(+), 3 deletions(-)
---
base-commit: bd1ecbb61afefc6a8b876ccbc31e9228b44e9eab
change-id: 20260720-msm_gdsc2-cb9230027a2d

Best regards,
-- 
Yongxing Mou <yongxing.mou@xxxxxxxxxxxxxxxx>