[PATCH v2 0/2] iommu/arm-smmu-qcom: Add SM7250 support

[Ishu Brar via B4 Relay]

This documents SMMUs of Qualcomm SM7250 (Snapdragon
765/765G/768G) and skips Adreno SMMU PRR setup on it.

As on SM8250, firmware resets device when PRR registers are
written, which happens as soon as GPU creates its first per-process
pagetable. Patch 1 adds the compatible to binding (apps SMMU and GPU
SMMU). Patch 2 excludes it from PRR callbacks.

Tested on OnePlus Nord (SM7250) with Vulkan on Adreno 620. The SoC
devicetree nodes are not part of this series.

Signed-off-by: Ishu Brar <patches at brar.si>
---
Changes in v2:
- Patch 1: also add qcom,sm7250-smmu-500 to the allOf block that
  requires the ahb/bus/iface clocks, so the GPU SMMU clocks are
  validated like on sm8250 (sashiko review, confirmed by Krzysztof).
- Patch 2: unchanged.
- Link to v1: https://patch.msgid.link/20261016-smmu-sm7250-v1-0-e11fc0384cfa@brar.si

To: Will Deacon <will at kernel.org>
To: Robin Murphy <robin.murphy at arm.com>
To: "Joerg Roedel (AMD)" <joro at 8bytes.org>
To: Rob Herring <robh at kernel.org>
To: Krzysztof Kozlowski <krzk+dt at kernel.org>
To: Conor Dooley <conor+dt at kernel.org>
To: Rob Clark <robin.clark at oss.qualcomm.com>
Cc: linux-arm-kernel at lists.infradead.org
Cc: iommu at lists.linux.dev
Cc: devicetree at vger.kernel.org
Cc: linux-kernel at vger.kernel.org
Cc: linux-arm-msm at vger.kernel.org

---
Ishu Brar (2):
      dt-bindings: arm-smmu: Document SM7250 SMMU
      iommu/arm-smmu-qcom: Skip PRR setup on SM7250 GPU SMMU

 Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 4 ++++
 drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c            | 1 +
 2 files changed, 5 insertions(+)
---
base-commit: 7b7429c28ac01c8a2952225a4b8a742eec7359c3
change-id: 20261016-smmu-sm7250-957df02d9283

Best regards,
--  
Ishu Brar <patches at brar.si>