This series adds support for handling "v2" firmware's IOMMU, found on at least MSM8956 and MSM8976 (some other SoCs also need the same but I honestly don't remember which ones precisely). This is strictly required to get functional IOMMUs on these SoCs. I'm sorry for not performing a much needed schema conversion on qcom,iommu.txt, but I really didn't have time to do that :-( This series was tested on Sony Xperia X and X Compact (MSM8956): ADSP, LPASS, Venus, MSS, MDP and GPU are happy :-) Changes in v4: - Rebase over next-20230619 - Rewrite qcom,iommu.txt changes to qcom,iommu.yaml - Changed reset writes to only disable CB through CB_SCTLR and reset CB_FSR and CB_FAR - Addressed misc reviewer's comments Changes in v3: - Removed useless FSRRESTORE reset and definition as pointed out in Robin Murphy's review - Fixed qcom,iommu.txt changes: squashed MSM8976 compatible string addition with msm-iommu-v2 generics addition Changes in v2: - Added back Marijn's notes (sorry man!) - Added ARM_SMMU_CB_FSRRESTORE definition - Changed context bank reset to properly set FSR and FSRRESTORE AngeloGioacchino Del Regno (6): dt-bindings: iommu: qcom,iommu: Add qcom,ctx-num property iommu/qcom: Use the asid read from device-tree if specified iommu/qcom: Disable and reset context bank before programming iommu/qcom: Index contexts by asid number to allow asid 0 dt-bindings: iommu: qcom,iommu: Add QSMMUv2 and MSM8976 compatibles iommu/qcom: Add support for QSMMUv2 and QSMMU-500 secured contexts .../devicetree/bindings/iommu/qcom,iommu.yaml | 22 +++++-- drivers/iommu/arm/arm-smmu/qcom_iommu.c | 62 ++++++++++++++----- 2 files changed, 64 insertions(+), 20 deletions(-) -- 2.40.1
