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SubjectRe: [PATCH 3/5] iommu/tegra-smmu: Use iommu_fwspec in .probe_/.attach_device()
>> As I mentioned in another reply, I think tegra_smmu_find() should be all
>> you need in this case.
> This function is used by .probe_device() where its dev pointer is
> an SMMU client. IIUC, tegra_smmu_find() needs np pointer of "mc".
> For a PCI device that doesn't have a DT node with iommus property,
> not sure how we can use tegra_smmu_find().

Perhaps you could get np from struct pci_dev.bus?

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