On Tue, Sep 29, 2020 at 07:06:37AM +0300, Dmitry Osipenko wrote: > ... > >> 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? Possibly yes...but I was hoping the solution would be potentially reused by other devices that don't have DT nodes, USB for example, though I haven't tested with current version.
