Using Xavier NX Dev Kit's Azurewave AW-CB375NF M.2 Module on Jetson Nano

Hi,
According to your log, looks like not a driver issue but some smmu problem.

Could you remove below lines in tegra210-porg-pcie.dts?

           /delete-property/ iommus;
           /delete-property/ iommu-map;
           /delete-property/ iommu-map-mask;