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> > iommus = <&smmu 0x11 0x7f80>; > > }; > > + > > +&usbotg3_cdns3 { > > + iommus = <&smmu 0x4 0x7f80>; > > +}; > > > > Hello Frank, > > this patch, now in mainline as 73c3b40e536d, breaks USB 3.0 on Apalis iMX8QM > (both on Ixora and on the Apalis Evaluation Board). Right after xHCI starts: > > xhci-hcd xhci-hcd.1.auto: Host supports USB 3.0 SuperSpeed > xhci-hcd xhci-hcd.1.auto: WARNING: Host System Error > ... > xhci-hcd xhci-hcd.1.auto: xHCI host controller not responding, assume dead > xhci-hcd xhci-hcd.1.auto: HC died; cleaning up > > SuperSpeed devices no longer enumerate, and no SMMU fault is reported. > Reverting only this commit on top of current master fixes it. The other commit > seems fine. Does it only impact superspeed? High speed work? Frank > > Adding the same property to the parent as well, like the NXP downstream tree > does, also fixes it: > > &usbotg3 { > iommus = <&smmu 0x4 0x7f80>; > }; > > With that, SuperSpeed devices enumerate again. > > Could you please take care of a fix? Otherwise I think we should revert this > patch. > > #regzbot introduced: 73c3b40e536d > > Thanks, > Emanuele