Hi Arnd, On Tue, Oct 17, 2017 at 11:10 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > On Tue, Oct 17, 2017 at 11:00 PM, Martin Blumenstingl > <martin.blumenstingl@xxxxxxxxxxxxxx> wrote: >> On Fri, Oct 13, 2017 at 9:37 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote: >>> On Thu, Oct 12, 2017 at 10:56 PM, Martin Blumenstingl >>> <martin.blumenstingl@xxxxxxxxxxxxxx> wrote: >>> >>> It's possible that this has never worked on XHCI because of the lack >>> of the root-hub in DT. Either way, we should ensure that it does work >>> now and you didn't break it, so please at least test it with your patches. >>> >>> The patch below should be sufficient to see if any device has an >>> of_node pointer when you add it to your DT: >> I slightly modified your patch (see the attached version) and tried it: >> # lsusb -t >> /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/0p, 5000M >> /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/2p, 480M >> |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M >> |__ Port 3: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 480M >> >> the roothub (bus 1 port 1 dev 1) and a soldered down hub (child of >> that root-hub, port 1 dev 2) have an entry in the .dts >> >> # dmesg | grep usb >> [ 0.174097] usbcore: registered new interface driver usbfs >> [ 0.174147] usbcore: registered new interface driver hub >> [ 0.174217] usbcore: registered new device driver usb >> [ 1.354280] usb usb2: We don't know the algorithms for LPM for this >> host, disabling LPM. >> [ 1.373297] usbcore: registered new interface driver usb-storage >> [ 1.512840] usbcore: registered new interface driver dvb_usb_rtl28xxu >> [ 1.550506] usb 1-1: of_node /soc/usb@c9000000/hub@1 parent /soc/usb@c9000000 >> ^ this is the soldered down hub >> [ 1.552579] usbcore: registered new interface driver bcm203x >> [ 1.712033] usbcore: registered new interface driver usbhid >> [ 1.716994] usbhid: USB HID core driver >> [ 1.738827] usb 1-1: new high-speed USB device number 2 using xhci-hcd >> [ 2.142392] usb 1-1.3: of_node <no-node> parent /soc/usb@c9000000/hub@1 >> ^ this is the thumb drive plugged into the hub (not specified in the .dts) >> [ 2.220399] usb 1-1.3: new high-speed USB device number 3 using xhci-hcd >> [ 2.326144] usb-storage 1-1.3:1.0: USB Mass Storage device detected >> [ 2.328352] scsi host0: usb-storage 1-1.3:1.0 >> >> so for me it seems to be working fine > > Ok, very good! > >> is there anything else you want me to test? > > What about the same dtb when run on a kernel without your > patch series? Does that work as well, or are your patches > required to make it work? this is the only device I have which uses devicetree and a xHCI controller. I can test it with a dwc2 based device though if you want Regards, Martin -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
