I haven't checked the Bill of Materials, but if U22 (the TUSB322IRWBR USB-C control chip) is populated along with R533 and R534, then the board is out of spec for USB-C on the CC lines.
On Thursday, November 7, 2019 at 7:15:01 AM UTC-8, nick.g...@gmail.com wrote: > > > Hello, > > I have noticed that my BBAI Rev A1, when connected to a PC, will enumerate > as a high-speed USB device with the USB-C connector in one orientation, and > a Super-Speed device with the connector oriented in the other direction > (simply flipped upside down). I have reproduced this across several > software revisions including the production emmc image: > http://debian.beagleboard.org/images/am57xx-eMMC-flasher-debian-9.9-lxqt-armhf-2019-08-03-4gb.img.xz > > I checked the > https://github.com/beagleboard/beaglebone-ai/wiki/System-Reference-Manual#board-changes > > page and did not see any changes related to USB in any of the newer > revisions. I was wondering if there are others who also have experienced > this issue, or if it could be isolated to my specific board. I have > reproduced the issue with several different USB-C cables including a USB > A->USB-C and USB-C -> USB-C cable. > > First orientation: > >> Nov 6 13:54:36 lnx-nickg kernel: [606956.216954] usb 1-5: new high-speed >> USB device number 48 using xhci_hcd >> Nov 6 13:54:36 lnx-nickg kernel: [606956.346011] usb 1-5: New USB device >> found, idVendor=1d6b, idProduct=0104 >> Nov 6 13:54:36 lnx-nickg kernel: [606956.346013] usb 1-5: New USB device >> strings: Mfr=1, Product=2, SerialNumber=3 >> Nov 6 13:54:36 lnx-nickg kernel: [606956.346015] usb 1-5: Product: >> BeagleBone >> Nov 6 13:54:36 lnx-nickg kernel: [606956.346017] usb 1-5: Manufacturer: >> BeagleBoard.org >> Nov 6 13:54:36 lnx-nickg kernel: [606956.346018] usb 1-5: SerialNumber: >> 1234BBBK5678 > > Nov 6 13:54:36 lnx-nickg kernel: [606956.347593] usb-storage 1-5:1.2: USB >> Mass Storage device detected > > ... >> > > Second orientation: > >> Nov 6 14:04:53 lnx-nickg kernel: [607573.545068] usb 2-5: new SuperSpeed >> USB device number 32 using xhci_hcd >> Nov 6 14:04:53 lnx-nickg kernel: [607573.562236] usb 2-5: New USB device >> found, idVendor=1d6b, idProduct=0104 >> Nov 6 14:04:53 lnx-nickg kernel: [607573.562246] usb 2-5: New USB device >> strings: Mfr=1, Product=2, SerialNumber=3 >> Nov 6 14:04:53 lnx-nickg kernel: [607573.562252] usb 2-5: Product: >> BeagleBone >> Nov 6 14:04:53 lnx-nickg kernel: [607573.562258] usb 2-5: Manufacturer: >> BeagleBoard.org >> Nov 6 14:04:53 lnx-nickg kernel: [607573.562263] usb 2-5: SerialNumber: >> 1234BBBK5678 >> Nov 6 14:04:53 lnx-nickg kernel: [607573.567404] usb-storage 2-5:1.2: >> USB Mass Storage device detected >> > ... >> > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/08088773-4022-4342-86f7-ee25a3537101%40googlegroups.com.
