I have made some good progress thanks to Siwei’s advice. I have modified my .dts file and have made a usb controller as well as the sdhci controller available to the VM. However, there still seems to be some issues at start up. Here is what dmesg has to say about the usb controller(s) root@xilinx-zcu102-2019_1:~# dmesg | grep usb [ 1.754678] usbcore: registered new interface driver usbfs [ 1.761934] usbcore: registered new interface driver hub [ 1.768958] usbcore: registered new device driver usb [ 3.827826] usbcore: registered new interface driver asix [ 3.834976] usbcore: registered new interface driver ax88179_178a [ 3.842998] usbcore: registered new interface driver cdc_ether [ 3.850682] usbcore: registered new interface driver net1080 [ 3.858146] usbcore: registered new interface driver cdc_subset [ 3.865948] usbcore: registered new interface driver zaurus [ 3.873301] usbcore: registered new interface driver cdc_ncm [ 3.895799] usbcore: registered new interface driver uas [ 3.902820] usbcore: registered new interface driver usb-storage [ 3.916716] usbcore: registered new interface driver uvcvideo [ 3.991358] usbcore: registered new interface driver bcm203x [ 3.998824] usbcore: registered new interface driver bpa10x [ 4.006182] usbcore: registered new interface driver bfusb [ 4.013424] usbcore: registered new interface driver btusb [ 4.028142] usbcore: registered new interface driver ath3k [ 4.201363] usbcore: registered new interface driver usbhid [ 4.208699] usbhid: USB HID core driver [ 4.224831] usbcore: registered new interface driver snd-usb-audio [ 5.181742] dwc3-of-simple ff9e0000.usb1: failed to add to PM domain domain3: -13 [ 5.191629] dwc3-of-simple: probe of ff9e0000.usb1 failed with error -13 Any clue? Regarding the SD card, it is partitioned with a boot partition where uboot and the .elf file live and the remainder is the free space I hope to use as the filesystem. Here is what dmesg has to say about the sdhc interface. root@xilinx-zcu102-2019_1:~# dmesg | grep sdhc [ 4.049894] sdhci: Secure Digital Host Controller Interface driver [ 4.058026] sdhci: Copyright(c) Pierre Ossman [ 4.063768] sdhci-pltfm: SDHCI platform and OF driver helper [ 5.209925] sdhci-arasan ff160000.mmc: failed to add to PM domain domain4: -13 [ 5.219468] sdhci-arasan: probe of ff160000.mmc failed with error -13 [ 5.351710] mmc0: sdhci: ============ SDHCI REGISTER DUMP =========== [ 5.360229] mmc0: sdhci: Sys addr: 0x00000000 | Version: 0x00000000 [ 5.368759] mmc0: sdhci: Blk size: 0x00000000 | Blk cnt: 0x00000000 [ 5.377280] mmc0: sdhci: Argument: 0x00000000 | Trn mode: 0x00000000 [ 290.055387] random: fast init done [ 5.385810] mmc0: sdhci: Present: 0x00000000 | Host ctl: 0x00000000 [ 5.394331] mmc0: sdhci: Power: 0x00000000 | Blk gap: 0x00000000 [ 5.402860] mmc0: sdhci: Wake-up: 0x00000000 | Clock: 0x00000000 [ 5.411381] mmc0: sdhci: Timeout: 0x00000000 | Int stat: 0x00000000 [ 5.419902] mmc0: sdhci: Int enab: 0x00000000 | Sig enab: 0x00000000 [ 5.428441] mmc0: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000 [ 5.436962] mmc0: sdhci: Caps: 0x00000000 | Caps_1: 0x00000000 [ 5.445491] mmc0: sdhci: Cmd: 0x00000000 | Max curr: 0x00000000 [ 5.454021] mmc0: sdhci: Resp[0]: 0x00000000 | Resp[1]: 0x00000000 [ 5.462551] mmc0: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000 [ 5.471089] mmc0: sdhci: Host ctl2: 0x00000000 [ 5.477023] mmc0: sdhci: ============================================ Seems to be getting the same -13 error when setting up it’s domain. So… what do I need to do to make these devices accessible from the linux command line?