1.2.1. Limitations with USB Functionality
Description
The current USB 2.0 OTG controller model that exists in the Arria 10 SoC Virtual Platform has the following limitations:
- USB 2.0 OTG Controllers do not support all USB storage devices.
- The New Technology File System (NTFS) partition is read-only.
- The Arria 10 SoC Virtual Platform enters an exception when unmounting the EXT3 partition from the USB controller.
- USB Hub is not supported.
- The USB 2.0 OTG controllers cannot receive events from USB human interface devices (HID).
Workaround
The workarounds available are as follows:
| Issue | Workaround |
|---|---|
| USB 2.0 OTG Controllers do not support all USB storage devices. | The following USB storage devices are supported with the corresponding memory limitations:
|
| The New Technology File System (NTFS) partition is read-only. | Use the FAT32 or EXT3 file systems for read/write operations. |
| The Arria 10 SoC Virtual Platform enters an exception when unmounting the EXT3 partition from the USB controller. | The virtual platform must be restarted after unmounting the EXT3 partition. |
| USB Hub is not supported. | No workaround. |
| The USB 2.0 OTG controllers cannot receive events from USB human interface devices (HID). | No workaround. |