SOM-7569 User Manual
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3.4.12
USB Configuration
Figure 3.23 USB Configuration
Legacy USB Support
Enables Legacy USB support. Auto option disables legacy support if no USB
devices are connected. Disable option will keep USB devices available only for
EFI applications.
XHCI Hand-off
This is a workaround for OSes without XHCI ownership change should be
claimed by XHCI driver.
USB Mass Storage Driver Support
Enable/Disable USB Mass Storage Driver Support.
USB transfer time-out
The time-out value for Control, Bulk, and Interrupt transfers.
Device reset time-out
USB mass storage device Start Unit command time-out.
Device power-up delay
Maximum time the device will take before it properly reports itself to the Host
Controller.
‘Auto’ uses default value: for a Root port it is 100ms, for a Hub port the delay is
taken from Hub descriptor.