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3.1.2.18
USB Configuration
Feature
Legacy USB Support
XHCI Hand-off
USB Mass Storage Driver
Support
USB transfer time-out
Device reset time-out
Device power-up delay
SOM-5871 User Manual
Options
Description
Enables legacy USB support. AUTO option
Enabled
disables legacy support if no USB devices are
Disabled
connected. DISABLE option will keep USB
Auto
devices available only for EFI applications.
This is a workaround for OS without XHCI
Enabled
hand-off support. The XHCI ownership change
Disabled
should be claimed by XHCI driver.
Enabled
Enable/Disable USB mass storage driver sup-
Disabled
port.
1 sec
5 sec
The time-out value for control, bulk, and inter-
10 sec
rupt transfers.
20 sec
10 sec
20 sec
USB mass storage device Start Unit command
30 sec
time-out.
40 sec
Maximum time the device will take before it
properly reports itself to the host controller.
Auto
'Auto' uses default value: for a Root port it is
Manual
100 ms, for a Hub port the delay is taken from
Hub descriptor.
62
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