Hi,
I have a ARM SoC which has a dwc3 drd controller, to validate if there
is a limit of max device connections, I connected multiple hubs, then
keyboards and mice.
When plugged in the 32th device, xHCI shows the following message and
the numeration failed.
Not enough host controller resources for new device state.
can't set config #1, error -12
Then plugging in more keyboards or mice, this message always happened.
But then MSC devices were still enumerated correctly at this point. So
it seems the issue is only related to interrupt transfers?
I am trying to understand if this is hardware or xHCI driver
limitation. Anyone has any pointers how to debug this issue?
Thanks,
-Bin.
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