[usb] Question about of ohci register

["M Dennis" <mdennis97@hotmail.com>]

hi,all

Host Controller use the HcPeriodCurrentED register to tell the HCD which ED 
is current being processed.(Refer to Page 117 of OHCI Spec.)I have two 
question about this register:
1,How and when will this register be initialized?
2,Is there any meaning for Host Controller to read this register?

Regards

Dennis





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