Hi John, Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx> writes: > Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx> writes: >> Synopsys Databook says we should move link to U0 >> before issuing a Start Transfer command. We could >> require the gadget driver to call >> usb_gadget_wakeup() however I feel that changing all >> gagdget drivers to keep track of Link State and >> conditionally call usb_gadget_wakeup() would be far >> too much work. For now we will handle this at the >> UDC level, but at some point composite.c should be >> one handling this. >> >> Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx> > > I have been looking at this for a while but I have two question which I > can't seem to answer using Synopsys databook (I have here 2.60a). > > i) When is it legal to start Wakeup request ? > > ii) What is the proper way to start wakeup request ? > > IIRC current code was very much extracted from a BSD reference code > which was sent to me (while back at TI) years ago and now I have been > wondering if current code is actually correct or not. I can't find > answers in the databook. Everytime I look for 'wakeup' on the databook > it's always along the lines of "SW can issue wakeup request" but there's > never a "here's how you start wakeup request and here's when is it legal > to do so" section. > > Would you be able to request Synopsys to clarify this in the Databook ? > (I know I'm using an older version of the databook, but I really don't > have anything else right now, sorry). A gentle ping about this question ;-) -- balbi
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