Hi John, 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). -- balbi
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