Re: PXA27x UDC Power

Justin Clacherty <[email protected]>
Newsgroups gmane.linux.usb.devel
Message-ID <[email protected]>
Justin Clacherty wrote:
> Yes, I was aware of this.  I was intending to run at 100 mA and then 
> bump it up to 500 mA when vbus_draw is called.
>   

I've implemented this and it seems to work nicely (turning on the 
charger anyway).  Now how do I go about reducing the draw back to 100 mA 
when I'm disconnected so that I'm not still in 500 mA mode when USB is 
plugged in again?

I was initially expecting that vbus_draw would be called with a mA value 
of 100 or less when disconnecting but this doesn't seem to be the case.  
I can't use vbus_session as we don't monitor vbus on our product.  Is 
there some other function that's likely to be called on disconnect that 
can be used to trigger a reduction in current draw?

Justin.


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