On Friday 02 March 2018 17:47:52 Merlijn Wajer wrote:
> >> I would expect it to state "b_idle" instead of "(null)".
> > 
> > Actually, I'd like to see (null) whenever a gadget driver is not loaded,
> > which indicates a gadget is not bound to the udc.
> Hm... Sounds fine to me. I'm using this mode in combination with the usb
> phy (vbus property) to detect if the phone is detect to a 'dumb' charger
> of a PC, but I can just always have a gadget loaded -- same as before,
> really.

For detection if wallcharger or pc usb charger is connected, there is
isp1704_charger driver. It uses some standard ULPI interface. It reports
current_max and type (DCP - dedicated, CDP or just usb).

Pali Rohár

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