It seems that if the UDC is already enabled and is connected already (for instance if I was previously running linux and I jump into a new kernel), when I disconnect and reconnect the USB cable, nothing happens (my g_char driver isn't notified.)
Thoughts?
See the PXA UDC docs, figure 12.5 ... you need a GPIOx-controlled pullup on UDC+ to disconnect under software control (forcing re-enumeration).
And a GPIOn-triggered IRQ to see get connect/disconnect indications.
Hardware _should_ support both of those mechanisms. But from your description, I'm not sure which one you're not seeing. You should have compile time #warnings for each mechanism that doesn't seem to exist on your hardware.
- Dave
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