Initialize desc_before_addr, otherwise the USB core won't send the first 64B Get Device Descriptor request in common/usb.c function usb_setup_descriptor() . There are some USB devices which expect this sequence and otherwise can misbehave.
Signed-off-by: Marek Vasut marex@denx.de Cc: Dinh Nguyen dinguyen@opensource.altera.com Cc: Tom Rini trini@konsulko.com --- drivers/usb/host/dwc2.c | 3 +++ 1 file changed, 3 insertions(+) --- NOTE: I checked this with TotalPhase Beagle USB480 and it does what it is supposed to do now. It would be wonderful to get this into rc3.
diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c index b2f4bc6..559c43f 100644 --- a/drivers/usb/host/dwc2.c +++ b/drivers/usb/host/dwc2.c @@ -1182,6 +1182,9 @@ static int dwc2_usb_ofdata_to_platdata(struct udevice *dev) static int dwc2_usb_probe(struct udevice *dev) { struct dwc2_priv *priv = dev_get_priv(dev); + struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev); + + bus_priv->desc_before_addr = true;
return dwc2_init_common(priv); }