Hi, On 4/13/2020 6:31 PM, Marek Vasut wrote: > On STM32MP1 without the STUSB1600 USB-C chip (i.e. with plain USB-OTG Could you please provide GSNPSID, GHWCFG1-4 register values for STM32MP1. > micro-B plug with ID and VBUS detection), the USB OTG port only works > if a micro-B device (e.g. a USB stick) is plugged in first. Once this > is done, both micro-B device and host (e.g. a PC via a USB A-to-microB > cable) are correctly detected and recognized. If a USB host is plugged > in first (e.g. a PC), then the PC does not detect the STM32MP1 at all. > > By running the core connect code in dwc2_hcd_init(), both device and > host are detected and the USB works as expected. However, it is not > clear whether this is the correct solution. > > Signed-off-by: Marek Vasut <marex@xxxxxxx> > Cc: Amelie Delaunay <amelie.delaunay@xxxxxx> > Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > Cc: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> > Cc: Minas Harutyunyan <hminas@xxxxxxxxxxxx> > To: linux-usb@xxxxxxxxxxxxxxx > --- > drivers/usb/dwc2/hcd.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c > index b90f858af960..ead605efeb24 100644 > --- a/drivers/usb/dwc2/hcd.c > +++ b/drivers/usb/dwc2/hcd.c > @@ -5237,6 +5237,11 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg) > > dwc2_enable_global_interrupts(hsotg); > > + dwc2_hsotg_core_init_disconnected(hsotg, false); > + /* Enable ACG feature in device mode,if supported */ > + dwc2_enable_acg(hsotg); > + dwc2_hsotg_core_connect(hsotg); > + > return 0; > > error4: > Thanks, Minas
