> >
> > I suspect it is not related to USB, would you please disable USB node at DTS to
> measure again?
>
> With USB disabled (&usbotg1 and &usbotg2), VBUS is available when I connect to
> the host and properly discharged when I disconnect.
> I also tried the OTG's host mode yesterday. When I attach a Micro-B plug to A-
> receptable adapter (and no actual gadget), the GPIO-controlled regulator is turned
> on and drives VBUS. When I detach it and the board switches back to gadget, the
> regulator is turned off and VBUS is properly drained.
>
Would you please try disabling charger detection to see if it anything changes?
Do you have any components at VBUS?
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 6a5ee8e6da10..70f07a81daa4 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1524,9 +1524,11 @@ static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active)
gadget_ready = 1;
spin_unlock_irqrestore(&ci->lock, flags);
+ /*
if (ci->usb_phy)
usb_phy_set_charger_state(ci->usb_phy, is_active ?
USB_CHARGER_PRESENT : USB_CHARGER_ABSENT);
+ */
if (gadget_ready) {
if (is_active) {
Peter
