diff options
| -rw-r--r-- | drivers/usb/musb/musb_gadget.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index c410a7ff150b..d4aa779339f1 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -2119,7 +2119,15 @@ __acquires(musb->lock) /* Normal reset, as B-Device; * or else after HNP, as A-Device */ - if (devctl & MUSB_DEVCTL_BDEVICE) { + if (!musb->g.is_otg) { + /* USB device controllers that are not OTG compatible + * may not have DEVCTL register in silicon. + * In that case, do not rely on devctl for setting + * peripheral mode. + */ + musb->xceiv->state = OTG_STATE_B_PERIPHERAL; + musb->g.is_a_peripheral = 0; + } else if (devctl & MUSB_DEVCTL_BDEVICE) { musb->xceiv->state = OTG_STATE_B_PERIPHERAL; musb->g.is_a_peripheral = 0; } else { |