On 11/04/16 15:18, Felipe Balbi wrote: > > Hi, > > Roger Quadros <rog...@ti.com> writes: >> Don't make any decisions regarding VBUS session based on ID >> status. That is best left to the OTG core. > > what about builds who don't want OTG and/or dual-role ? > >> Pass ID and VBUS events independent of each other so that OTG >> core knows exactly what to do. >> >> This makes dual-role with extcon work with OTG irq on OMAP platforms. >> >> Signed-off-by: Roger Quadros <rog...@ti.com> >> --- >> drivers/usb/dwc3/dwc3-omap.c | 15 ++++++--------- >> 1 file changed, 6 insertions(+), 9 deletions(-) >> >> diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c >> index 51ca098..c9b918d 100644 >> --- a/drivers/usb/dwc3/dwc3-omap.c >> +++ b/drivers/usb/dwc3/dwc3-omap.c >> @@ -233,19 +233,14 @@ static void dwc3_omap_set_mailbox(struct dwc3_omap >> *omap, >> } >> >> val = dwc3_omap_read_utmi_ctrl(omap); >> - val &= ~(USBOTGSS_UTMI_OTG_CTRL_IDDIG >> - | USBOTGSS_UTMI_OTG_CTRL_VBUSVALID >> - | USBOTGSS_UTMI_OTG_CTRL_SESSEND); >> - val |= USBOTGSS_UTMI_OTG_CTRL_SESSVALID >> - | USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT; >> + val &= ~USBOTGSS_UTMI_OTG_CTRL_IDDIG; > > this creates the possibility of having a USB peripheral with VBUS_VALID, > right
Sorry, I didn't get what you meant. > >> dwc3_omap_write_utmi_ctrl(omap, val); >> break; >> >> case OMAP_DWC3_VBUS_VALID: >> val = dwc3_omap_read_utmi_ctrl(omap); >> val &= ~USBOTGSS_UTMI_OTG_CTRL_SESSEND; >> - val |= USBOTGSS_UTMI_OTG_CTRL_IDDIG >> - | USBOTGSS_UTMI_OTG_CTRL_VBUSVALID >> + val |= USBOTGSS_UTMI_OTG_CTRL_VBUSVALID >> | USBOTGSS_UTMI_OTG_CTRL_SESSVALID >> | USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT; > > I remember discussing this with TI's IP owner back in OMAP5 days. This > code was a result of talking to that guy and was, back then, tested by > Silicon Validation team. I would strongly advise that before changing > these bits you check with whoever's currently handling this IP inside TI > to make sure your changes are still within the expectations of the > wrapper block. > OK, I wasn't aware about this. I will check with the Silicon team. cheers, -roger -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
