[PATCH v3 7/7] usb: dwc3: qcom: Enable VBUS override at probe for default peripheral role

[Faisal Hassan]

When the controller is in OTG mode with usb-role-switch and
role-switch-default-mode set to peripheral, the role notifier never sees
a transition at probe, so the QSCRATCH VBUS override is not programmed
and the device never gets a session-valid indication.

Enable the VBUS override at probe whenever the initial role is
USB_ROLE_DEVICE.

Validated on SA8255P with an HS host attached: 20 unbind/bind and 20
suspend/resume iterations completed with no failures.

Signed-off-by: Faisal Hassan <faisal.hassan@xxxxxxxxxxxxxxxx>
---
 drivers/usb/dwc3/dwc3-qcom.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index 0896a323bdda..92f1223f7b21 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -953,10 +953,12 @@ static int dwc3_qcom_probe(struct platform_device *pdev)
 		dwc3_qcom_vbus_override_enable(qcom, true);
 	} else {
 		if ((device_property_read_bool(dev, "usb-role-switch")) &&
-		    (usb_get_role_switch_default_mode(dev) == USB_DR_MODE_HOST))
+		    (usb_get_role_switch_default_mode(dev) == USB_DR_MODE_HOST)) {
 			qcom->current_role = USB_ROLE_HOST;
-		else
+		} else {
 			qcom->current_role = USB_ROLE_DEVICE;
+			dwc3_qcom_vbus_override_enable(qcom, true);
+		}
 	}
 
 	qcom->dwc.glue_ops = &dwc3_qcom_glue_ops;
-- 
2.34.1