[PATCH v2 2/2] usb: dwc3-generic: respect role-switch-default-mode

[Casey Connolly]

Respect the default mode configured in DT if it is set and dr_mode is
OTG. This allows the board to prefer host mode even on a DRD capable
controller.

Reviewed-by: Mattijs Korpershoek <mkorpershoek at kernel.org>
Signed-off-by: Casey Connolly <casey.connolly at linaro.org>
---
 drivers/usb/dwc3/dwc3-generic.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c
index 22b9ef0b24e3..8893a33b9f6a 100644
--- a/drivers/usb/dwc3/dwc3-generic.c
+++ b/drivers/usb/dwc3/dwc3-generic.c
@@ -533,8 +533,13 @@ static int dwc3_glue_bind_common(struct udevice *parent, ofnode node)
 	dr_mode = usb_get_dr_mode(dev_ofnode(parent));
 	if (!dr_mode)
 		dr_mode = usb_get_dr_mode(node);
 
+	/* check default role for DRD controllers */
+	if ((dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_UNKNOWN) &&
+	    ofnode_read_bool(node, "usb-role-switch"))
+		dr_mode = usb_get_role_switch_default_mode(node);
+
 	/* usb mode must fallback to peripheral if not known */
 	if (dr_mode == USB_DR_MODE_UNKNOWN)
 		dr_mode = USB_DR_MODE_OTG;
 

-- 
2.51.0