usb: dwc2: power on/off phy for peripheral mode in dual-role mode

The PHY power is handled for peripheral mode but only when the device is
forced into this peripheral mode. It is missing when the device is
operating in peripheral mode when dual-role mode is enabled, so let's
update the condition to match this scenario.

Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Link: https://lore.kernel.org/r/20221206-dwc2-gadget-dual-role-v1-2-36515e1092cd@theobroma-systems.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/dwc2/gadget.c

@@ -4549,7 +4549,8 @@ static int dwc2_hsotg_udc_start(struct usb_gadget *gadget,
 	hsotg->gadget.dev.of_node = hsotg->dev->of_node;
 	hsotg->gadget.speed = USB_SPEED_UNKNOWN;
 
-	if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) {
+	if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL ||
+	    (hsotg->dr_mode == USB_DR_MODE_OTG && dwc2_is_device_mode(hsotg))) {
 		ret = dwc2_lowlevel_hw_enable(hsotg);
 		if (ret)
 			goto err;
@@ -4611,7 +4612,8 @@ static int dwc2_hsotg_udc_stop(struct usb_gadget *gadget)
 	if (!IS_ERR_OR_NULL(hsotg->uphy))
 		otg_set_peripheral(hsotg->uphy->otg, NULL);
 
-	if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
+	if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL ||
+	    (hsotg->dr_mode == USB_DR_MODE_OTG && dwc2_is_device_mode(hsotg)))
 		dwc2_lowlevel_hw_disable(hsotg);
 
 	return 0;

drivers/usb/dwc2/platform.c

@@ -576,7 +576,8 @@ static int dwc2_driver_probe(struct platform_device *dev)
 	dwc2_debugfs_init(hsotg);
 
 	/* Gadget code manages lowlevel hw on its own */
-	if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
+	if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL ||
+	    (hsotg->dr_mode == USB_DR_MODE_OTG && dwc2_is_device_mode(hsotg)))
 		dwc2_lowlevel_hw_disable(hsotg);
 
 #if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \