diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 2400b7f87f978739e45db6d4a790d82360620903..075b419a3076a90f0ce05f2c09501d3f6435a5b7 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -404,15 +404,13 @@ static int ci_hdrc_probe(struct platform_device *pdev)
 	void __iomem	*base;
 	int		ret;
 	enum usb_dr_mode dr_mode;
+	struct device_node *of_node = dev->of_node ?: dev->parent->of_node;
 
 	if (!dev->platform_data) {
 		dev_err(dev, "platform data missing\n");
 		return -ENODEV;
 	}
 
-	if (!dev->of_node && dev->parent)
-		dev->of_node = dev->parent->of_node;
-
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(base))
@@ -453,12 +451,12 @@ static int ci_hdrc_probe(struct platform_device *pdev)
 	}
 
 	if (!ci->platdata->phy_mode)
-		ci->platdata->phy_mode = of_usb_get_phy_mode(dev->of_node);
+		ci->platdata->phy_mode = of_usb_get_phy_mode(of_node);
 
 	hw_phymode_configure(ci);
 
 	if (!ci->platdata->dr_mode)
-		ci->platdata->dr_mode = of_usb_get_dr_mode(dev->of_node);
+		ci->platdata->dr_mode = of_usb_get_dr_mode(of_node);
 
 	if (ci->platdata->dr_mode == USB_DR_MODE_UNKNOWN)
 		ci->platdata->dr_mode = USB_DR_MODE_OTG;