diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c
index 4576390ec7c..acbf7acb191 100644
--- a/drivers/usb/dwc3/dwc3-generic.c
+++ b/drivers/usb/dwc3/dwc3-generic.c
@@ -542,7 +542,7 @@ int dwc3_glue_probe(struct udevice *dev)
 		phy.dev = NULL;
 	}
 
-	glue->regs = dev_read_addr(dev);
+	glue->regs = dev_read_addr_size_index(dev, 0, &glue->size);
 
 	ret = dwc3_glue_clk_init(dev, glue);
 	if (ret)
diff --git a/drivers/usb/dwc3/dwc3-generic.h b/drivers/usb/dwc3/dwc3-generic.h
index 824f678841a..40902c8923f 100644
--- a/drivers/usb/dwc3/dwc3-generic.h
+++ b/drivers/usb/dwc3/dwc3-generic.h
@@ -17,6 +17,7 @@ struct dwc3_glue_data {
 	struct clk_bulk		clks;
 	struct reset_ctl_bulk	resets;
 	fdt_addr_t regs;
+	fdt_size_t size;
 };
 
 struct dwc3_glue_ops {