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diff --git a/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref-gadget1.dts b/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref-gadget1.dts
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+++ b/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref-gadget1.dts
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+//
+// Device Tree Source for UniPhier PXs3 Reference Board (for USB-Device #1)
+//
+// Copyright (C) 2021 Socionext Inc.
+// Author: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
+
+/dts-v1/;
+#include "uniphier-pxs3-ref.dts"
+
+/ {
+ model = "UniPhier PXs3 Reference Board (USB-Device #1)";
+};
+
+/* I2C3 pinctrl is shared with USB*VBUSIN */
+&i2c3 {
+ status = "disabled";
+};
+
+&usb1 {
+ status = "okay";
+ dr_mode = "peripheral";
+ pinctrl-0 = <&pinctrl_usb1_device>;
+ snps,dis_enblslpm_quirk;
+ snps,dis_u2_susphy_quirk;
+ snps,dis_u3_susphy_quirk;
+ snps,usb2-gadget-lpm-disable;
+ phy-names = "usb2-phy", "usb3-phy";
+ phys = <&usb1_hsphy0>, <&usb1_ssphy0>;
+};
+
+&usb1_hsphy0 {
+ /delete-property/ vbus-supply;
+};
+
+&usb1_ssphy0 {
+ /delete-property/ vbus-supply;
+};
+
+/delete-node/ &usb1_hsphy1;