diff --git a/src/arm/broadcom/bcm4708-asus-rt-ac56u.dts b/src/arm/broadcom/bcm4708-asus-rt-ac56u.dts
new file mode 100644
index 0000000..c80ac16
--- /dev/null
+++ b/src/arm/broadcom/bcm4708-asus-rt-ac56u.dts
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Broadcom BCM470X / BCM5301X ARM platform code.
+ * DTS for Asus RT-AC56U
+ *
+ * Copyright (C) 2015 Rafał Miłecki <zajec5@gmail.com>
+ */
+
+/dts-v1/;
+
+#include "bcm4708.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
+
+/ {
+	compatible = "asus,rt-ac56u", "brcm,bcm4708";
+	model = "Asus RT-AC56U (BCM4708)";
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x08000000>,
+		      <0x88000000 0x08000000>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-usb3 {
+			label = "bcm53xx:blue:usb3";
+			gpios = <&chipcommon 0 GPIO_ACTIVE_LOW>;
+		};
+
+		led-wan {
+			label = "bcm53xx:blue:wan";
+			gpios = <&chipcommon 1 GPIO_ACTIVE_LOW>;
+		};
+
+		led-lan {
+			label = "bcm53xx:blue:lan";
+			gpios = <&chipcommon 2 GPIO_ACTIVE_LOW>;
+		};
+
+		led-power {
+			label = "bcm53xx:blue:power";
+			gpios = <&chipcommon 3 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "default-on";
+		};
+
+		led-all {
+			label = "bcm53xx:blue:all";
+			gpios = <&chipcommon 4 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "default-on";
+		};
+
+		led-2ghz {
+			label = "bcm53xx:blue:2ghz";
+			gpios = <&chipcommon 6 GPIO_ACTIVE_LOW>;
+		};
+
+		led-usb2 {
+			label = "bcm53xx:blue:usb2";
+			gpios = <&chipcommon 14 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		button-rfkill {
+			label = "WiFi";
+			linux,code = <KEY_RFKILL>;
+			gpios = <&chipcommon 7 GPIO_ACTIVE_LOW>;
+		};
+
+		button-restart {
+			label = "Reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&chipcommon 11 GPIO_ACTIVE_LOW>;
+		};
+
+		button-wps {
+			label = "WPS";
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&chipcommon 15 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&usb3_phy {
+	status = "okay";
+};