diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 4213546db40e..2093b9d5cc71 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -117,6 +117,7 @@ dtb-$(CONFIG_ARCH_BCM_5301X) += \
 	bcm4709-netgear-r7000.dtb \
 	bcm4709-netgear-r8000.dtb \
 	bcm4709-tplink-archer-c9-v1.dtb \
+	bcm47094-asus-rt-ac88u.dtb \
 	bcm47094-dlink-dir-885l.dtb \
 	bcm47094-linksys-panamera.dtb \
 	bcm47094-luxul-abr-4500.dtb \
diff --git a/arch/arm/boot/dts/bcm47094-asus-rt-ac88u.dts b/arch/arm/boot/dts/bcm47094-asus-rt-ac88u.dts
new file mode 100644
index 000000000000..448060561cd0
--- /dev/null
+++ b/arch/arm/boot/dts/bcm47094-asus-rt-ac88u.dts
@@ -0,0 +1,200 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (C) 2021 Arınç ÜNAL <arinc.unal@arinc9.com>
+ */
+
+/dts-v1/;
+
+#include "bcm47094.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
+
+/ {
+	compatible = "asus,rt-ac88u", "brcm,bcm47094", "brcm,bcm4708";
+	model = "Asus RT-AC88U";
+
+	chosen {
+		bootargs = "earlycon";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x08000000>,
+		      <0x88000000 0x18000000>;
+	};
+
+	nvram@1c080000 {
+		compatible = "brcm,nvram";
+		reg = <0x1c080000 0x00180000>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		power {
+			label = "white:power";
+			gpios = <&chipcommon 3 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "default-on";
+		};
+
+		wan-red {
+			label = "red:wan";
+			gpios = <&chipcommon 5 GPIO_ACTIVE_HIGH>;
+		};
+
+		lan {
+			label = "white:lan";
+			gpios = <&chipcommon 21 GPIO_ACTIVE_LOW>;
+		};
+
+		usb2 {
+			label = "white:usb2";
+			gpios = <&chipcommon 16 GPIO_ACTIVE_LOW>;
+			trigger-sources = <&ehci_port2>;
+			linux,default-trigger = "usbport";
+		};
+
+		usb3 {
+			label = "white:usb3";
+			gpios = <&chipcommon 17 GPIO_ACTIVE_LOW>;
+			trigger-sources = <&ehci_port1>, <&xhci_port1>;
+			linux,default-trigger = "usbport";
+		};
+
+		wps {
+			label = "white:wps";
+			gpios = <&chipcommon 19 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		wps {
+			label = "WPS";
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&chipcommon 20 GPIO_ACTIVE_LOW>;
+		};
+
+		reset {
+			label = "Reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&chipcommon 11 GPIO_ACTIVE_LOW>;
+		};
+
+		wifi {
+			label = "Wi-Fi";
+			linux,code = <KEY_RFKILL>;
+			gpios = <&chipcommon 18 GPIO_ACTIVE_LOW>;
+		};
+
+		led {
+			label = "Backlight";
+			linux,code = <KEY_BRIGHTNESS_ZERO>;
+			gpios = <&chipcommon 4 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&srab {
+	compatible = "brcm,bcm53012-srab", "brcm,bcm5301x-srab";
+	status = "okay";
+	dsa,member = <0 0>;
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+			label = "lan4";
+		};
+
+		port@1 {
+			reg = <1>;
+			label = "lan3";
+		};
+
+		port@2 {
+			reg = <2>;
+			label = "lan2";
+		};
+
+		port@3 {
+			reg = <3>;
+			label = "lan1";
+		};
+
+		port@4 {
+			reg = <4>;
+			label = "wan";
+		};
+
+		sw0_p5: port@5 {
+			reg = <5>;
+			label = "extsw";
+
+			fixed-link {
+				speed = <1000>;
+				full-duplex;
+			};
+		};
+
+		port@7 {
+			reg = <7>;
+			ethernet = <&gmac1>;
+			label = "cpu";
+
+			fixed-link {
+				speed = <1000>;
+				full-duplex;
+			};
+		};
+
+		port@8 {
+			reg = <8>;
+			ethernet = <&gmac2>;
+			label = "cpu";
+			status = "disabled";
+
+			fixed-link {
+				speed = <1000>;
+				full-duplex;
+			};
+		};
+	};
+};
+
+&usb2 {
+	vcc-gpio = <&chipcommon 9 GPIO_ACTIVE_HIGH>;
+};
+
+&usb3_phy {
+	status = "okay";
+};
+
+&nandcs {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partition@0 {
+			label = "boot";
+			reg = <0x00000000 0x00080000>;
+			read-only;
+		};
+
+		partition@80000 {
+			label = "nvram";
+			reg = <0x00080000 0x00180000>;
+		};
+
+		partition@200000 {
+			label = "firmware";
+			reg = <0x00200000 0x07e00000>;
+			compatible = "brcm,trx";
+		};
+	};
+};