diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index ff0054d55590..e2e7c08fd166 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -103,6 +103,8 @@ dtb-$(CONFIG_ARCH_BCM_5301X) += \
 	bcm4708-asus-rt-ac56u.dtb \
 	bcm4708-asus-rt-ac68u.dtb \
 	bcm4708-buffalo-wzr-1750dhp.dtb \
+	bcm4708-buffalo-wzr-1166dhp.dtb \
+	bcm4708-buffalo-wzr-1166dhp2.dtb \
 	bcm4708-linksys-ea6300-v1.dtb \
 	bcm4708-linksys-ea6500-v2.dtb \
 	bcm4708-luxul-xap-1510.dtb \
diff --git a/arch/arm/boot/dts/bcm4708-buffalo-wzr-1166dhp-common.dtsi b/arch/arm/boot/dts/bcm4708-buffalo-wzr-1166dhp-common.dtsi
new file mode 100644
index 000000000000..d659e409a17e
--- /dev/null
+++ b/arch/arm/boot/dts/bcm4708-buffalo-wzr-1166dhp-common.dtsi
@@ -0,0 +1,192 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Broadcom BCM470X / BCM5301X ARM platform code.
+ * DTS for Buffalo WZR-1166DHP and WZR-1166DHP2
+ *
+ * Copyright (C) 2014 Rafał Miłecki <zajec5@gmail.com>
+ * Copyright (C) 2022 SHIMAMOTO Takayoshi <takayoshi.shimamoto.360@gmail.com>
+ */
+
+
+#include "bcm4708.dtsi"
+#include "bcm5301x-nand-cs0-bch8.dtsi"
+#include <dt-bindings/leds/common.h>
+
+/ {
+	spi {
+		compatible = "spi-gpio";
+		num-chipselects = <1>;
+		gpio-sck = <&chipcommon 7 0>;
+		gpio-mosi = <&chipcommon 4 0>;
+		cs-gpios = <&chipcommon 6 0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		hc595: gpio_spi@0 {
+			compatible = "fairchild,74hc595";
+			reg = <0>;
+			registers-number = <1>;
+			spi-max-frequency = <100000>;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		usb {
+			/* label = "bcm53xx:blue:usb"; */
+			function = LED_FUNCTION_USB;
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&hc595 0 GPIO_ACTIVE_HIGH>;
+			trigger-sources = <&ohci_port1>, <&ehci_port1>,
+					  <&xhci_port1>, <&ohci_port2>,
+					  <&ehci_port2>;
+			linux,default-trigger = "usbport";
+		};
+
+		power0 {
+			/* label = "bcm53xx:red:power"; */
+			function = LED_FUNCTION_FAULT;
+			color = <LED_COLOR_ID_RED>;
+			gpios = <&hc595 1 GPIO_ACTIVE_HIGH>;
+		};
+
+		power1 {
+			/* label = "bcm53xx:white:power"; */
+			function = LED_FUNCTION_POWER;
+			color = <LED_COLOR_ID_WHITE>;
+			gpios = <&hc595 2 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "default-on";
+		};
+
+		router0 {
+			/*  label = "bcm53xx:blue:router"; */
+			function = LED_FUNCTION_STATUS;
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&hc595 3 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "default-on";
+		};
+
+		router1 {
+			/* label = "bcm53xx:amber:router"; */
+			function = LED_FUNCTION_STATUS;
+			color = <LED_COLOR_ID_AMBER>;
+			gpios = <&hc595 4 GPIO_ACTIVE_HIGH>;
+		};
+
+		wan {
+			/* label = "bcm53xx:blue:wan"; */
+			function = LED_FUNCTION_WAN;
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&hc595 5 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "default-on";
+		};
+
+		wireless0 {
+			/* label = "bcm53xx:blue:wireless"; */
+			function = LED_FUNCTION_WLAN;
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&hc595 6 GPIO_ACTIVE_HIGH>;
+		};
+
+		wireless1 {
+			/* label = "bcm53xx:amber:wireless"; */
+			function = LED_FUNCTION_WLAN;
+			color = <LED_COLOR_ID_AMBER>;
+			gpios = <&hc595 7 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		restart {
+			label = "Reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&chipcommon 11 GPIO_ACTIVE_LOW>;
+		};
+
+		aoss {
+			label = "AOSS";
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&chipcommon 12 GPIO_ACTIVE_LOW>;
+		};
+
+		/* Commit mode set by switch? */
+		mode {
+			label = "Mode";
+			linux,code = <KEY_SETUP>;
+			gpios = <&chipcommon 13 GPIO_ACTIVE_LOW>;
+		};
+
+		/* Switch: AP mode */
+		sw_ap {
+			label = "AP";
+			linux,code = <BTN_0>;
+			gpios = <&chipcommon 14 GPIO_ACTIVE_LOW>;
+		};
+
+		eject {
+			label = "USB eject";
+			linux,code = <KEY_EJECTCD>;
+			gpios = <&chipcommon 15 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&usb2 {
+	vcc-gpio = <&chipcommon 9 GPIO_ACTIVE_HIGH>;
+};
+
+&usb3 {
+	vcc-gpio = <&chipcommon 10 GPIO_ACTIVE_LOW>;
+};
+
+&spi_nor {
+	status = "okay";
+};
+
+&usb3_phy {
+	status = "okay";
+};
+
+&srab {
+	status = "okay";
+
+	ports {
+		port@0 {
+			reg = <0>;
+			label = "lan1";
+		};
+
+		port@1 {
+			reg = <1>;
+			label = "lan2";
+		};
+
+		port@2 {
+			reg = <2>;
+			label = "lan3";
+		};
+
+		port@3 {
+			reg = <3>;
+			label = "lan4";
+		};
+
+		port@4 {
+			reg = <4>;
+			label = "wan";
+		};
+
+		port@5 {
+			reg = <5>;
+			label = "cpu";
+			ethernet = <&gmac0>;
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/bcm4708-buffalo-wzr-1166dhp.dts b/arch/arm/boot/dts/bcm4708-buffalo-wzr-1166dhp.dts
new file mode 100644
index 000000000000..8e506269fa1a
--- /dev/null
+++ b/arch/arm/boot/dts/bcm4708-buffalo-wzr-1166dhp.dts
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Device Tree Bindigs for Buffalo WZR-1166DHP
+ *
+ * Copyright (C) 2022 SHIMAMOTO Takayoshi <takayoshi.shimamoto.360@gmail.com>
+ */
+
+/dts-v1/;
+
+#include "bcm4708-buffalo-wzr-1166dhp-common.dtsi"
+
+/ {
+	compatible = "buffalo,wzr-1166dhp", "brcm,bcm4708";
+	model = "Buffalo WZR-1166DHP";
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x08000000>,
+		      <0x88000000 0x18000000>;
+	};
+
+};
diff --git a/arch/arm/boot/dts/bcm4708-buffalo-wzr-1166dhp2.dts b/arch/arm/boot/dts/bcm4708-buffalo-wzr-1166dhp2.dts
new file mode 100644
index 000000000000..596129027074
--- /dev/null
+++ b/arch/arm/boot/dts/bcm4708-buffalo-wzr-1166dhp2.dts
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Device Tree Bindigs for Buffalo WZR-1166DHP2
+ *
+ * Copyright (C) 2022 SHIMAMOTO Takayoshi <takayoshi.shimamoto.360@gmail.com>
+ */
+
+/dts-v1/;
+
+#include "bcm4708-buffalo-wzr-1166dhp-common.dtsi"
+
+/ {
+	compatible = "buffalo,wzr-1166dhp2", "brcm,bcm4708";
+	model = "Buffalo WZR-1166DHP2";
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x08000000>,
+		      <0x88000000 0x08000000>;
+	};
+
+};