--- /dev/null
+++ b/configs/mt7622_linksys_e8450_defconfig
@@ -0,0 +1,111 @@
+CONFIG_ARM=y
+CONFIG_SYS_HAS_NONCACHED_MEMORY=y
+CONFIG_POSITION_INDEPENDENT=y
+CONFIG_ARCH_MEDIATEK=y
+CONFIG_TEXT_BASE=0x41e00000
+CONFIG_SYS_MALLOC_F_LEN=0x4000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_DEFAULT_DEVICE_TREE="mt7622-linksys-e8450-ubi"
+CONFIG_SYS_LOAD_ADDR=0x40080000
+CONFIG_PRE_CON_BUF_ADDR=0x4007EF00
+CONFIG_DEBUG_UART_BASE=0x11002000
+CONFIG_DEBUG_UART_CLOCK=25000000
+CONFIG_PCI=y
+CONFIG_DEBUG_UART=y
+CONFIG_FIT=y
+CONFIG_BOOTDELAY=30
+CONFIG_AUTOBOOT_KEYED=y
+CONFIG_AUTOBOOT_MENU_SHOW=y
+CONFIG_DEFAULT_FDT_FILE="mt7622-linksys-e8450"
+CONFIG_LOGLEVEL=7
+CONFIG_PRE_CONSOLE_BUFFER=y
+CONFIG_LOG=y
+CONFIG_BOARD_LATE_INIT=y
+CONFIG_HUSH_PARSER=y
+CONFIG_SYS_PROMPT="MT7622> "
+CONFIG_CMD_LICENSE=y
+# CONFIG_CMD_BOOTEFI_BOOTMGR is not set
+CONFIG_CMD_BOOTMENU=y
+CONFIG_CMD_ASKENV=y
+CONFIG_CMD_ERASEENV=y
+CONFIG_CMD_ENV_FLAGS=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_MTD=y
+CONFIG_CMD_PART=y
+CONFIG_CMD_PCI=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_TFTPSRV=y
+CONFIG_CMD_RARP=y
+CONFIG_CMD_CDP=y
+CONFIG_CMD_SNTP=y
+CONFIG_CMD_LINK_LOCAL=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_DNS=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_PXE=y
+CONFIG_CMD_PSTORE=y
+CONFIG_CMD_PSTORE_MEM_ADDR=0x42ff0000
+CONFIG_CMD_UUID=y
+CONFIG_CMD_HASH=y
+CONFIG_CMD_SMC=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_CMD_FS_UUID=y
+CONFIG_CMD_MTDPARTS=y
+CONFIG_CMD_UBI=y
+CONFIG_CMD_UBI_RENAME=y
+CONFIG_ENV_IS_IN_UBI=y
+CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
+CONFIG_ENV_UBI_PART="ubi"
+CONFIG_ENV_UBI_VOLUME="ubootenv"
+CONFIG_ENV_UBI_VOLUME_REDUND="ubootenv2"
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_USE_DEFAULT_ENV_FILE=y
+CONFIG_DEFAULT_ENV_FILE="defenvs/linksys_e8450_env"
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+CONFIG_VERSION_VARIABLE=y
+CONFIG_BOOTP_SEND_HOSTNAME=y
+CONFIG_NETCONSOLE=y
+CONFIG_USE_IPADDR=y
+CONFIG_IPADDR="192.168.1.1"
+CONFIG_USE_SERVERIP=y
+CONFIG_SERVERIP="192.168.1.254"
+CONFIG_BUTTON=y
+CONFIG_BUTTON_GPIO=y
+CONFIG_CLK=y
+CONFIG_GPIO_HOG=y
+CONFIG_LED=y
+CONFIG_LED_BLINK=y
+CONFIG_LED_GPIO=y
+CONFIG_MTD=y
+CONFIG_DM_MTD=y
+CONFIG_MTK_SPI_NAND=y
+CONFIG_MTK_SPI_NAND_MTD=y
+CONFIG_MTD_UBI_FASTMAP=y
+CONFIG_PHY_FIXED=y
+CONFIG_MEDIATEK_ETH=y
+CONFIG_PCIE_MEDIATEK=y
+CONFIG_PHY=y
+CONFIG_PHY_MTK_TPHY=y
+CONFIG_PINCTRL=y
+CONFIG_PINCONF=y
+CONFIG_PINCTRL_MT7622=y
+CONFIG_POWER_DOMAIN=y
+CONFIG_MTK_POWER_DOMAIN=y
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_DM_REGULATOR_GPIO=y
+CONFIG_RAM=y
+CONFIG_DM_SERIAL=y
+CONFIG_SERIAL_RX_BUFFER=y
+CONFIG_MTK_SERIAL=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_USB=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_MTK=y
+CONFIG_USB_STORAGE=y
+CONFIG_ZSTD=y
+CONFIG_HEXDUMP=y
--- /dev/null
+++ b/arch/arm/dts/mt7622-linksys-e8450-ubi.dts
@@ -0,0 +1,214 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 MediaTek Inc.
+ * Author: Sam Shih <sam.shih@mediatek.com>
+ */
+
+/dts-v1/;
+#include <dt-bindings/input/linux-event-codes.h>
+#include "mt7622.dtsi"
+#include "mt7622-u-boot.dtsi"
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	model = "mt7622-linksys-e8450-ubi";
+	compatible = "mediatek,mt7622", "linksys,e8450-ubi";
+	chosen {
+		stdout-path = &uart0;
+		tick-timer = &timer0;
+	};
+
+	aliases {
+		spi0 = &snand;
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		factory {
+			label = "reset";
+			gpios = <&gpio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&gpio 102 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		led_power: power_blue {
+			label = "power:blue";
+			gpios = <&gpio 95 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+
+		power_orange {
+			label = "power:orange";
+			gpios = <&gpio 96 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		inet_blue {
+			label = "inet:blue";
+			gpios = <&gpio 97 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		inet_orange {
+			label = "inet:orange";
+			gpios = <&gpio 98 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+	};
+
+	memory@40000000 {
+		device_type = "memory";
+		reg = <0x40000000 0x20000000>;
+	};
+
+	reg_1p8v: regulator-1p8v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-1.8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	reg_3p3v: regulator-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	reg_5v: regulator-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-5V";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+};
+
+&pcie {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie0_pins>, <&pcie1_pins>;
+	status = "okay";
+
+	pcie@0,0 {
+		status = "okay";
+	};
+
+	pcie@1,0 {
+		status = "okay";
+	};
+};
+
+&pinctrl {
+	pcie0_pins: pcie0-pins {
+		mux {
+			function = "pcie";
+			groups = "pcie0_pad_perst",
+				 "pcie0_1_waken",
+				 "pcie0_1_clkreq";
+		};
+	};
+
+	pcie1_pins: pcie1-pins {
+		mux {
+			function = "pcie";
+			groups = "pcie1_pad_perst",
+				 "pcie1_0_waken",
+				 "pcie1_0_clkreq";
+		};
+	};
+
+	snfi_pins: snfi-pins {
+		mux {
+			function = "flash";
+			groups = "snfi";
+		};
+	};
+
+	uart0_pins: uart0 {
+		mux {
+			function = "uart";
+			groups = "uart0_0_tx_rx" ;
+		};
+	};
+
+	watchdog_pins: watchdog-default {
+		mux {
+			function = "watchdog";
+			groups = "watchdog";
+		};
+	};
+};
+
+&snand {
+	pinctrl-names = "default";
+	pinctrl-0 = <&snfi_pins>;
+	status = "okay";
+	quad-spi;
+
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partition@0 {
+			label = "bl2";
+			reg = <0x0 0x80000>;
+		};
+
+		partition@80000 {
+			label = "ubi";
+			reg = <0x80000 0x7f80000>;
+			compatible = "linux,ubi";
+		};
+	};
+};
+
+&uart0 {
+	mediatek,force-highspeed;
+	status = "okay";
+};
+
+&watchdog {
+	pinctrl-names = "default";
+	pinctrl-0 = <&watchdog_pins>;
+	status = "okay";
+};
+
+&eth {
+	status = "okay";
+	mediatek,gmac-id = <0>;
+	phy-mode = "2500base-x";
+	mediatek,switch = "mt7531";
+	reset-gpios = <&gpio 54 GPIO_ACTIVE_HIGH>;
+
+	fixed-link {
+		speed = <2500>;
+		full-duplex;
+	};
+};
+
+&ssusb {
+	vusb33-supply = <&reg_3p3v>;
+	vbus-supply = <&reg_5v>;
+	status = "okay";
+};
+
+&u3phy {
+	status = "okay";
+};
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1192,6 +1192,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
 	mt7622-rfb.dtb \
 	mt7623a-unielec-u7623-02-emmc.dtb \
 	mt7622-bananapi-bpi-r64.dtb \
+	mt7622-linksys-e8450-ubi.dtb \
 	mt7623n-bananapi-bpi-r2.dtb \
 	mt7629-rfb.dtb \
 	mt7981-rfb.dtb \
--- /dev/null
+++ b/defenvs/linksys_e8450_env
@@ -0,0 +1,55 @@
+ethaddr_factory=ubi read 0x40080000 factory && env readmem -b ethaddr 0x400ffff4 0x6 ; setenv ethaddr_factory
+ipaddr=192.168.1.1
+serverip=192.168.1.254
+loadaddr=0x48000000
+bootcmd=if pstore check ; then run boot_recovery ; else run boot_ubi ; fi
+bootconf=config-1
+bootdelay=0
+bootfile=immortalwrt-mediatek-mt7622-linksys_e8450-ubi-initramfs-recovery.itb
+bootfile_bl2=immortalwrt-mediatek-mt7622-linksys_e8450-ubi-preloader.bin
+bootfile_fip=immortalwrt-mediatek-mt7622-linksys_e8450-ubi-bl31-uboot.fip
+bootfile_upg=immortalwrt-mediatek-mt7622-linksys_e8450-ubi-squashfs-sysupgrade.itb
+bootled_pwr=power:blue
+bootled_rec=inet:orange on
+bootmenu_confirm_return=askenv - Press ENTER to return to menu ; bootmenu 60
+bootmenu_default=0
+bootmenu_delay=0
+bootmenu_title=      [0;34m( ( ( [1;39mOpenWrt[0;34m ) ) )[0m
+bootmenu_0=Initialize environment.=run _firstboot
+bootmenu_0d=Run default boot command.=run boot_default
+bootmenu_1=Boot system via TFTP.=run boot_tftp ; run bootmenu_confirm_return
+bootmenu_2=Boot production system from flash.=run boot_production ; run bootmenu_confirm_return
+bootmenu_3=Boot recovery system from flash.=run boot_recovery ; run bootmenu_confirm_return
+bootmenu_4=Load production system via TFTP then write to flash.=setenv noboot 1 ; setenv replacevol 1 ; run boot_tftp_production ; setenv noboot ; setenv replacevol ; run bootmenu_confirm_return
+bootmenu_5=Load recovery system via TFTP then write to flash.=setenv noboot 1 ; setenv replacevol 1 ; run boot_tftp_recovery ; setenv noboot ; setenv replacevol ; run bootmenu_confirm_return
+bootmenu_6=[31mLoad BL31+U-Boot FIP via TFTP then write to flash.[0m=run boot_tftp_write_fip ; run bootmenu_confirm_return
+bootmenu_7=[31mLoad BL2 preloader via TFTP then write to flash.[0m=run boot_tftp_write_bl2 ; run bootmenu_confirm_return
+bootmenu_8=Reboot.=reset
+bootmenu_9=Reset all settings to factory defaults.=run reset_factory ; reset
+boot_first=if button reset ; then led $bootled_rec on ; run boot_tftp_recovery ; setenv flag_recover 1 ; run boot_default ; fi ; bootmenu
+boot_default=if env exists flag_recover ; then else run bootcmd ; fi ; run boot_recovery ; setenv replacevol 1 ; run boot_tftp_forever
+boot_production=led $bootled_pwr on ; run ubi_read_production && bootm $loadaddr#$bootconf ; led $bootled_pwr off
+boot_recovery=led $bootled_rec on ; run ubi_read_recovery ; bootm $loadaddr#$bootconf ; ubi remove recovery ; led $bootled_rec off
+boot_serial_write_bl2=loadx $loadaddr 115200 && run snand_write_bl2
+boot_serial_write_fip=loadx $loadaddr 115200 && run ubi_write_fip
+boot_tftp=tftpboot $loadaddr $bootfile && bootm $loadaddr#$bootconf
+boot_tftp_forever=led $bootled_rec on ; while true ; do run boot_tftp_recovery ; sleep 1 ; done
+boot_tftp_production=tftpboot $loadaddr $bootfile_upg && iminfo $loadaddr && ubi part ubi && run ubi_write_production ubi_prepare_rootfs ; if env exists noboot ; then else bootm $loadaddr#$bootconf ; fi
+boot_tftp_recovery=tftpboot $loadaddr $bootfile && iminfo $loadaddr && ubi part ubi && run ubi_write_recovery ; if env exists noboot ; then else bootm $loadaddr#$bootconf ; fi
+boot_tftp_write_bl2=tftpboot $loadaddr $bootfile_bl2 && run snand_write_bl2
+boot_tftp_write_fip=tftpboot $loadaddr $bootfile_fip && run ubi_write_fip
+boot_ubi=ubi part ubi && run boot_production ; run boot_recovery
+snand_write_bl2=mtd erase bl2 && mtd write spi-nand0 $loadaddr 0x0 0x20000 && mtd write spi-nand0 $loadaddr 0x20000 0x20000 && mtd write spi-nand0 $loadaddr 0x40000 0x20000 && mtd write spi-nand0 $loadaddr 0x60000 0x20000
+reset_factory=mw $loadaddr 0xff 0x1f000 ; ubi part ubi ; ubi write $loadaddr ubootenv 0x1f000 ; ubi write $loadaddr ubootenv2 0x1f000 ; ubi remove rootfs_data
+ubi_prepare_rootfs=if ubi check rootfs_data ; then else if env exists rootfs_data_max ; then ubi create rootfs_data $rootfs_data_max dynamic || ubi create rootfs_data - dynamic ; else ubi create rootfs_data - dynamic ; fi ; fi
+ubi_read_production=ubi read $loadaddr fit && iminfo $loadaddr && run ubi_prepare_rootfs
+ubi_read_recovery=ubi check recovery && ubi read $loadaddr recovery
+ubi_remove_rootfs=ubi check rootfs_data && ubi remove rootfs_data
+ubi_write_fip=run ubi_remove_rootfs ; ubi check fip && ubi remove fip ; ubi create fip 0x200000 static ; ubi write $loadaddr fip 0x200000
+ubi_write_production=ubi check fit && env exists replacevol && ubi remove fit ; if ubi check fit ; then else run ubi_remove_rootfs ; ubi create fit $filesize dynamic && ubi write $loadaddr fit $filesize ; fi
+ubi_write_recovery=ubi check recovery && env exists replacevol && ubi remove recovery ; if ubi check recovery ; then else run ubi_remove_rootfs ; ubi create recovery $filesize dynamic && ubi write $loadaddr recovery $filesize ; fi
+_create_env=ubi create ubootenv 0x1f000 dynamic ; ubi create ubootenv2 0x1f000 dynamic
+_init_env=setenv _init_env ; if ubi check ubootenv && ubi check ubootenv2 ; then else run _create_env ; fi ; setenv _create_env ; saveenv || run ubi_format ; saveenv || run ubi_format
+_firstboot=setenv _firstboot ; run _switch_to_menu ; run ethaddr_factory ; run _init_env ; run boot_first
+_switch_to_menu=setenv _switch_to_menu ; setenv bootdelay 3 ; setenv bootmenu_delay 3 ; setenv bootmenu_0 $bootmenu_0d ; setenv bootmenu_0d ; run _bootmenu_update_title
+_bootmenu_update_title=setenv _bootmenu_update_title ; setenv bootmenu_title "$bootmenu_title       [33m$ver[0m"
