diff --git a/patches/openwrt/0024-ramips-add-support-for-ASUS-RT-AC57U.patch b/patches/openwrt/0024-ramips-add-support-for-ASUS-RT-AC57U.patch
new file mode 100644
index 0000000000000000000000000000000000000000..ff3813766d853291ce46c9c969158e8864f5525b
--- /dev/null
+++ b/patches/openwrt/0024-ramips-add-support-for-ASUS-RT-AC57U.patch
@@ -0,0 +1,292 @@
+From: David Bauer <mail@david-bauer.net>
+Date: Sun, 23 Jun 2019 15:10:01 +0200
+Subject: ramips: add support for ASUS RT-AC57U
+
+SoC: MediaTek MT7621AT
+RAM: 128M (Winbond W631GG6KB-15)
+FLASH: 16MB (Spansion S25FL128SA)
+WiFi: MediaTek MT7603EN bgn 2SS
+WiFi: MediaTek MT7612EN nac 2SS
+BTN: Reset - WPS
+LED: - Power
+ - LAN {1-4}
+ - WAN
+ - WiFi 2.4 GHz
+ - WiFi 5 GHz
+ - USB
+UART: UART is present next to the Power LED.
+ TX - RX - GND - 3V3 / 57600-8N1
+ 3V3 is the nearest one to the Power LED.
+
+Installation
+------------
+Via TFTP:
+1. Set your computers IP-Address to 192.168.1.75.
+2. Power up the Router with the Reset button pressed.
+3. Release the Reset button after 5 seconds.
+4. Upload OpenWRT sysupgrade image via TFTP:
+ > tftp -4 -v -m binary 192.168.1.1 -c put <IMAGE>
+
+Via SSH:
+Note: User/password for SSH is identical with the one used in the
+Web-interface.
+1. Complete the initial setup wizard.
+2. Activate SSH under "Administration" -> "System".
+3. Transfer the OpenWrt sysupgrade image via scp:
+ > scp owrt.bin admin@192.168.1.1:/tmp
+4. Connect via SSH to the router.
+ > ssh admin@192.168.1.1
+5. Write the OpenWrt image to flash.
+ > mtd-write -i /tmp/owrt.bin -d linux
+6. Reboot the router
+ > reboot
+
+Signed-off-by: David Bauer <mail@david-bauer.net>
+
+diff --git a/target/linux/ramips/base-files/etc/board.d/02_network b/target/linux/ramips/base-files/etc/board.d/02_network
+index 9424c7ddfd64f9149a24ff91e63b71990265d211..7ceec7742aa7a0248ea3c31053b9adda2b247c9c 100755
+--- a/target/linux/ramips/base-files/etc/board.d/02_network
++++ b/target/linux/ramips/base-files/etc/board.d/02_network
+@@ -186,6 +186,7 @@ ramips_setup_interfaces()
+ ucidef_add_switch "switch0" \
+ "1:lan" "2:lan" "3:lan" "4:lan" "6t@eth0"
+ ;;
++ asus,rt-ac57u|\
+ atp-52b|\
+ awm002-evb-4M|\
+ awm002-evb-8M|\
+@@ -413,6 +414,11 @@ ramips_setup_macs()
+ wmdr-143n)
+ lan_mac=$(cat /sys/class/net/eth0/address)
+ ;;
++ asus,rt-ac57u|\
++ vr500)
++ lan_mac=$(mtd_get_mac_binary factory 57344)
++ wan_mac=$(mtd_get_mac_binary factory 57350)
++ ;;
+ all0239-3g|\
+ carambola|\
+ freestation5|\
+@@ -541,10 +547,6 @@ ramips_setup_macs()
+ lan_mac=$(mtd_get_mac_ascii u-boot-env LAN_MAC_ADDR)
+ wan_mac=$(mtd_get_mac_ascii u-boot-env WAN_MAC_ADDR)
+ ;;
+- vr500)
+- lan_mac=$(mtd_get_mac_binary factory 57344)
+- wan_mac=$(mtd_get_mac_binary factory 57350)
+- ;;
+ w306r-v20)
+ lan_mac=$(cat /sys/class/net/eth0/address)
+ wan_mac=$(macaddr_add "$lan_mac" 5)
+diff --git a/target/linux/ramips/base-files/etc/diag.sh b/target/linux/ramips/base-files/etc/diag.sh
+index 097cc6df569518f64dbfd641eeccc1a4b1b37a2b..16e482c3879ff727faea9ffde31da634004fee93 100644
+--- a/target/linux/ramips/base-files/etc/diag.sh
++++ b/target/linux/ramips/base-files/etc/diag.sh
+@@ -141,6 +141,7 @@ get_status_led() {
+ youhua,wr1200js)
+ status_led="$boardname:blue:wps"
+ ;;
++ asus,rt-ac57u|\
+ d240|\
+ dap-1350|\
+ na930|\
+diff --git a/target/linux/ramips/base-files/lib/upgrade/platform.sh b/target/linux/ramips/base-files/lib/upgrade/platform.sh
+index 7213b22d0c2734488bd96bc34e921f08649b8c2f..e4d813341b0e4d1ac804ee8cf0ec258e9c08fcd1 100755
+--- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
++++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
+@@ -27,6 +27,7 @@ platform_check_image() {
+ ar725w|\
+ asl26555-8M|\
+ asl26555-16M|\
++ asus,rt-ac57u|\
+ awapn2403|\
+ awm002-evb-4M|\
+ awm002-evb-8M|\
+diff --git a/target/linux/ramips/dts/RT-AC57U.dts b/target/linux/ramips/dts/RT-AC57U.dts
+new file mode 100644
+index 0000000000000000000000000000000000000000..649240b837275f968ac732878996b1597c37d05d
+--- /dev/null
++++ b/target/linux/ramips/dts/RT-AC57U.dts
+@@ -0,0 +1,150 @@
++// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
++/dts-v1/;
++
++#include "mt7621.dtsi"
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/input/input.h>
++
++/ {
++ compatible = "asus,rt-ac57u", "mediatek,mt7621-soc";
++ model = "ASUS RT-AC57U";
++
++ aliases {
++ led-boot = &led_power;
++ led-failsafe = &led_power;
++ led-running = &led_power;
++ led-upgrade = &led_power;
++ };
++
++ memory@0 {
++ device_type = "memory";
++ reg = <0x0 0x8000000>;
++ };
++
++ chosen {
++ bootargs = "console=ttyS0,57600";
++ };
++
++ leds {
++ compatible = "gpio-leds";
++
++ led_power: power {
++ label = "rt-ac57u:blue:power";
++ gpios = <&gpio1 16 GPIO_ACTIVE_LOW>;
++ };
++
++ usb {
++ label = "rt-ac57u:blue:usb";
++ gpios = <&gpio1 15 GPIO_ACTIVE_LOW>;
++ };
++ };
++
++ keys {
++ compatible = "gpio-keys-polled";
++ poll-interval = <20>;
++
++ wps {
++ label = "wps";
++ gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>;
++ linux,code = <KEY_WPS_BUTTON>;
++ };
++
++ reset {
++ label = "reset";
++ gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
++ linux,code = <KEY_RESTART>;
++ };
++ };
++
++ led-regulator {
++ compatible = "regulator-fixed";
++ regulator-name = "LED-Power";
++ gpio = <&gpio1 14 GPIO_ACTIVE_LOW>;
++ regulator-min-microvolt = <3300000>;
++ regulator-max-microvolt = <3300000>;
++ regulator-always-on;
++ };
++};
++
++&spi0 {
++ status = "okay";
++
++ flash@0 {
++ compatible = "jedec,spi-nor";
++ reg = <0>;
++ spi-max-frequency = <10000000>;
++
++ partitions {
++ compatible = "fixed-partitions";
++ #address-cells = <1>;
++ #size-cells = <1>;
++
++ partition@0 {
++ label = "u-boot";
++ reg = <0x0 0x30000>;
++ read-only;
++ };
++
++ partition@30000 {
++ label = "config";
++ reg = <0x30000 0x10000>;
++ read-only;
++ };
++
++ factory: partition@40000 {
++ label = "factory";
++ reg = <0x40000 0x10000>;
++ read-only;
++ };
++
++ partition@50000 {
++ compatible = "denx,uimage";
++ label = "firmware";
++ reg = <0x50000 0xfb0000>;
++ };
++ };
++ };
++};
++
++&pcie {
++ status = "okay";
++
++ pcie0 {
++ wifi@0,0 {
++ reg = <0x0000 0 0 0 0>;
++ mediatek,mtd-eeprom = <&factory 0x8000>;
++ device_type = "pci";
++
++ led {
++ led-sources = <2>;
++ led-active-low;
++ };
++ };
++ };
++
++ pcie1 {
++ wifi@0,0 {
++ reg = <0x0000 0 0 0 0>;
++ mediatek,mtd-eeprom = <&factory 0x0000>;
++ device_type = "pci";
++
++ led {
++ led-active-low;
++ };
++ };
++ };
++};
++
++ðernet {
++ mtd-mac-address = <&factory 0x4e000>;
++};
++
++&pinctrl {
++ state_default: pinctrl0 {
++ gpio {
++ ralink,group = "sdhci";
++ ralink,function = "gpio";
++ };
++ };
++};
+diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
+index c8de8bd5ff7d1bec4de5c4ffd84a589892871ecb..e0f8cc65ebbfc93b4bfd765db5e62b5afda27c40 100644
+--- a/target/linux/ramips/image/mt7621.mk
++++ b/target/linux/ramips/image/mt7621.mk
+@@ -49,6 +49,14 @@ define Device/11acnas
+ endef
+ TARGET_DEVICES += 11acnas
+
++define Device/asus_rt-ac57u
++ DTS := RT-AC57U
++ DEVICE_TITLE := ASUS RT-AC57U
++ IMAGE_SIZE := $(ralink_default_fw_size_16M)
++ DEVICE_PACKAGES := kmod-mt7603 kmod-mt76x2 kmod-usb3 kmod-usb-ledtrig-usbport wpad-basic
++endef
++TARGET_DEVICES += asus_rt-ac57u
++
+ define Device/dir-860l-b1
+ DTS := DIR-860L-B1
+ BLOCKSIZE := 64k
+diff --git a/target/linux/ramips/mt7621/config-4.14 b/target/linux/ramips/mt7621/config-4.14
+index 2ea80a3ab0c174374fa8febc19031ff5a4dae4c3..0e060237802f2b1d6918f65894368934c225cb17 100644
+--- a/target/linux/ramips/mt7621/config-4.14
++++ b/target/linux/ramips/mt7621/config-4.14
+@@ -228,6 +228,8 @@ CONFIG_RCU_STALL_COMMON=y
+ CONFIG_REGMAP=y
+ CONFIG_REGMAP_I2C=y
+ CONFIG_REGMAP_SPI=y
++CONFIG_REGULATOR=y
++CONFIG_REGULATOR_FIXED_VOLTAGE=y
+ CONFIG_RESET_CONTROLLER=y
+ CONFIG_RFS_ACCEL=y
+ CONFIG_RPS=y
diff --git a/targets/ramips-mt7621 b/targets/ramips-mt7621
index db42f1bb21244892062bf1780420c2c54309e68b..c52acc1f44bf7d7a65802355a2717e0b9e91afac 100644
--- a/targets/ramips-mt7621
+++ b/targets/ramips-mt7621
@@ -1,3 +1,10 @@
+-- ASUS
+
+device('asus-rt-ac57u', 'asus_rt-ac57u', {
+ factory = false,
+})
+
+
-- D-Link
device('d-link-dir-860l-b1', 'dir-860l-b1', {