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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 f743ce851a..1592644faa 100755
--- a/target/linux/ramips/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/base-files/etc/board.d/02_network
@@ -311,7 +311,8 @@ ramips_setup_interfaces()
ucidef_add_switch "switch0" \
"4:lan" "6t@eth0"
;;
- cudy,wr1000)
+ cudy,wr1000|\
+ xiaomi,mir3g-v2))
ucidef_add_switch "switch0" \
"2:lan:2" "3:lan:1" "4:wan" "6@eth0"
;;
@@ -687,6 +688,9 @@ ramips_setup_macs()
xiaomi,mir3p)
lan_mac=$(mtd_get_mac_binary Factory 0xe006)
;;
+ xiaomi,mir3g-v2)
+ wan_mac=$(mtd_get_mac_binary factory 0xe006)
+ ;;
zyxel,keenetic-start)
wan_mac=$(mtd_get_mac_binary factory 40)
;;
diff --git a/target/linux/ramips/dts/mt7621_xiaomi_mir3g-v2.dts b/target/linux/ramips/dts/mt7621_xiaomi_mir3g-v2.dts
new file mode 100644
index 0000000000..6e06ed07e8
--- /dev/null
+++ b/target/linux/ramips/dts/mt7621_xiaomi_mir3g-v2.dts
@@ -0,0 +1,145 @@
+// 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 = "xiaomi,mir3g-v2", "mediatek,mt7621-soc";
+ model = "Xiaomi Mi Router 3G v2";
+
+ aliases {
+ led-boot = &led_status_yellow;
+ led-failsafe = &led_status_yellow;
+ led-running = &led_status_blue;
+ led-upgrade = &led_status_yellow;
+ };
+
+ chosen {
+ bootargs = "console=ttyS0,115200n8";
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led_status_blue: status_blue {
+ label = "mir3gv2:blue:status";
+ gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
+ };
+
+ led_status_yellow: status_yellow {
+ label = "mir3gv2:yellow:status";
+ gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ keys {
+ compatible = "gpio-keys";
+
+ reset {
+ label = "reset";
+ gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_RESTART>;
+ };
+ };
+};
+
+&spi0 {
+ status = "okay";
+
+ m25p80@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <80000000>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "u-boot";
+ reg = <0x0 0x30000>;
+ read-only;
+ };
+
+ partition@30000 {
+ label = "u-boot-env";
+ reg = <0x30000 0x10000>;
+ read-only;
+ };
+
+ partition@40000 {
+ label = "Bdata";
+ reg = <0x40000 0x10000>;
+ read-only;
+ };
+
+ factory: partition@50000 {
+ label = "factory";
+ reg = <0x50000 0x10000>;
+ read-only;
+ };
+
+ partition@60000 {
+ label = "crash";
+ reg = <0x60000 0x10000>;
+ read-only;
+ };
+
+ partition@70000 {
+ label = "cfg_bak";
+ reg = <0x70000 0x10000>;
+ read-only;
+ };
+
+ partition@80000 {
+ label = "overlay";
+ reg = <0x80000 0x100000>;
+ read-only;
+ };
+
+ firmware: partition@180000 {
+ compatible = "denx,uimage";
+ label = "firmware";
+ reg = <0x180000 0xe80000>;
+ };
+ };
+ };
+};
+
+&pcie {
+ status = "okay";
+};
+
+&pcie0 {
+ wifi@0,0 {
+ compatible = "pci14c3,7662";
+ reg = <0x0000 0 0 0 0>;
+ mediatek,mtd-eeprom = <&factory 0x8000>;
+ ieee80211-freq-limit = <5000000 6000000>;
+ };
+};
+
+&pcie1 {
+ wifi@0,0 {
+ compatible = "pci14c3,7603";
+ reg = <0x0000 0 0 0 0>;
+ mediatek,mtd-eeprom = <&factory 0x0000>;
+ ieee80211-freq-limit = <2400000 2500000>;
+ };
+};
+
+&ethernet {
+ mtd-mac-address = <&factory 0xe000>;
+ mediatek,portmap = "llllw";
+};
+
+&state_default {
+ gpio {
+ ralink,group = "jtag", "uart2", "uart3", "wdt";
+ ralink,function = "gpio";
+ };
+};
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 28ae0d451f..1ac8691f42 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -298,6 +298,18 @@ define Device/xiaomi_mir3g
endef
TARGET_DEVICES += xiaomi_mir3g
+define Device/xiaomi_mir3g-v2
+ DTS := mt7621_xiaomi_mir3g-v2
+ IMAGE_SIZE := 14848k
+ KERNEL_SIZE := 4096k
+ BOARD_NAME := mir3g-v2
+ DEVICE_TITLE := Xiaomi Mi Router 3G v2
+ DEVICE_PACKAGES := kmod-mt7603 kmod-mt76x2 wpad-basic
+ IMAGES += factory.bin
+ IMAGE/factory.bin := append-kernel | pad-to $$(KERNEL_SIZE) | append-rootfs | pad-rootfs
+endef
+TARGET_DEVICES += xiaomi_mir3g-v2
+
define Device/mt7621
DTS := MT7621
BLOCKSIZE := 64k