ramips: add support for TP-Link MR600 V2(EU)

MR600 V2(EU) is an LTE router that also supports 4G+ band aggregation
etc. and can reportedly achieve higher bandwidth with it.

- Specifications:

* SoC: Mediatek MT7621DAT 880MHz
* RAM: 128MB DDR3
* Flash: 16MB SPI NOR flash (GD25Q128C)
* LTE Modem: Qualcomm MDM9240
* WiFi 5GHz: Mediatek MT7613BEN
* WiFi 2.4GHz: Mediatek MT7603EN
* Ethernet: MT7530, 4x 1000Base-T.
* UART: Serial console (115200 8n1), J1(GND:3)
* Buttons: Reset, WPS.
* LED: Power, WAN, LTE, WiFi 2GHz and 5GHz, LAN, Signal1, Signal2,
  Signal3

- MAC Addresses:

OEM firmware configuration:
54:af:97:xx:xx:7b : 2.4G
54:af:97:xx:xx:7a : 5G
54:af:97:xx:xx:7c : LTE
54:af:97:xx:xx:7b : LAN (label)
54:af:97:xx:xx:7c : WAN

- Installation:

1. Download the OpenWrt initramfs-image.

Place it into a TFTP server root directory and rename it to openwrt.img
Configure the TFTP server to listen at 192.168.0.5/24.

3. Connect to the serial console.

Attach power and interrupt the boot procedure when prompted (type `tpl`).

Credentials are admin / 1234

4. Configure U-Boot for booting OpenWrt from ram

 $ tftpboot
 $ bootm

5. Transfer the OpenWrt sysupgrade image to the device.

- LTE:

In order to setup the wwan0 interface:
1. Add a `qmi` proto interface under `/etc/config/network`, e.g.:
```
config interface 'wwan0'
        option device '/dev/cdc-wdm0'
        option proto 'qmi'
        option pincode 'XXXX'
        option apn 'your_isp_apn'
```

2. Add `wwan0` interface to the `wan` firewall zone
3. `/etc/init.d/network restart`

Signed-off-by: Linos Giannopoulos <linosgian00@gmail.com>

2 files changed, 13 insertions, 0 deletions

diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds b/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
index c2bc9c3774..9cf83c357c 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
@@ -147,6 +147,11 @@ tplink,re350-v1)
 	ucidef_set_led_netdev "eth_act" "LAN act" "green:eth_act" "lan" "tx rx"
 	ucidef_set_led_netdev "eth_link" "LAN link" "green:eth_link" "lan" "link"
 	;;
+tplink,mr600-v2-eu)
+	ucidef_set_led_netdev "lan" "LAN" "white:lan" "br-lan"
+	ucidef_set_led_netdev "wan" "WAN" "white:wan" "wan"
+	ucidef_set_led_netdev "4g" "4G" "white:4g" "wwan0"
+	;;
 tplink,re500-v1|\
 tplink,re650-v1|\
 tplink,re650-v2)
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
index 14250aa150..bfc654a23a 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
@@ -100,6 +100,9 @@ ramips_setup_interfaces()
 	tplink,tl-wpa8631p-v3)
 		ucidef_set_interface_lan "lan1 lan2 lan3 plc0"
 		;;
+	tplink,mr600-v2-eu)
+		ucidef_set_interfaces_lan_wan "lan1 lan2 lan3" "wan"
+		;;
 	ubnt,edgerouter-x)
 		ucidef_set_interfaces_lan_wan "eth1 eth2 eth3 eth4" "eth0"
 		;;
@@ -216,6 +219,11 @@ ramips_setup_macs()
 		wan_mac=$(mtd_get_mac_ascii Config wan_hwaddr)
 		label_mac=$lan_mac
 		;;
+	tplink,mr600-v2-eu)
+		label_mac=$(cat "/sys/class/net/eth0/address")
+		wwan_mac=$(macaddr_add $label_mac 1)
+		ucidef_set_interface "wwan0" device "/dev/cdc-wdm0" protocol "qmi" macaddr "$wwan_mac"
+		;;
 	mikrotik,routerboard-750gr3|\
 	mikrotik,routerboard-760igs|\
 	mikrotik,routerboard-m11g|\