ramips: add support for TP-Link RE650 v2

TP-Link RE650 v2 is largely similar to v1 that
is already supported by OpenWrt. Notable differences
is differnt SPI Flash - 8 MB instead of 16 MB
(from cFeon instead of Winbond) and a different
configuration of PCIE connections to wifi chips.
Otherwise it's largely the same product as v1

Hardware specification:

- SoC 880 MHz - MediaTek MT7621AT
- 128 MB of DDR3 RAM
- 8 MB - cFeon QH64A-104HIP
- 4T4R 2.4 GHz - MediaTek MT7615E
- 4T4R 5 GHz - MediaTek MT7615E
- 1x 1 Gbps Ethernet - MT7621AT integrated
- 7x LEDs (Power, 2G, 5G, WPS(x2), Lan(x2))
- 4x buttons (Reset, Power, WPS, LED)
- UART pinout - GND, RX, TX, labeled in the middle of the PCB,
  requires soldering because they're not through holes.

  Serial console @ 57600,8n1

Flash instructions:

Upload
openwrt-ramips-mt7621-tplink_re650-v2-squashfs-factory.bin
from the RE650 web interface.

TFTP recovery to stock firmware:
I didn't try recovering back to the stock firmware, however,
if there is such process for other RExxx devices, it seems like
it could be similar here.

Signed-off-by: Marcin Gordziejewski <openwrt@flicksfix.com>

target/linux/ramips/dts/mt7621_tplink_re650-v2.dts

@@ -0,0 +1,195 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "tplink,re650-v2", "mediatek,mt7621-soc";
+	model = "TP-Link RE650 v2";
+
+	aliases {
+		label-mac-device = &gmac0;
+		led-boot = &led_power;
+		led-failsafe = &led_power;
+		led-running = &led_power;
+		led-upgrade = &led_power;
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		wps {
+			label = "wps";
+			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+
+		power {
+			label = "power";
+			gpios = <&gpio 25 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+			linux,code = <KEY_POWER>;
+		};
+
+		led {
+			label = "led";
+			gpios = <&gpio 30 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+			linux,code = <KEY_LIGHTS_TOGGLE>;
+		};
+
+		reset {
+			label = "reset";
+			gpios = <&gpio 31 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_power: power {
+			label = "blue:power";
+			gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
+		};
+
+		wifi2g {
+			label = "blue:wifi2g";
+			gpios = <&gpio 23 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+
+		wifi5g {
+			label = "blue:wifi5g";
+			gpios = <&gpio 24 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy1tpt";
+		};
+
+		wps_red {
+			label = "red:wps";
+			gpios = <&gpio 26 GPIO_ACTIVE_HIGH>;
+		};
+
+		wps_blue {
+			label = "blue:wps";
+			gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
+		};
+
+		eth_act {
+			label = "green:eth_act";
+			gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
+		};
+
+		eth_link {
+			label = "green:eth_link";
+			gpios = <&gpio 29 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <40000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x0 0x20000>;
+				read-only;
+			};
+
+			partition@20000 {
+				compatible = "tplink,firmware";
+				label = "firmware";
+				reg = <0x20000 0x7a0000>;
+			};
+
+			config: partition@7c0000 {
+				label = "config";
+				reg = <0x7c0000 0x2d440>;
+				read-only;
+			};
+
+			radio: partition@7f0000 {
+				label = "radio";
+				reg = <0x7f0000 0x10000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&state_default {
+	gpio {
+		groups = "rgmii2", "wdt";
+		function = "gpio";
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie1 {
+	wifi@0,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&radio 0x0>;
+		nvmem-cells = <&macaddr_config_10008>;
+		nvmem-cell-names = "mac-address";
+		mac-address-increment = <1>;
+		ieee80211-freq-limit = <2400000 2500000>;
+	};
+};
+
+&pcie0 {
+	wifi@0,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&radio 0x8000>;
+		nvmem-cells = <&macaddr_config_10008>;
+		nvmem-cell-names = "mac-address";
+		mac-address-increment = <2>;
+		ieee80211-freq-limit = <5000000 6000000>;
+	};
+};
+
+&ethernet {
+	pinctrl-0 = <&mdio_pins>, <&rgmii1_pins>;
+};
+
+&gmac0 {
+	nvmem-cells = <&macaddr_config_10008>;
+	nvmem-cell-names = "mac-address";
+};
+
+&switch0 {
+	ports {
+		port@0 {
+			status = "okay";
+			label = "lan";
+		};
+	};
+};
+
+&config {
+	compatible = "nvmem-cells";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	macaddr_config_10008: macaddr@10008 {
+		reg = <0x10008 0x6>;
+	};
+};

target/linux/ramips/image/mt7621.mk

@@ -1636,6 +1636,17 @@ define Device/tplink_re650-v1
 endef
 TARGET_DEVICES += tplink_re650-v1
 
+define Device/tplink_re650-v2
+  $(Device/dsa-migration)
+  $(Device/tplink-safeloader)
+  DEVICE_MODEL := RE650
+  DEVICE_VARIANT := v2
+  DEVICE_PACKAGES := kmod-mt7615e kmod-mt7615-firmware
+  TPLINK_BOARD_ID := RE650-V2
+  IMAGE_SIZE := 7994k
+endef
+TARGET_DEVICES += tplink_re650-v2
+
 define Device/tplink_tl-wpa8631p-v3
   $(Device/dsa-migration)
   $(Device/tplink-safeloader)

target/linux/ramips/mt7621/base-files/etc/board.d/01_leds

@@ -120,7 +120,8 @@ tplink,re350-v1)
 	ucidef_set_led_netdev "eth_link" "LAN link" "green:eth_link" "lan" "link"
 	;;
 tplink,re500-v1|\
-tplink,re650-v1)
+tplink,re650-v1|\
+tplink,re650-v2)
 	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"
 	;;

target/linux/ramips/mt7621/base-files/etc/board.d/02_network

@@ -17,6 +17,7 @@ ramips_setup_interfaces()
 	tplink,re350-v1|\
 	tplink,re500-v1|\
 	tplink,re650-v1|\
+	tplink,re650-v2|\
 	ubnt,unifi-6-lite|\
 	ubnt,unifi-nanohd)
 		ucidef_set_interface_lan "lan"