ramips: add support for Zbtlink ZBT-WE2026

This patch adds support for the Zbtlink ZBT-WE2026.

Specification:
- SoC: MediaTek MT7620N (580MHz)
- RAM: 64 MiB
- Flash: 8 MiB SPI
- LAN: 4x100M
- WAN: 1x100M

Installation through bootloader webserver:
- With the power unplugged press and hold reset button.
- Plug power and hold reset button until LED starts to blink.
- Install sysupgrade image using web interface on 192.168.1.1.

Signed-off-by: Vaclav Svoboda <svoboda@neng.cz>

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

@@ -385,6 +385,9 @@ zbt-wa05)
 	set_wifi_led "$board:blue:air"
 	set_usb_led "$board:blue:usb"
 	;;
+zbt-we2026)
+	set_wifi_led "$board:green:wlan"
+	;;
 zbt-we826)
 	ucidef_set_led_default "power" "power" "$board:green:power" "1"
 	set_wifi_led "$board:green:wifi"

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

@@ -107,6 +107,7 @@ ramips_setup_interfaces()
 	y1|\
 	youku-yk1|\
 	zbt-ape522ii|\
+	zbt-we2026|\
 	zbt-we826|\
 	zbt-wg2626|\
 	zbt-wg3526|\

target/linux/ramips/base-files/etc/diag.sh

@@ -238,7 +238,8 @@ get_status_led() {
 		status_led="$board:amber:power"
 		;;
 	whr-g300n|\
-	wlr-6000)
+	wlr-6000|\
+	zbt-we2026)
 		status_led="$board:red:power"
 		;;
 	wzr-agl300nh)

target/linux/ramips/base-files/lib/ramips.sh

@@ -646,6 +646,9 @@ ramips_board_detect() {
 	*"ZBT-WA05")
 		name="zbt-wa05"
 		;;
+	*"ZBT-WE2026")
+		name="zbt-we2026"
+		;;
 	*"ZBT-WE826")
 		name="zbt-we826"
 		;;

target/linux/ramips/base-files/lib/upgrade/platform.sh

@@ -181,6 +181,7 @@ platform_check_image() {
 	zbt-ape522ii|\
 	zbt-cpe102|\
 	zbt-wa05|\
+	zbt-we2026|\
 	zbt-we826|\
 	zbt-wg2626|\
 	zbt-wg3526|\

target/linux/ramips/dts/ZBT-WE2026.dts

@@ -0,0 +1,103 @@
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+#include "mt7620n.dtsi"
+
+/ {
+	compatible = "zbtlink,zbt-we2026", "ralink,mt7620n-soc";
+	model = "Zbtlink ZBT-WE2026";
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		power {
+			label = "zbt-we2026:red:power";
+			gpios = <&gpio1 14 GPIO_ACTIVE_LOW>;
+		};
+
+		wlan {
+			label = "zbt-we2026:green:wlan";
+			gpios = <&gpio3 0 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio3 {
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+
+	en25q64@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+
+		partition@0 {
+			label = "u-boot";
+			reg = <0x0 0x30000>;
+			read-only;
+		};
+
+		partition@30000 {
+			label = "u-boot-env";
+			reg = <0x30000 0x10000>;
+			read-only;
+		};
+
+		factory: partition@40000 {
+			label = "factory";
+			reg = <0x40000 0x10000>;
+			read-only;
+		};
+
+		partition@50000 {
+			label = "firmware";
+			reg = <0x50000 0x760000>;
+		};
+	};
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0x4>;
+	mediatek,portmap = "wllll";
+};
+
+&wmac {
+	ralink,mtd-eeprom = <&factory 0>;
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		default {
+			ralink,group = "i2c", "spi refclk", "wled";
+			ralink,function = "gpio";
+		};
+	};
+};

target/linux/ramips/image/mt7620.mk

@@ -467,6 +467,12 @@ define Device/zbt-wa05
 endef
 TARGET_DEVICES += zbt-wa05
 
+define Device/zbt-we2026
+  DTS := ZBT-WE2026
+  DEVICE_TITLE := Zbtlink ZBT-WE2026
+endef
+TARGET_DEVICES += zbt-we2026
+
 define Device/zbt-we826
   DTS := ZBT-WE826
   IMAGE_SIZE := $(ralink_default_fw_size_16M)