ramips: mt76x8: add support for Keenetic Extra (KN-1713)

Specification:
SoC: MediaTek MT7628AN
RAM: 128M DDR2, Etron Technology EM68C16CWQG-25H
Flash: 32M, cFeon EN25QH256A (Dual Boot, SPI)
Switch: MediaTek MT7628AN, 4 ports 100 Mbps
WiFi: MediaTek MT7628AN 2.4 GHz 802.11n and MediaTek MT7613BEN 5 GHz 802.11ac
USB: 1 port USB 2.0
GPIO: 3 buttons (Wi-Fi, Reset, FN), 4 LEDs (Power, Internet, FN, Wi-Fi), USB port power controls

Disassembly:
There are 2 screws at the bottom. After removing the screws, pry the gray plastic part around (it is secured with latches) and remove it.

UART Interface:
The UART interface can be connected to the 5 pin located between the WAN port and the RESET button.
Pins (from WAN port to Reset button): VCC, TX, RX, NC, GRD
Settings: 115200, 8N1

Flashing via OEM recovery software:
1. Download the OEM recovery software from the manufacturer's website
2. Download the firmware image (for OpenWRT it is *-squashfs-factory.bin), rename it to KN-1713_recovery.bin
3. Replace the file in the fw folder OEM recovery software with the file from step 2.
4. Run the OEM recovery software and follow the instructions.

Flashing via TFTP:
1. Connect your PC and router to port 1-3, configure PC interface using IP 192.168.1.2, mask 255.255.255.252
2. Serve the firmware image (for OpenWRT it is *-squashfs-factory.bin) renamed to KN-1713_recovery.bin via TFTP
3. Power up the router while pressing Reset button on the back
4. Release Restart button when Power LED starts blinking

To revert back to OEM firmware:
The return to the OEM firmware is carried out by using the methods described above with the help of the appropriate firmware image.

When using OEM bootloader, the firmware image size cannot exceed the size of one OEM «Firmware_x» partition or Kernel + rootFS size.

Signed-off-by: Anton Yu. Ivanusev <ivanusevanton@yandex.ru>
Link: https://github.com/openwrt/openwrt/pull/17382
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

4 files changed, 256 insertions, 1 deletions

diff --git a/target/linux/ramips/dts/mt7628an_keenetic_kn-1713.dts b/target/linux/ramips/dts/mt7628an_keenetic_kn-1713.dts
new file mode 100644
index 0000000000..972c88eadd
--- /dev/null
+++ b/target/linux/ramips/dts/mt7628an_keenetic_kn-1713.dts
@@ -0,0 +1,241 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+#include "mt7628an.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+	compatible = "keenetic,kn-1713", "mediatek,mt7628an-soc";
+	model = "Keenetic KN-1713";
+
+	aliases {
+		led-boot = &led_power;
+		led-failsafe = &led_power;
+		led-running = &led_power;
+		led-upgrade = &led_power;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	regulator-usb {
+		compatible = "regulator-fixed";
+		regulator-name = "USB-power";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpios = <&gpio 6 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_power: power {
+			function = LED_FUNCTION_POWER;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+		};
+
+		internet {
+			function = LED_FUNCTION_WAN;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
+		};
+
+		fn {
+			function = LED_FUNCTION_USB;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
+		};
+
+		wifi {
+			function = LED_FUNCTION_WLAN;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt","phy1tpt";
+		};
+	};
+
+
+	keys {
+		compatible = "gpio-keys";
+
+		fn {
+			label = "fn";
+			gpios = <&gpio 32 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		reset {
+			label = "restart";
+			gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&gpio 37 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+
+	virtual_flash {
+		compatible = "mtd-concat";
+		devices = <&firmware1 &firmware2>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				compatible = "denx,uimage";
+				label = "firmware";
+				reg = <0x0 0x1CC0000>;
+			};
+		};
+	};
+};
+
+&state_default {
+	gpio {
+		groups = "i2s", "i2c", "gpio", "refclk", "wdt", "wled_an";
+		function = "gpio";
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <104000000>;
+
+		partitions: partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x0 0x30000>;
+				read-only;
+			};
+
+			partition@30000 {
+				label = "u-config";
+				reg = <0x30000 0x10000>;
+				read-only;
+			};
+
+			partition@40000 {
+				label = "rf-eeprom";
+				reg = <0x40000 0x10000>;
+				read-only;
+				
+				nvmem-layout {
+					compatible = "fixed-layout";
+					#address-cells = <1>;
+					#size-cells = <1>;
+
+					eeprom_factory_0: eeprom@0 {
+						reg = <0x0 0x400>;
+					};
+
+					eeprom_factory_400: eeprom@400 {
+						reg = <0x400 0x4da8>;
+					};
+
+					macaddr_factory_4: macaddr@4 {
+						reg = <0x4 0x6>;
+					};
+				};
+			};
+
+			firmware1: partition@50000 {
+				label = "firmware_1";
+				reg = <0x50000 0xe60000>;
+			};
+
+			partition@EB0000 {
+				label = "config_1";
+				reg = <0xEB0000 0x40000>;
+				read-only;
+			};
+
+			partition@EF0000 {
+				label = "storage";
+				reg = <0xEF0000 0x100000>;
+				read-only;
+			};
+
+			partition@FF0000 {
+				label = "dump";
+				reg = <0xFF0000 0x10000>;
+				read-only;
+			};
+
+			partition@1000000 {
+				label = "u-state";
+				reg = <0x1000000 0x30000>;
+				read-only;
+			};
+
+			partition@1030000 {
+				label = "u-config_res";
+				reg = <0x1030000 0x10000>;
+				read-only;
+			};
+			
+			partition@1040000 {
+				label = "rf-eeprom_res";
+				reg = <0x1040000 0x10000>;
+				read-only;
+			};
+
+			firmware2: partition@1050000 {
+				label = "firmware_2";
+				reg = <0x1050000 0xE60000>;
+			};
+			
+			partition@1EB0000 {
+				label = "Config_2";
+				reg = <0x1EB0000 0x40000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&ethernet {
+	nvmem-cells = <&macaddr_factory_4>;
+	nvmem-cell-names = "mac-address";
+};
+
+&esw {
+	mediatek,portmap = <0x3e>;
+};
+
+&wmac {
+	status = "okay";
+
+	nvmem-cells = <&eeprom_factory_0>;
+	nvmem-cell-names = "eeprom";
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie0 {
+	wifi@0,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		nvmem-cells = <&eeprom_factory_400>;
+		nvmem-cell-names = "eeprom";
+		ieee80211-freq-limit = <5000000 6000000>;
+	};
+};
diff --git a/target/linux/ramips/image/mt76x8.mk b/target/linux/ramips/image/mt76x8.mk
index da44b0005c..dbad26a140 100644
--- a/target/linux/ramips/image/mt76x8.mk
+++ b/target/linux/ramips/image/mt76x8.mk
@@ -366,6 +366,18 @@ define Device/keenetic_kn-1613
 endef
 TARGET_DEVICES += keenetic_kn-1613
 
+define Device/keenetic_kn-1713
+  BLOCKSIZE := 64k
+  IMAGE_SIZE := 13434880
+  DEVICE_VENDOR := Keenetic
+  DEVICE_MODEL := KN-1713
+  DEVICE_PACKAGES := kmod-mt7615e kmod-mt7663-firmware-ap kmod-usb2
+  IMAGES += factory.bin
+  IMAGE/factory.bin := $$(sysupgrade_bin) | pad-to $$$$(BLOCKSIZE) | \
+	check-size | zyimage -d 0x801713 -v "KN-1713"
+endef
+TARGET_DEVICES += keenetic_kn-1713
+
 define Device/keenetic_kn-3211
   IMAGE_SIZE := 31488k
   DEVICE_VENDOR := Keenetic
diff --git a/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds b/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds
index 00e5086bb3..fda4fa3bdf 100644
--- a/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds
@@ -58,7 +58,8 @@ hiwifi,hc5661a|\
 hiwifi,hc5761a)
 	ucidef_set_led_switch "internet" "internet" "blue:internet" "switch0" "0x10"
 	;;
-keenetic,kn-1613)
+keenetic,kn-1613|\
+keenetic,kn-1713)
 	ucidef_set_led_switch "internet" "internet" "green:internet" "switch0" "0x01"
 	;;
 mediatek,linkit-smart-7688)
diff --git a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
index e57643690a..10e0e84dde 100644
--- a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
@@ -130,6 +130,7 @@ ramips_setup_interfaces()
 			"0:lan" "1:lan" "2:lan" "6@eth0"
 		;;
 	keenetic,kn-1613|\
+	keenetic,kn-1713|\
 	motorola,mwr03)
 		ucidef_add_switch "switch0" \
 			"1:lan" "2:lan" "3:lan" "0:wan" "6@eth0"