ramips: mt76x8: add support for Cudy TR1200 v1

Hardware:
 - SoC: MediaTek MT7628AN (MIPS 580MHz)
 - Flash: 16 MiB XMC 25QH128CH10
 - RAM: 128 MiB ESMT M14D1G1664A
 - WLAN: 2.4 GHz (MT7628), 5 GHz (MT7613BEN 802.11ac)
 - Ethernet: 1x 10/100 Mbps WAN, 1x 10/100 LAN (MT7628)
 - USB 2.0 port
 - Buttons: 1 Reset button, 1 slider button
 - LEDs: 1x Red, 1x White
 - Serial console: unpopulated header, 115200 8n1
 - Power: 5 VDC, 2 A

MAC addresses:
+---------+-------------------+-----------+
|         | MAC               | Algorithm |
+---------+-------------------+-----------+
| WAN     | 80:af:ca:xx:xx:x0 | label     |
| LAN     | 80:af:ca:xx:xx:x0 | label     |
| WLAN 2g | 80:af:ca:xx:xx:x0 | label     |
| WLAN 5g | 80:af:ca:xx:xx:x2 | label+2   |
+---------+-------------------+-----------+

Installation:
The installation must be done via TFTP by disassembling the router.
On other occasions Cudy has distributed intermediate firmware to make
installation easier, and so I recommend checking the Wiki for this
device if there is a more convenient solution than the one below.

To install using TFTP:
1. Upgrade to a beta firmware (signed by Cudy) that can be downloaded
from the wiki. This is required in order to use an unlocked u-boot.
2. Connect to UART.
3. While the router is turning on, press 1.
4. Connect to LAN and set your IP to 192.168.1.88/24. Configure a TFTP
server and an OpenWrt initramfs-kernel.bin firmware file as recovery.bin.
5. Press Enter three times. Verify the filename.
6. If you can reach LuCI or SSH now, just use the sysupgrade image with
the 'Keep settings' option turned off.

If you don't want to use the beta firmware nor the unlocked u-boot, you
can install the firmware writing the sysupgrade image on the firmware
partition of the SPI flash.

Signed-off-by: Luis Mita <[email protected]>

target/linux/ramips/dts/mt7628an_cudy_tr1200-v1.dts

@@ -0,0 +1,198 @@
+// 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 = "cudy,tr1200", "mediatek,mt7628an-soc";
+	model = "Cudy TR1200";
+
+	aliases {
+		led-boot = &led_status;
+		led-running = &led_status;
+		led-failsafe = &led_status;
+		led-upgrade = &led_status;
+		label-mac-device = &ethernet;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+		};
+
+		mode {
+			label = "mode";
+			linux,input-type = <EV_SW>;
+			linux,code = <BTN_0>;
+			gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_status: led_0 {
+			function = LED_FUNCTION_POWER;
+			color = <LED_COLOR_ID_RED>;
+			gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
+		};
+
+		led_1 {
+			function = LED_FUNCTION_STATUS;
+			color = <LED_COLOR_ID_WHITE>;
+			gpios = <&gpio 43 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio_export {
+		compatible = "gpio-export";
+
+		usb {
+			gpio-export,name = "usb";
+			gpio-export,output = <1>;
+			gpios = <&gpio 4 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&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 0x30000>;
+				read-only;
+			};
+
+			partition@30000 {
+				label = "u-boot-env";
+				reg = <0x30000 0x10000>;
+				read-only;
+			};
+
+			partition@40000 {
+				label = "factory";
+				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_8000: eeprom@8000 {
+						reg = <0x8000 0x4da8>;
+					};
+				};
+			};
+
+			partition@50000 {
+				compatible = "denx,uimage";
+				label = "firmware";
+				reg = <0x50000 0xf80000>;
+			};
+
+			partition@fd0000 {
+				label = "debug";
+				reg = <0xfd0000 0x10000>;
+				read-only;
+			};
+
+			partition@fe0000 {
+				label = "backup";
+				reg = <0xfe000 0x10000>;
+				read-only;
+			};
+
+			partition@ff0000 {
+				label = "bdinfo";
+				reg = <0xff0000 0x10000>;
+				read-only;
+
+				nvmem-layout {
+					compatible = "fixed-layout";
+					#address-cells = <1>;
+					#size-cells = <1>;
+
+					macaddr_bdinfo_de00: macaddr@de00 {
+						compatible = "mac-base";
+						reg = <0xde00 0x6>;
+						#nvmem-cell-cells = <1>;
+					};
+				};
+			};
+		};
+	};
+};
+
+&state_default {
+	gpio {
+		groups = "i2c", "gpio", "wdt", "p0led_an", "wled_an";
+		function = "gpio";
+	};
+};
+
+&ehci {
+	status = "okay";
+};
+
+&ohci {
+	status = "okay";
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie0 {
+	wifi@0,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		nvmem-cells = <&eeprom_factory_8000>, <&macaddr_bdinfo_de00 2>;
+		nvmem-cell-names = "eeprom", "mac-address";
+		ieee80211-freq-limit = <5000000 6000000>;
+	};
+};
+
+&wmac {
+	status = "okay";
+
+	nvmem-cells = <&eeprom_factory_0>, <&macaddr_bdinfo_de00 0>;
+	nvmem-cell-names = "eeprom", "mac-address";
+};
+
+&ethernet {
+	nvmem-cells = <&macaddr_bdinfo_de00 0>;
+	nvmem-cell-names = "mac-address";
+};
+
+&esw {
+	mediatek,portmap = <0x3d>;
+	mediatek,portdisable = <0x3c>;
+};

target/linux/ramips/image/mt76x8.mk

@@ -147,6 +147,17 @@ define Device/comfast_cf-wr758ac-v2
 endef
 TARGET_DEVICES += comfast_cf-wr758ac-v2
 
+define Device/cudy_tr1200-v1
+  IMAGE_SIZE := 15872k
+  DEVICE_VENDOR := Cudy
+  DEVICE_MODEL := TR1200
+  DEVICE_VARIANT := v1
+  DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci kmod-usb-ledtrig-usbport \
+	kmod-mt7615e kmod-mt7663-firmware-ap
+  SUPPORTED_DEVICES += R46
+endef
+TARGET_DEVICES += cudy_tr1200-v1
+
 define Device/cudy_wr1000
   IMAGE_SIZE := 7872k
   IMAGES += factory.bin

target/linux/ramips/mt76x8/base-files/etc/board.d/02_network

@@ -94,6 +94,10 @@ ramips_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"4:lan" "6@eth0"
 		;;
+	cudy,tr1200)
+		ucidef_add_switch "switch0" \
+			"0:lan" "1:wan" "6@eth0"
+		;;
 	cudy,wr1000)
 		ucidef_add_switch "switch0" \
 			"2:lan:2" "3:lan:1" "4:wan" "6@eth0"