ath79: add support to TrendNet TEW-673GRU

Add support for the TrendNet TEW-673GRU to ath79.
This device was supported in 19.07.9 but was deprecated with ar71xx.
This is mostly a copy of D-Link DIR-825 B1.
Updates have been completed to enable factory.bin and sysupgrade.bin both.
Code improvements to DTS file and makefile.

Architecture   |  MIPS
Vendor         |  Qualcomm Atheros
bootloader     |  U-Boot
System-On-Chip |  AR7161 rev 2 (MIPS 24Kc V7.4)
CPU/Speed      |  24Kc V7.4 680 MHz
Flash-Chip     |  Macronix MX25L6405D
Flash size     |  8192 KiB
RAM Chip:      |  ProMOS V58C2256164SCI5 × 2
RAM size       |  64 MiB
Wireless       |  2 x Atheros AR922X 2.4GHz/5.0GHz 802.11abgn
Ethernet       |  RealTek RTL8366S Gigabit w/ port based vlan support
USB            |  Yes 2 x 2.0

Initial Flashing Process:
	1) Download 22.03 tew-673gru factory bin
	2) Flash 22.03 using TrendNet GUI

OpenWRT Upgrade Process
	3) Download 22.03 tew-673gru sysupgrade.bin
	4) Flash 22.03 using OpenWRT GUI

Signed-off-by: Korey Caro <korey.caro@gmail.com>

4 files changed, 204 insertions, 4 deletions

diff --git a/target/linux/ath79/dts/ar7161_trendnet_tew-673gru.dts b/target/linux/ath79/dts/ar7161_trendnet_tew-673gru.dts
new file mode 100644
index 0000000000..8657e291bd
--- /dev/null
+++ b/target/linux/ath79/dts/ar7161_trendnet_tew-673gru.dts
@@ -0,0 +1,180 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "ar7100.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "trendnet,tew-673gru", "qca,ar7161";
+	model = "TRENDNET TEW-673GRU";
+
+	aliases {
+		led-boot = &led_wps;
+		led-failsafe = &led_wps;
+		led-running = &led_wps;
+		led-upgrade = &led_wps;
+	};
+
+	extosc: ref {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-output-names = "ref";
+		clock-frequency = <40000000>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_wps: wps {
+			label = "blue:wps";
+			gpios = <&gpio 9 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
+		};
+
+		wps {
+			label = "wps";
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	rtl8366s {
+		compatible = "realtek,rtl8366s";
+		gpio-sda = <&gpio 5 GPIO_ACTIVE_HIGH>;
+		gpio-sck = <&gpio 7 GPIO_ACTIVE_HIGH>;
+		realtek,initvals = <0x06 0x0108>;
+
+		mdio-bus {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			phy4: ethernet-phy@4 {
+				reg = <4>;
+				phy-mode = "rgmii";
+			};
+		};
+	};
+	
+	virtual_flash {
+		compatible = "mtd-concat";
+		devices = <&fwconcat0 &fwconcat1>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				compatible = "denx,uimage";
+				label = "firmware";
+				reg = <0x0 0x0>;
+			};
+		};
+	};
+};
+
+&usb1 {
+	status = "okay";
+};
+
+&usb2 {
+	status = "okay";
+};
+
+&usb_phy {
+	status = "okay";
+};
+
+&pcie0 {
+	status = "okay";
+
+	wifi@0,11 {
+		compatible = "pci168c,0029";
+		reg = <0x8800 0 0 0 0>;
+		qca,no-eeprom;
+	};
+
+	wifi@0,12 {
+		compatible = "pci168c,0029";
+		reg = <0x9000 0 0 0 0>;
+		qca,no-eeprom;
+	};
+};
+
+&pll {
+	clocks = <&extosc>;
+};
+
+&spi {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x000000 0x040000>;
+				read-only;
+			};
+
+			partition@40000 {
+				label = "config";
+				reg = <0x040000 0x010000>;
+				read-only;
+			};
+
+			fwconcat0: partition@50000 {
+				label = "fwconcat0";
+				reg = <0x050000 0x610000>;
+			};
+
+			partition@660000 {
+				label = "caldata";
+				reg = <0x660000 0x010000>;
+				read-only;
+			};
+
+			fwconcat1: partition@670000 {
+				label = "fwconcat1";
+				reg = <0x670000 0x190000>;
+			};
+		};
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	pll-data = <0x11110000 0x00001099 0x00991099>;
+
+	fixed-link {
+		speed = <1000>;
+		full-duplex;
+	};
+};
+
+&eth1 {
+	status = "okay";
+
+	pll-data = <0x11110000 0x00001099 0x00991099>;
+
+	phy-handle = <&phy4>;
+};
diff --git a/target/linux/ath79/generic/base-files/etc/board.d/02_network b/target/linux/ath79/generic/base-files/etc/board.d/02_network
index 1d8beaaa25..e47f66c2f2 100644
--- a/target/linux/ath79/generic/base-files/etc/board.d/02_network
+++ b/target/linux/ath79/generic/base-files/etc/board.d/02_network
@@ -195,7 +195,8 @@ ath79_setup_interfaces()
 		;;
 	buffalo,wzr-hp-g300nh-rb|\
 	buffalo,wzr-hp-g300nh-s|\
-	dlink,dir-825-b1)
+	dlink,dir-825-b1|\
+	trendnet,tew-673gru)
 		ucidef_set_interface_wan "eth1"
 		ucidef_add_switch "switch0" \
 			"0:lan" "1:lan" "2:lan" "3:lan" "5@eth0"
@@ -605,7 +606,8 @@ ath79_setup_macs()
 	dlink,dap-3662-a1)
 		label_mac=$(mtd_get_mac_ascii bdcfg "wlanmac")
 		;;
-	dlink,dir-825-b1)
+	dlink,dir-825-b1|\
+	trendnet,tew-673gru)
 		lan_mac=$(mtd_get_mac_text "caldata" 0xffa0)
 		wan_mac=$(mtd_get_mac_text "caldata" 0xffb4)
 		label_mac=$wan_mac
diff --git a/target/linux/ath79/generic/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom b/target/linux/ath79/generic/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
index 04705aadf8..6dd237e1fa 100644
--- a/target/linux/ath79/generic/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
+++ b/target/linux/ath79/generic/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
@@ -160,7 +160,8 @@ case "$FIRMWARE" in
 	netgear,wndap360)
 		caldata_extract "art" 0x1000 0xeb8
 		;;
-	dlink,dir-825-b1)
+	dlink,dir-825-b1|\
+	trendnet,tew-673gru)
 		caldata_extract "caldata" 0x1000 0xeb8
 		ath9k_patch_mac_crc $(mtd_get_mac_text "caldata" 0xffa0) 0x20c
 		;;
@@ -179,7 +180,8 @@ case "$FIRMWARE" in
 	netgear,wndap360)
 		caldata_extract "art" 0x5000 0xeb8
 		;;
-	dlink,dir-825-b1)
+	dlink,dir-825-b1|\
+	trendnet,tew-673gru)
 		caldata_extract "caldata" 0x5000 0xeb8
 		ath9k_patch_mac_crc $(macaddr_add $(mtd_get_mac_text "caldata" 0xffb4) 1) 0x20c
 		;;
diff --git a/target/linux/ath79/image/generic.mk b/target/linux/ath79/image/generic.mk
index 7b760abc3e..11c5669fe4 100644
--- a/target/linux/ath79/image/generic.mk
+++ b/target/linux/ath79/image/generic.mk
@@ -2554,6 +2554,22 @@ define Device/teltonika_rut955-h7v3c0
 endef
 TARGET_DEVICES += teltonika_rut955-h7v3c0
 
+define Device/trendnet_tew-673gru
+  SOC := ar7161
+  DEVICE_VENDOR := Trendnet
+  DEVICE_MODEL := TEW-673GRU
+  DEVICE_VARIANT := v1.0R
+  DEVICE_PACKAGES := -uboot-envtools kmod-usb-ohci kmod-usb2 \
+	kmod-owl-loader kmod-switch-rtl8366s
+  IMAGE_SIZE := 7808k
+  FACTORY_SIZE := 6144k
+  IMAGES += factory.bin
+  IMAGE/factory.bin = append-kernel | pad-to $$$$(BLOCKSIZE) | append-rootfs | \
+	pad-rootfs | check-size $$$$(FACTORY_SIZE) | pad-to $$$$(FACTORY_SIZE) | \
+	append-string AP94-AR7161-RT-080619-01
+endef
+TARGET_DEVICES += trendnet_tew-673gru
+
 define Device/trendnet_tew-823dru
   SOC := qca9558
   DEVICE_VENDOR := Trendnet