ath79: add support for TP-Link CPE220 v2

This seems to be identical to CPE210 v1 despite having removable
antennas.

Specifications:

    * SoC: Qualcomm Atheros AR9344 (560 MHz)
    * RAM: 64MB
    * Storage: 8 MB
    * Wireless: 2.4GHz N based built into SoC 2x2
    * Ethernet: 2x 100/10 Mbps, integrated into SoC, 24V POE IN

Installation:

Flash factory image through stock firmware WEB UI
or through TFTP:
To get to TFTP recovery just hold reset button while powering on for
around 4-5 seconds and release.
Rename factory image to recovery.bin
Stock TFTP server IP:192.168.0.100
Stock device TFTP address:192.168.0.254

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

target/linux/ath79/base-files/etc/board.d/01_leds

@@ -159,6 +159,7 @@ tplink,archer-d50-v1)
 	ucidef_set_led_switch "wan_link" "WAN Link" "tp-link:white:wan" "switch0" "0x02" "" "link"
 	;;
 tplink,cpe210-v1|\
+tplink,cpe220-v2|\
 tplink,cpe510-v1)
 	ucidef_set_led_netdev "lan0" "LAN0" "tp-link:green:lan0" "eth1"
 	ucidef_set_led_switch "lan1" "LAN1" "tp-link:green:lan1" "switch0" "0x10"

target/linux/ath79/base-files/etc/board.d/02_network

@@ -103,6 +103,7 @@ ath79_setup_interfaces()
 	comfast,cf-e110n-v2|\
 	comfast,cf-e120a-v3|\
 	tplink,cpe210-v1|\
+	tplink,cpe220-v2|\
 	tplink,cpe510-v1|\
 	ubnt,nanostation-m|\
 	ubnt,routerstation)

target/linux/ath79/base-files/etc/board.d/03_gpio_switches

@@ -43,6 +43,7 @@ tplink,archer-c25-v1)
 	ucidef_add_gpio_switch "led_reset" "LED reset" "19" "1"
 	;;
 tplink,cpe210-v1|\
+tplink,cpe220-v2|\
 tplink,cpe510-v1)
 	ucidef_add_gpio_switch "poe_passthrough" "PoE Passthrough" "20"
 	;;

target/linux/ath79/dts/ar9344_tplink_cpe220-v2.dts

@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include "ar9344_tplink_cpexxx-v1.dtsi"
+
+/ {
+	compatible = "tplink,cpe220-v2", "qca,ar9344";
+	model = "TP-Link CPE220 v2";
+};

target/linux/ath79/image/generic-tp-link.mk

@@ -195,6 +195,17 @@ define Device/tplink_cpe210-v3
 endef
 TARGET_DEVICES += tplink_cpe210-v3
 
+define Device/tplink_cpe220-v2
+  $(Device/tplink-loader-okli)
+  ATH_SOC := ar9344
+  IMAGE_SIZE := 7680k
+  DEVICE_MODEL := CPE220
+  DEVICE_VARIANT := v2
+  DEVICE_PACKAGES := rssileds
+  TPLINK_BOARD_ID := CPE220V2
+endef
+TARGET_DEVICES += tplink_cpe220-v2
+
 define Device/tplink_cpe510-v1
   $(Device/tplink-loader-okli)
   ATH_SOC := ar9344

tools/firmware-utils/src/tplink-safeloader.c

@@ -118,7 +118,7 @@ static const uint8_t md5_salt[16] = {
 
 /** Firmware layout table */
 static struct device_info boards[] = {
-	/** Firmware layout for the CPE210/220 */
+	/** Firmware layout for the CPE210/220 V1 */
 	{
 		.id	= "CPE210",
 		.vendor	= "CPE510(TP-LINK|UN|N300-5):1.0\r\n",
@@ -231,6 +231,46 @@ static struct device_info boards[] = {
 		.last_sysupgrade_partition = "support-list",
 	},
 
+	/** Firmware layout for the CPE220 V2 */
+	{
+		.id	= "CPE220V2",
+		.vendor	= "CPE510(TP-LINK|UN|N300-5):1.0\r\n",
+		.support_list =
+			"SupportList:\r\n"
+			"CPE220(TP-LINK|EU|N300-2|00000000):2.0\r\n"
+			"CPE220(TP-LINK|EU|N300-2|45550000):2.0\r\n"
+			"CPE220(TP-LINK|EU|N300-2|55530000):2.0\r\n"
+			"CPE220(TP-LINK|UN|N300-2|00000000):2.0\r\n"
+			"CPE220(TP-LINK|UN|N300-2|45550000):2.0\r\n"
+			"CPE220(TP-LINK|UN|N300-2|55530000):2.0\r\n"
+			"CPE220(TP-LINK|US|N300-2|55530000):2.0\r\n"
+			"CPE220(TP-LINK|UN|N300-2):2.0\r\n"
+			"CPE220(TP-LINK|EU|N300-2):2.0\r\n"
+			"CPE220(TP-LINK|US|N300-2):2.0\r\n",
+		.support_trail = '\xff',
+		.soft_ver = NULL,
+
+		.partitions = {
+			{"fs-uboot", 0x00000, 0x20000},
+			{"partition-table", 0x20000, 0x02000},
+			{"default-mac", 0x30000, 0x00020},
+			{"product-info", 0x31100, 0x00100},
+			{"signature", 0x32000, 0x00400},
+			{"os-image", 0x40000, 0x200000},
+			{"file-system", 0x240000, 0x570000},
+			{"soft-version", 0x7b0000, 0x00100},
+			{"support-list", 0x7b1000, 0x00400},
+			{"user-config", 0x7c0000, 0x10000},
+			{"default-config", 0x7d0000, 0x10000},
+			{"log", 0x7e0000, 0x10000},
+			{"radio", 0x7f0000, 0x10000},
+			{NULL, 0, 0}
+		},
+
+		.first_sysupgrade_partition = "os-image",
+		.last_sysupgrade_partition = "support-list",
+	},
+
 	/** Firmware layout for the CPE510/520 */
 	{
 		.id	= "CPE510",