ramips: mt7621: Add Arcadyan WE420223-99 support

The Arcadyan WE420223-99 is a WiFi AC simultaneous dual-band access
point distributed as Experia WiFi by KPN in the Netherlands. It features
two ethernet ports and 2 internal antennas.

Specifications
--------------
SOC   : Mediatek MT7621AT
ETH   : Two 1 gigabit ports, built into the SOC
WIFI  : MT7615DN
BUTTON: Reset
BUTTON: WPS
LED   : Power (green+red)
LED   : WiFi (green+blue)
LED   : WPS (green+red)
LED   : Followme (green+red)
Power : 12 VDC, 1A barrel plug

Winbond variant:
RAM   : Winbond W631GG6MB12J, 1GBIT DDR3 SDRAM
Flash : Winbond W25Q256JVFQ, 256Mb SPI
U-Boot: 1.1.3 (Nov 23 2017 - 16:40:17), Ralink 5.0.0.1

Macronix variant:
RAM   : Nanya NT5CC64M16GP-DI, 1GBIT DDR3 SDRAM
Flash : MX25l25635FMI-10G, 256Mb SPI
U-Boot: 1.1.3 (Dec  4 2017 - 11:37:57), Ralink 5.0.0.1

Serial
------
The serial port needs a TTL/RS-232 3V3 level converter! The Serial
setting is 57600-8-N-1. The board has an unpopulated 2.54mm straight pin
header.

The pinout is: VCC (the square), RX, TX, GND.

Installation
------------
See the Wiki page [1] for more details, it comes down to:

1. Open the device, take off the heat sink
2. Connect the SPI flash chip to a flasher, e.g. a Raspberry Pi. Also
   connect the RESET pin for stability (thanks @FPSUsername for reporting)
3. Make a backup in case you want to revert to stock later
4. Flash the squashfs-factory.trx file to offset 0x50000 of the flash
5. Ensure the bootpartition variable is set to 0 in the U-Boot
   environment located at 0x30000

Note that the U-Boot is password protected, this can optionally be
removed. See the forum [2] for more details.

MAC Addresses(stock)
--------------------
+----------+------------------+-------------------+
| use      | address          | example           |
+----------+------------------+-------------------+
| Device   | label            | 00:00:00:11:00:00 |
| Ethernet | + 3              | 00:00:00:11:00:03 |
| 2g       | + 0x020000f00001 | 02:00:00:01:00:01 |
| 5g       | + 1              | 00:00:00:11:00:01 |
+----------+------------------+-------------------+

The label address is stored in ASCII in the board_data partition

Notes
-----
- This device has a dual-boot partition scheme, but OpenWRT will claim
  both partitions for more storage space.

Known issues
------------
- 2g MAC address does not match stock due to missing support for that in
  macaddr_add
- Only the power LED is configured by default

References
----------
[1] https://openwrt.org/inbox/toh/arcadyan/astoria/we420223-99
[2] https://forum.openwrt.org/t/adding-openwrt-support-for-arcadyan-we420223-99-kpn-experia-wifi/132653

Acked-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Signed-off-by: Harm Berntsen <git@harmberntsen.nl>

5 files changed, 262 insertions, 0 deletions

diff --git a/target/linux/ramips/dts/mt7621_arcadyan_we420223-99.dts b/target/linux/ramips/dts/mt7621_arcadyan_we420223-99.dts
new file mode 100644
index 0000000000..99de770707
--- /dev/null
+++ b/target/linux/ramips/dts/mt7621_arcadyan_we420223-99.dts
@@ -0,0 +1,219 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+	model = "Arcadyan WE420223-99";
+	compatible = "arcadyan,we420223-99", "mediatek,mt7621-soc";
+
+	aliases {
+		led-boot = &led_power_green;
+		led-failsafe = &led_power_red;
+		led-running = &led_power_green;
+		led-upgrade = &led_wps_green;
+		led-wifi = &led_wifi_green;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,57600 ubi.mtd=5 root=/dev/ubiblock0_0";
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_power_green: power_green {
+			label = "green:power";
+			gpios = <&gpio 42 GPIO_ACTIVE_LOW>;
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_POWER;
+			default-state = "on";
+		};
+
+		led_power_red: power_red {
+			label = "red:power";
+			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+			color = <LED_COLOR_ID_RED>;
+			function = LED_FUNCTION_FAULT;
+		};
+
+		led_wifi_blue: wifi_blue {
+			label = "blue:wifi";
+			gpios = <&gpio 41 GPIO_ACTIVE_LOW>;
+			color = <LED_COLOR_ID_BLUE>;
+			function = LED_FUNCTION_WLAN;
+		};
+
+		led_wifi_green: wifi_green {
+			label = "green:wifi";
+			gpios = <&gpio 43 GPIO_ACTIVE_LOW>;
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_WLAN;
+		};
+
+		led_wps_red: wps_red {
+			label = "red:wps";
+			gpios = <&gpio 45 GPIO_ACTIVE_LOW>;
+			color = <LED_COLOR_ID_RED>;
+			function = LED_FUNCTION_WPS;
+		};
+
+		led_wps_green: wps_green {
+			label = "green:wps";
+			gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_WPS;
+		};
+
+		led_followme_r: followme_red {
+			label = "red:followme";
+			gpios = <&gpio 47 GPIO_ACTIVE_LOW>;
+			color = <LED_COLOR_ID_RED>;
+		};
+
+		led_followme_g: followme_green {
+			label = "green:followme";
+			gpios = <&gpio 48 GPIO_ACTIVE_LOW>;
+			color = <LED_COLOR_ID_GREEN>;
+		};
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+
+		reg = <0>;
+		spi-max-frequency = <70000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "ALL";
+				reg = <0x0 0x2000000>;
+				read-only;
+			};
+
+			partition@1 {
+				label = "Bootloader";
+				reg = <0x0 0x30000>;
+				read-only;
+			};
+
+			partition@30000 {
+				label = "Config";
+				reg = <0x30000 0x10000>;
+			};
+
+			factory: partition@40000 {
+				label = "Factory";
+				reg = <0x40000 0x10000>;
+				read-only;
+			};
+
+			partition@50000 {
+				label = "kernel";
+				reg = <0x50000 0x1f60000>;
+			};
+
+			partition@490000 {
+				label = "rootfs";
+				reg = <0x490000 0x1b20000>;
+			};
+
+			partition@1000000 {
+				label = "Kernel2";
+				reg = <0x1000000 0xfb0000>;
+			};
+
+			partition@1440000 {
+				label = "RootFS2";
+				reg = <0x1440000 0xb70000>;
+			};
+
+			partition@1fb0000 {
+				label = "glbcfg";
+				reg = <0x1fb0000 0x10000>;
+				read-only;
+			};
+
+			partition@1fc0000 {
+				label = "board_data";
+				reg = <0x1fc0000 0x10000>;
+				read-only;
+			};
+
+			partition@1fd0000 {
+				label = "glbcfg2";
+				reg = <0x1fd0000 0x10000>;
+				read-only;
+			};
+
+			partition@1fe0000 {
+				label = "board_data2";
+				reg = <0x1fe0000 0x10000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&xhci {
+	status = "disabled";
+};
+
+&switch0 {
+	ports {
+		port@1 {
+			status = "okay";
+			label = "swp1";
+		};
+	};
+};
+
+&gmac1 {
+	status = "okay";
+	label = "swp0";
+	phy-handle = <&ethphy0>;
+};
+
+&mdio {
+	ethphy0: ethernet-phy@0 {
+		reg = <0>;
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie0 {
+	mt76@0,0 {
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x0000>;
+	};
+};
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index ca3766365c..9d01399c5c 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -187,6 +187,31 @@ define Device/ampedwireless_ally-00x19k
 endef
 TARGET_DEVICES += ampedwireless_ally-00x19k
 
+define Device/arcadyan_we420223-99
+  $(Device/dsa-migration)
+  $(Device/uimage-lzma-loader)
+  DEVICE_VENDOR := Arcadyan
+  DEVICE_MODEL := WE420223-99
+  DEVICE_ALT0_VENDOR := KPN
+  DEVICE_ALT0_MODEL := Experia WiFi
+  IMAGE_SIZE := 32128k
+  KERNEL_SIZE := 4352k
+  UBINIZE_OPTS := -E 5
+  BLOCKSIZE := 64k
+  PAGESIZE := 1
+  SUBPAGESIZE := 1
+  VID_HDR_OFFSET := 64
+  KERNEL := kernel-bin | append-dtb | lzma | loader-kernel | \
+	uImage none | arcadyan-trx 0x746f435d
+  KERNEL_INITRAMFS := kernel-bin | append-dtb | lzma | loader-kernel | \
+	uImage none
+  IMAGES += factory.trx
+  IMAGE/factory.trx := append-kernel | pad-to $$(KERNEL_SIZE) | append-ubi | check-size
+  IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+  DEVICE_PACKAGES := kmod-mt7615-firmware
+endef
+TARGET_DEVICES += arcadyan_we420223-99
+
 define Device/asiarf_ap7621-001
   $(Device/dsa-migration)
   IMAGE_SIZE := 16000k
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
index c5196c1448..ddbbf9891d 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
@@ -8,6 +8,9 @@ ramips_setup_interfaces()
 	local board="$1"
 
 	case $board in
+	arcadyan,we420223-99)
+		ucidef_set_interface_lan "swp0 swp1"
+		;;
 	ampedwireless,ally-00x19k|\
 	asus,rp-ac56|\
 	asus,rp-ac87|\
@@ -150,6 +153,11 @@ ramips_setup_macs()
 		wan_mac=$(mtd_get_mac_ascii hwconfig HW.WAN.MAC.Address)
 		label_mac=$lan_mac
 		;;
+	arcadyan,we420223-99)
+		label_mac=$(mtd_get_mac_ascii board_data mac)
+		lan_mac=$label_mac
+		ucidef_set_network_device_mac eth0 $(macaddr_add "$label_mac" 3)
+	;;
 	asus,rt-ac65p|\
 	asus,rt-ac85p)
 		wan_mac=$(mtd_get_mac_ascii u-boot-env et1macaddr)
diff --git a/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac b/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
index 079f07956d..45bee29d24 100644
--- a/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
+++ b/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
@@ -10,6 +10,15 @@ PHYNBR=${DEVPATH##*/phy}
 board=$(board_name)
 
 case "$board" in
+	arcadyan,we420223-99)
+		if [ "$PHYNBR" = "0" ]; then
+			mac24=$(macaddr_add "$(get_mac_label)" "0xf00001")
+			echo -n "$mac24" > /sys${DEVPATH}/macaddress
+		elif [ "$PHYNBR" = "1" ]; then
+			mac5=$(macaddr_add "$(get_mac_label)" 1)
+			echo -n "$mac5" > /sys${DEVPATH}/macaddress
+		fi
+		;;
 	beeline,smartbox-flash)
 		hw_mac_addr=$(macaddr_add $(mtd_get_mac_encrypted_arcadyan "board_data") 1)
 		[ "$PHYNBR" = "0" ] && echo -n "$hw_mac_addr" > /sys${DEVPATH}/macaddress
diff --git a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
index 830061231d..07c6b80d7b 100755
--- a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
@@ -52,6 +52,7 @@ platform_do_upgrade() {
 	case "$board" in
 	ampedwireless,ally-00x19k|\
 	ampedwireless,ally-r1900k|\
+	arcadyan,we420223-99|\
 	asus,rt-ac65p|\
 	asus,rt-ac85p|\
 	asus,rt-ax53u|\