ramips: add support for TP-Link Archer C5 v4

TP-Link Archer C5 v4 is a dual band router with 5 GbE ports
Advertised as AC1200 for its 867Mbps (2x2) 5GHz band
and 300 Mbps (2x2) 2.4GHz band.

Specs:
- SoC: MediaTek MT7620A
- Ethernet: 5x GbE ports (Realtek RTL8367S)
- Wireless 2.4GHz: MediaTek MT7620A
- Wireless 5GHz: MediaTek MT7612E
- RAM: 64MiB
- ROM: 8MiB (GD25Q64CSIG)
- 1 USB 2.0 port
- 2 Buttons (WPS and reset)
- 8 LEDs

Flash instructions:
Currently one has to install OpenWrt only via the serial console

1. Rename the factory.bin to to test.bin
2. start a TFTP server from IP address 192.168.0.225 and serve the image named test.bin
3. connect your device to the LAN port
4. power up the router and press 4 on the console to stop the boot process.
5. enter the following commands on the router console
	tftp 0x80060000 test.bin
	erase tplink 0x20000 0x7a0000
	cp.b 0x80060000 0x20000 0x7a0000
	reset

Signed-off-by: DENG Qingfang <[email protected]>
[Update leds, add fast-read]
Signed-off-by: Gaspare Bruno <[email protected]>
[Rebuilt version based on mt7620 tplink_archer.dtsi, support for external LNA, remove bad cell count info]
Signed-off-by: Mieczyslaw Nalewaj <[email protected]>

target/linux/ramips/dts/mt7620a_tplink_archer-c5-v4.dts

@@ -0,0 +1,127 @@
+#include <dt-bindings/leds/common.h>
+
+#include "mt7620a_tplink_archer.dtsi"
+
+/ {
+	compatible = "tplink,archer-c5-v4", "ralink,mt7620a-soc";
+	model = "TP-Link Archer C5 v4";
+
+	aliases {
+		led-boot = &led_power;
+		led-failsafe = &led_power;
+		led-running = &led_power;
+		led-upgrade = &led_power;
+		label-mac-device = &ethernet;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_power: led-0 {
+			function = LED_FUNCTION_POWER;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
+		};
+
+		led-1 {
+			function = LED_FUNCTION_WLAN;
+			color = <LED_COLOR_ID_GREEN>;
+			function-enumerator = <2>;
+			gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy1tpt";
+		};
+
+		led-2 {
+			function = LED_FUNCTION_WLAN;
+			color = <LED_COLOR_ID_GREEN>;
+			function-enumerator = <5>;
+			gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+
+		led-3 {
+			function = LED_FUNCTION_WAN;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
+		};
+
+		led-4 {
+			function = LED_FUNCTION_WAN;
+			color = <LED_COLOR_ID_ORANGE>;
+			gpios = <&gpio0 9 GPIO_ACTIVE_LOW>;
+		};
+
+		led-5 {
+			function = LED_FUNCTION_LAN;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&gpio0 8 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-6 {
+			function = LED_FUNCTION_USB;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&gpio0 7 GPIO_ACTIVE_LOW>;
+			trigger-sources = <&ohci_port1>, <&ehci_port1>;
+			linux,default-trigger = "usbport";
+		};
+
+		led-7 {
+			function = LED_FUNCTION_WPS;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	rtl8367s {
+		compatible = "realtek,rtl8367b";
+		cpu_port = <7>;
+		realtek,extif2 = <1 0 1 1 1 1 1 1 2>;
+		mii-bus = <&mdio0>;
+		phy-id = <29>;
+	};
+};
+
+&spi0 {
+	flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+	};
+};
+
+&state_default {
+	gpio {
+		groups = "i2c", "uartf", "ephy", "rgmii2";
+		function = "gpio";
+	};
+};
+
+&ethernet {
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgmii1_pins &mdio_pins>;
+
+	port@5 {
+		status = "okay";
+		mediatek,fixed-link = <1000 1 1 1>;
+		phy-mode = "rgmii";
+	};
+
+	mdio0: mdio-bus {
+		status = "okay";
+		reset-gpios = <&gpio2 20 GPIO_ACTIVE_LOW>;
+		reset-delay-us = <10000>;
+	};
+};
+
+&wmac {
+	pinctrl-names = "default", "pa_gpio";
+	pinctrl-0 = <&pa_pins>;
+	pinctrl-1 = <&pa_gpio_pins>;
+
+	nvmem-cells = <&eeprom_radio_0>, <&macaddr_rom_f100 0>;
+	nvmem-cell-names = "eeprom", "mac-address";
+};
+
+&wifi {
+	nvmem-cells = <&eeprom_radio_8000>, <&macaddr_rom_f100 2>;
+	nvmem-cell-names = "eeprom", "mac-address";
+};

target/linux/ramips/image/mt7620.mk

@@ -1214,6 +1214,23 @@ define Device/tplink_archer-c2-v1
 endef
 TARGET_DEVICES += tplink_archer-c2-v1
 
+define Device/tplink_archer-c5-v4
+  $(Device/tplink-v2)
+  SOC := mt7620a
+  IMAGE_SIZE := 7808k
+  TPLINK_FLASHLAYOUT := 8Mmtk
+  TPLINK_HWID := 0x04da857c
+  TPLINK_HWREV := 0x0c000600
+  TPLINK_HWREVADD := 0x04000000
+  IMAGES += tftp-recovery.bin
+  IMAGE/tftp-recovery.bin := pad-extra 128k | $$(IMAGE/factory.bin)
+  DEVICE_MODEL := Archer C5
+  DEVICE_VARIANT := v4
+  DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci kmod-usb-ledtrig-usbport \
+  kmod-mt76x2 kmod-switch-rtl8367b
+endef
+TARGET_DEVICES += tplink_archer-c5-v4
+
 define Device/tplink_archer-c50-v1
   $(Device/tplink-v2)
   SOC := mt7620a

target/linux/ramips/mt7620/base-files/etc/board.d/01_leds

@@ -225,6 +225,10 @@ tplink,archer-c20i)
 	ucidef_set_led_switch "lan" "lan" "blue:lan" "switch0" "0x1e"
 	ucidef_set_led_switch "wan" "wan" "blue:wan" "switch0" "0x01"
 	;;
+tplink,archer-c5-v4)
+	ucidef_set_led_switch "lan" "lan" "green:lan" "switch1" "0x0f"
+	ucidef_set_led_switch "wan" "wan" "green:wan" "switch1" "0x10"
+	;;
 tplink,archer-c50-v1)
 	ucidef_set_led_switch "lan" "lan" "green:lan" "switch0" "0x1e"
 	ucidef_set_led_switch "wan" "wan" "green:wan" "switch0" "0x01"

target/linux/ramips/mt7620/base-files/etc/board.d/02_network

@@ -235,6 +235,12 @@ ramips_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"1:lan:3" "2:lan:4" "3:lan:1" "4:lan:2" "0:wan" "6@eth0"
 		;;
+	tplink,archer-c5-v4)
+		ucidef_add_switch "switch0"
+		ucidef_add_switch_attr "switch0" "enable" "0"
+		ucidef_add_switch "switch1" \
+			"0:lan:4" "1:lan:3" "2:lan:2" "3:lan:1" "4:wan" "7@eth0"
+		;;
 	tplink,archer-mr200)
 		ucidef_add_switch "switch0" \
 			"0:lan" "1:lan" "2:lan" "3:lan" "6t@eth0"
@@ -407,6 +413,7 @@ ramips_setup_macs()
 	tplink,archer-c2-v1|\
 	tplink,archer-c20-v1|\
 	tplink,archer-c20i|\
+	tplink,archer-c5-v4|\
 	tplink,archer-c50-v1|\
 	tplink,archer-mr200)
 		wan_mac=$(macaddr_add "$(mtd_get_mac_binary rom 0xf100)" 1)