ramips: add support for Lava LR-25G001

The Lava LR-25G001 Wireless Router is based on the MT7620A SoC.

Specification:

- MediaTek MT7620A (580 Mhz)
- 64 MB of RAM
- 16 MB of FLASH
- 1x 802.11bgn radio
- 1x 802.11ac radio (MT7610EN)
- 5x 10/100/1000 Mbps AR8337 Switch (1 WAN AND 4 LAN)
- 2x external, detachable antennas
- 1x USB 2.0
- UART (J3) header on PCB (57600 8n1)
- 8x LED (3x GPIO-controlled), 2x button
- JBOOT bootloader

Known issues:
- Work only three Gigabit ports (3/5, 1 WAN and 2LAN)

Installation:
Apply factory image via http web-gui or JBOOT recovery page

How to revert to OEM firmware:
- push the reset button and turn on the power. Wait until LED start
  blinking (~10sec.)
- upload original factory image via JBOOT http (IP: 192.168.123.254)

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>

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

@@ -195,6 +195,10 @@ kn_rf|\
 kng_rc)
 	set_wifi_led "$boardname:green:wifi"
 	;;
+lava,lr-25g001)
+	ucidef_set_led_netdev "wlan2g" "WiFi 2.4GHz" "$boardname:green:wlan2g" "wlan1"
+	ucidef_set_led_netdev "wlan5g" "WiFi 5GHz" "$boardname:green:wlan5g" "wlan0"
+	;;
 linkits7688)
 	ucidef_set_led_wlan "wifi" "wifi" "linkit-smart-7688:orange:wifi" "phy0tpt"
 	;;

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

@@ -353,6 +353,7 @@ ramips_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"4:lan" "6@eth0"
 		;;
+	lava,lr-25g001|\
 	tew-691gr|\
 	tew-692gr|\
 	wlr-6000)
@@ -475,7 +476,8 @@ ramips_setup_macs()
 		;;
 	dlink,dwr-116-a1|\
 	dlink,dwr-118-a2|\
-	dlink,dwr-921-c1)
+	dlink,dwr-921-c1|\
+	lava,lr-25g001)
 		wan_mac=$(jboot_config_read -m -i $(find_mtd_part "config") -o 0xE000)
 		lan_mac=$(macaddr_add "$wan_mac" 1)
 		;;

target/linux/ramips/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom

@@ -56,7 +56,8 @@ case "$FIRMWARE" in
 	case $board in
 	dlink,dwr-116-a1|\
 	dlink,dwr-118-a2|\
-	dlink,dwr-921-c1)
+	dlink,dwr-921-c1|\
+	lava,lr-25g001)
 		wan_mac=$(jboot_config_read -m -i $(find_mtd_part "config") -o 0xE000)
 		wifi_mac=$(macaddr_add "$wan_mac" 1)
 		jboot_eeprom_extract "config" 0xE000

target/linux/ramips/base-files/lib/upgrade/platform.sh

@@ -295,7 +295,8 @@ platform_check_image() {
 	dlink,dwr-116-a1|\
 	dlink,dwr-118-a2|\
 	dlink,dwr-921-c1|\
-	dwr-512-b)
+	dwr-512-b|\
+	lava,lr-25g001)
 		[ "$magic" != "0404242b" ] && {
 			echo "Invalid image type."
 			return 1

target/linux/ramips/dts/LR-25G001.dts

@@ -0,0 +1,182 @@
+/dts-v1/;
+
+#include "mt7620a.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "lava,lr-25g001", "ralink,mt7620a-soc";
+	model = "LAVA LR-25G001";
+
+	aliases {
+		led-boot = &led_status;
+		led-failsafe = &led_status;
+		led-running = &led_status;
+		led-upgrade = &led_status;
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		poll-interval = <20>;
+
+		wps {
+			label = "wps";
+			gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		led_status: status {
+			label = "lava,lr-25g001:green:status";
+			gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
+		};
+
+		wifi2g {
+			label = "lava,lr-25g001:green:wifi2g";
+			gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
+		};
+
+		wifi5g {
+			label = "lava,lr-25g001:green:wifi5g";
+			gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio_export {
+		compatible = "gpio-export";
+		#size-cells = <0>;
+
+		usbpower {
+			gpio-export,name = "usbpower";
+			gpio-export,output = <1>;
+			gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+
+	mx25l12805d@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "jboot";
+				reg = <0x0 0x10000>;
+				read-only;
+			};
+
+			partition@10000 {
+				label = "firmware";
+				reg = <0x10000 0xfe0000>;
+			};
+
+			config: partition@ff0000 {
+				label = "config";
+				reg = <0xff0000 0x10000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&ehci {
+	status = "okay";
+};
+
+&ohci {
+	status = "okay";
+};
+
+&ethernet {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgmii1_pins &rgmii2_pins &mdio_pins>;
+
+	port@5 {
+		status = "okay";
+		phy-mode = "rgmii";
+		mediatek,fixed-link = <1000 1 1 1>;
+	};
+
+	mdio-bus {
+		status = "okay";
+		mediatek,mdio-mode = <1>;
+
+		phy0: ethernet-phy@0 {
+			reg = <0>;
+			phy-mode = "rgmii";
+			qca,ar8327-initvals = <
+				0x04 0x87300000 /* PORT0 PAD MODE CTRL */
+				0x0c 0x00000000 /* PORT6 PAD MODE CTRL */
+				0x7c 0x0000007e /* PORT0_STATUS */
+				0x94 0x00000000 /* PORT6_STATUS */
+
+			>;
+		};
+
+		phy1: ethernet-phy@1 {
+			reg = <1>;
+			phy-mode = "rgmii";
+		};
+
+		phy2: ethernet-phy@2 {
+			reg = <2>;
+			phy-mode = "rgmii";
+		};
+
+		phy3: ethernet-phy@3 {
+			reg = <3>;
+			phy-mode = "rgmii";
+		};
+
+		phy4: ethernet-phy@4 {
+			reg = <4>;
+			phy-mode = "rgmii";
+		};
+
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie0 {
+	mt76x0e@0,0 {
+		reg = <0x0000 0 0 0 0>;
+		mtd-mac-address = <&config 0xe07e>;
+		mtd-mac-address-increment = <(2)>;
+		mediatek,mtd-eeprom = <&config 0xe08a>;
+	};
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "uartf", "i2c";
+			ralink,function = "gpio";
+		};
+	};
+};

target/linux/ramips/image/mt7620.mk

@@ -352,6 +352,21 @@ define Device/microwrt
 endef
 TARGET_DEVICES += microwrt
 
+define Device/lava_lr-25g001
+  DTS := LR-25G001
+  DEVICE_TITLE := LAVA LR-25G001
+  DLINK_ROM_ID := LVA6E3804001
+  DLINK_FAMILY_MEMBER := 0x6E38
+  DLINK_FIRMWARE_SIZE := 0xFE0000
+  KERNEL := $(KERNEL_DTB)
+  IMAGES += factory.bin
+  IMAGE/sysupgrade.bin := mkdlinkfw | pad-rootfs | append-metadata
+  IMAGE/factory.bin := mkdlinkfw | pad-rootfs | mkdlinkfw-factory
+  DEVICE_PACKAGES := jboot-tools kmod-usb2 kmod-mt76 kmod-mt76x0-common \
+					kmod-mt76x0e
+endef
+TARGET_DEVICES += lava_lr-25g001
+
 define Device/miwifi-mini
   DTS := MIWIFI-MINI
   IMAGE_SIZE := $(ralink_default_fw_size_16M)

target/linux/ramips/mt7620/config-4.14

@@ -1,3 +1,4 @@
+CONFIG_AR8216_PHY=y
 CONFIG_ARCH_BINFMT_ELF_STATE=y
 CONFIG_ARCH_CLOCKSOURCE_DATA=y
 CONFIG_ARCH_DISCARD_MEMBLOCK=y
@@ -57,6 +58,7 @@ CONFIG_DTB_RT_NONE=y
 # CONFIG_DTB_VOCORE2 is not set
 CONFIG_DTC=y
 CONFIG_EARLY_PRINTK=y
+CONFIG_ETHERNET_PACKET_MANGLE=y
 CONFIG_FIXED_PHY=y
 CONFIG_GENERIC_ATOMIC64=y
 CONFIG_GENERIC_CLOCKEVENTS=y