ramips: add support for D-Link DWR-116-A1/2

The DWR-116-A1/2 Wireless Router is based on the MT7620N SoC.

Specification:

  MediaTek MT7620N (580 Mhz)
  32 MB of RAM
  8 MB of FLASH
  802.11bgn radio
  5x 10/100 Mbps Ethernet (1 WAN and 4 LAN)
  2x external, non-detachable antennas
  UART (J1 in A1, JP1 in A2) header on PCB (57600 8n1)
  6x LED (GPIO-controlled), 2x button
  JBOOT bootloader

Known issues:
WAN LED is drived by uartl tx pin. I decide to use this pin as
uartlite tx pin.

Installation:
Apply factory image via http web-gui.

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

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

@@ -158,6 +158,7 @@ dir-615-h1)
 	set_wifi_led "rt2800pci-phy0::radio"
 	;;
 dir-620-d1|\
+dlink,dwr-116-a1|\
 mzk-ex300np)
 	set_wifi_led "$boardname:green:wifi"
 	;;

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

@@ -80,6 +80,7 @@ ramips_setup_interfaces()
 	dir-320-b1|\
 	dir-610-a1|\
 	dir-615-h1|\
+	dlink,dwr-116-a1|\
 	ew1200|\
 	firewrt|\
 	hc5661a|\
@@ -428,6 +429,10 @@ ramips_setup_macs()
 		lan_mac=$(mtd_get_mac_ascii factory lanmac)
 		wan_mac=$(mtd_get_mac_ascii factory wanmac)
 		;;
+	dlink,dwr-116-a1)
+		wan_mac=$(jboot_config_read -m -i $(find_mtd_part "config") -o 0xE000)
+		lan_mac=$(macaddr_add "$wan_mac" 1)
+		;;
 	e1700)
 		wan_mac=$(mtd_get_mac_ascii config WAN_MAC_ADDR)
 		;;

target/linux/ramips/base-files/etc/diag.sh

@@ -93,6 +93,7 @@ get_status_led() {
 	dir-620-a1|\
 	dir-620-d1|\
 	dwr-512-b|\
+	dlink,dwr-116-a1|\
 	gb-pc1|\
 	gnubee,gb-pc2|\
 	hpm|\

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

@@ -19,6 +19,19 @@ rt2x00_eeprom_extract() {
 		rt2x00_eeprom_die "failed to extract from $mtd"
 }
 
+jboot_eeprom_extract() {
+	local part=$1
+	local offset=$2
+	local mtd
+
+	mtd=$(find_mtd_part $part)
+	[ -n "$mtd" ] || \
+		rt2x00_eeprom_die "no mtd device found for partition $part"
+
+	jboot_config_read -i $mtd -o $offset -e /lib/firmware/$FIRMWARE  2>/dev/null || \
+		rt2x00_eeprom_die "failed to extract from $mtd"
+}
+
 rt2x00_eeprom_set_macaddr() {
 	local macaddr=$1
 
@@ -41,6 +54,12 @@ board=$(board_name)
 case "$FIRMWARE" in
 "soc_wmac.eeprom")
 	case $board in
+	dlink,dwr-116-a1)
+		wan_mac=$(jboot_config_read -m -i $(find_mtd_part "config") -o 0xE000)
+		wifi_mac=$(macaddr_add "$wan_mac" 1)
+		jboot_eeprom_extract "config" 0xE000
+		rt2x00_eeprom_set_macaddr $wifi_mac
+		;;
 	tiny-ac)
 		wifi_mac=$(mtd_get_mac_ascii u-boot-env INIC_MAC_ADDR)
 		rt2x00_eeprom_extract "factory" 0 512

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

@@ -270,6 +270,13 @@ platform_check_image() {
 		}
 		return 0
 		;;
+	dlink,dwr-116-a1)
+		[ "$magic" != "0404242b" ] && {
+			echo "Invalid image type."
+			return 1
+		}
+		return 0
+		;;
 	hc5962|\
 	mir3g|\
 	r6220|\

target/linux/ramips/dts/DWR-116-A1.dts

@@ -0,0 +1,104 @@
+/dts-v1/;
+
+#include "mt7620n.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "dlink,dwr-116-a1", "ralink,mt7620n-soc";
+	model = "D-Link DWR-116 A1/A2";
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		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";
+
+		status {
+			label = "dwr-116-a1:green:status";
+			gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
+		};
+
+		wifi {
+			label = "dwr-116-a1:green:wifi";
+			gpios = <&gpio3 0 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio3 {
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+
+	m25p80@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+
+		partition@0 {
+			label = "jboot";
+			reg = <0x0 0x10000>;
+			read-only;
+		};
+
+		partition@10000 {
+			label = "firmware";
+			reg = <0x10000 0x7e0000>;
+		};
+
+		config: partition@7f0000 {
+			label = "config";
+			reg = <0x7f0000 0x10000>;
+			read-only;
+		};
+	};
+};
+
+&ehci {
+	status = "okay";
+};
+
+&ohci {
+	status = "okay";
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		default {
+			ralink,group = "i2c", "wled";
+			ralink,function = "gpio";
+		};
+	};
+};
+
+&ethernet {
+	mediatek,portmap = "llllw";
+	pinctrl-names = "default";
+	pinctrl-0 = <&ephy_pins>;
+};

target/linux/ramips/image/Makefile

@@ -111,6 +111,26 @@ define Build/wrg-header
 	mv $@.new $@
 endef
 
+# combine kernel and rootfs into one image
+# mkdlinkfw <type> <optional extra arguments to mkdlinkfw binary>
+
+define Build/mkdlinkfw
+	-$(STAGING_DIR_HOST)/bin/mkdlinkfw \
+		-k $(IMAGE_KERNEL) \
+		-r $(IMAGE_ROOTFS) \
+		-o $@ \
+		-s $(DLINK_FIRMWARE_SIZE)
+endef
+
+define Build/mkdlinkfw-factory
+	-$(STAGING_DIR_HOST)/bin/mkdlinkfw \
+		-m $(DLINK_ROM_ID) -f $(DLINK_FAMILY_MEMBER) \
+		-F $@ \
+		-o $@.new \
+		-s $(DLINK_FIRMWARE_SIZE)
+	mv $@.new $@
+endef
+
 #
 # The real magic happens inside these templates
 #

target/linux/ramips/image/mt7620.mk

@@ -2,7 +2,8 @@
 # MT7620A Profiles
 #
 
-DEVICE_VARS += TPLINK_FLASHLAYOUT TPLINK_HWID TPLINK_HWREV TPLINK_HWREVADD TPLINK_HVERSION
+DEVICE_VARS += TPLINK_FLASHLAYOUT TPLINK_HWID TPLINK_HWREV TPLINK_HWREVADD TPLINK_HVERSION \
+	DLINK_ROM_ID DLINK_FAMILY_MEMBER DLINK_FIRMWARE_SIZE
 
 define Build/elecom-header
 	cp $@ $(KDIR)/v_0.0.0.bin
@@ -147,6 +148,20 @@ define Device/dir-810l
 endef
 TARGET_DEVICES += dir-810l
 
+define Device/dlink_dwr-116-a1
+  DTS := DWR-116-A1
+  DEVICE_TITLE := D-Link DWR-116 A1/A2
+  DEVICE_PACKAGES := kmod-usb2 jboot-tools
+  DLINK_ROM_ID := DLK6E3803001
+  DLINK_FAMILY_MEMBER := 0x6E38
+  DLINK_FIRMWARE_SIZE := 0x7E0000
+  KERNEL := $(KERNEL_DTB)
+  IMAGES += factory.bin
+  IMAGE/sysupgrade.bin := mkdlinkfw | pad-rootfs | append-metadata
+  IMAGE/factory.bin := mkdlinkfw | pad-rootfs | mkdlinkfw-factory
+endef
+TARGET_DEVICES += dlink_dwr-116-a1
+
 define Device/e1700
   DTS := E1700
   IMAGES += factory.bin

target/linux/ramips/mt7620/config-4.14

@@ -164,6 +164,7 @@ CONFIG_MTD_SPI_NOR=y
 CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y
 CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT=16384
 CONFIG_MTD_SPLIT_FIRMWARE=y
+CONFIG_MTD_SPLIT_JIMAGE_FW=y
 CONFIG_MTD_SPLIT_SEAMA_FW=y
 CONFIG_MTD_SPLIT_TPLINK_FW=y
 CONFIG_MTD_SPLIT_UIMAGE_FW=y

target/linux/ramips/mt7620/config-4.9

@@ -143,6 +143,7 @@ CONFIG_MTD_SPI_NOR=y
 CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y
 CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT=16384
 CONFIG_MTD_SPLIT_FIRMWARE=y
+CONFIG_MTD_SPLIT_JIMAGE_FW=y
 CONFIG_MTD_SPLIT_SEAMA_FW=y
 CONFIG_MTD_SPLIT_TPLINK_FW=y
 CONFIG_MTD_SPLIT_UIMAGE_FW=y