ramips: add support for Keenetic KN-1613

Keenetic KN-1613 is a 2.4/5 Ghz band 11ac (Wi-Fi 5) router, based on MT7628AN.

Specification:
- System-On-Chip: MT7628AN
- CPU/Speed: 580 MHz
- Flash-Chip: Winbond w25q256
- Flash size: 32768 KiB
- RAM: 128 MiB
- 4x 10/100 Mbps Ethernet
- 2x external, non-detachable antennas
- UART (J1) header on PCB (115200 8n1)
- Wireless No1 (2T2R): SoC Built-in 2.4 GHz 802.11bgn
- Wireless No2 (2T2R): MT7613BE 5 GHz 802.11ac
- 4x LED, 2x button, 1x mode switch

Notes:
- The device supports dual boot mode
- The firmware partitions were concatinated into one
- The FN button led indicator has been reassigned as the 2.4GHz
  wifi indicator.

Flash instruction:
The only way to flash OpenWrt image is to use tftp recovery mode in U-Boot:

1. Configure PC with static IP 192.168.1.2/24 and tftp server.
2. Rename "openwrt-ramips-mt76x8-keenetic_kn-1613-squashfs-factory.bin"
   to "KN-1613_recovery.bin" and place it in tftp server directory.
3. Connect PC with one of LAN ports, press the reset button, power up
   the router and keep button pressed until power led start blinking.
4. Router will download file from server, write it to flash and reboot.

Signed-off-by: Maxim Anisimov <maxim.anisimov.ua@gmail.com>

4 files changed, 246 insertions, 4 deletions

diff --git a/target/linux/ramips/dts/mt7628an_keenetic_kn-1613.dts b/target/linux/ramips/dts/mt7628an_keenetic_kn-1613.dts
new file mode 100644
index 0000000000..4281682503
--- /dev/null
+++ b/target/linux/ramips/dts/mt7628an_keenetic_kn-1613.dts
@@ -0,0 +1,223 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+#include "mt7628an.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "keenetic,kn-1613", "mediatek,mt7628an-soc";
+	model = "Keenetic KN-1613";
+
+	aliases {
+		led-boot = &led_power;
+		led-failsafe = &led_power;
+		led-running = &led_power;
+		led-upgrade = &led_power;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_power: power {
+			label = "green:power";
+			gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+		};
+
+		internet {
+			label = "green:internet";
+			gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
+		};
+
+		wifi2 {
+			label = "green:wifi2";
+			gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+
+		wifi5 {
+			label = "green:wifi5";
+			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy1tpt";
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		fn {
+			label = "fn";
+			gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		reset {
+			label = "reset";
+			gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&gpio 37 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+
+	virtual_flash {
+		compatible = "mtd-concat";
+		devices = <&firmware1 &firmware2>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				compatible = "denx,uimage";
+				label = "firmware";
+				reg = <0x0 0x1ec0000>;
+			};
+		};
+	};
+};
+
+&state_default {
+	gpio {
+		groups = "i2s", "i2c", "gpio", "refclk", "wdt", "wled_an";
+		function = "gpio";
+	};
+};
+
+&usbphy {
+	status = "disabled";
+};
+
+&ehci {
+	status = "disabled";
+};
+
+&ohci {
+	status = "disabled";
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <32000000>;
+
+		partitions: partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x0 0x30000>;
+				read-only;
+			};
+
+			partition@30000 {
+				label = "u-config";
+				reg = <0x30000 0x10000>;
+				read-only;
+			};
+
+			factory: partition@40000 {
+				label = "rf-eeprom";
+				reg = <0x40000 0x10000>;
+				read-only;
+			};
+
+			firmware1: partition@50000 {
+				label = "firmware_1";
+				reg = <0x50000 0xf60000>;
+			};
+
+			partition@fb0000 {
+				label = "config_1";
+				reg = <0xfb0000 0x40000>;
+				read-only;
+			};
+
+			partition@ff0000 {
+				label = "dump";
+				reg = <0xff0000 0x10000>;
+				read-only;
+			};
+
+			partition@1000000 {
+				label = "u-state";
+				reg = <0x1000000 0x30000>;
+				read-only;
+			};
+
+			partition@1030000 {
+				label = "u-config_res";
+				reg = <0x1030000 0x10000>;
+				read-only;
+			};
+
+			partition@1040000 {
+				label = "rf-eeprom_res";
+				reg = <0x1040000 0x10000>;
+				read-only;
+			};
+
+			firmware2: partition@1050000 {
+				label = "firmware_2";
+				reg = <0x1050000 0xf60000>;
+			};
+
+			partition@1fb0000 {
+				label = "config_2";
+				reg = <0x1fb0000 0x40000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&ethernet {
+	nvmem-cells = <&macaddr_factory_4>;
+	nvmem-cell-names = "mac-address";
+};
+
+&esw {
+	mediatek,portmap = <0x3e>;
+};
+
+&wmac {
+	status = "okay";
+
+	mediatek,mtd-eeprom = <&factory 0x0>;
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie0 {
+	wifi@0,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x0400>;
+		ieee80211-freq-limit = <5000000 6000000>;
+	};
+};
+
+&factory {
+	compatible = "nvmem-cells";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	macaddr_factory_4: macaddr@4 {
+		reg = <0x4 0x6>;
+	};
+};
diff --git a/target/linux/ramips/image/mt76x8.mk b/target/linux/ramips/image/mt76x8.mk
index a77f1c97e1..9db2d9e60c 100644
--- a/target/linux/ramips/image/mt76x8.mk
+++ b/target/linux/ramips/image/mt76x8.mk
@@ -320,6 +320,18 @@ define Device/jotale_js76x8-32m
 endef
 TARGET_DEVICES += jotale_js76x8-32m
 
+define Device/keenetic_kn-1613
+  BLOCKSIZE := 64k
+  IMAGE_SIZE := 31488k
+  DEVICE_VENDOR := Keenetic
+  DEVICE_MODEL := KN-1613
+  DEVICE_PACKAGES := kmod-mt7615e kmod-mt7663-firmware-ap
+  IMAGES += factory.bin
+  IMAGE/factory.bin := $$(sysupgrade_bin) | pad-to $$$$(BLOCKSIZE) | \
+	check-size | zyimage -d 0x801613 -v "KN-1613"
+endef
+TARGET_DEVICES += keenetic_kn-1613
+
 define Device/kroks_kndrt31r16
   IMAGE_SIZE := 16064k
   DEVICE_VENDOR := Kroks
diff --git a/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds b/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds
index 66628cea09..d972762dad 100644
--- a/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds
@@ -53,6 +53,9 @@ hiwifi,hc5661a|\
 hiwifi,hc5761a)
 	ucidef_set_led_switch "internet" "internet" "blue:internet" "switch0" "0x10"
 	;;
+keenetic,kn-1613)
+	ucidef_set_led_switch "internet" "internet" "green:internet" "switch0" "0x01"
+	;;
 mediatek,linkit-smart-7688)
 	ucidef_set_led_wlan "wifi" "wifi" "orange:wifi" "phy0tpt"
 	;;
diff --git a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
index 26415e0fa6..7570999a4e 100644
--- a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
@@ -118,6 +118,11 @@ ramips_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"0:lan" "1:lan" "2:lan" "6@eth0"
 		;;
+	keenetic,kn-1613|\
+	motorola,mwr03)
+		ucidef_add_switch "switch0" \
+			"1:lan" "2:lan" "3:lan" "0:wan" "6@eth0"
+		;;
 	kroks,kndrt31r19)
 		ucidef_add_switch "switch0" \
 			"0:lan" "6@eth0"
@@ -129,10 +134,6 @@ ramips_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"0:lan:1" "1:lan:2" "2:lan:3" "3:lan:4" "4:wan" "6@eth0"
 		;;
-	motorola,mwr03)
-		ucidef_add_switch "switch0" \
-			"1:lan" "2:lan" "3:lan" "0:wan" "6@eth0"
-		;;
 	netgear,r6020|\
 	netgear,r6080|\
 	netgear,r6120|\
@@ -252,6 +253,9 @@ ramips_setup_macs()
 	totolink,lr1200)
 		wan_mac=$(mtd_get_mac_binary factory 0x2e)
 		;;
+	keenetic,kn-1613)
+		wan_mac=$(mtd_get_mac_binary rf-eeprom 0x28)
+		;;
 	linksys,e5400)
 		wan_mac=$(mtd_get_mac_binary factory 0x22)
 		;;