ramips: add new device ZyXEL Keenetic as kn

This device exactly same as NBG-419N but with USB port and USB Led.

Specification:

- SoC: Ralink RT3052 (MIPS24Kc) @384MHz
- RAM: 32 MiB
- Flash: 8 MiB
- WLAN: WiSoC 2T2R/300Mbps (2.4GHz)
- LAN: 4x100M
- WAN: 1x100M
- USB: 1x2.0

Installation via serial console (57600 8N1) from TFTP server
 - rename the firmware to something shorter, for example
   "sysupgrade.bin" (max. 32 chars)
 - copy firmware TFTP server's directory
 - when you power on device, and see U-Boot log, immediatly push "2"
   once.
 - You will see this message:
     2: System Load Linux Kernel then write to Flash via TFTP.
        Warning!! Erase Linux in Flash then burn new one. Are you sure?
 - Push "y", and enter: device IP, then TFTP server's IP, and then
   image firmware file name.

The firmware will be downloaded within ~30 seconds and flashed to the
device (It will take about 2 minutes).

Signed-off-by: Alexey Belyaev <spider@spider.vc>
[squash commits, compact commit message, fix compatible string, remove
superfluous pinmuxes]
Signed-off-by: Mathias Kresin <dev@kresin.me>

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

@@ -222,6 +222,11 @@ ht-tm02)
 	ucidef_set_led_netdev "eth" "Ethernet" "$board:green:lan" "eth0"
 	set_wifi_led "$board:blue:wlan"
 	;;
+kn|\
+nbg-419n2)
+	set_usb_led "$board:green:usb"
+	set_wifi_led "rt2800pci-phy0::radio"
+	;;
 kn_rc|\
 kn_rf|\
 kng_rc)
@@ -265,10 +270,6 @@ mzk-ex750np)
 na930)
 	set_usb_led "$board:blue:status"
 	;;
-nbg-419n2)
-	set_usb_led "$board:green:usb"
-	set_wifi_led "rt2800pci-phy0::radio"
-	;;
 newifi-d1)
 	set_usb_led "$board:red:status"
 	;;

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

@@ -84,6 +84,7 @@ ramips_setup_interfaces()
 	hc5661a|\
 	hc5962|\
 	hlk-rm04|\
+	kn|\
 	kn_rc|\
 	mac1200rv2|\
 	miwifi-mini|\

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

@@ -24,6 +24,7 @@ get_status_led() {
 	e1700|\
 	ex3700|\
 	fonera20n|\
+	kn|\
 	kn_rc|\
 	kn_rf|\
 	kng_rc|\

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

@@ -670,6 +670,9 @@ ramips_board_detect() {
 	*"ZBT-WR8305RT")
 		name="zbt-wr8305rt"
 		;;
+	*"ZyXEL Keenetic")
+		name="kn"
+		;;
 	*"ZyXEL Keenetic Omni")
 		name="kn_rc"
 		;;

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

@@ -76,6 +76,7 @@ platform_check_image() {
 	jhr-n805r|\
 	jhr-n825r|\
 	jhr-n926r|\
+	kn|\
 	kn_rc|\
 	kn_rf|\
 	kng_rc|\

target/linux/ramips/dts/kn.dts

@@ -0,0 +1,113 @@
+/dts-v1/;
+
+#include "rt3050.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "zyxel,keenetic", "ralink,rt3052-soc";
+	model = "ZyXEL Keenetic";
+
+	cfi@1f000000 {
+		compatible = "cfi-flash";
+		reg = <0x1f000000 0x800000>;
+		bank-width = <2>;
+		device-width = <2>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partition@0 {
+			label = "u-boot";
+			reg = <0x0 0x30000>;
+			read-only;
+		};
+
+		partition@30000 {
+			label = "u-boot-env";
+			reg = <0x30000 0x10000>;
+			read-only;
+		};
+
+		factory: partition@40000 {
+			label = "factory";
+			reg = <0x40000 0x10000>;
+			read-only;
+		};
+
+		partition@50000 {
+			label = "firmware";
+			reg = <0x50000 0x3b0000>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		power {
+			label = "kn:green:power";
+			gpios = <&gpio0 9 GPIO_ACTIVE_LOW>;
+		};
+
+		usb {
+			label = "kn:green:usb";
+			gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
+		};
+
+		wps {
+			label = "kn:green:wps";
+			gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		rfkill {
+			label = "rfkill";
+			gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>;
+			linux,code = <KEY_RFKILL>;
+			linux,input-type = <EV_SW>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "uartf";
+			ralink,function = "gpio";
+		};
+	};
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0x28>;
+};
+
+&esw {
+	mediatek,portmap = <0x2f>;
+};
+
+&wmac {
+	ralink,mtd-eeprom = <&factory 0>;
+};
+
+&otg {
+	status = "okay";
+};

target/linux/ramips/image/rt305x.mk

@@ -850,3 +850,12 @@ define Device/xdxrn502j
   DEVICE_TITLE := XDX RN502J
 endef
 TARGET_DEVICES += xdxrn502j
+
+define Device/kn
+  DTS := kn
+  BLOCKSIZE := 64k
+  IMAGE_SIZE := $(ralink_default_fw_size_4M)
+  DEVICE_TITLE := ZyXEL Keenetic
+  DEVICE_PACKAGES := kmod-usb-core kmod-usb2 kmod-usb-ehci kmod-usb-ledtrig-usbport
+endef
+TARGET_DEVICES += kn