ath79: add support for Netgear WNR2000 v3

This patch adds ath79 support for Netgear WNR2000v3.
Router was previously supported by ar71xx target only.
Note: this is a 4_32 device with limited upgrade capabilities.

Specification
=============
  * Description: Netgear WNR2000 v3
  * Loader: U-boot
  * SOC: Atheros AR7241 (360 MHz)
  * RAM: 32 MiB
  * Flash: 4 MiB (SPI NOR)
	- U-boot binary: 256 KiB
	- U-boot environment: 64 KiB
	- Firmware: 3712 KiB
	- ART: 64 KiB
  * Ethernet: 4 x 10/100 LAN + 1 x 10/100 WAN
  * Wireless: 2.4 GHz b/g/n (Atheros AR9287)
  * USB: no
  * Buttons:
	- Reset
	- WiFi (rfkill)
	- WPS
  * LEDs:
	- Power (amber/green)
	- WAN (amber/green)
	- WLAN (blue)
	- 4 x LAN (amber/green)
	- WPS (green)
  * UART: 4-pin connector JP1, 3.3V (Vcc, TX, RX, GND), 115200 8N1
  * Power supply: DC 12V 1A
  * MAC addresses: LAN on case label, WAN +1, WLAN +2

Installation
============
  * TFTP recovery
  * TFTP via U-boot prompt
  * sysupgrade
  * Web interface

Test build configuration
========================
CONFIG_TARGET_ath79=y
CONFIG_TARGET_ath79_tiny=y
CONFIG_TARGET_ath79_tiny_DEVICE_netgear_wnr2000-v3=y
CONFIG_ALL_KMODS=y
CONFIG_DEVEL=y
CONFIG_CCACHE=y
CONFIG_COLLECT_KERNEL_DEBUG=y
CONFIG_IMAGEOPT=y
CONFIG_KERNEL_DEBUG_INFO=y
CONFIG_KERNEL_DEBUG_KERNEL=y

Signed-off-by: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl>

1 files changed, 207 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/ar7241_netgear_wnr2000-v3.dts b/target/linux/ath79/dts/ar7241_netgear_wnr2000-v3.dts
new file mode 100644
index 0000000000..deb031b353
--- /dev/null
+++ b/target/linux/ath79/dts/ar7241_netgear_wnr2000-v3.dts
@@ -0,0 +1,207 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+#include "ar7241.dtsi"
+
+/ {
+	compatible = "netgear,wnr2000-v3", "qca,ar7241";
+	model = "Netgear WNR2000 v3";
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+	};
+
+	aliases {
+		led-boot = &power_amber;
+		led-failsafe = &power_amber;
+		led-running = &power_green;
+		led-upgrade = &power_amber;
+		label-mac-device = &eth1;
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		wps {
+			label = "wps";
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	ath9k-keys {
+		compatible = "gpio-keys-polled";
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&ath9k 8 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+
+		rfkill {
+			label = "rfkill";
+			linux,code = <KEY_RFKILL>;
+			gpios = <&ath9k 9 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&jtag_disable_pins &switch_led_disable_pins &clks_disable_pins>;
+
+		wan_green {
+			label = "netgear:green:wan";
+			gpios = <&gpio 0 GPIO_ACTIVE_LOW>;
+		};
+
+		wan_amber {
+			label = "netgear:amber:wan";
+			gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
+		};
+
+		lan1_green {
+			label = "netgear:green:lan1";
+			gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+		};
+
+		lan1_amber {
+			label = "netgear:amber:lan1";
+			gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
+		};
+
+		lan2_green {
+			label = "netgear:green:lan2";
+			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+		};
+
+		lan2_amber {
+			label = "netgear:amber:lan2";
+			gpios = <&gpio 6 GPIO_ACTIVE_LOW>;
+		};
+
+		lan3_green {
+			label = "netgear:green:lan3";
+			gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
+		};
+
+		lan3_amber {
+			label = "netgear:amber:lan3";
+			gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
+		};
+
+		lan4_green {
+			label = "netgear:green:lan4";
+			gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
+		};
+
+		lan4_amber {
+			label = "netgear:amber:lan4";
+			gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
+		};
+
+		wps_green {
+			label = "netgear:green:wps";
+			gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	ath9k-leds {
+		compatible = "gpio-leds";
+
+		power_green: power_green {
+			label = "netgear:green:power";
+			gpios = <&ath9k 3 GPIO_ACTIVE_LOW>;
+		};
+
+		power_amber: power_amber {
+			label = "netgear:amber:power";
+			gpios = <&ath9k 2 GPIO_ACTIVE_LOW>;
+			default-state = "keep";
+		};
+
+		wlan_blue {
+			label = "netgear:blue:wlan";
+			gpios = <&ath9k 1 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+	};
+};
+
+&spi {
+	status = "okay";
+	num-cs = <1>;
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x0 0x40000>;
+				read-only;
+			};
+
+			partition@40000 {
+				label = "u-boot-env";
+				reg = <0x40000 0x10000>;
+			};
+
+			partition@50000 {
+				label = "firmware";
+				reg = <0x50000 0x3a0000>;
+				compatible = "netgear,uimage";
+			};
+
+			art: partition@3f0000 {
+				label = "art";
+				reg = <0x3f0000 0x10000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	mtd-mac-address = <&art 0x0>;
+};
+
+&eth1 {
+	status = "okay";
+
+	compatible = "qca,ar7241-eth", "syscon", "simple-mfd";
+	mtd-mac-address = <&art 0x6>;
+};
+
+&pcie {
+	status = "okay";
+
+	ath9k: wifi@0,0 {
+		compatible = "pci168c,002e";
+		reg = <0x0000 0 0 0 0>;
+		mtd-mac-address = <&art 0x0>;
+		mtd-mac-address-increment = <1>;
+		qca,no-eeprom;
+		#gpio-cells = <2>;
+		gpio-controller;
+	};
+};
+
+&uart {
+	status = "okay";
+};