ramips: add support for Netgear R6080

This adds support for the Netgear R6080, aka Netgear AC1000.

The R6080 has almost the same hardware as the Netgear R6120,
aka Netgear AC1200, but it lacks the USB port, has only 8 MiB flash and
uses a different SERCOMM_HWID.

Specification:

SoC: MediaTek MT7628 (580 MHz)
Flash: 8 MiB
RAM: 64 MiB
Wireless: 2.4Ghz (builtin) and 5Ghz (MT7612E)
LAN speed: 10/100
LAN ports: 4
WAN speed: 10/100
WAN ports: 1
UART (57600 8N1) on PCB

Installation:

Flashing OpenWRT from stock firmware requires nmrpflash. Use an ethernet
cable to connect to LAN port 1 of the R6080, and power the R6080 off.
From the connected workstation, run
`nmrpflash -i eth0 -f openwrt-ramips-mt76x8-netgear_r6080-squashfs-factory.img`,
replacing eth0 with the appropriate interface (can be identified by
running `nmrpflash -L`). Then power on the R6080. After flashing has finished,
power cycle the R6080, and it will boot into OpenWRT. Once OpenWRT has been
installed, subsequent flashes can use the web interface and sysupgrade files.

Signed-off-by: Alex Lewontin <alex.c.lewontin@gmail.com>
[rebase and adjust for 5.4]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

4 files changed, 170 insertions, 0 deletions

diff --git a/target/linux/ramips/dts/mt7628an_netgear_r6080.dts b/target/linux/ramips/dts/mt7628an_netgear_r6080.dts
new file mode 100644
index 0000000000..5bca023c71
--- /dev/null
+++ b/target/linux/ramips/dts/mt7628an_netgear_r6080.dts
@@ -0,0 +1,148 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include "mt7628an.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "netgear,r6080", "mediatek,mt7628an-soc";
+	model = "Netgear R6080";
+
+	aliases {
+		led-boot = &led_power;
+		led-failsafe = &led_power;
+		led-running = &led_power;
+		led-upgrade = &led_power;
+		label-mac-device = &ethernet;
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		lan {
+			label = "r6080:green:lan";
+			gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
+		};
+
+		led_power: power {
+			label = "r6080:green:power";
+			gpios = <&gpio 43 GPIO_ACTIVE_LOW>;
+		};
+
+		wlan2g_green {
+			label = "r6080:green:wlan2g";
+			gpios = <&gpio 42 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+
+		wlan2g_orange {
+			label = "r6080:orange:wlan2g";
+			gpios = <&gpio 41 GPIO_ACTIVE_LOW>;
+		};
+
+		wan_green {
+			label = "r6080:green:wan";
+			gpios = <&gpio 40 GPIO_ACTIVE_LOW>;
+		};
+
+		wan_orange {
+			label = "r6080:orange:wan";
+			gpios = <&gpio 39 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&state_default {
+	gpio {
+		groups = "p0led_an", "p1led_an", "p2led_an", "p3led_an",
+		         "p4led_an", "wdt", "wled_an";
+		function = "gpio";
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <86000000>;
+		m25p,fast-read;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x0 0x40000>;
+				read-only;
+			};
+
+			factory: partition@40000 {
+				label = "factory";
+				reg = <0x40000 0x20000>;
+				read-only;
+			};
+
+			partition@60000 {
+				label = "nvram";
+				reg = <0x60000 0x30000>;
+				read-only;
+			};
+
+			partition@90000 {
+				compatible = "denx,uimage";
+				label = "firmware";
+				reg = <0x90000 0x760000>;
+			};
+
+			partition@7f0000 {
+				label = "reserved";
+				reg = <0x7f0000 0x10000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&wmac {
+	status = "okay";
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0x4>;
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie0 {
+	wifi@0,0 {
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x8000>;
+		ieee80211-freq-limit = <5000000 6000000>;
+	};
+};
+
+&ehci {
+	status = "disabled";
+};
+
+&ohci {
+	status = "disabled";
+};
diff --git a/target/linux/ramips/image/mt76x8.mk b/target/linux/ramips/image/mt76x8.mk
index f3ae384a23..a18afefd74 100644
--- a/target/linux/ramips/image/mt76x8.mk
+++ b/target/linux/ramips/image/mt76x8.mk
@@ -189,6 +189,25 @@ define Device/mercury_mac1200r-v2
 endef
 TARGET_DEVICES += mercury_mac1200r-v2
 
+define Device/netgear_r6080
+  BLOCKSIZE := 64k
+  IMAGE_SIZE := 7552k
+  DEVICE_VENDOR := NETGEAR
+  DEVICE_MODEL := R6080
+  DEVICE_PACKAGES := kmod-mt76x2
+  SERCOMM_HWID := CFR
+  SERCOMM_HWVER := A001
+  SERCOMM_SWVER := 0x0040
+  IMAGES += factory.img
+  IMAGE/default := append-kernel | pad-to $$$$(BLOCKSIZE) | append-rootfs | \
+	pad-rootfs
+  IMAGE/sysupgrade.bin := $$(IMAGE/default) | append-metadata | check-size
+  IMAGE/factory.img := pad-extra 576k | $$(IMAGE/default) | \
+	pad-to $$$$(BLOCKSIZE) | sercom-footer | pad-to 128 | zip R6080.bin | \
+	sercom-seal
+endef
+TARGET_DEVICES += netgear_r6080
+
 define Device/netgear_r6120
   BLOCKSIZE := 64k
   IMAGE_SIZE := 15744k
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 0837f9d003..fc582becb9 100755
--- a/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds
@@ -23,6 +23,7 @@ alfa-network,awusfree1)
 asus,rt-n10p-v3|\
 asus,rt-n11p-b1|\
 asus,rt-n12-vp-b1|\
+netgear,r6080|\
 netgear,r6120)
 	ucidef_set_led_switch "lan" "lan" "$boardname:green:lan" "switch0" "0xf"
 	ucidef_set_led_switch "wan" "wan" "$boardname:green:wan" "switch0" "0x10"
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 398b5e88c7..2b4ca0926f 100755
--- a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
@@ -92,6 +92,7 @@ ramips_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"1:lan:4" "2:lan:3" "3:lan:2" "4:lan:1" "0:wan" "6@eth0"
 		;;
+	netgear,r6080|\
 	netgear,r6120)
 		ucidef_add_switch "switch0" \
 			"0:lan:4" "1:lan:3" "2:lan:2" "3:lan:1" "4:wan" "6@eth0"
@@ -146,6 +147,7 @@ ramips_setup_macs()
 		label_mac=$(mtd_get_mac_binary factory 0x4)
 		;;
 	duzun,dm06|\
+	netgear,r6080|\
 	netgear,r6120|\
 	wrtnode,wrtnode2p|\
 	wrtnode,wrtnode2r|\