ramips: mt7620: Add support for D-Link DWR-961 A1

The DWR-961 A1 Wireless Router is based on the MT7620A SoC.
It's a merge of two Amit boards: DWR-960 with ethernet part
of Lava LR-25G001.

ROMID it's taken from Telenor branded version and it works with tested
device. Images from D-Link site for this router are from DWR-953 and it
have ROMID DLK6E2424001. I don't know if it's mistake on web-site
or if it's will require different image.

Specification:

- MediaTek MT7620A (580 Mhz)
- 128 MB of RAM
- 16 MB of FLASH
- 1x 802.11bgn radio
- 1x 802.11ac radio (MT7612 mpcie card)
- 5x 10/100/1000 Mbps Ethernet: 4xLAN and 1xWAN (QCA8337)
- 2x internal, non-detachable antennas (Wifi 2.4G)
- 3x external, detachable antennas (2x LTE, 1x Wifi 5G)
- 1x LTE modem cat 6
- UART (J5) header on PCB (57600 8n1)
- 13x LED, 2x button
- JBOOT bootloader

Installation:
Apply factory image via http web-gui or JBOOT recovery page

How to revert to OEM firmware:
- push the reset button and turn on the power. Wait until LED start
  blinking (~10sec.)
- upload original factory image via JBOOT http (IP: 192.168.123.254)

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

1 files changed, 178 insertions, 0 deletions

diff --git a/target/linux/ramips/dts/mt7620a_dlink_dwr-96x.dtsi b/target/linux/ramips/dts/mt7620a_dlink_dwr-96x.dtsi
new file mode 100644
index 0000000000..a5fd705eba
--- /dev/null
+++ b/target/linux/ramips/dts/mt7620a_dlink_dwr-96x.dtsi
@@ -0,0 +1,178 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * D-Link DWR-96x Common Board Description
+ * Copyright 2022 Pawel Dembicki <paweldembicki@gmail.com>
+ */
+#include "mt7620a.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/mtd/partitions/uimage.h>
+
+/ {
+	aliases {
+		led-boot = &led_status;
+		led-failsafe = &led_status;
+		led-running = &led_status;
+		led-upgrade = &led_status;
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_status: status {
+			label = "green:status";
+			gpios = <&gpio0 7 GPIO_ACTIVE_LOW>;
+		};
+
+		wan {
+			label = "green:wan";
+			gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
+		};
+
+		lan {
+			label = "green:lan";
+			gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
+		};
+
+		sms {
+			label = "green:sms";
+			gpios = <&gpio1 15 GPIO_ACTIVE_LOW>;
+		};
+
+		signal_green {
+			label = "green:signal";
+			gpios = <&gpio2 0 GPIO_ACTIVE_HIGH>;
+		};
+
+		signal_red {
+			label = "red:signal";
+			gpios = <&gpio2 1 GPIO_ACTIVE_HIGH>;
+		};
+
+		4g {
+			label = "green:4g";
+			gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
+		};
+
+		3g {
+			label = "green:3g";
+			gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
+		};
+
+		wlan5g {
+			label = "green:wlan5g";
+			gpios = <&gpio2 4 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+
+		wlan2g {
+			label = "green:wlan2g";
+			gpios = <&gpio3 0 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy1tpt";
+		};
+	};
+};
+
+&ehci {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio2 {
+	status = "okay";
+};
+
+&gpio3 {
+	status = "okay";
+};
+
+&ohci {
+	status = "okay";
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie0 {
+	wifi: wifi@0,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		ieee80211-freq-limit = <5000000 6000000>;
+		nvmem-cells = <&macaddr_config_e50e>;
+		nvmem-cell-names = "mac-address";
+		mac-address-increment = <(2)>;
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "jboot";
+				reg = <0x0 0x10000>;
+				read-only;
+			};
+
+			partition@10000 {
+				compatible = "openwrt,uimage", "denx,uimage";
+				openwrt,ih-magic = <IH_MAGIC_OKLI>;
+				openwrt,offset = <0x10000>;
+				label = "firmware";
+				reg = <0x10000 0xfe0000>;
+			};
+
+			config: partition@ff0000 {
+				compatible = "nvmem-cells";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				label = "config";
+				reg = <0xff0000 0x10000>;
+				read-only;
+
+				macaddr_config_e50e: macaddr@e50e {
+					reg = <0xe50e 0x6>;
+				};
+			};
+		};
+	};
+};
+
+&state_default {
+	default {
+		groups = "i2c", "wled", "spi refclk", "uartf", "ephy";
+		function = "gpio";
+	};
+};