ramips: add support for cudy WR2100

Specifications

  SoC:       MT7621
  CPU:       880 MHz
  Flash:     16 MiB
  RAM:       128 MiB
  WLAN:      2.4 GHz b/g/n, 5 GHz a/n/ac
             MT7603E / MT7615E
  Ethernet:  5x Gbit ports

Installation

There are two known options:
1) The Luci-based UI.
2) Press and hold the reset button during power up.
   The router will request 'recovery.bin' from a TFTP server at
   192.168.1.88.

Both options require a signed firmware binary.
The openwrt image supplied by cudy is signed and can be used to
install unsigned images.

R4 & R5 need to be shorted (0-100Ω) for the UART to work.

Signed-off-by: Leon M. George <leon@georgemail.eu>
[remove non-required switch-port node - remove trgmii phy-mode]
Signed-off-by: David Bauer <mail@david-bauer.net>

1 files changed, 201 insertions, 0 deletions

diff --git a/target/linux/ramips/dts/mt7621_cudy_wr2100.dts b/target/linux/ramips/dts/mt7621_cudy_wr2100.dts
new file mode 100644
index 0000000000..692c94da55
--- /dev/null
+++ b/target/linux/ramips/dts/mt7621_cudy_wr2100.dts
@@ -0,0 +1,201 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "cudy,wr2100", "mediatek,mt7621-soc";
+	model = "Cudy WR2100";
+
+	aliases {
+		led-boot = &led_internet_blue;
+		led-failsafe = &led_internet_blue;
+		led-running = &led_internet_blue;
+		led-upgrade = &led_internet_blue;
+		label-mac-device = &gmac0;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&gpio 10 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_internet_blue: internet_blue {
+			label = "blue:internet";
+			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+		};
+
+		internet_red {
+			label = "red:internet";
+			gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
+		};
+
+		wan {
+			label = "green:wan";
+			gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+		};
+
+		lan1 {
+			label = "green:lan1";
+			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+		};
+
+		lan2 {
+			label = "green:lan2";
+			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
+		};
+
+		lan3 {
+			label = "green:lan3";
+			gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
+		};
+
+		lan4 {
+			label = "green:lan4";
+			gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&gmac0 {
+	mtd-mac-address = <&bdinfo 0xde00>;
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie0 {
+	wifi@0,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x0000>;
+		ieee80211-freq-limit = <2400000 2500000>;
+	};
+};
+
+&pcie1 {
+	wifi@1,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x8000>;
+		ieee80211-freq-limit = <5000000 6000000>;
+	};
+};
+
+&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 = "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 {
+				compatible = "denx,uimage";
+				label = "firmware";
+				reg = <0x50000 0xf80000>;
+			};
+
+			partition@fd0000 {
+				label = "debug";
+				reg = <0xfd0000 0x10000>;
+				read-only;
+			};
+
+			partition@fe0000 {
+				label = "backup";
+				reg = <0xfe0000 0x10000>;
+				read-only;
+			};
+
+			bdinfo: partition@ff0000 {
+				label = "bdinfo";
+				reg = <0xff0000 0x10000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&state_default {
+	gpio {
+		groups = "i2c", "jtag", "uart2", "uart3", "wdt";
+		function = "gpio";
+	};
+};
+
+&switch0 {
+	ports {
+		port@0 {
+			status = "okay";
+			label = "lan1";
+		};
+
+		port@1 {
+			status = "okay";
+			label = "lan2";
+		};
+
+		port@2 {
+			status = "okay";
+			label = "lan3";
+		};
+
+		port@3 {
+			status = "okay";
+			label = "lan4";
+		};
+
+		port@4 {
+			status = "okay";
+			label = "wan";
+
+			mtd-mac-address = <&bdinfo 0xde00>;
+			mtd-mac-address-increment = <1>;
+		};
+	};
+};