ramips: mt7628: create shared DTSI for Xiaomi Mi Router 4A/4C

The Xiaomi Mi Router 4A (100M) and 4C are relatively similar in
their specs. Create a shared DTSI for them.

Partitions are split in preparation for Mi Router 4AC.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 102 insertions, 0 deletions

diff --git a/target/linux/ramips/dts/mt7628an_xiaomi_mi-router-4.dtsi b/target/linux/ramips/dts/mt7628an_xiaomi_mi-router-4.dtsi
new file mode 100644
index 0000000000..0f5897f5c5
--- /dev/null
+++ b/target/linux/ramips/dts/mt7628an_xiaomi_mi-router-4.dtsi
@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7628an.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	aliases {
+		led-boot = &led_power_yellow;
+		led-failsafe = &led_power_yellow;
+		led-running = &led_power_blue;
+		led-upgrade = &led_power_yellow;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_power_blue: power_blue {
+			label = "blue:power";
+			gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+		};
+
+		led_power_yellow: power_yellow {
+			label = "yellow:power";
+			gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	flash0: flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+
+		partitions: partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "bootloader";
+				reg = <0x0 0x20000>;
+				read-only;
+			};
+
+			partition@20000 {
+				label = "config";
+				reg = <0x20000 0x10000>;
+				read-only;
+			};
+
+			factory: partition@30000 {
+				label = "factory";
+				reg = <0x30000 0x10000>;
+				read-only;
+			};
+
+			partition@40000 {
+				label = "crash";
+				reg = <0x40000 0x10000>;
+				read-only;
+			};
+
+			partition@50000 {
+				label = "cfg_bak";
+				reg = <0x50000 0x10000>;
+				read-only;
+			};
+
+			/* additional partitions in DTS */
+		};
+	};
+};
+
+&state_default {
+	gpio {
+		groups = "gpio", "wdt", "wled_an";
+		function = "gpio";
+	};
+};
+
+&wmac {
+	status = "okay";
+};