mips: dts: realtek: Add syscon-reboot node

The board level reset on systems using the RTL9302 can be driven via the
switch. Use a syscon-reboot node to represent this.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

Author: cpackham-atlnz

arch/mips/boot/dts/realtek/cameo-rtl9302c-2x-rtl8224-2xge.dts

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 /dts-v1/;
 
-#include "rtl930x.dtsi"
+#include "rtl9302c.dtsi"
 
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/gpio/gpio.h>

arch/mips/boot/dts/realtek/rtl9302c.dtsi

@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
+
+#include "rtl930x.dtsi"
+
+&switch0 {
+	compatible = "realtek,rtl9302c-switch", "syscon", "simple-mfd";
+};

arch/mips/boot/dts/realtek/rtl930x.dtsi

@@ -29,6 +29,19 @@
 		#clock-cells = <0>;
 		clock-frequency  = <175000000>;
 	};
+
+	switch0: switch@1b000000 {
+		compatible = "realtek,rtl9301-switch", "syscon", "simple-mfd";
+		reg = <0x1b000000 0x10000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		reboot@c {
+			compatible = "syscon-reboot";
+			reg = <0x0c 0x4>;
+			value = <0x01>;
+		};
+	};
 };
 
 &soc {