arm64: dts: realtek: rtd16xx: Introduce iso and misc syscon

Group UART0 into an Isolation syscon mfd node.
Group UART1 and UART2 into a Miscellaneous syscon mfd node.
Acked-by: James Tai <james.tai@realtek.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>

arch/arm64/boot/dts/realtek/rtd16xx.dtsi

@@ -137,34 +137,22 @@ rbus: bus@98000000 {
 			#size-cells = <1>;
 			ranges = <0x0 0x98000000 0x200000>;
 
-			uart0: serial0@7800 {
-				compatible = "snps,dw-apb-uart";
-				reg = <0x7800 0x400>;
-				reg-shift = <2>;
+			iso: syscon@7000 {
+				compatible = "syscon", "simple-mfd";
+				reg = <0x7000 0x1000>;
 				reg-io-width = <4>;
-				interrupts = <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>;
-				clock-frequency = <27000000>;
-				status = "disabled";
+				#address-cells = <1>;
+				#size-cells = <1>;
+				ranges = <0x0 0x7000 0x1000>;
 			};
 
-			uart1: serial1@1b200 {
-				compatible = "snps,dw-apb-uart";
-				reg = <0x1b200 0x400>;
-				reg-shift = <2>;
+			misc: syscon@1b000 {
+				compatible = "syscon", "simple-mfd";
+				reg = <0x1b000 0x1000>;
 				reg-io-width = <4>;
-				interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
-				clock-frequency = <432000000>;
-				status = "disabled";
-			};
-
-			uart2: serial2@1b400 {
-				compatible = "snps,dw-apb-uart";
-				reg = <0x1b400 0x400>;
-				reg-shift = <2>;
-				reg-io-width = <4>;
-				interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
-				clock-frequency = <432000000>;
-				status = "disabled";
+				#address-cells = <1>;
+				#size-cells = <1>;
+				ranges = <0x0 0x1b000 0x1000>;
 			};
 		};
 
@@ -178,3 +166,37 @@ gic: interrupt-controller@ff100000 {
 		};
 	};
 };
+
+&iso {
+	uart0: serial0@800 {
+		compatible = "snps,dw-apb-uart";
+		reg = <0x800 0x400>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		interrupts = <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <27000000>;
+		status = "disabled";
+	};
+};
+
+&misc {
+	uart1: serial1@200 {
+		compatible = "snps,dw-apb-uart";
+		reg = <0x200 0x400>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <432000000>;
+		status = "disabled";
+	};
+
+	uart2: serial2@400 {
+		compatible = "snps,dw-apb-uart";
+		reg = <0x400 0x400>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <432000000>;
+		status = "disabled";
+	};
+};