ARM: dts: aspeed: Clean up UART nodes

- Shorten size of reg property so it covers only the implemented
 registers

 - Add VUART compatible, and change node name to serial@

 - Remove outdated current-speed property. Different bootloaders use
 different speeds, so this is no longer helpful
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-g4.dtsi

@@ -27,6 +27,7 @@ aliases {
 		serial2 = &uart3;
 		serial3 = &uart4;
 		serial4 = &uart5;
+		serial5 = &vuart;
 	};
 
 	cpus {
@@ -185,7 +186,7 @@ timer: timer@1e782000 {
 
 			uart1: serial@1e783000 {
 				compatible = "ns16550a";
-				reg = <0x1e783000 0x1000>;
+				reg = <0x1e783000 0x20>;
 				reg-shift = <2>;
 				interrupts = <9>;
 				clocks = <&clk_uart>;
@@ -195,11 +196,10 @@ uart1: serial@1e783000 {
 
 			uart5: serial@1e784000 {
 				compatible = "ns16550a";
-				reg = <0x1e784000 0x1000>;
+				reg = <0x1e784000 0x20>;
 				reg-shift = <2>;
 				interrupts = <10>;
 				clocks = <&clk_uart>;
-				current-speed = <38400>;
 				no-loopback-test;
 				status = "disabled";
 			};
@@ -218,9 +218,9 @@ wdt2: wdt@1e785020 {
 				status = "disabled";
 			};
 
-			uart6: serial@1e787000 {
-				compatible = "ns16550a";
-				reg = <0x1e787000 0x1000>;
+			vuart: serial@1e787000 {
+				compatible = "aspeed,ast2400-vuart";
+				reg = <0x1e787000 0x40>;
 				reg-shift = <2>;
 				interrupts = <10>;
 				clocks = <&clk_uart>;
@@ -230,7 +230,7 @@ uart6: serial@1e787000 {
 
 			uart2: serial@1e78d000 {
 				compatible = "ns16550a";
-				reg = <0x1e78d000 0x1000>;
+				reg = <0x1e78d000 0x20>;
 				reg-shift = <2>;
 				interrupts = <32>;
 				clocks = <&clk_uart>;
@@ -240,7 +240,7 @@ uart2: serial@1e78d000 {
 
 			uart3: serial@1e78e000 {
 				compatible = "ns16550a";
-				reg = <0x1e78e000 0x1000>;
+				reg = <0x1e78e000 0x20>;
 				reg-shift = <2>;
 				interrupts = <33>;
 				clocks = <&clk_uart>;
@@ -250,7 +250,7 @@ uart3: serial@1e78e000 {
 
 			uart4: serial@1e78f000 {
 				compatible = "ns16550a";
-				reg = <0x1e78f000 0x1000>;
+				reg = <0x1e78f000 0x20>;
 				reg-shift = <2>;
 				interrupts = <34>;
 				clocks = <&clk_uart>;

arch/arm/boot/dts/aspeed-g5.dtsi

@@ -27,6 +27,7 @@ aliases {
 		serial2 = &uart3;
 		serial3 = &uart4;
 		serial4 = &uart5;
+		serial5 = &vuart;
 	};
 
 	cpus {
@@ -229,7 +230,7 @@ timer: timer@1e782000 {
 
 			uart1: serial@1e783000 {
 				compatible = "ns16550a";
-				reg = <0x1e783000 0x1000>;
+				reg = <0x1e783000 0x20>;
 				reg-shift = <2>;
 				interrupts = <9>;
 				clocks = <&clk_uart>;
@@ -239,11 +240,10 @@ uart1: serial@1e783000 {
 
 			uart5: serial@1e784000 {
 				compatible = "ns16550a";
-				reg = <0x1e784000 0x1000>;
+				reg = <0x1e784000 0x20>;
 				reg-shift = <2>;
 				interrupts = <10>;
 				clocks = <&clk_uart>;
-				current-speed = <38400>;
 				no-loopback-test;
 				status = "disabled";
 			};
@@ -297,9 +297,9 @@ lhc: lhc@20 {
 				};
 			};
 
-			uart6: serial@1e787000 {
-				compatible = "ns16550a";
-				reg = <0x1e787000 0x1000>;
+			vuart: serial@1e787000 {
+				compatible = "aspeed,ast2500-vuart";
+				reg = <0x1e787000 0x40>;
 				reg-shift = <2>;
 				interrupts = <10>;
 				clocks = <&clk_uart>;
@@ -309,7 +309,7 @@ uart6: serial@1e787000 {
 
 			uart2: serial@1e78d000 {
 				compatible = "ns16550a";
-				reg = <0x1e78d000 0x1000>;
+				reg = <0x1e78d000 0x20>;
 				reg-shift = <2>;
 				interrupts = <32>;
 				clocks = <&clk_uart>;
@@ -319,7 +319,7 @@ uart2: serial@1e78d000 {
 
 			uart3: serial@1e78e000 {
 				compatible = "ns16550a";
-				reg = <0x1e78e000 0x1000>;
+				reg = <0x1e78e000 0x20>;
 				reg-shift = <2>;
 				interrupts = <33>;
 				clocks = <&clk_uart>;
@@ -329,7 +329,7 @@ uart3: serial@1e78e000 {
 
 			uart4: serial@1e78f000 {
 				compatible = "ns16550a";
-				reg = <0x1e78f000 0x1000>;
+				reg = <0x1e78f000 0x20>;
 				reg-shift = <2>;
 				interrupts = <34>;
 				clocks = <&clk_uart>;