diff --git a/dts/x86/atom.dtsi b/dts/x86/atom.dtsi
index cd82761f33e..230bfb4af8a 100644
--- a/dts/x86/atom.dtsi
+++ b/dts/x86/atom.dtsi
@@ -44,7 +44,7 @@
 		ranges;
 
 
-		uart0: uart@000003f8 {
+		uart0: uart@3f8 {
 			compatible = "ns16550";
 			reg = <0x000003f8 0x100>;
 			label = "UART_0";
@@ -55,7 +55,7 @@
 			status = "disabled";
 		};
 
-		uart1: uart@000002f8 {
+		uart1: uart@2f8 {
 			compatible = "ns16550";
 			reg = <0x000002f8 0x100>;
 			label = "UART_1";
diff --git a/dts/x86/ia32.dtsi b/dts/x86/ia32.dtsi
index abf9cd9ac2c..362e20d32d9 100644
--- a/dts/x86/ia32.dtsi
+++ b/dts/x86/ia32.dtsi
@@ -46,7 +46,7 @@
 		ranges;
 
 
-		uart0: uart@000003f8 {
+		uart0: uart@3f8 {
 			compatible = "ns16550";
 			reg = <0x000003f8 0x100>;
 			label = "UART_0";
@@ -57,7 +57,7 @@
 			status = "disabled";
 		};
 
-		uart1: uart@000002f8 {
+		uart1: uart@2f8 {
 			compatible = "ns16550";
 			reg = <0x000002f8 0x100>;
 			label = "UART_1";
diff --git a/soc/x86/atom/dts.fixup b/soc/x86/atom/dts.fixup
index d653a85a4a4..5fd4ea37889 100644
--- a/soc/x86/atom/dts.fixup
+++ b/soc/x86/atom/dts.fixup
@@ -1,20 +1,20 @@
 /* SoC level DTS fixup file */
 
-#define CONFIG_UART_NS16550_PORT_0_BASE_ADDR	NS16550_000003F8_BASE_ADDRESS
-#define CONFIG_UART_NS16550_PORT_0_BAUD_RATE	NS16550_000003F8_CURRENT_SPEED
-#define CONFIG_UART_NS16550_PORT_0_NAME		NS16550_000003F8_LABEL
-#define CONFIG_UART_NS16550_PORT_0_IRQ		NS16550_000003F8_IRQ_0
-#define CONFIG_UART_NS16550_PORT_0_IRQ_PRI	NS16550_000003F8_IRQ_0_PRIORITY
-#define CONFIG_UART_NS16550_PORT_0_IRQ_FLAGS	NS16550_000003F8_IRQ_0_SENSE
-#define CONFIG_UART_NS16550_PORT_0_CLK_FREQ	NS16550_000003F8_CLOCK_FREQUENCY
+#define CONFIG_UART_NS16550_PORT_0_BASE_ADDR	NS16550_3F8_BASE_ADDRESS
+#define CONFIG_UART_NS16550_PORT_0_BAUD_RATE	NS16550_3F8_CURRENT_SPEED
+#define CONFIG_UART_NS16550_PORT_0_NAME		NS16550_3F8_LABEL
+#define CONFIG_UART_NS16550_PORT_0_IRQ		NS16550_3F8_IRQ_0
+#define CONFIG_UART_NS16550_PORT_0_IRQ_PRI	NS16550_3F8_IRQ_0_PRIORITY
+#define CONFIG_UART_NS16550_PORT_0_IRQ_FLAGS	NS16550_3F8_IRQ_0_SENSE
+#define CONFIG_UART_NS16550_PORT_0_CLK_FREQ	NS16550_3F8_CLOCK_FREQUENCY
 
-#define CONFIG_UART_NS16550_PORT_1_BASE_ADDR	NS16550_000002F8_BASE_ADDRESS
-#define CONFIG_UART_NS16550_PORT_1_BAUD_RATE	NS16550_000002F8_CURRENT_SPEED
-#define CONFIG_UART_NS16550_PORT_1_NAME		NS16550_000002F8_LABEL
-#define CONFIG_UART_NS16550_PORT_1_IRQ		NS16550_000002F8_IRQ_0
-#define CONFIG_UART_NS16550_PORT_1_IRQ_PRI	NS16550_000002F8_IRQ_0_PRIORITY
-#define CONFIG_UART_NS16550_PORT_1_IRQ_FLAGS	NS16550_000002F8_IRQ_0_SENSE
-#define CONFIG_UART_NS16550_PORT_1_CLK_FREQ	NS16550_000002F8_CLOCK_FREQUENCY
+#define CONFIG_UART_NS16550_PORT_1_BASE_ADDR	NS16550_2F8_BASE_ADDRESS
+#define CONFIG_UART_NS16550_PORT_1_BAUD_RATE	NS16550_2F8_CURRENT_SPEED
+#define CONFIG_UART_NS16550_PORT_1_NAME		NS16550_2F8_LABEL
+#define CONFIG_UART_NS16550_PORT_1_IRQ		NS16550_2F8_IRQ_0
+#define CONFIG_UART_NS16550_PORT_1_IRQ_PRI	NS16550_2F8_IRQ_0_PRIORITY
+#define CONFIG_UART_NS16550_PORT_1_IRQ_FLAGS	NS16550_2F8_IRQ_0_SENSE
+#define CONFIG_UART_NS16550_PORT_1_CLK_FREQ	NS16550_2F8_CLOCK_FREQUENCY
 
 #define CONFIG_PHYS_RAM_ADDR			CONFIG_SRAM_BASE_ADDRESS
 
diff --git a/soc/x86/ia32/dts.fixup b/soc/x86/ia32/dts.fixup
index 439b508b79e..6be7d0a5fa8 100644
--- a/soc/x86/ia32/dts.fixup
+++ b/soc/x86/ia32/dts.fixup
@@ -1,20 +1,20 @@
 /* SoC level DTS fixup file */
 
-#define CONFIG_UART_NS16550_PORT_0_BASE_ADDR	NS16550_000003F8_BASE_ADDRESS
-#define CONFIG_UART_NS16550_PORT_0_BAUD_RATE	NS16550_000003F8_CURRENT_SPEED
-#define CONFIG_UART_NS16550_PORT_0_NAME		NS16550_000003F8_LABEL
-#define CONFIG_UART_NS16550_PORT_0_IRQ		NS16550_000003F8_IRQ_0
-#define CONFIG_UART_NS16550_PORT_0_IRQ_PRI	NS16550_000003F8_IRQ_0_PRIORITY
-#define CONFIG_UART_NS16550_PORT_0_IRQ_FLAGS	NS16550_000003F8_IRQ_0_SENSE
-#define CONFIG_UART_NS16550_PORT_0_CLK_FREQ	NS16550_000003F8_CLOCK_FREQUENCY
+#define CONFIG_UART_NS16550_PORT_0_BASE_ADDR	NS16550_3F8_BASE_ADDRESS
+#define CONFIG_UART_NS16550_PORT_0_BAUD_RATE	NS16550_3F8_CURRENT_SPEED
+#define CONFIG_UART_NS16550_PORT_0_NAME		NS16550_3F8_LABEL
+#define CONFIG_UART_NS16550_PORT_0_IRQ		NS16550_3F8_IRQ_0
+#define CONFIG_UART_NS16550_PORT_0_IRQ_PRI	NS16550_3F8_IRQ_0_PRIORITY
+#define CONFIG_UART_NS16550_PORT_0_IRQ_FLAGS	NS16550_3F8_IRQ_0_SENSE
+#define CONFIG_UART_NS16550_PORT_0_CLK_FREQ	NS16550_3F8_CLOCK_FREQUENCY
 
-#define CONFIG_UART_NS16550_PORT_1_BASE_ADDR	NS16550_000002F8_BASE_ADDRESS
-#define CONFIG_UART_NS16550_PORT_1_BAUD_RATE	NS16550_000002F8_CURRENT_SPEED
-#define CONFIG_UART_NS16550_PORT_1_NAME		NS16550_000002F8_LABEL
-#define CONFIG_UART_NS16550_PORT_1_IRQ		NS16550_000002F8_IRQ_0
-#define CONFIG_UART_NS16550_PORT_1_IRQ_PRI	NS16550_000002F8_IRQ_0_PRIORITY
-#define CONFIG_UART_NS16550_PORT_1_IRQ_FLAGS	NS16550_000002F8_IRQ_0_SENSE
-#define CONFIG_UART_NS16550_PORT_1_CLK_FREQ	NS16550_000002F8_CLOCK_FREQUENCY
+#define CONFIG_UART_NS16550_PORT_1_BASE_ADDR	NS16550_2F8_BASE_ADDRESS
+#define CONFIG_UART_NS16550_PORT_1_BAUD_RATE	NS16550_2F8_CURRENT_SPEED
+#define CONFIG_UART_NS16550_PORT_1_NAME		NS16550_2F8_LABEL
+#define CONFIG_UART_NS16550_PORT_1_IRQ		NS16550_2F8_IRQ_0
+#define CONFIG_UART_NS16550_PORT_1_IRQ_PRI	NS16550_2F8_IRQ_0_PRIORITY
+#define CONFIG_UART_NS16550_PORT_1_IRQ_FLAGS	NS16550_2F8_IRQ_0_SENSE
+#define CONFIG_UART_NS16550_PORT_1_CLK_FREQ	NS16550_2F8_CLOCK_FREQUENCY
 
 #define CONFIG_PHYS_RAM_ADDR			CONFIG_SRAM_BASE_ADDRESS