diff --git a/arch/arm/soc/arm/beetle/soc.h b/arch/arm/soc/arm/beetle/soc.h
index f66049ecb39..2ddc19454e7 100644
--- a/arch/arm/soc/arm/beetle/soc.h
+++ b/arch/arm/soc/arm/beetle/soc.h
@@ -113,10 +113,6 @@
 /* CMSDK APB Dual Timer */
 #define CMSDK_APB_DTIMER _BEETLE_DTIMER_BASE
 
-/* CMSDK APB Universal Asynchronous Receiver-Transmitter (UART) */
-#define CMSDK_APB_UART0 _BEETLE_UART0_BASE
-#define CMSDK_APB_UART1 _BEETLE_UART1_BASE
-
 /* CMSDK APB Watchdog */
 #define CMSDK_APB_WDOG _BEETLE_WDOG_BASE
 
diff --git a/arch/arm/soc/arm/beetle/soc_irq.h b/arch/arm/soc/arm/beetle/soc_irq.h
index 771d5ed2b27..566621258b7 100644
--- a/arch/arm/soc/arm/beetle/soc_irq.h
+++ b/arch/arm/soc/arm/beetle/soc_irq.h
@@ -57,12 +57,6 @@
 #define IRQ_PORT3_ALL           43 /* GPIO Port 3 combined Interrupt        */
 #define IRQ_TRNG                44 /* Random number generator Interrupt     */
 
-#ifndef CONFIG_HAS_DTS
-/* CMSDK APB Universal Asynchronous Receiver-Transmitter (UART) */
-#define CMSDK_APB_UART_0_IRQ IRQ_UART0
-#define CMSDK_APB_UART_1_IRQ IRQ_UART1
-#endif
-
 /* CMSDK APB Timers */
 #define CMSDK_APB_TIMER_0_IRQ IRQ_TIMER0
 #define CMSDK_APB_TIMER_1_IRQ IRQ_TIMER1
diff --git a/dts/arm/v2m_beetle.dts b/dts/arm/v2m_beetle.dts
index 13150cb669f..e72f60827f3 100644
--- a/dts/arm/v2m_beetle.dts
+++ b/dts/arm/v2m_beetle.dts
@@ -32,14 +32,14 @@
 	soc {
 		uart0: uart@40004000 {
 			compatible = "arm,cmsdk-uart";
-			reg = <0x40004000 0x14>;
+			reg = <0x40004000 0x1000>;
 			interrupts = <IRQ_UART0 3>;
 			current-speed = <115200>;
 		};
 
 		uart1: uart@40005000 {
 			compatible = "arm,cmsdk-uart";
-			reg = <0x40005000 0x14>;
+			reg = <0x40005000 0x1000>;
 			interrupts = <IRQ_UART1 3>;
 			current-speed = <115200>;
 		};
diff --git a/dts/arm/v2m_beetle.fixup b/dts/arm/v2m_beetle.fixup
index 4fa75f4e65b..f810397fba9 100644
--- a/dts/arm/v2m_beetle.fixup
+++ b/dts/arm/v2m_beetle.fixup
@@ -1,9 +1,12 @@
 #define CONFIG_NUM_IRQ_PRIO_BITS	ARM_V7M_NVIC_E000E100_ARM_NUM_IRQ_PRIORITY_BITS
 
+/* CMSDK APB Universal Asynchronous Receiver-Transmitter (UART) */
+#define CMSDK_APB_UART0				ARM_CMSDK_UART_40004000_BASE_ADDRESS_0
 #define CMSDK_APB_UART_0_IRQ			ARM_CMSDK_UART_40004000_IRQ_0
 #define CONFIG_UART_CMSDK_APB_PORT0_IRQ_PRI	ARM_CMSDK_UART_40004000_IRQ_0_PRIORITY
 #define CONFIG_UART_CMSDK_APB_PORT0_BAUD_RATE	ARM_CMSDK_UART_40004000_CURRENT_SPEED
 
+#define CMSDK_APB_UART1				ARM_CMSDK_UART_40005000_BASE_ADDRESS_0
 #define CMSDK_APB_UART_1_IRQ			ARM_CMSDK_UART_40005000_IRQ_0
 #define CONFIG_UART_CMSDK_APB_PORT1_IRQ_PRI	ARM_CMSDK_UART_40005000_IRQ_0_PRIORITY
 #define CONFIG_UART_CMSDK_APB_PORT1_BAUD_RATE	ARM_CMSDK_UART_40005000_CURRENT_SPEED