diff --git a/boards/arm/efm32hg_slstk3400a/dts_fixup.h b/boards/arm/efm32hg_slstk3400a/dts_fixup.h
deleted file mode 100644
index a5aee8d17fc..00000000000
--- a/boards/arm/efm32hg_slstk3400a/dts_fixup.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/* This file is a temporary workaround for mapping of the generated information
- * to the current driver definitions.  This will be removed when the drivers
- * are modified to handle the generated information, or the mapping of
- * generated data matches the driver definitions.
- */
-
-
-#define CONFIG_NUM_IRQ_PRIO_BITS	ARM_V6M_NVIC_E000E100_ARM_NUM_IRQ_PRIORITY_BITS
-#define CONFIG_USART_GECKO_0_NAME	SILABS_EFM32_USART_4000C000_LABEL
-#define CONFIG_USART_GECKO_1_NAME	SILABS_EFM32_USART_4000C400_LABEL
-
-#define CONFIG_USART_GECKO_0_BAUD_RATE	SILABS_EFM32_USART_4000C000_CURRENT_SPEED
-#define CONFIG_USART_GECKO_0_IRQ_PRI	SILABS_EFM32_USART_4000C000_IRQ_0_PRIORITY
-#define CONFIG_USART_GECKO_1_BAUD_RATE	SILABS_EFM32_USART_4000C400_CURRENT_SPEED
-#define CONFIG_USART_GECKO_1_IRQ_PRI	SILABS_EFM32_USART_4000C400_IRQ_0_PRIORITY
diff --git a/soc/arm/silabs_exx32/efm32hg/dts_fixup.h b/soc/arm/silabs_exx32/efm32hg/dts_fixup.h
index 2fe989a3121..83c9f46b10c 100644
--- a/soc/arm/silabs_exx32/efm32hg/dts_fixup.h
+++ b/soc/arm/silabs_exx32/efm32hg/dts_fixup.h
@@ -7,10 +7,15 @@
 /* SoC level DTS fixup file */
 
 #define CONFIG_NUM_IRQ_PRIO_BITS	ARM_V6M_NVIC_E000E100_ARM_NUM_IRQ_PRIORITY_BITS
-#define CONFIG_UART_GECKO_0_NAME	SILABS_EFM32_USART_4000C000_LABEL
 
-#define CONFIG_UART_GECKO_0_BAUD_RATE	SILABS_EFM32_USART_4000C000_CURRENT_SPEED
-#define CONFIG_UART_GECKO_0_IRQ_PRI	SILABS_EFM32_USART_4000C000_IRQ_0_PRIORITY
+#define CONFIG_USART_GECKO_0_NAME	SILABS_EFM32_USART_4000C000_LABEL
+#define CONFIG_USART_GECKO_0_BAUD_RATE	SILABS_EFM32_USART_4000C000_CURRENT_SPEED
+#define CONFIG_USART_GECKO_0_IRQ_PRI	SILABS_EFM32_USART_4000C000_IRQ_0_PRIORITY
+
+#define CONFIG_USART_GECKO_1_NAME	SILABS_EFM32_USART_4000C400_LABEL
+#define CONFIG_USART_GECKO_1_BAUD_RATE	SILABS_EFM32_USART_4000C400_CURRENT_SPEED
+#define CONFIG_USART_GECKO_1_IRQ_PRI	SILABS_EFM32_USART_4000C400_IRQ_0_PRIORITY
+
 
 #define CONFIG_GPIO_GECKO_COMMON_NAME	SILABS_EFM32_GPIO_40006100_LABEL
 #define CONFIG_GPIO_GECKO_COMMON_EVEN_IRQ	SILABS_EFM32_GPIO_40006100_IRQ_GPIO_EVEN