diff --git a/boards/riscv/m2gl025_miv/m2gl025_miv_defconfig b/boards/riscv/m2gl025_miv/m2gl025_miv_defconfig
index e0f2cf9fed9..93db3e31106 100644
--- a/boards/riscv/m2gl025_miv/m2gl025_miv_defconfig
+++ b/boards/riscv/m2gl025_miv/m2gl025_miv_defconfig
@@ -6,7 +6,6 @@ CONFIG_BOARD_M2GL025_MIV=y
 CONFIG_CONSOLE=y
 CONFIG_SERIAL=y
 CONFIG_UART_MIV=y
-CONFIG_UART_MIV_PORT_0=y
 CONFIG_UART_CONSOLE=y
 CONFIG_PLIC=y
 CONFIG_RISCV_MACHINE_TIMER=y
diff --git a/drivers/serial/Kconfig.miv b/drivers/serial/Kconfig.miv
index f777b825c2f..255a6fee6e7 100644
--- a/drivers/serial/Kconfig.miv
+++ b/drivers/serial/Kconfig.miv
@@ -9,10 +9,3 @@ config UART_MIV
 	select SERIAL_HAS_DRIVER
 	help
 	  This option enables the Mi-V serial driver.
-
-config UART_MIV_PORT_0
-	bool "Enable Mi-V Port 0"
-	depends on UART_MIV
-	help
-	  This tells the driver to configure the UART port at boot, depending on
-	  the additional configuration options below.
diff --git a/drivers/serial/uart_miv.c b/drivers/serial/uart_miv.c
index 9cf323f0cd0..0288453423a 100644
--- a/drivers/serial/uart_miv.c
+++ b/drivers/serial/uart_miv.c
@@ -379,7 +379,7 @@ static const struct uart_driver_api uart_miv_driver_api = {
 #endif
 };
 
-#ifdef CONFIG_UART_MIV_PORT_0
+#ifdef DT_INST_0_MICROSEMI_COREUART
 
 static struct uart_miv_data uart_miv_data_0;
 
@@ -388,16 +388,16 @@ static void uart_miv_irq_cfg_func_0(struct device *dev);
 #endif
 
 static const struct uart_miv_device_config uart_miv_dev_cfg_0 = {
-	.uart_addr    = DT_MIV_UART_0_BASE_ADDR,
-	.sys_clk_freq = DT_MIV_UART_0_CLOCK_FREQUENCY,
+	.uart_addr    = DT_INST_0_MICROSEMI_COREUART_BASE_ADDRESS,
+	.sys_clk_freq = DT_INST_0_MICROSEMI_COREUART_CLOCK_FREQUENCY,
 	.line_config  = MIV_UART_0_LINECFG,
-	.baud_rate    = DT_MIV_UART_0_BAUD_RATE,
+	.baud_rate    = DT_INST_0_MICROSEMI_COREUART_CURRENT_SPEED,
 #ifdef CONFIG_UART_INTERRUPT_DRIVEN
 	.cfg_func     = uart_miv_irq_cfg_func_0,
 #endif
 };
 
-DEVICE_AND_API_INIT(uart_miv_0, DT_MIV_UART_0_NAME,
+DEVICE_AND_API_INIT(uart_miv_0, DT_INST_0_MICROSEMI_COREUART_LABEL,
 		    uart_miv_init, &uart_miv_data_0, &uart_miv_dev_cfg_0,
 		    PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
 		    (void *)&uart_miv_driver_api);
@@ -412,4 +412,4 @@ static void uart_miv_irq_cfg_func_0(struct device *dev)
 }
 #endif
 
-#endif /* CONFIG_UART_MIV_PORT_0 */
+#endif /* DT_INST_0_MICROSEMI_COREUART */
diff --git a/soc/riscv/riscv-privilege/miv/dts_fixup.h b/soc/riscv/riscv-privilege/miv/dts_fixup.h
deleted file mode 100644
index 978f2d38cab..00000000000
--- a/soc/riscv/riscv-privilege/miv/dts_fixup.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: Apache-2.0 */
-
-/* UART 0 */
-#define DT_MIV_UART_0_BASE_ADDR		DT_MICROSEMI_COREUART_70001000_BASE_ADDRESS
-#define DT_MIV_UART_0_CLOCK_FREQUENCY	DT_MICROSEMI_COREUART_70001000_CLOCK_FREQUENCY
-#define DT_MIV_UART_0_BAUD_RATE		DT_MICROSEMI_COREUART_70001000_CURRENT_SPEED
-#define DT_MIV_UART_0_NAME			DT_MICROSEMI_COREUART_70001000_LABEL