diff --git a/soc/arm/nxp_imx/Kconfig.defconfig b/soc/arm/nxp_imx/Kconfig.defconfig
index e9ac9457632..7e27aff32fc 100644
--- a/soc/arm/nxp_imx/Kconfig.defconfig
+++ b/soc/arm/nxp_imx/Kconfig.defconfig
@@ -1,4 +1,8 @@
 # Copyright (c) 2017, NXP
 # SPDX-License-Identifier: Apache-2.0
 
+config SERIAL_INIT_PRIORITY
+	default 55
+	depends on SERIAL
+
 source "soc/arm/nxp_imx/*/Kconfig.defconfig.series"
diff --git a/soc/arm/nxp_kinetis/Kconfig.defconfig b/soc/arm/nxp_kinetis/Kconfig.defconfig
index fd6f6f29eda..78efb88584f 100644
--- a/soc/arm/nxp_kinetis/Kconfig.defconfig
+++ b/soc/arm/nxp_kinetis/Kconfig.defconfig
@@ -1,3 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
+config SERIAL_INIT_PRIORITY
+	default 55
+	depends on SERIAL
+
 source "soc/arm/nxp_kinetis/*/Kconfig.defconfig.series"
diff --git a/soc/arm/nxp_lpc/Kconfig.defconfig b/soc/arm/nxp_lpc/Kconfig.defconfig
index 02c8f452554..975ce219204 100644
--- a/soc/arm/nxp_lpc/Kconfig.defconfig
+++ b/soc/arm/nxp_lpc/Kconfig.defconfig
@@ -14,3 +14,7 @@ config SPI_MCUX_FLEXCOMM
 config CLOCK_CONTROL_MCUX_SYSCON
 	default y if HAS_MCUX_SYSCON
 	depends on CLOCK_CONTROL
+
+config SERIAL_INIT_PRIORITY
+	default 55
+	depends on SERIAL