diff --git a/doc/releases/migration-guide-3.6.rst b/doc/releases/migration-guide-3.6.rst
index 822b090c17d..ab621d2676e 100644
--- a/doc/releases/migration-guide-3.6.rst
+++ b/doc/releases/migration-guide-3.6.rst
@@ -204,6 +204,10 @@ Device Drivers and Device Tree
                      <&rcc STM32_SRC_PLL1_Q FDCAN_SEL(1)>;
     };
 
+* Runtime configuration is now disabled by default for Nordic UART drivers. The motivation for the
+  change is that this feature is rarely used and disabling it significantly reduces the memory
+  footprint.
+
 Power Management
 ================
 
diff --git a/soc/arm/nordic_nrf/Kconfig.defconfig b/soc/arm/nordic_nrf/Kconfig.defconfig
index 3eedcf350c6..858c60d1d88 100644
--- a/soc/arm/nordic_nrf/Kconfig.defconfig
+++ b/soc/arm/nordic_nrf/Kconfig.defconfig
@@ -40,4 +40,7 @@ config GPIO
 	default y
 	depends on SPI
 
+config UART_USE_RUNTIME_CONFIGURE
+	default n
+
 endif # SOC_FAMILY_NRF