diff --git a/boards/arm/ip_k66f/ip_k66f.dts b/boards/arm/ip_k66f/ip_k66f.dts
index 10416e1125f..f53369cb5e5 100644
--- a/boards/arm/ip_k66f/ip_k66f.dts
+++ b/boards/arm/ip_k66f/ip_k66f.dts
@@ -45,6 +45,14 @@
 &sim {
 	pllfll-select = <KINETIS_SIM_PLLFLLSEL_MCGPLLCLK>;
 	er32k-select = <KINETIS_SIM_ER32KSEL_RTC>;
+
+	bus_clk {
+		clock-div = <3>;
+	};
+
+	flash_clk {
+		clock-div = <7>;
+	};
 };
 
 &gpioa {
diff --git a/boards/arm/ip_k66f/ip_k66f_defconfig b/boards/arm/ip_k66f/ip_k66f_defconfig
index 29c4e30430c..406deae4273 100644
--- a/boards/arm/ip_k66f/ip_k66f_defconfig
+++ b/boards/arm/ip_k66f/ip_k66f_defconfig
@@ -8,9 +8,6 @@ CONFIG_GPIO=y
 CONFIG_PINMUX=y
 CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=180000000
 CONFIG_OSC_LOW_POWER=y
-CONFIG_K6X_BUS_CLOCK_DIVIDER=3
-CONFIG_K6X_FLEXBUS_CLOCK_DIVIDER=3
-CONFIG_K6X_FLASH_CLOCK_DIVIDER=7
 CONFIG_USE_SEGGER_RTT=y
 
 # Add RTT console support