diff --git a/boards/arm/stm32mp157c_dk2/stm32mp157c_dk2.dts b/boards/arm/stm32mp157c_dk2/stm32mp157c_dk2.dts
index e2b44a1f002..1c4b4474e9a 100644
--- a/boards/arm/stm32mp157c_dk2/stm32mp157c_dk2.dts
+++ b/boards/arm/stm32mp157c_dk2/stm32mp157c_dk2.dts
@@ -49,6 +49,10 @@
 
 };
 
+&rcc {
+	clock-frequency = <DT_FREQ_M(209)>;
+};
+
 &spi4_miso_pe13{ slew-rate = "very-high-speed"; };
 
 &spi4{
diff --git a/boards/arm/stm32mp157c_dk2/stm32mp157c_dk2_defconfig b/boards/arm/stm32mp157c_dk2/stm32mp157c_dk2_defconfig
index 6695a292855..9c8d92a3dcc 100644
--- a/boards/arm/stm32mp157c_dk2/stm32mp157c_dk2_defconfig
+++ b/boards/arm/stm32mp157c_dk2/stm32mp157c_dk2_defconfig
@@ -1,7 +1,5 @@
 CONFIG_SOC_SERIES_STM32MP1X=y
 CONFIG_SOC_STM32MP15_M4=y
-# 209 MHz system clock (mlhclk_ck)
-CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=209000000
 
 # enable GPIO
 CONFIG_GPIO=y