diff --git a/arch/arm/boot/dts/stm32mp157d-ev1.dts b/arch/arm/boot/dts/stm32mp157d-ev1.dts
index 59607bdac82d9f..e0338e6fd51efe 100644
--- a/arch/arm/boot/dts/stm32mp157d-ev1.dts
+++ b/arch/arm/boot/dts/stm32mp157d-ev1.dts
@@ -197,6 +197,7 @@
 			hsync-active = <0>;
 			vsync-active = <0>;
 			pclk-sample = <1>;
+			pclk-max-frequency = <77000000>;
 		};
 	};
 };
@@ -456,6 +457,7 @@
 				hsync-active = <0>;
 				vsync-active = <0>;
 				pclk-sample = <1>;
+				pclk-max-frequency = <77000000>;
 			};
 		};
 	};