diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
index 12e702771f5c..3bb20e0a81f2 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
@@ -778,6 +778,8 @@ mmsys: clock-controller@14000000 {
 			compatible = "mediatek,mt8173-mmsys", "syscon";
 			reg = <0 0x14000000 0 0x1000>;
 			power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
+			assigned-clocks = <&topckgen CLK_TOP_MM_SEL>;
+			assigned-clock-rates = <400000000>;
 			#clock-cells = <1>;
 		};