diff --git a/dts/upstream/src/arm64/allwinner/sun50i-a100.dtsi b/dts/upstream/src/arm64/allwinner/sun50i-a100.dtsi
index f9f6fea03b7..bd366389b23 100644
--- a/dts/upstream/src/arm64/allwinner/sun50i-a100.dtsi
+++ b/dts/upstream/src/arm64/allwinner/sun50i-a100.dtsi
@@ -252,6 +252,7 @@
 			interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&mmc0_pins>;
+			max-frequency = <150000000>;
 			status = "disabled";
 			#address-cells = <1>;
 			#size-cells = <0>;
@@ -267,6 +268,7 @@
 			interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&mmc1_pins>;
+			max-frequency = <150000000>;
 			status = "disabled";
 			#address-cells = <1>;
 			#size-cells = <0>;
@@ -282,6 +284,7 @@
 			interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&mmc2_pins>;
+			max-frequency = <150000000>;
 			status = "disabled";
 			#address-cells = <1>;
 			#size-cells = <0>;