diff --git a/fdts/stm32mp257f-ev1.dts b/fdts/stm32mp257f-ev1.dts
index 09e83d8..88cefa0 100644
--- a/fdts/stm32mp257f-ev1.dts
+++ b/fdts/stm32mp257f-ev1.dts
@@ -35,6 +35,25 @@
 	};
 };
 
+&sdmmc1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdmmc1_b4_pins_a>;
+	st,neg-edge;
+	bus-width = <4>;
+	status = "okay";
+};
+
+&sdmmc2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdmmc2_b4_pins_a &sdmmc2_d47_pins_a>;
+	non-removable;
+	no-sd;
+	no-sdio;
+	st,neg-edge;
+	bus-width = <8>;
+	status = "okay";
+};
+
 &usart2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&usart2_pins_a>;