diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
index 5268a4321841..d7cb05d534ac 100644
--- a/arch/arm64/boot/dts/st/stm32mp251.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi
@@ -119,6 +119,19 @@ usart2: serial@400e0000 {
 				clocks = <&ck_flexgen_08>;
 				status = "disabled";
 			};
+
+			sdmmc1: mmc@48220000 {
+				compatible = "st,stm32mp25-sdmmc2", "arm,pl18x", "arm,primecell";
+				arm,primecell-periphid = <0x00353180>;
+				reg = <0x48220000 0x400>, <0x44230400 0x8>;
+				interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&ck_flexgen_51>;
+				clock-names = "apb_pclk";
+				cap-sd-highspeed;
+				cap-mmc-highspeed;
+				max-frequency = <120000000>;
+				status = "disabled";
+			};
 		};
 
 		syscfg: syscon@44230000 {