diff --git a/arch/arm/boot/dts/ste-u300.dts b/arch/arm/boot/dts/ste-u300.dts
index d1ab4e91bfffc73b2da714bde954926f438c47ba..ae51dd10942287fa8d3b519a639f9b37c535fe2c 100644
--- a/arch/arm/boot/dts/ste-u300.dts
+++ b/arch/arm/boot/dts/ste-u300.dts
@@ -193,5 +193,19 @@
 			interrupt-parent = <&vicb>;
 			interrupts = <20>;
 		};
+
+		mmcsd: mmcsd@c0001000 {
+			compatible = "arm,pl18x", "arm,primecell";
+			reg = <0xc0001000 0x1000>;
+			interrupt-parent = <&vicb>;
+			interrupts = <6 7>;
+			max-frequency = <24000000>;
+			bus-width = <4>; // SD-card slot
+			mmc-cap-mmc-highspeed;
+			mmc-cap-sd-highspeed;
+			cd-gpios = <&gpio 12 0x4>;
+			cd-inverted;
+			vmmc-supply = <&ab3100_ldo_g_reg>;
+		};
 	};
 };