diff --git a/arch/arm/boot/dts/microchip/at91sam9n12ek.dts b/arch/arm/boot/dts/microchip/at91sam9n12ek.dts
index 643c3b2ab97e..a27fcef28df5 100644
--- a/arch/arm/boot/dts/microchip/at91sam9n12ek.dts
+++ b/arch/arm/boot/dts/microchip/at91sam9n12ek.dts
@@ -80,6 +80,7 @@ &pinctrl_mmc0_slot0_clk_cmd_dat0
 					&pinctrl_mmc0_slot0_dat1_3>;
 				status = "okay";
 				slot@0 {
+					compatible = "mmc-slot";
 					reg = <0>;
 					bus-width = <4>;
 					cd-gpios = <&pioA 7 GPIO_ACTIVE_HIGH>;