diff --git a/arch/arm/boot/dts/socfpga_arria10_socdk_sdmmc.dts b/arch/arm/boot/dts/socfpga_arria10_socdk_sdmmc.dts
index 040a164ba148101594a83f0f61d3ac926f1783c1..5822fd2085dbf001618245b2b99e10bf570f6827 100644
--- a/arch/arm/boot/dts/socfpga_arria10_socdk_sdmmc.dts
+++ b/arch/arm/boot/dts/socfpga_arria10_socdk_sdmmc.dts
@@ -20,7 +20,6 @@
 
 &mmc {
 	status = "okay";
-	num-slots = <1>;
 	cap-sd-highspeed;
 	broken-cd;
 	bus-width = <4>;
diff --git a/arch/arm/boot/dts/socfpga_arria5.dtsi b/arch/arm/boot/dts/socfpga_arria5.dtsi
index 8c037297296c3c50586b62596842d958fbbd548a..e59461f5416e86826fb4aa9eb0d5f017f5abad5d 100644
--- a/arch/arm/boot/dts/socfpga_arria5.dtsi
+++ b/arch/arm/boot/dts/socfpga_arria5.dtsi
@@ -30,7 +30,6 @@
 		};
 
 		mmc0: dwmmc0@ff704000 {
-			num-slots = <1>;
 			broken-cd;
 			bus-width = <4>;
 			cap-mmc-highspeed;
diff --git a/arch/arm/boot/dts/socfpga_cyclone5.dtsi b/arch/arm/boot/dts/socfpga_cyclone5.dtsi
index a05e3df23103f78edefa919b792b491b324e77d4..68ced67f8bfb053a2a33d46bc513261c19b62938 100644
--- a/arch/arm/boot/dts/socfpga_cyclone5.dtsi
+++ b/arch/arm/boot/dts/socfpga_cyclone5.dtsi
@@ -31,7 +31,6 @@
 		};
 
 		mmc0: dwmmc0@ff704000 {
-			num-slots = <1>;
 			broken-cd;
 			bus-width = <4>;
 			cap-mmc-highspeed;
diff --git a/arch/arm/boot/dts/socfpga_vt.dts b/arch/arm/boot/dts/socfpga_vt.dts
index dfe2193cd4d5b5a657cbb4facbff90a1272fd966..547c38632c685b1bfb38dc4f10a8a3988c2913eb 100644
--- a/arch/arm/boot/dts/socfpga_vt.dts
+++ b/arch/arm/boot/dts/socfpga_vt.dts
@@ -42,7 +42,6 @@
 		};
 
 		dwmmc0@ff704000 {
-			num-slots = <1>;
 			broken-cd;
 			bus-width = <4>;
 			cap-mmc-highspeed;