diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
index a1ee4197129aa1ff9411b65b5833f780ab09e6d2..04c997735c32e528ab5b896098fef592275af221 100644
--- a/arch/arm/boot/dts/sun7i-a20.dtsi
+++ b/arch/arm/boot/dts/sun7i-a20.dtsi
@@ -871,6 +871,7 @@ spi0: spi@01c05000 {
 			status = "disabled";
 			#address-cells = <1>;
 			#size-cells = <0>;
+			num-cs = <4>;
 		};
 
 		spi1: spi@01c06000 {
@@ -885,6 +886,7 @@ spi1: spi@01c06000 {
 			status = "disabled";
 			#address-cells = <1>;
 			#size-cells = <0>;
+			num-cs = <1>;
 		};
 
 		emac: ethernet@01c0b000 {
@@ -1037,6 +1039,7 @@ spi2: spi@01c17000 {
 			status = "disabled";
 			#address-cells = <1>;
 			#size-cells = <0>;
+			num-cs = <1>;
 		};
 
 		ahci: sata@01c18000 {
@@ -1079,6 +1082,7 @@ spi3: spi@01c1f000 {
 			status = "disabled";
 			#address-cells = <1>;
 			#size-cells = <0>;
+			num-cs = <1>;
 		};
 
 		pio: pinctrl@01c20800 {