diff --git a/arch/arm/dts/zynqmp-zcu100-revC.dts b/arch/arm/dts/zynqmp-zcu100-revC.dts
index 6aa0cf1ed1..a9ef131500 100644
--- a/arch/arm/dts/zynqmp-zcu100-revC.dts
+++ b/arch/arm/dts/zynqmp-zcu100-revC.dts
@@ -506,6 +506,7 @@
 &spi0 { /* Low Speed connector */
 	status = "okay";
 	label = "LS-SPI0";
+	num-cs = <1>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_spi0_default>;
 };
@@ -513,6 +514,7 @@
 &spi1 { /* High Speed connector */
 	status = "okay";
 	label = "HS-SPI1";
+	num-cs = <1>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_spi1_default>;
 };