diff --git a/target/linux/ath79/dts/ar9331_hiwifi_hc6361.dts b/target/linux/ath79/dts/ar9331_hiwifi_hc6361.dts
index 10b6051c3b..35eb59616c 100644
--- a/target/linux/ath79/dts/ar9331_hiwifi_hc6361.dts
+++ b/target/linux/ath79/dts/ar9331_hiwifi_hc6361.dts
@@ -61,7 +61,6 @@
 
 &spi {
 	status = "okay";
-	num-cs = <1>;
 
 	flash@0 {
 		compatible = "jedec,spi-nor";
diff --git a/target/linux/ath79/dts/qca9531_teltonika_rut300.dts b/target/linux/ath79/dts/qca9531_teltonika_rut300.dts
index 497cb6f43c..0a2df38b8c 100644
--- a/target/linux/ath79/dts/qca9531_teltonika_rut300.dts
+++ b/target/linux/ath79/dts/qca9531_teltonika_rut300.dts
@@ -64,7 +64,6 @@
 
 &spi {
 	status = "okay";
-	num-cs = <1>;
 
 	flash@0 {
 		compatible = "jedec,spi-nor";
diff --git a/target/linux/ath79/dts/qca9563_tplink_deco-m4r-v1.dts b/target/linux/ath79/dts/qca9563_tplink_deco-m4r-v1.dts
index 088ef7b63c..1f8ded0c14 100644
--- a/target/linux/ath79/dts/qca9563_tplink_deco-m4r-v1.dts
+++ b/target/linux/ath79/dts/qca9563_tplink_deco-m4r-v1.dts
@@ -81,7 +81,6 @@
 
 &spi {
 	status = "okay";
-	num-cs = <1>;
 
 	flash@0 {
 		compatible = "jedec,spi-nor";
diff --git a/target/linux/ath79/dts/qca9563_tplink_deco-s4-v2.dts b/target/linux/ath79/dts/qca9563_tplink_deco-s4-v2.dts
index 147a880de8..69d97f6e46 100644
--- a/target/linux/ath79/dts/qca9563_tplink_deco-s4-v2.dts
+++ b/target/linux/ath79/dts/qca9563_tplink_deco-s4-v2.dts
@@ -81,7 +81,6 @@
 
 &spi {
 	status = "okay";
-	num-cs = <1>;
 
 	flash@0 {
 		compatible = "jedec,spi-nor";