diff --git a/target/linux/ath79/dts/ar9330_dlink_dir-505.dts b/target/linux/ath79/dts/ar9330_dlink_dir-505.dts
index 15e29f552e..574165b748 100644
--- a/target/linux/ath79/dts/ar9330_dlink_dir-505.dts
+++ b/target/linux/ath79/dts/ar9330_dlink_dir-505.dts
@@ -88,7 +88,6 @@
 };
 
 &spi {
-	num-chipselects = <1>;
 	status = "okay";
 
 	flash@0 {
diff --git a/target/linux/ath79/dts/ar9330_glinet_gl-ar150.dts b/target/linux/ath79/dts/ar9330_glinet_gl-ar150.dts
index 26b3b3f04c..20c9a8fdd4 100644
--- a/target/linux/ath79/dts/ar9330_glinet_gl-ar150.dts
+++ b/target/linux/ath79/dts/ar9330_glinet_gl-ar150.dts
@@ -79,8 +79,6 @@
 &spi {
 	status = "okay";
 
-	num-chipselects = <1>;
-
 	flash@0 {
 		compatible = "jedec,spi-nor";
 		spi-max-frequency = <50000000>;
diff --git a/target/linux/ath79/dts/ar9331_8dev_carambola2.dts b/target/linux/ath79/dts/ar9331_8dev_carambola2.dts
index 85e70495fc..42193f857c 100644
--- a/target/linux/ath79/dts/ar9331_8dev_carambola2.dts
+++ b/target/linux/ath79/dts/ar9331_8dev_carambola2.dts
@@ -63,7 +63,6 @@
 };
 
 &spi {
-	num-chipselects = <0>;
 	status = "okay";
 
 	flash@0 {
diff --git a/target/linux/ath79/dts/ar9331_embeddedwireless_dorin.dts b/target/linux/ath79/dts/ar9331_embeddedwireless_dorin.dts
index 9303121408..12f1e93d44 100644
--- a/target/linux/ath79/dts/ar9331_embeddedwireless_dorin.dts
+++ b/target/linux/ath79/dts/ar9331_embeddedwireless_dorin.dts
@@ -59,8 +59,6 @@
 &spi {
 	status = "okay";
 
-	num-chipselects = <1>;
-
 	flash@0 {
 		compatible = "jedec,spi-nor";
 		spi-max-frequency = <50000000>;
diff --git a/target/linux/ath79/dts/ar9331_etactica_eg200.dts b/target/linux/ath79/dts/ar9331_etactica_eg200.dts
index 0d7b7cfb84..e6feb54fcd 100644
--- a/target/linux/ath79/dts/ar9331_etactica_eg200.dts
+++ b/target/linux/ath79/dts/ar9331_etactica_eg200.dts
@@ -83,7 +83,6 @@
 };
 
 &spi {
-	num-chipselects = <1>;
 	status = "okay";
 
 	flash@0 {
diff --git a/target/linux/ath79/dts/ar9331_glinet_gl-mifi.dts b/target/linux/ath79/dts/ar9331_glinet_gl-mifi.dts
index d62bdd9d67..67b587ab6e 100644
--- a/target/linux/ath79/dts/ar9331_glinet_gl-mifi.dts
+++ b/target/linux/ath79/dts/ar9331_glinet_gl-mifi.dts
@@ -87,8 +87,6 @@
 &spi {
 	status = "okay";
 
-	num-chipselects = <1>;
-
 	flash@0 {
 		compatible = "jedec,spi-nor";
 		spi-max-frequency = <33000000>;
diff --git a/target/linux/ath79/dts/ar9331_tplink_tl-mr3020-v1.dts b/target/linux/ath79/dts/ar9331_tplink_tl-mr3020-v1.dts
index 7c52ae1617..e9533553a1 100644
--- a/target/linux/ath79/dts/ar9331_tplink_tl-mr3020-v1.dts
+++ b/target/linux/ath79/dts/ar9331_tplink_tl-mr3020-v1.dts
@@ -110,8 +110,6 @@
 &spi {
 	status = "okay";
 
-	num-chipselects = <1>;
-
 	/* Spansion S25FL032PIF SPI flash */
 	flash@0 {
 		compatible = "jedec,spi-nor";
diff --git a/target/linux/ath79/dts/ar9331_tplink_tl-mr3040-v2.dts b/target/linux/ath79/dts/ar9331_tplink_tl-mr3040-v2.dts
index da04aad6cb..c5f7a4fe76 100644
--- a/target/linux/ath79/dts/ar9331_tplink_tl-mr3040-v2.dts
+++ b/target/linux/ath79/dts/ar9331_tplink_tl-mr3040-v2.dts
@@ -106,8 +106,6 @@
 &spi {
 	status = "okay";
 
-	num-chipselects = <1>;
-
 	flash@0 {
 		compatible = "jedec,spi-nor";
 		spi-max-frequency = <50000000>;
diff --git a/target/linux/ath79/dts/ar9344_zbtlink_zbt-wd323.dts b/target/linux/ath79/dts/ar9344_zbtlink_zbt-wd323.dts
index f2cb35eae9..5f24bf23d6 100644
--- a/target/linux/ath79/dts/ar9344_zbtlink_zbt-wd323.dts
+++ b/target/linux/ath79/dts/ar9344_zbtlink_zbt-wd323.dts
@@ -97,7 +97,6 @@
 };
 
 &spi {
-	num-chipselects = <1>;
 	status = "okay";
 
 	flash@0 {