diff --git a/arch/arm/dts/stm32f746-disco.dts b/arch/arm/dts/stm32f746-disco.dts
index 2c7fa79..c92c2e2 100644
--- a/arch/arm/dts/stm32f746-disco.dts
+++ b/arch/arm/dts/stm32f746-disco.dts
@@ -195,7 +195,6 @@
 	pinctrl-names = "default";
 	status = "okay";
 
-	mr-nbanks = <1>;
 	/* Memory configuration from sdram datasheet MT48LC_4M32_B2B5-6A */
 	bank1: bank@0 {
 	       st,sdram-control = /bits/ 8 <NO_COL_8 NO_ROW_12 MWIDTH_16 BANKS_4
diff --git a/arch/arm/dts/stm32f769-disco.dts b/arch/arm/dts/stm32f769-disco.dts
index 6591cc8..f34ffcc 100644
--- a/arch/arm/dts/stm32f769-disco.dts
+++ b/arch/arm/dts/stm32f769-disco.dts
@@ -209,7 +209,6 @@
 	pinctrl-names = "default";
 	status = "okay";
 
-	mr-nbanks = <1>;
 	/* Memory configuration from sdram datasheet MT48LC_4M32_B2B5-6A */
 	bank1: bank@0 {
 	       st,sdram-control = /bits/ 8 <NO_COL_8 NO_ROW_12 MWIDTH_32 BANKS_4