diff --git a/arch/arm/dts/r8a7790-lager-u-boot.dts b/arch/arm/dts/r8a7790-lager-u-boot.dts
index 8a37cb9..fecf7e7 100644
--- a/arch/arm/dts/r8a7790-lager-u-boot.dts
+++ b/arch/arm/dts/r8a7790-lager-u-boot.dts
@@ -11,3 +11,10 @@
 &scif0 {
 	u-boot,dm-pre-reloc;
 };
+
+&qspi {
+	flash@0 {
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};
diff --git a/arch/arm/dts/r8a7790-stout-u-boot.dts b/arch/arm/dts/r8a7790-stout-u-boot.dts
index 4798265..1396764 100644
--- a/arch/arm/dts/r8a7790-stout-u-boot.dts
+++ b/arch/arm/dts/r8a7790-stout-u-boot.dts
@@ -11,3 +11,10 @@
 &scifa0 {
 	u-boot,dm-pre-reloc;
 };
+
+&qspi {
+	flash@0 {
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};
diff --git a/arch/arm/dts/r8a7791-koelsch-u-boot.dts b/arch/arm/dts/r8a7791-koelsch-u-boot.dts
index 85a5290..4a98528 100644
--- a/arch/arm/dts/r8a7791-koelsch-u-boot.dts
+++ b/arch/arm/dts/r8a7791-koelsch-u-boot.dts
@@ -11,3 +11,10 @@
 &scif0 {
 	u-boot,dm-pre-reloc;
 };
+
+&qspi {
+	flash@0 {
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};
diff --git a/arch/arm/dts/r8a7791-porter-u-boot.dts b/arch/arm/dts/r8a7791-porter-u-boot.dts
index 275f6b4..82051be 100644
--- a/arch/arm/dts/r8a7791-porter-u-boot.dts
+++ b/arch/arm/dts/r8a7791-porter-u-boot.dts
@@ -16,3 +16,10 @@
 	status = "okay";
 	clock-frequency = <400000>;
 };
+
+&qspi {
+	flash@0 {
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};
diff --git a/arch/arm/dts/r8a7793-gose-u-boot.dts b/arch/arm/dts/r8a7793-gose-u-boot.dts
index d8e072c..a35d35c 100644
--- a/arch/arm/dts/r8a7793-gose-u-boot.dts
+++ b/arch/arm/dts/r8a7793-gose-u-boot.dts
@@ -11,3 +11,10 @@
 &scif0 {
 	u-boot,dm-pre-reloc;
 };
+
+&qspi {
+	flash@0 {
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};
diff --git a/arch/arm/dts/r8a7794-alt-u-boot.dts b/arch/arm/dts/r8a7794-alt-u-boot.dts
index e6ef23d..593a418 100644
--- a/arch/arm/dts/r8a7794-alt-u-boot.dts
+++ b/arch/arm/dts/r8a7794-alt-u-boot.dts
@@ -11,3 +11,10 @@
 &scif2 {
 	u-boot,dm-pre-reloc;
 };
+
+&qspi {
+	flash@0 {
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};
diff --git a/arch/arm/dts/r8a7794-silk-u-boot.dts b/arch/arm/dts/r8a7794-silk-u-boot.dts
index 0e104aa..179753d 100644
--- a/arch/arm/dts/r8a7794-silk-u-boot.dts
+++ b/arch/arm/dts/r8a7794-silk-u-boot.dts
@@ -11,3 +11,10 @@
 &scif2 {
 	u-boot,dm-pre-reloc;
 };
+
+&qspi {
+	flash@0 {
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};