diff --git a/arch/arm/dts/r8a7790-lager-u-boot.dts b/arch/arm/dts/r8a7790-lager-u-boot.dts
index 8a37cb9d9a..fecf7e77ae 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 47982652e8..1396764d32 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 85a5290079..4a98528099 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 275f6b4375..82051be824 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 d8e072c36b..a35d35c335 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 e6ef23dda3..593a418c3b 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 0e104aa139..179753d7cf 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>;
+	};
+};