diff --git a/arch/arm/dts/fsl-ls1043a-rdb-u-boot.dtsi b/arch/arm/dts/fsl-ls1043a-rdb-u-boot.dtsi
new file mode 100644
index 0000000..ef31c79
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1043a-rdb-u-boot.dtsi
@@ -0,0 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright 2023 NXP */
+
+#include "fsl-ls1043a-u-boot.dtsi"
+
diff --git a/arch/arm/dts/fsl-ls1043a-u-boot.dtsi b/arch/arm/dts/fsl-ls1043a-u-boot.dtsi
new file mode 100644
index 0000000..65a8705
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1043a-u-boot.dtsi
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright 2023 NXP */
+
+&duart0 {
+	bootph-all;
+};
+
+&duart1 {
+	bootph-all;
+};
+
+&duart2 {
+	bootph-all;
+};
+
+&duart3 {
+	bootph-all;
+};
+