armv8: ls2080ardb: Add LS2081ARDB board support

LS2081ARDB board is similar to LS2080ARDB board with few differences
 It hosts LS2081A SoC
 Default boot source is QSPI-boot
 It does not have IFC interface
 RTC and QSPI flash device are different
 It provides QIXIS access via I2C

Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Signed-off-by: Santan Kumar <santan.kumar@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/dts/fsl-ls2081a-rdb.dts b/arch/arm/dts/fsl-ls2081a-rdb.dts
new file mode 100644
index 0000000..6489362
--- /dev/null
+++ b/arch/arm/dts/fsl-ls2081a-rdb.dts
@@ -0,0 +1,59 @@
+/*
+ * NXP LS2081A RDB board device tree source for QSPI-boot
+ *
+ * Author: Priyanka Jain <priyanka.jain@nxp.com>
+ *
+ * Copyright 2017 NXP
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/dts-v1/;
+
+#include "fsl-ls2080a.dtsi"
+
+/ {
+	model = "Freescale Layerscape 2081a RDB Board";
+	compatible = "fsl,ls2081a-rdb", "fsl,ls2080a";
+
+	aliases {
+		spi0 = &qspi;
+		spi1 = &dspi;
+	};
+};
+
+&dspi {
+	bus-num = <0>;
+	status = "okay";
+
+	dflash0: n25q512a {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spi-flash";
+		spi-max-frequency = <3000000>;
+		spi-cpol;
+		spi-cpha;
+		reg = <0>;
+	};
+};
+
+&qspi {
+	bus-num = <0>;
+	status = "okay";
+
+	qflash0: n25q512a@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spi-flash";
+		spi-max-frequency = <50000000>;
+		reg = <0>;
+	};
+
+	qflash1: n25q512a@1 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spi-flash";
+		spi-max-frequency = <50000000>;
+		reg = <1>;
+	};
+};