diff --git a/arch/mips/dts/Makefile b/arch/mips/dts/Makefile
index b513918..30e5c68 100644
--- a/arch/mips/dts/Makefile
+++ b/arch/mips/dts/Makefile
@@ -2,6 +2,7 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
+dtb-$(CONFIG_TARGET_AP121) += ap121.dtb
 dtb-$(CONFIG_TARGET_PIC32MZDASK) += pic32mzda_sk.dtb
 
 targets += $(dtb-y)
diff --git a/arch/mips/dts/ap121.dts b/arch/mips/dts/ap121.dts
new file mode 100644
index 0000000..e31f601
--- /dev/null
+++ b/arch/mips/dts/ap121.dts
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2015-2016 Wills Wang <wills.wang@live.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/dts-v1/;
+#include "ar933x.dtsi"
+
+/ {
+	model = "AP121 Reference Board";
+	compatible = "qca,ap121", "qca,ar933x";
+
+	aliases {
+		spi0 = &spi0;
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+&xtal {
+	clock-frequency = <25000000>;
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&spi0 {
+	spi-max-frequency = <25000000>;
+	status = "okay";
+	spi-flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spi-flash";
+		memory-map = <0x9f000000 0x00800000>;
+		spi-max-frequency = <25000000>;
+		reg = <0>;
+	};
+};
diff --git a/arch/mips/dts/ar933x.dtsi b/arch/mips/dts/ar933x.dtsi
new file mode 100644
index 0000000..11f60a2
--- /dev/null
+++ b/arch/mips/dts/ar933x.dtsi
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2015-2016 Wills Wang <wills.wang@live.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include "skeleton.dtsi"
+
+/ {
+	compatible = "qca,ar933x";
+
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			device_type = "cpu";
+			compatible = "mips,mips24Kc";
+			reg = <0>;
+		};
+	};
+
+	clocks {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		xtal: xtal {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-output-names = "xtal";
+		};
+	};
+
+	pinctrl {
+		u-boot,dm-pre-reloc;
+		compatible = "qca,ar933x-pinctrl";
+		ranges;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		reg = <0x18040000 0x100>;
+	};
+
+	ahb {
+		compatible = "simple-bus";
+		ranges;
+
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		apb {
+			compatible = "simple-bus";
+			ranges;
+
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			uart0: uart@18020000 {
+				compatible = "qca,ar9330-uart";
+				reg = <0x18020000 0x20>;
+				interrupts = <128 IRQ_TYPE_LEVEL_HIGH>;
+
+				status = "disabled";
+			};
+		};
+
+		spi0: spi@1f000000 {
+			compatible = "qca,ar7100-spi";
+			reg = <0x1f000000 0x10>;
+			interrupts = <129 IRQ_TYPE_LEVEL_HIGH>;
+
+			status = "disabled";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+	};
+};
diff --git a/arch/mips/mach-ath79/Kconfig b/arch/mips/mach-ath79/Kconfig
index e35f1b5..c3012f8 100644
--- a/arch/mips/mach-ath79/Kconfig
+++ b/arch/mips/mach-ath79/Kconfig
@@ -22,4 +22,15 @@
 	help
 	  This supports QCA/Atheros qca953x family SOCs.
 
+choice
+	prompt "Board select"
+
+config TARGET_AP121
+	bool "AP121 Reference Board"
+	select SOC_AR933X
+
+endchoice
+
+source "board/qca/ap121/Kconfig"
+
 endmenu