ARM: dts: rockchip: add rk3288 dma controllers

Add both the bus and peripheral pl330 dma controllers present in rk3288 socs.
The first dma controller can change between secure and non-secure mode. Both
instances are added but the non-secure variant is left disabled by default,
as on the majority of boards the bootloader leaves it in secure mode.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Kever Yang <kever.yang@rock-chips.com>

arch/arm/boot/dts/rk3288.dtsi

@@ -62,6 +62,44 @@ cpu@503 {
 		};
 	};
 
+	amba {
+		compatible = "arm,amba-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		dmac_peri: dma-controller@ff250000 {
+			compatible = "arm,pl330", "arm,primecell";
+			reg = <0xff250000 0x4000>;
+			interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
+			#dma-cells = <1>;
+			clocks = <&cru ACLK_DMAC2>;
+			clock-names = "apb_pclk";
+		};
+
+		dmac_bus_ns: dma-controller@ff600000 {
+			compatible = "arm,pl330", "arm,primecell";
+			reg = <0xff600000 0x4000>;
+			interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
+			#dma-cells = <1>;
+			clocks = <&cru ACLK_DMAC1>;
+			clock-names = "apb_pclk";
+			status = "disabled";
+		};
+
+		dmac_bus_s: dma-controller@ffb20000 {
+			compatible = "arm,pl330", "arm,primecell";
+			reg = <0xffb20000 0x4000>;
+			interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
+			#dma-cells = <1>;
+			clocks = <&cru ACLK_DMAC1>;
+			clock-names = "apb_pclk";
+		};
+	};
+
 	xin24m: oscillator {
 		compatible = "fixed-clock";
 		clock-frequency = <24000000>;