EXYNOS5: FDT: Add SPI device node data

Add SPI device node data for exynos.

Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

arch/arm/dts/exynos5250.dtsi

@@ -97,4 +97,45 @@
 		compatible = "samsung,exynos-sound";
 		reg = <0x12d60000 0x20>;
 	};
+
+	spi@12d20000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,exynos-spi";
+		reg = <0x12d20000 0x30>;
+		interrupts = <0 68 0>;
+	};
+
+	spi@12d30000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,exynos-spi";
+		reg = <0x12d30000 0x30>;
+		interrupts = <0 69 0>;
+	};
+
+	spi@12d40000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,exynos-spi";
+		reg = <0x12d40000 0x30>;
+		clock-frequency = <50000000>;
+		interrupts = <0 70 0>;
+        };
+
+	spi@131a0000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,exynos-spi";
+		reg = <0x131a0000 0x30>;
+		interrupts = <0 129 0>;
+	};
+
+	spi@131b0000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,exynos-spi";
+		reg = <0x131b0000 0x30>;
+		interrupts = <0 130 0>;
+	};
 };

doc/device-tree-bindings/exynos/isp-spi.txt

@@ -0,0 +1,22 @@
+Exynos ISP SPI Subsystem
+
+The device node for ISP SPI subsytem.
+Since Peripheral id in EXYNOS is decoded based on Interrupts, currently
+ISP SPI have no individual interrupts hence we add ad dummy interrupt node
+which will have a value beyond the maximum number of interrupts exynos5 can
+support.
+
+Required properties :
+ - compatible : Should be "samsung,exynos-spi" for spi.
+ - reg : Base adrress of the the subsystem.
+ - interrupts : A value which is beyond the maximum number of interrupts
+exynos5 can support.
+
+Example:
+spi@131a0000 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	compatible = "samsung,exynos-spi";
+	reg = <0x131a0000 0x30>;
+	interrupts = <0 129 0>;
+};