spi: xilinx: Add devicetree binding for spi-xilinx

Shubhrajyoti Datta · broonie · commit 82b3aea65f9f · 2016-03-10T10:31:21.000+07:00
Add a binding document for the spi/spi-xilinx

Signed-off-by: Shubhrajyoti Datta &lt;shubhraj@xilinx.com&gt;
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
diff --git a/Documentation/devicetree/bindings/spi/spi-xilinx.txt b/Documentation/devicetree/bindings/spi/spi-xilinx.txt
@@ -0,0 +1,22 @@
+Xilinx SPI controller Device Tree Bindings
+-------------------------------------------------
+
+Required properties:
+- compatible		: Should be "xlnx,xps-spi-2.00.a" or "xlnx,xps-spi-2.00.b"
+- reg			: Physical base address and size of SPI registers map.
+- interrupts		: Property with a value describing the interrupt
+			  number.
+- interrupt-parent	: Must be core interrupt controller
+
+Optional properties:
+- xlnx,num-ss-bits	: Number of chip selects used.
+
+Example:
+	axi_quad_spi@41e00000 {
+			compatible = "xlnx,xps-spi-2.00.a";
+			interrupt-parent = <&intc>;
+			interrupts = <0 31 1>;
+			reg = <0x41e00000 0x10000>;
+			xlnx,num-ss-bits = <0x1>;
+	};
+
