Signed-off-by: Graham Moore <[email protected]>
---
.../devicetree/bindings/mtd/cadence_quadspi.txt | 30 ++++++++++++++++++++
1 file changed, 30 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mtd/cadence_quadspi.txt
diff --git a/Documentation/devicetree/bindings/mtd/cadence_quadspi.txt
b/Documentation/devicetree/bindings/mtd/cadence_quadspi.txt
new file mode 100644
index 0000000..0064fc3
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/cadence_quadspi.txt
@@ -0,0 +1,30 @@
+* Cadence Quad SPI controller
+
+Required properties:
+- compatible : Should be "cdns,qspi-nor".
+- reg : Contains two entries, each of which is a tuple consisting of a
+ physical address and length. The first entry is the address and
+ length of the controller register set. The second entry is the
+ address and length of the QSPI Controller data area.
+- interrupts : Unit interrupt specifier for the controller interrupt.
+- ext-decoder : Value of 0 means no external chipselect decoder is
+ connected, 1 means there is an external chipselect decoder connected.
+- num-chipselect : Number of chip select lines.
+- fifo-depth : Size of the data FIFO in words.
+- bus-num : Number of the SPI bus to which the controller is connected.
+
+Example:
+
+ qspi: spi@ff705000 {
+ compatible = "cdns,qspi-nor";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0xff705000 0x1000>,
+ <0xffa00000 0x1000>;
+ interrupts = <0 151 4>;
+ clocks = <&qspi_clk>;
+ ext-decoder = <0>;
+ num-chipselect = <4>;
+ fifo-depth = <128>;
+ bus-num = <2>;
+ }
--
1.7.9.5
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