[PATCH v6 3/3] DT bindings documentation: "num-cs" property for SPI controllers

[Roland Stigge]

Several SPI controller drivers have defined differently named properties for
the number of chip selects.  Now adding "num-cs" as a reference name for new
bindings.

Signed-off-by: Roland Stigge <stigge at antcom.de>

---
 Documentation/devicetree/bindings/spi/spi-bus.txt |    3 +++
 1 file changed, 3 insertions(+)

--- linux-2.6.orig/Documentation/devicetree/bindings/spi/spi-bus.txt
+++ linux-2.6/Documentation/devicetree/bindings/spi/spi-bus.txt
@@ -21,6 +21,9 @@ assumption that board specific platform
 chip selects.  Individual drivers can define additional properties to
 support describing the chip select layout.
 
+Optional property:
+- num-cs : total number of chipselects
+
 SPI slave nodes must be children of the SPI master node and can
 contain the following properties.
 - reg             - (required) chip select address of device.