Documentation: dt: wireless: Add wl1251

Add device tree binding documentation for Texas Instrument's wl1251
wireless lan chip. For now only the SPI binding is documented.

Signed-off-by: Sebastian Reichel <sre@debian.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/Documentation/devicetree/bindings/net/wireless/ti,wl1251.txt b/Documentation/devicetree/bindings/net/wireless/ti,wl1251.txt
new file mode 100644 (file)
index 0000000..189ae5c
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+++ b/Documentation/devicetree/bindings/net/wireless/ti,wl1251.txt
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+* Texas Instruments wl1251 wireless lan controller
+
+The wl1251 chip can be connected via SPI or via SDIO. This
+document describes the binding for the SPI connected chip.
+
+Required properties:
+- compatible :        Should be "ti,wl1251"
+- reg :               Chip select address of device
+- spi-max-frequency : Maximum SPI clocking speed of device in Hz
+- interrupts :        Should contain interrupt line
+- interrupt-parent :  Should be the phandle for the interrupt controller
+                      that services interrupts for this device
+- vio-supply :        phandle to regulator providing VIO
+- ti,power-gpio :     GPIO connected to chip's PMEN pin
+
+Optional properties:
+- ti,wl1251-has-eeprom : boolean, the wl1251 has an eeprom connected, which
+                         provides configuration data (calibration, MAC, ...)
+- Please consult Documentation/devicetree/bindings/spi/spi-bus.txt
+  for optional SPI connection related properties,
+
+Examples:
+
+&spi1 {
+       wl1251@0 {
+               compatible = "ti,wl1251";
+
+               reg = <0>;
+               spi-max-frequency = <48000000>;
+               spi-cpol;
+               spi-cpha;
+
+               interrupt-parent = <&gpio2>;
+               interrupts = <10 IRQ_TYPE_NONE>; /* gpio line 42 */
+
+               vio-supply = <&vio>;
+               ti,power-gpio = <&gpio3 23 GPIO_ACTIVE_HIGH>; /* 87 */
+       };
+};