[PATCH v6 1/3] Documentation: dt: net: add ath9k wireless device binding

[Martin Blumenstingl <martin.blumenstingl@googlemail.com>]

Add documentation how devicetree can be used to configure ath9k based
devices.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 .../devicetree/bindings/net/wireless/qca,ath9k.txt | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/wireless/qca,ath9k.txt

diff --git a/Documentation/devicetree/bindings/net/wireless/qca,ath9k.txt b/Documentation/devicetree/bindings/net/wireless/qca,ath9k.txt
new file mode 100644
index 0000000..77b9202
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/wireless/qca,ath9k.txt
@@ -0,0 +1,39 @@
+* Qualcomm Atheros ath9k wireless devices
+
+This node provides properties for configuring the ath9k wireless device. The
+node is expected to be specified as a child node of the PCI controller to
+which the wireless chip is connected.
+
+Required properties:
+- compatible: For PCI and PCIe devices this should be an identifier following
+		the format as defined in "PCI Bus Binding to Open Firmware"
+		Revision 2.1. One of the possible formats is "pciVVVV,DDDD"
+		where VVVV is the PCI vendor ID and DDDD is PCI device ID.
+
+Optional properties:
+- reg: Address and length of the register set for the device.
+- qca,clk-25mhz: Defines that a 25MHz clock is used
+- qca,no-eeprom: Indicates that there is no physical EEPROM connected to the
+			ath9k wireless chip (in this case the calibration /
+			EEPROM data will be loaded from userspace using the
+			kernel firmware loader).
+- qca,disable-2ghz: Overrides the settings from the EEPROM and disables the
+			2.4GHz band. Setting this property is only needed
+			when the RF circuit does not support the 2.4GHz band
+			while it is enabled nevertheless in the EEPROM.
+- qca,disable-5ghz: Overrides the settings from the EEPROM and disables the
+			5GHz band. Setting this property is only needed when
+			the RF circuit does not support the 5GHz band while
+			it is enabled nevertheless in the EEPROM.
+- mac-address: See ethernet.txt in the parent directory
+- local-mac-address: See ethernet.txt in the parent directory
+
+
+In this example, the node is defined as child node of the PCI controller:
+&pci0 {
+	ath9k@168c,002d {
+		compatible = "pci168c,002d";
+		reg = <0x7000 0 0 0 0x1000>;
+		qca,disable-5ghz;
+	};
+};
-- 
2.9.3