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[PATCH 2/3] dt: rfkill-gpio: add bindings documentation

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Add device tree bindings information for rfkill gpio switches.

Cc: linux-wireless@xxxxxxxxxxxxxxx
Cc: "John W. Linville" <linville@xxxxxxxxxxxxx>
Cc: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Cc: Rhyland Klein <rklein@xxxxxxxxxx>
Cc: Grant Likely <grant.likely@xxxxxxxxxxxx>
Cc: devicetree-discuss@xxxxxxxxxxxxxxxx
Signed-off-by: Marc Dietrich <marvin24@xxxxxx>
---
 Documentation/devicetree/bindings/gpio/rfkill.txt |   38 +++++++++++++++++++++
 1 files changed, 38 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/gpio/rfkill.txt

diff --git a/Documentation/devicetree/bindings/gpio/rfkill.txt b/Documentation/devicetree/bindings/gpio/rfkill.txt
new file mode 100644
index 0000000..22bf22a
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/rfkill.txt
@@ -0,0 +1,38 @@
+RFKILL switches connected to GPIO lines
+
+Required properties:
+- compatible : should be "rfkill-gpio".
+
+Each rfkill switch is represented as a sub-node of the rfkill-gpio device.
+Each node has a label property which represents the name of the corresponding
+rfkill device.
+
+RFKILL sub-node properties:
+- label :  (optional) The label for this rfkill switch.  If omitted, the label is
+  taken from the node name (excluding the unit address).
+- reset-gpio, shutdown-gpio :  Should specify the rfkill gpios for reset and
+  shutdown (see "Specifying GPIO information for devices" in
+  Documentation/devicetree/booting-without-of.txt).
+- type : enumerated type of the gpio (see include/linux/rfkill.h).
+- clock : (optional) name of the clock name associated with the rfkill switch
+  (see include/linux/rfkill-gpio.h)
+
+Examples:
+
+rfkill-switches {
+	compatible = "rfkill-gpio";
+
+	wifi {
+		label = "wifi";
+		reset-gpio = <&gpio 25 0>; /* Active high */
+		shutdown-gpio = <&gpio 85 0>; /* Active high */
+		type = <1>;
+	};
+
+	bt {
+		label = "bluetooth";
+		reset-gpio = <&gpio 17 0>; /* Active high */
+		shutdown-gpio = <&gpio 35 0>; /* Active high */
+		type = <1>;
+	};
+};
-- 
1.7.5.4

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