Document iio provider and consumer bindings.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
---
.../devicetree/bindings/iio/iio-bindings.txt | 37 ++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/Documentation/devicetree/bindings/iio/iio-bindings.txt b/Documentation/devicetree/bindings/iio/iio-bindings.txt
index 68d6f8c..3125390 100644
--- a/Documentation/devicetree/bindings/iio/iio-bindings.txt
+++ b/Documentation/devicetree/bindings/iio/iio-bindings.txt
@@ -95,3 +95,40 @@ vdd channel is connected to output 0 of the &ref device.
io-channels = <&adc 10>, <&adc 11>;
io-channel-names = "adc1", "adc2";
};
+
+==IIO trigger providers==
+Sources of IIO triggers can be represented by any node in the device
+tree. Those nodes are designated as IIO trigger providers. IIO trigger
+consumer uses a phandle and an IIO trigger specifier to connect to an
+IIO trigger provider.
+An IIO trigger specifier is an array of one or more cells identifying
+the IIO trigger output on a device. The length of an IIO trigger
+specifier is defined by the value of a #io-trigger-cells property in
+the IIO trigger provider node.
+
+Required properties:
+#io-trigger-cells:
+ Number of cells in an IIO trigger specifier; Typically
+ 0 for nodes with a simple IIO trigger output.
+
+Example:
+ gpiotrig0: iio-gpio-trigger0 {
+ #io-trigger-cells = <0>;
+ compatible = "iio-gpio-trigger";
+ gpios = <&gpioa 11 0>;
+ }
+
+==IIO trigger consumers==
+Required properties:
+- io-triggers: List of phandle representing the IIO trigger specifier.
+
+Optional properties:
+- io-trigger-names :
+ List of IIO trigger name strings that matches elements
+ in 'io-triggers' list property.
+
+Example:
+ some_trigger_consumer {
+ io-triggers = <&gpiotrig0>;
+ io-trigger-names = "mytrig";
+ }
--
1.9.1
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