[RFCv2 4/5] Documentation: DT: Document twl4030-madc binding

[Sebastian Reichel]

Add devicetree binding documentation for twl4030-madc
analog digital converter.

Signed-off-by: Sebastian Reichel <sre@xxxxxxxxxx>
---
 .../devicetree/bindings/iio/adc/twl4030-madc.txt   | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/twl4030-madc.txt

diff --git a/Documentation/devicetree/bindings/iio/adc/twl4030-madc.txt b/Documentation/devicetree/bindings/iio/adc/twl4030-madc.txt
new file mode 100644
index 0000000..6bdd214
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/twl4030-madc.txt
@@ -0,0 +1,24 @@
+* TWL4030 Monitoring Analog to Digital Converter (MADC)
+
+The MADC subsystem in the TWL4030 consists of a 10-bit ADC
+combined with a 16-input analog multiplexer.
+
+Required properties:
+  - compatible: Should contain "ti,twl4030-madc".
+  - interrupts: IRQ line for the MADC submodule.
+  - #io-channel-cells: Should be set to <1>.
+
+Optional properties:
+  - ti,system-uses-second-madc-irq: boolean, set if the second madc irq register
+				    should be used, which is intended to be used
+				    by Co-Processors (e.g. a modem).
+
+Example:
+
+&twl {
+	madc {
+		compatible = "ti,twl4030-madc";
+		interrupts = <3>;
+		#io-channel-cells = <1>;
+	};
+};
-- 
1.8.5.3

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