[PATCH 3/3] dt: Document Holt descrete ADC bindings

[Vladimir Barinov]

These bindings can be used to register Holt HI-8435/8436/8437 descrete ADC

Signed-off-by: Vladimir Barinov <vladimir.barinov@xxxxxxxxxxxxxxxxxx>
---
 .../devicetree/bindings/iio/adc/hi-843x.txt        | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/hi-843x.txt

diff --git a/Documentation/devicetree/bindings/iio/adc/hi-843x.txt b/Documentation/devicetree/bindings/iio/adc/hi-843x.txt
new file mode 100644
index 0000000..872e801
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/hi-843x.txt
@@ -0,0 +1,27 @@
+Holt Integrated Circuits HI-8435/8436/8437 discrete ADC bindings
+
+Required properties:
+ - compatible: Should be "holt,hi-8435" or "holt,hi-8436" or "holt,hi-8437"
+ - reg: spi chip select number for the device
+
+Recommended properties:
+ - spi-max-frequency: Definition as per
+		Documentation/devicetree/bindings/spi/spi-bus.txt
+
+Optional properties:
+ - holt,mr-gpio: GPIO used for controlling the MR (chip reset) pin
+ - holt,debounce-soft: enable software debounce at startup
+ - holt,debounce-soft-delay: software debounce interval in milliseconds
+
+Example:
+adc@0 {
+	compatible = "holt,hi-8435";
+	reg = <0>;
+
+	holt,mr-gpio = <&gpio6 1 0>;
+
+	holt,debounce-soft;
+	holt,debounce-soft-delay = <100>;
+
+	spi-max-frequency = <1000000>;
+};
-- 
1.9.1

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