[PATCH 1/3] iio: adc: ltc2496: provide device tree binding document

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The ADC only requires the standard stuff for spi devices and a reference
voltage.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
---
 .../devicetree/bindings/iio/adc/ltc2496.txt       | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/ltc2496.txt

diff --git a/Documentation/devicetree/bindings/iio/adc/ltc2496.txt b/Documentation/devicetree/bindings/iio/adc/ltc2496.txt
new file mode 100644
index 000000000000..d44ab45b26ea
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/ltc2496.txt
@@ -0,0 +1,15 @@
+* Linear Technology / Analog Devices LTC2496 ADC
+
+Required properties:
+ - compatible: Must be "lltc,ltc2496"
+ - vref-supply: The regulator supply for ADC reference voltage
+ - further properties required for spi device nodes according to
+   Documentation/devicetree/bindings/spi/spi-controller.yaml
+
+Example:
+	ltc2497: adc@76 {
+		compatible = "lltc,ltc2496";
+		reg = <0>;
+		vref-supply = <&ltc249x_reg>;
+		spi-max-frequency = <2000000>;
+	};
-- 
2.24.0.rc1




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