Document the devicetree bindings for the adcxx.
Signed-off-by: Florian Eckert <fe@xxxxxxxxxx>
---
Documentation/devicetree/bindings/hwmon/adcxx.txt | 24 +++++++++++++++++++++++
1 file changed, 24 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/adcxx.txt
diff --git a/Documentation/devicetree/bindings/hwmon/adcxx.txt b/Documentation/devicetree/bindings/hwmon/adcxx.txt
new file mode 100644
index 000000000000..a94a5fe21b6d
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/adcxx.txt
@@ -0,0 +1,24 @@
+adcxx properties
+
+Required properties:
+- compatible: Must be one of the following:
+ - "national,adcxx1s" for adcxx1s
+ - "national,adcxx2s" for adcxx2s
+ - "national,adcxx4s" for adcxx4s
+ - "national,adcxx8s" for adcxx8s
+- reg: SPI address for chip
+
+Optional properties:
+
+- vref-supply
+ The external reference in microvolt for this device is set to this value.
+ If it does not exists the reference will be set to 3300000uV (3.3V).
+
+Example:
+
+adc@6 {
+ compatible = "national,adcxx2s";
+ reg = <6 0>;
+ spi-max-frequency = <1000000>;
+ vref-supply = <&vref>;
+};
--
2.11.0
