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authorParesh Chaudhary <paresh.chaudhary@rockwellcollins.com>2019-03-26 12:18:41 +0100
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2019-04-04 20:21:03 +0100
commit8fede567b8472b36e2af3eac94ba68b234533bac (patch)
treec7ae90b67ccd183ade3438e74f7096109dfd0b82 /Documentation/devicetree/bindings/iio
parent023e41632e065d49bcbe31b3c4b336217f96a271 (diff)
iio:temperature:max31856:Add device tree bind info
This patch added device tree binding info for MAX31856 driver. Signed-off-by: Paresh Chaudhary <paresh.chaudhary@rockwellcollins.com> Signed-off-by: Matt Weber <matthew.weber@rockwellcollins.com> Signed-off-by: Patrick Havelange <patrick.havelange@essensium.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'Documentation/devicetree/bindings/iio')
-rw-r--r--Documentation/devicetree/bindings/iio/temperature/max31856.txt24
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diff --git a/Documentation/devicetree/bindings/iio/temperature/max31856.txt b/Documentation/devicetree/bindings/iio/temperature/max31856.txt
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+Maxim MAX31856 thermocouple support
+
+https://datasheets.maximintegrated.com/en/ds/MAX31856.pdf
+
+Optional property:
+ - thermocouple-type: Type of thermocouple (THERMOCOUPLE_TYPE_K if
+ omitted). Supported types are B, E, J, K, N, R, S, T.
+
+Required properties:
+ - compatible: must be "maxim,max31856"
+ - reg: SPI chip select number for the device
+ - spi-max-frequency: As per datasheet max. supported freq is 5000000
+ - spi-cpha: must be defined for max31856 to enable SPI mode 1
+
+ Refer to spi/spi-bus.txt for generic SPI slave bindings.
+
+ Example:
+ temp-sensor@0 {
+ compatible = "maxim,max31856";
+ reg = <0>;
+ spi-max-frequency = <5000000>;
+ spi-cpha;
+ thermocouple-type = <THERMOCOUPLE_TYPE_K>;
+ };