aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/iio/temperature/max31856.txt
diff options
context:
space:
mode:
authorDmitry Torokhov <dmitry.torokhov@gmail.com>2019-07-20 07:07:56 +0300
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2019-07-20 07:07:56 +0300
commitc39f2d9db0fd81ea20bb5cce9b3f082ca63753e2 (patch)
tree8e80ed5601b4fb8880a2ca8e08802bc8b1f850bd /Documentation/devicetree/bindings/iio/temperature/max31856.txt
parentMerge branch 'next' into for-linus (diff)
parentInput: alps - fix a mismatch between a condition check and its comment (diff)
downloadlinux-dev-c39f2d9db0fd81ea20bb5cce9b3f082ca63753e2.tar.xz
linux-dev-c39f2d9db0fd81ea20bb5cce9b3f082ca63753e2.zip
Merge branch 'next' into for-linus
Prepare second round of input updates for 5.3 merge window.
Diffstat (limited to 'Documentation/devicetree/bindings/iio/temperature/max31856.txt')
-rw-r--r--Documentation/devicetree/bindings/iio/temperature/max31856.txt24
1 files changed, 24 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/temperature/max31856.txt b/Documentation/devicetree/bindings/iio/temperature/max31856.txt
new file mode 100644
index 000000000000..06ab43bb4de8
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/temperature/max31856.txt
@@ -0,0 +1,24 @@
+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>;
+ };