[PATCH v5 1/2] iio:temperature:max31856:Add device tree bind info
From: Patrick Havelange
Date: Tue Feb 26 2019 - 10:02:38 EST
From: Paresh Chaudhary <paresh.chaudhary@xxxxxxxxxxxxxxxxxxx>
This patch added device tree binding info for MAX31856 driver.
Signed-off-by: Paresh Chaudhary <paresh.chaudhary@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Matt Weber <matthew.weber@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Patrick Havelange <patrick.havelange@xxxxxxxxxxxxx>
---
Changes
v1 -> v2
[Matt
- Removed comment block and added possibilities of
thermocouple type in device tree binding doc.
v2 -> v3
- Rebased
v3 -> v4
- Removed one-shot property related information.
- Used standard name 'temp-sensor'
v4 -> v5
[Patrick
- Rename thermocouple type to maxim,thermocouple-type for DT entry
---
.../bindings/iio/temperature/max31856.txt | 29 +++++++++++++++++++
1 file changed, 29 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/temperature/max31856.txt
diff --git a/Documentation/devicetree/bindings/iio/temperature/max31856.txt b/Documentation/devicetree/bindings/iio/temperature/max31856.txt
new file mode 100644
index 000000000000..b4396069b8fa
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/temperature/max31856.txt
@@ -0,0 +1,29 @@
+Maxim MAX31856 thermocouple support
+
+https://datasheets.maximintegrated.com/en/ds/MAX31856.pdf
+
+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
+ - maxim,thermocouple-type: Type of thermocouple (By default is K-Type)
+ 0x00 : TYPE_B
+ 0x01 : TYPE_E
+ 0x02 : TYPE_J
+ 0x03 : TYPE_K (default)
+ 0x04 : TYPE_N
+ 0x05 : TYPE_R
+ 0x06 : TYPE_S
+ 0x07 : TYPE_T
+
+ 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;
+ maxim,thermocouple-type = <0x03>;
+ };
--
2.19.1