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linux-cryptodev-2.6/Documentation/devicetree/bindings/iio/temperature/maxim_thermocouple.txt
Matt Ranostay 1f25ca11d8 iio: temperature: add support for Maxim thermocouple chips
Add initial driver support for MAX6675, and MAX31855 thermocouple chips.

Cc: Marek Vasut <marex@denx.de>
Cc: Matt Porter <mporter@konsulko.com>
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-07-10 14:44:03 +01:00

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Maxim thermocouple support
* https://datasheets.maximintegrated.com/en/ds/MAX6675.pdf
* https://datasheets.maximintegrated.com/en/ds/MAX31855.pdf
Required properties:
- compatible: must be "maxim,max31855" or "maxim,max6675"
- reg: SPI chip select number for the device
- spi-max-frequency: must be 4300000
- spi-cpha: must be defined for max6675 to enable SPI mode 1
Refer to spi/spi-bus.txt for generic SPI slave bindings.
Example:
max31855@0 {
compatible = "maxim,max31855";
reg = <0>;
spi-max-frequency = <4300000>;
};