Kernel-4.18.0-80.el8_maxim_thermocouple

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>;
};