18c2ecf20Sopenharmony_ciMaxim thermocouple support 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ci* https://datasheets.maximintegrated.com/en/ds/MAX6675.pdf 48c2ecf20Sopenharmony_ci* https://datasheets.maximintegrated.com/en/ds/MAX31855.pdf 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ciRequired properties: 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci - compatible: must be "maxim,max6675" or one of the following: 98c2ecf20Sopenharmony_ci "maxim,max31855k", "maxim,max31855j", "maxim,max31855n", 108c2ecf20Sopenharmony_ci "maxim,max31855s", "maxim,max31855t", "maxim,max31855e", 118c2ecf20Sopenharmony_ci "maxim,max31855r"; the generic "max,max31855" is deprecated. 128c2ecf20Sopenharmony_ci - reg: SPI chip select number for the device 138c2ecf20Sopenharmony_ci - spi-max-frequency: must be 4300000 148c2ecf20Sopenharmony_ci - spi-cpha: must be defined for max6675 to enable SPI mode 1 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci Refer to spi/spi-bus.txt for generic SPI slave bindings. 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_ciExample: 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci max31855@0 { 218c2ecf20Sopenharmony_ci compatible = "maxim,max31855k"; 228c2ecf20Sopenharmony_ci reg = <0>; 238c2ecf20Sopenharmony_ci spi-max-frequency = <4300000>; 248c2ecf20Sopenharmony_ci }; 25