xref: /OK3568_Linux_fs/kernel/Documentation/devicetree/bindings/iio/temperature/maxim_thermocouple.txt (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593SmuzhiyunMaxim thermocouple support
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3*4882a593Smuzhiyun* https://datasheets.maximintegrated.com/en/ds/MAX6675.pdf
4*4882a593Smuzhiyun* https://datasheets.maximintegrated.com/en/ds/MAX31855.pdf
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6*4882a593SmuzhiyunRequired properties:
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8*4882a593Smuzhiyun	- compatible: must be "maxim,max6675" or one of the following:
9*4882a593Smuzhiyun	   "maxim,max31855k", "maxim,max31855j", "maxim,max31855n",
10*4882a593Smuzhiyun	   "maxim,max31855s", "maxim,max31855t", "maxim,max31855e",
11*4882a593Smuzhiyun	   "maxim,max31855r"; the generic "max,max31855" is deprecated.
12*4882a593Smuzhiyun	- reg: SPI chip select number for the device
13*4882a593Smuzhiyun	- spi-max-frequency: must be 4300000
14*4882a593Smuzhiyun	- spi-cpha: must be defined for max6675 to enable SPI mode 1
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16*4882a593Smuzhiyun	Refer to spi/spi-bus.txt for generic SPI slave bindings.
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18*4882a593SmuzhiyunExample:
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20*4882a593Smuzhiyun	max31855@0 {
21*4882a593Smuzhiyun		compatible = "maxim,max31855k";
22*4882a593Smuzhiyun		reg = <0>;
23*4882a593Smuzhiyun		spi-max-frequency = <4300000>;
24*4882a593Smuzhiyun	};
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