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* Microchip Analog to Digital Converter (ADC)
The node for this driver must be a child node of a SPI controller, hence
all mandatory properties described in
must be specified.
Required properties:
- compatible: Must be one of the following, depending on the
"mcp3001" (DEPRECATED)
"mcp3002" (DEPRECATED)
"mcp3004" (DEPRECATED)
"mcp3008" (DEPRECATED)
"mcp3201" (DEPRECATED)
"mcp3202" (DEPRECATED)
"mcp3204" (DEPRECATED)
"mcp3208" (DEPRECATED)
"mcp3301" (DEPRECATED)
NOTE: The use of the compatibles with no vendor prefix
is deprecated and only listed because old DT use them.
- spi-cpha, spi-cpol (boolean):
Either SPI mode (0,0) or (1,1) must be used, so specify
none or both of spi-cpha, spi-cpol. The MCP3550/1/3
is more efficient in mode (1,1) as only 3 instead of
4 bytes need to be read from the ADC, but not all SPI
masters support it.
- vref-supply: Phandle to the external reference voltage supply.
spi_controller {
mcp3x0x@0 {
compatible = "microchip,mcp3002";
reg = <0>;
spi-max-frequency = <1000000>;
vref-supply = <&vref_reg>;