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* Microchip MCP3911 Dual channel analog front end (ADC)
Required properties:
- compatible: Should be "microchip,mcp3911"
- reg: SPI chip select number for the device
Recommended properties:
- spi-max-frequency: Definition as per
Documentation/devicetree/bindings/spi/spi-bus.txt.
Max frequency for this chip is 20MHz.
Optional properties:
- clocks: Phandle and clock identifier for sampling clock
- interrupt-parent: Phandle to the parent interrupt controller
- interrupts: IRQ line for the ADC
- microchip,device-addr: Device address when multiple MCP3911 chips are present on the
same SPI bus. Valid values are 0-3. Defaults to 0.
- vref-supply: Phandle to the external reference voltage supply.
Example:
adc@0 {
compatible = "microchip,mcp3911";
reg = <0>;
interrupt-parent = <&gpio5>;
interrupts = <15 IRQ_TYPE_EDGE_RISING>;
spi-max-frequency = <20000000>;
microchip,device-addr = <0>;
vref-supply = <&vref_reg>;
clocks = <&xtal>;
};
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