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