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72 lines
1.7 KiB
72 lines
1.7 KiB
# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause |
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# Copyright 2019 Marcus Folkesson <[email protected]> |
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%YAML 1.2 |
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--- |
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$id: "http://devicetree.org/schemas/iio/adc/microchip,mcp3911.yaml#" |
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$schema: "http://devicetree.org/meta-schemas/core.yaml#" |
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title: Microchip MCP3911 Dual channel analog front end (ADC) |
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maintainers: |
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- Marcus Folkesson <[email protected]> |
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- Kent Gustavsson <[email protected]> |
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description: | |
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Bindings for the Microchip MCP3911 Dual channel ADC device. Datasheet can be |
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found here: https://ww1.microchip.com/downloads/en/DeviceDoc/20002286C.pdf |
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properties: |
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compatible: |
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enum: |
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- microchip,mcp3911 |
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reg: |
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maxItems: 1 |
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spi-max-frequency: |
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maximum: 20000000 |
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clocks: |
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description: | |
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Phandle and clock identifier for external sampling clock. |
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If not specified, the internal crystal oscillator will be used. |
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maxItems: 1 |
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interrupts: |
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description: IRQ line of the ADC |
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maxItems: 1 |
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microchip,device-addr: |
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description: Device address when multiple MCP3911 chips are present on the same SPI bus. |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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enum: [0, 1, 2, 3] |
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default: 0 |
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vref-supply: |
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description: | |
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Phandle to the external reference voltage supply. |
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If not specified, the internal voltage reference (1.2V) will be used. |
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required: |
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- compatible |
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- reg |
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additionalProperties: false |
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examples: |
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- | |
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spi { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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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 2>; |
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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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};
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