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90 lines
1.9 KiB
90 lines
1.9 KiB
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/iio/dac/microchip,mcp4725.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: Microchip mcp4725 and mcp4726 DAC |
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maintainers: |
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- Tomas Novotny <[email protected]> |
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properties: |
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compatible: |
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enum: |
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- microchip,mcp4725 |
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- microchip,mcp4726 |
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reg: |
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maxItems: 1 |
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vdd-supply: |
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description: | |
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Provides both power and acts as the reference supply on the mcp4725. |
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For the mcp4726 it will be used as the reference voltage if vref-supply |
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is not provided. |
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vref-supply: |
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description: |
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Vref pin is used as a voltage reference when this supply is specified. |
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microchip,vref-buffered: |
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type: boolean |
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description: | |
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Enable buffering of the external Vref pin. This boolean is not valid |
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without the vref-supply. Quoting the datasheet: This is offered in |
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cases where the reference voltage does not have the current |
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capability not to drop its voltage when connected to the internal |
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resistor ladder circuit. |
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allOf: |
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- if: |
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properties: |
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compatible: |
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contains: |
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const: microchip,mcp4725 |
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then: |
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properties: |
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vref-supply: false |
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required: |
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- vdd-supply |
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- if: |
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properties: |
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compatible: |
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contains: |
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const: microchip,mcp4726 |
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then: |
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anyOf: |
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- required: |
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- vdd-supply |
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- required: |
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- vref-supply |
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- if: |
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not: |
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required: |
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- vref-supply |
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then: |
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properties: |
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microchip,vref-buffered: false |
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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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i2c { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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mcp4725@60 { |
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compatible = "microchip,mcp4725"; |
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reg = <0x60>; |
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vdd-supply = <&vdac_vdd>; |
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}; |
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}; |
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...
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