| # SPDX-License-Identifier: GPL-2.0 |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/iio/adc/adc.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: IIO Common Properties for ADC Channels |
| |
| maintainers: |
| - Jonathan Cameron <jic23@kernel.org> |
| |
| description: |
| A few properties are defined in a common way ADC channels. |
| |
| properties: |
| $nodename: |
| pattern: "^channel(@[0-9a-f]+)?$" |
| description: |
| A channel index should match reg. |
| |
| reg: |
| maxItems: 1 |
| |
| label: |
| description: Unique name to identify which channel this is. |
| |
| bipolar: |
| $ref: /schemas/types.yaml#/definitions/flag |
| description: If provided, the channel is to be used in bipolar mode. |
| |
| diff-channels: |
| $ref: /schemas/types.yaml#/definitions/uint32-array |
| maxItems: 2 |
| minItems: 2 |
| description: |
| Many ADCs have dual Muxes to allow different input pins to be routed |
| to both the positive and negative inputs of a differential ADC. |
| The first value specifies the positive input pin, the second |
| specifies the negative input pin. |
| |
| settling-time-us: |
| description: |
| Time between enabling the channel and first stable readings. |
| |
| oversampling-ratio: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| description: |
| Oversampling is used as replacement of or addition to the low-pass filter. |
| In some cases, the desired filtering characteristics are a function the |
| device design and can interact with other characteristics such as |
| settling time. |
| |
| additionalProperties: true |