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A more recent version of the am3359 ADC is available on certain SoCs of the am437x family. This IP has evolved a little bit and deserves its own compatible. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20211015081506.933180-8-miquel.raynal@bootlin.com
71 lines
2.1 KiB
YAML
71 lines
2.1 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/adc/ti,am3359-adc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: TI AM3359 ADC
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maintainers:
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- Miquel Raynal <miquel.raynal@bootlin.com>
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properties:
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compatible:
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enum:
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- ti,am3359-adc
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- ti,am4372-adc
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'#io-channel-cells':
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const: 1
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ti,adc-channels:
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description: List of analog inputs available for ADC. AIN0 = 0, AIN1 = 1 and
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so on until AIN7 = 7.
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 1
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maxItems: 8
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ti,chan-step-opendelay:
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description: List of open delays for each channel of ADC in the order of
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ti,adc-channels. The value corresponds to the number of ADC clock cycles
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to wait after applying the step configuration registers and before sending
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the start of ADC conversion. Maximum value is 0x3FFFF.
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 1
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maxItems: 8
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ti,chan-step-sampledelay:
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description: List of sample delays for each channel of ADC in the order of
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ti,adc-channels. The value corresponds to the number of ADC clock cycles
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to sample (to hold start of conversion high). Maximum value is 0xFF.
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 1
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maxItems: 8
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ti,chan-step-avg:
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description: Number of averages to be performed for each channel of ADC. If
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average is 16 (this is also the maximum) then input is sampled 16 times
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and averaged to get more accurate value. This increases the time taken by
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ADC to generate a sample. Maximum value is 16.
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 1
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maxItems: 8
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required:
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- compatible
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- '#io-channel-cells'
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- ti,adc-channels
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additionalProperties: false
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examples:
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- |
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adc {
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compatible = "ti,am3359-adc";
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#io-channel-cells = <1>;
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ti,adc-channels = <4 5 6 7>;
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ti,chan-step-opendelay = <0x098 0x3ffff 0x098 0x0>;
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ti,chan-step-sampledelay = <0xff 0x0 0xf 0x0>;
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ti,chan-step-avg = <16 2 4 8>;
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};
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