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a86319f42c
We use this part in an example for the envelope detector. That showed that we need to allow for the #io-channel-cells property which trivial-devices.yaml does not. It doesn't make sense to add that property to trivial-devices as it only applies for those devices that can provide some sort of DAC or ADC service to another device driver. Hence solution will be to pull some IIO devices out to have their own file on a case by case basis. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Rob Herring <robh@kernel.org> Cc: Peter Rosin <peda@axentia.se> Link: https://lore.kernel.org/r/20201031181242.742301-4-jic23@kernel.org
116 lines
3.1 KiB
YAML
116 lines
3.1 KiB
YAML
# 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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$id: http://devicetree.org/schemas/iio/potentiometer/microchip,mcp4531.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Microchip mcp4531 and similar potentiometers.
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maintainers:
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- Peter Rosin <peda@axentia.se>
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description: |
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Family of I2C digital potentiometer
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Datasheets at:
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* volatile https://ww1.microchip.com/downloads/en/DeviceDoc/22096b.pdf
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* non-volatile https://ww1.microchip.com/downloads/en/DeviceDoc/22107B.pdf
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Part numbers as follows: mcp4ABC-XXX where
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A = 5 (1 wiper), 6 (2 wipers)
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B = 3 (7-bit, volatile), 4 (7-bit, non-volatile),
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5 (8-bit, volatile), 6 (8-bit, non-volatile),
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C: 1 (potentiometer), 2 (rheostat)
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XXX = 502 (5 kOhms), 103 (10 kOhms), 503 (50 kOhms), 104 (100 kOhms)
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properties:
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compatible:
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enum:
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# Ordering reflects part number + range, so 502 < 103 etc
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- microchip,mcp4531-502
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- microchip,mcp4531-103
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- microchip,mcp4531-503
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- microchip,mcp4531-104
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- microchip,mcp4532-502
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- microchip,mcp4532-103
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- microchip,mcp4532-503
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- microchip,mcp4532-104
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- microchip,mcp4541-502
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- microchip,mcp4541-103
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- microchip,mcp4541-503
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- microchip,mcp4541-104
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- microchip,mcp4542-502
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- microchip,mcp4542-103
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- microchip,mcp4542-503
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- microchip,mcp4542-104
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- microchip,mcp4551-502
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- microchip,mcp4551-103
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- microchip,mcp4551-503
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- microchip,mcp4551-104
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- microchip,mcp4552-502
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- microchip,mcp4552-103
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- microchip,mcp4552-503
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- microchip,mcp4552-104
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- microchip,mcp4561-502
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- microchip,mcp4561-103
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- microchip,mcp4561-503
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- microchip,mcp4561-104
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- microchip,mcp4562-502
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- microchip,mcp4562-103
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- microchip,mcp4562-503
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- microchip,mcp4562-104
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- microchip,mcp4631-502
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- microchip,mcp4631-103
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- microchip,mcp4631-503
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- microchip,mcp4631-104
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- microchip,mcp4632-502
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- microchip,mcp4632-103
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- microchip,mcp4632-503
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- microchip,mcp4632-104
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- microchip,mcp4641-502
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- microchip,mcp4641-103
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- microchip,mcp4641-503
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- microchip,mcp4641-104
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- microchip,mcp4642-502
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- microchip,mcp4642-103
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- microchip,mcp4642-503
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- microchip,mcp4642-104
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- microchip,mcp4651-502
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- microchip,mcp4651-103
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- microchip,mcp4651-503
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- microchip,mcp4651-104
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- microchip,mcp4652-502
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- microchip,mcp4652-103
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- microchip,mcp4652-503
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- microchip,mcp4652-104
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- microchip,mcp4661-502
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- microchip,mcp4661-103
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- microchip,mcp4661-503
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- microchip,mcp4661-104
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- microchip,mcp4662-502
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- microchip,mcp4662-103
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- microchip,mcp4662-503
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- microchip,mcp4662-104
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reg:
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maxItems: 1
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"#io-channel-cells":
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const: 1
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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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dpot: dpot@28 {
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compatible = "microchip,mcp4651-104";
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reg = <0x28>;
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#io-channel-cells = <1>;
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};
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};
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...
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