6f18ce8026
Add snapshot of device tree bindings from keystone common kernel, branch
"android-mainline-keystone-qcom-release" at c4c12103f9c0 ("Snap for 9228065
from e32903b9a63bb558df8b803b076619c53c16baad to
android-mainline-keystone-qcom-release").
Change-Id: I7682079615cbd9f29340a5c1f2a1d84ec441a1f1
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>
65 lines
1.4 KiB
YAML
65 lines
1.4 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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$id: http://devicetree.org/schemas/iio/dac/dpot-dac.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: DAC emulation using a digital potentiometer
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maintainers:
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- Peter Rosin <peda@axentia.se>
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description: |
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It is assumed that the dpot is used as a voltage divider between the
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current dpot wiper setting and the maximum resistance of the dpot. The
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divided voltage is provided by a vref regulator.
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.------.
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.-----------. | |
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| vref |--' .---.
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| regulator |--. | |
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'-----------' | | d |
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| | p |
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| | o | wiper
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| | t |<---------+
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| | |
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| '---' dac output voltage
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| |
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'------+------------+
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properties:
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compatible:
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const: dpot-dac
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vref-supply:
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description: Regulator supplying the voltage divider.
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io-channels:
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maxItems: 1
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description: |
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Channel node of the dpot to be used for the voltage division.
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io-channel-names:
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const: dpot
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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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- vref-supply
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- io-channels
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- io-channel-names
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additionalProperties: false
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examples:
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- |
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dac {
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compatible = "dpot-dac";
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vref-supply = <®_3v3>;
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io-channels = <&dpot 0>;
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io-channel-names = "dpot";
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};
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...
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