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The current-sense-amplifier is an IIO provider thus can be referenced by IIO consumers (via "io-channels" property in consumer device node). Such provider is required to describe number of cells used in phandle lookup with "io-channel-cells" property. Signed-off-by: Primoz Fiser <primoz.fiser@norik.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://patch.msgid.link/20250905065503.3022107-1-primoz.fiser@norik.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
59 lines
1.4 KiB
YAML
59 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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$id: http://devicetree.org/schemas/iio/afe/current-sense-amplifier.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Current Sense Amplifier
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maintainers:
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- Peter Rosin <peda@axentia.se>
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description: |
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When an io-channel measures the output voltage from a current sense
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amplifier, the interesting measurement is almost always the current
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through the sense resistor, not the voltage output. This binding
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describes such a current sense circuit.
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properties:
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compatible:
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const: current-sense-amplifier
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io-channels:
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maxItems: 1
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description: |
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Channel node of a voltage io-channel.
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"#io-channel-cells":
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const: 0
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sense-resistor-micro-ohms:
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description: The sense resistance.
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sense-gain-mult:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Amplifier gain multiplier. The default is <1>.
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sense-gain-div:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Amplifier gain divider. The default is <1>.
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required:
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- compatible
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- io-channels
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- sense-resistor-micro-ohms
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additionalProperties: false
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examples:
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- |
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sysi {
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compatible = "current-sense-amplifier";
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#io-channel-cells = <0>;
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io-channels = <&tiadc 0>;
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sense-resistor-micro-ohms = <20000>;
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sense-gain-mult = <50>;
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};
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...
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