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dt-bindings: iio: adc: Add excitation current sources properties

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Some ADCs incorporate current sources that provide excitation current to
resistive temperature devices (RTDs), thermistors, diodes and other
resistive sensors that require constant current biasing.

Signed-off-by: Kurt Borja <kuurtb@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: David Lechner (TI) <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
This commit is contained in:
Kurt Borja 2026-07-14 18:21:24 -05:00 committed by Jonathan Cameron
parent d8a07f6200
commit fc418aa774
1 changed files with 21 additions and 0 deletions
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21
Documentation/devicetree/bindings/iio/adc/adc.yaml
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@ -80,6 +80,27 @@ properties:
ADCs usually allow choosing between internal reference sources or a pair
of external pins.
excitation-channels:
$ref: /schemas/types.yaml#/definitions/uint32-array
description:
Excitation current sources provide current to resistive temperature
devices (RTDs), thermistors, diodes and other resistive sensors that
require constant current biasing.
This array describes the mux configuration of the excitation current
sources. The values correspond to pins similar to the diff-channels and
single-channel properties.
excitation-current-nanoamp:
description:
Excitation current sources provide current to resistive temperature
devices (RTDs), thermistors, diodes and other resistive sensors that
require constant current biasing.
This array describes the current configuration of the excitation current
sources. The index in the array corresponds to the same index in the
excitation-channels array.
anyOf:
- oneOf:
- required: