1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/iio/afe/current-sense-amplifier.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Current Sense Amplifier 8 9maintainers: 10 - Peter Rosin <peda@axentia.se> 11 12description: | 13 When an io-channel measures the output voltage from a current sense 14 amplifier, the interesting measurement is almost always the current 15 through the sense resistor, not the voltage output. This binding 16 describes such a current sense circuit. 17 18properties: 19 compatible: 20 const: current-sense-amplifier 21 22 io-channels: 23 maxItems: 1 24 description: | 25 Channel node of a voltage io-channel. 26 27 sense-resistor-micro-ohms: 28 description: The sense resistance. 29 30 sense-gain-mult: 31 $ref: /schemas/types.yaml#/definitions/uint32 32 description: Amplifier gain multiplier. The default is <1>. 33 34 sense-gain-div: 35 $ref: /schemas/types.yaml#/definitions/uint32 36 description: Amplifier gain divider. The default is <1>. 37 38required: 39 - compatible 40 - io-channels 41 - sense-resistor-micro-ohms 42 43additionalProperties: false 44 45examples: 46 - | 47 sysi { 48 compatible = "current-sense-amplifier"; 49 io-channels = <&tiadc 0>; 50 51 sense-resistor-micro-ohms = <20000>; 52 sense-gain-mult = <50>; 53 }; 54... 55