1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2%YAML 1.2 3--- 4 5$id: http://devicetree.org/schemas/hwmon/ti,ina2xx.yaml# 6$schema: http://devicetree.org/meta-schemas/core.yaml# 7 8title: Texas Instruments INA209 family of power/voltage monitors 9 10maintainers: 11 - Krzysztof Kozlowski <krzk@kernel.org> 12 13description: | 14 The INA209 is a high-side current shunt and power monitor with 15 an I2C interface. 16 17 Datasheets: 18 https://www.ti.com/product/INA209 19 20properties: 21 compatible: 22 enum: 23 - ti,ina209 24 - ti,ina219 25 - ti,ina220 26 - ti,ina226 27 - ti,ina230 28 - ti,ina231 29 - ti,ina238 30 31 reg: 32 maxItems: 1 33 34 shunt-resistor: 35 description: 36 Shunt resistor value in micro-Ohm. 37 $ref: /schemas/types.yaml#/definitions/uint32 38 39 ti,shunt-gain: 40 description: | 41 Programmable gain divisor for the shunt voltage accuracy and range. This 42 property only applies to devices that have configurable PGA/ADCRANGE. The 43 gain value is used configure the gain and to convert the shunt voltage, 44 current and power register values when reading measurements from the 45 device. 46 47 For devices that have a configurable PGA (e.g. INA209, INA219, INA220), 48 the gain value maps directly with the PG bits of the config register. 49 50 For devices that have ADCRANGE configuration (e.g. INA238) a shunt-gain 51 value of 1 maps to ADCRANGE=1 where no gain divisor is applied to the 52 shunt voltage, and a value of 4 maps to ADCRANGE=0 such that a wider 53 voltage range is used. 54 55 The default value is device dependent, and is defined by the reset value 56 of PGA/ADCRANGE in the respective configuration registers. 57 $ref: /schemas/types.yaml#/definitions/uint32 58 enum: [1, 2, 4, 8] 59 60required: 61 - compatible 62 - reg 63 64additionalProperties: false 65 66examples: 67 - | 68 i2c { 69 #address-cells = <1>; 70 #size-cells = <0>; 71 72 power-sensor@44 { 73 compatible = "ti,ina220"; 74 reg = <0x44>; 75 shunt-resistor = <1000>; 76 }; 77 }; 78