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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/hwmon/ti,tmp513.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: TMP513/512 system monitor sensor
maintainers:
- Eric Tremblay <etremblay@distech-controls.com>
description: |
The TMP512 (dual-channel) and TMP513 (triple-channel) are system monitors
that include remote sensors, a local temperature sensor, and a high-side
current shunt monitor. These system monitors have the capability of measuring
remote temperatures, on-chip temperatures, and system voltage/power/current
consumption.
Datasheets:
http://www.ti.com/lit/gpn/tmp513
http://www.ti.com/lit/gpn/tmp512
properties:
compatible:
enum:
- ti,tmp512
- ti,tmp513
reg:
maxItems: 1
shunt-resistor-micro-ohms:
description: |
If 0, the calibration process will be skiped and the current and power
measurement engine will not work. Temperature and voltage measurement
will continue to work. The shunt value also need to respect:
rshunt <= pga-gain * 40 * 1000 * 1000.
If not, it's not possible to compute a valid calibration value.
default: 1000
ti,pga-gain:
description: |
The gain value for the PGA function. This is 8, 4, 2 or 1.
The PGA gain affect the shunt voltage range.
The range will be equal to: pga-gain * 40mV
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
enum: [1, 2, 4, 8]
default: 8
ti,bus-range-microvolt:
description: |
This is the operating range of the bus voltage in microvolt
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
enum: [16000000, 32000000]
default: 32000000
ti,nfactor:
description: |
Array of three(TMP513) or two(TMP512) n-Factor value for each remote
temperature channel.
See datasheet Table 11 for n-Factor range list and value interpretation.
allOf:
- $ref: /schemas/types.yaml#definitions/uint32-array
- minItems: 2
maxItems: 3
items:
default: 0x00
minimum: 0x00
maximum: 0xFF
required:
- compatible
- reg
additionalProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
tmp513@5c {
compatible = "ti,tmp513";
reg = <0x5C>;
shunt-resistor-micro-ohms = <330000>;
ti,bus-range-microvolt = <32000000>;
ti,pga-gain = <8>;
ti,nfactor = <0x1 0xF3 0x00>;
};
};
|
