xref: /kernel/linux/linux-5.10/Documentation/devicetree/bindings/hwmon/ti,tmp513.yaml

# 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:
  https://www.ti.com/lit/gpn/tmp513
  https://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
    $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
    $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.
    $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>;
          };
    };