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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/hwmon/nuvoton,nct7802.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Nuvoton NCT7802Y Hardware Monitoring IC
maintainers:
- Guenter Roeck <linux@roeck-us.net>
description: |
The NCT7802Y is a hardware monitor IC which supports one on-die and up to
5 remote temperature sensors with SMBus interface.
Datasheets:
https://www.nuvoton.com/export/resource-files/Nuvoton_NCT7802Y_Datasheet_V12.pdf
additionalProperties: false
properties:
compatible:
enum:
- nuvoton,nct7802
reg:
maxItems: 1
"#address-cells":
const: 1
"#size-cells":
const: 0
patternProperties:
"^channel@[0-3]$":
type: object
additionalProperties: false
properties:
reg:
items:
- enum:
- 0 # Local Temperature Sensor ("LTD")
- 1 # Remote Temperature Sensor or Voltage Sensor 1 ("RTD1")
- 2 # Remote Temperature Sensor or Voltage Sensor 2 ("RTD2")
- 3 # Remote Temperature Sensor or Voltage Sensor 3 ("RTD3")
sensor-type:
items:
- enum:
- temperature
- voltage
temperature-mode:
items:
- enum:
- thermistor
- thermal-diode
required:
- reg
allOf:
# For channels RTD1, RTD2 and RTD3, require sensor-type to be set.
# Otherwise (for all other channels), do not allow temperature-mode to be
# set.
- if:
properties:
reg:
items:
- enum:
- 1
- 2
- 3
then:
required:
- sensor-type
else:
not:
required:
- sensor-type
# For channels RTD1 and RTD2 and if sensor-type is "temperature", require
# temperature-mode to be set. Otherwise (for all other channels or
# sensor-type settings), do not allow temperature-mode to be set
- if:
properties:
reg:
items:
- enum:
- 1
- 2
sensor-type:
items:
- enum:
- temperature
then:
required:
- temperature-mode
else:
not:
required:
- temperature-mode
required:
- compatible
- reg
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
nct7802@28 {
compatible = "nuvoton,nct7802";
reg = <0x28>;
#address-cells = <1>;
#size-cells = <0>;
channel@0 { /* LTD */
reg = <0>;
};
channel@1 { /* RTD1 */
reg = <1>;
sensor-type = "voltage";
};
channel@2 { /* RTD2 */
reg = <2>;
sensor-type = "temperature";
temperature-mode = "thermal-diode";
};
channel@3 { /* RTD3 */
reg = <3>;
sensor-type = "temperature";
};
};
};
|
