forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
151 lines
4.2 KiB
151 lines
4.2 KiB
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
|
%YAML 1.2 |
|
--- |
|
$id: http://devicetree.org/schemas/thermal/qcom-spmi-adc-tm5.yaml# |
|
$schema: http://devicetree.org/meta-schemas/core.yaml# |
|
|
|
title: Qualcomm's SPMI PMIC ADC Thermal Monitoring |
|
maintainers: |
|
- Dmitry Baryshkov <[email protected]> |
|
|
|
properties: |
|
compatible: |
|
const: qcom,spmi-adc-tm5 |
|
|
|
reg: |
|
maxItems: 1 |
|
|
|
interrupts: |
|
maxItems: 1 |
|
|
|
"#thermal-sensor-cells": |
|
const: 1 |
|
description: |
|
Number of cells required to uniquely identify the thermal sensors. Since |
|
we have multiple sensors this is set to 1 |
|
|
|
"#address-cells": |
|
const: 1 |
|
|
|
"#size-cells": |
|
const: 0 |
|
|
|
qcom,avg-samples: |
|
$ref: /schemas/types.yaml#/definitions/uint32 |
|
description: Number of samples to be used for measurement. |
|
enum: |
|
- 1 |
|
- 2 |
|
- 4 |
|
- 8 |
|
- 16 |
|
default: 1 |
|
|
|
qcom,decimation: |
|
$ref: /schemas/types.yaml#/definitions/uint32 |
|
description: This parameter is used to decrease ADC sampling rate. |
|
Quicker measurements can be made by reducing decimation ratio. |
|
enum: |
|
- 250 |
|
- 420 |
|
- 840 |
|
default: 840 |
|
|
|
patternProperties: |
|
"^([-a-z0-9]*)@[0-7]$": |
|
type: object |
|
description: |
|
Represent one thermal sensor. |
|
|
|
properties: |
|
reg: |
|
description: Specify the sensor channel. There are 8 channels in PMIC5's ADC TM |
|
minimum: 0 |
|
maximum: 7 |
|
|
|
io-channels: |
|
description: |
|
From common IIO binding. Used to pipe PMIC ADC channel to thermal monitor |
|
|
|
qcom,ratiometric: |
|
$ref: /schemas/types.yaml#/definitions/flag |
|
description: |
|
Channel calibration type. |
|
If this property is specified VADC will use the VDD reference |
|
(1.875V) and GND for channel calibration. If property is not found, |
|
channel will be calibrated with 0V and 1.25V reference channels, |
|
also known as absolute calibration. |
|
|
|
qcom,hw-settle-time-us: |
|
description: Time between AMUX getting configured and the ADC starting conversion. |
|
enum: [15, 100, 200, 300, 400, 500, 600, 700, 1000, 2000, 4000, 8000, 16000, 32000, 64000, 128000] |
|
|
|
qcom,pre-scaling: |
|
$ref: /schemas/types.yaml#/definitions/uint32-array |
|
description: Used for scaling the channel input signal before the |
|
signal is fed to VADC. The configuration for this node is to know the |
|
pre-determined ratio and use it for post scaling. It is a pair of |
|
integers, denoting the numerator and denominator of the fraction by |
|
which input signal is multiplied. For example, <1 3> indicates the |
|
signal is scaled down to 1/3 of its value before ADC measurement. If |
|
property is not found default value depending on chip will be used. |
|
items: |
|
- const: 1 |
|
- enum: [ 1, 3, 4, 6, 20, 8, 10 ] |
|
|
|
required: |
|
- reg |
|
- io-channels |
|
|
|
additionalProperties: |
|
false |
|
|
|
required: |
|
- compatible |
|
- reg |
|
- interrupts |
|
- "#address-cells" |
|
- "#size-cells" |
|
- "#thermal-sensor-cells" |
|
|
|
additionalProperties: false |
|
|
|
examples: |
|
- | |
|
#include <dt-bindings/iio/qcom,spmi-vadc.h> |
|
#include <dt-bindings/interrupt-controller/irq.h> |
|
spmi_bus { |
|
#address-cells = <1>; |
|
#size-cells = <0>; |
|
pm8150b_adc: adc@3100 { |
|
reg = <0x3100>; |
|
compatible = "qcom,spmi-adc5"; |
|
#address-cells = <1>; |
|
#size-cells = <0>; |
|
#io-channel-cells = <1>; |
|
|
|
/* Other propreties are omitted */ |
|
conn-therm@4f { |
|
reg = <ADC5_AMUX_THM3_100K_PU>; |
|
qcom,ratiometric; |
|
qcom,hw-settle-time = <200>; |
|
}; |
|
}; |
|
|
|
pm8150b_adc_tm: adc-tm@3500 { |
|
compatible = "qcom,spmi-adc-tm5"; |
|
reg = <0x3500>; |
|
interrupts = <0x2 0x35 0x0 IRQ_TYPE_EDGE_RISING>; |
|
#thermal-sensor-cells = <1>; |
|
#address-cells = <1>; |
|
#size-cells = <0>; |
|
|
|
conn-therm@0 { |
|
reg = <0>; |
|
io-channels = <&pm8150b_adc ADC5_AMUX_THM3_100K_PU>; |
|
qcom,ratiometric; |
|
qcom,hw-settle-time-us = <200>; |
|
}; |
|
}; |
|
}; |
|
...
|
|
|