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# Copyright 2021 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
description: ADC parent node
compatible: "named-adc-channels"
child-binding:
description: Named ADCs child node
properties:
label:
required: true
type: string
description:
Human-readable string describing the device (used as
device_get_binding() argument)
channel:
required: true
type: int
description: ADC channel used
mul:
required: false
type: int
default: 1
description: Multiplication factor of ADC measurement
div:
required: false
type: int
default: 1
description: Division factor of ADC measurement
gain:
required: false
type: string
description:
Gain selection for the ADC channel. Source of valid gain settings is
"enum adc_gain" found in <zephyr-base>/include/drivers/adc.h
enum:
- ADC_GAIN_1_6
- ADC_GAIN_1_5
- ADC_GAIN_1_4
- ADC_GAIN_1_3
- ADC_GAIN_1_2
- ADC_GAIN_2_3
- ADC_GAIN_1
- ADC_GAIN_2
- ADC_GAIN_3
- ADC_GAIN_4
- ADC_GAIN_8
- ADC_GAIN_16
- ADC_GAIN_32
- ADC_GAIN_64
- ADC_GAIN_128
default: ADC_GAIN_1
reference:
required: false
type: string
description:
Sets the reference voltage for the ADC channel. Source of valid
reference voltages is "enum adc_reference" found in
<zephyr-base>/include/drivers/adc.
enum:
- ADC_REF_VDD_1
- ADC_REF_VDD_1_2
- ADC_REF_VDD_1_3
- ADC_REF_VDD_1_4
- ADC_REF_INTERNAL
- ADC_REF_EXTERNAL0
- ADC_REF_EXTERNAL1
default: ADC_REF_INTERNAL
acquisition-time:
required: false
type: int
description:
Set the acquisition time for ADC conversion. Use the ADC_ACQ_TIME macro
to compose this value. If the hardware doesn't support a configurable
acquisition time, use ADC_ACQ_TIME_DEFAULT (0).
default: 0
differential:
required: false
type: boolean
description:
Set the ADC acquisition mode to differential. Default mode is
single-ended acquisition.
enum-name:
type: string
required: true
description:
Enum values used in the source code to refer to the ADC channels
enum:
- ADC_AMON_BMON
- ADC_BOARD_ID_0
- ADC_BOARD_ID_1
- ADC_PMON
- ADC_PSYS
- ADC_TEMP_SENSOR_CHARGER
- ADC_TEMP_SENSOR_DDR_SOC
- ADC_TEMP_SENSOR_FAN
- ADC_TEMP_SENSOR_PP3300_REGULATOR
- ADC_VBUS
- ADC_VBUS_C0
- ADC_VBUS_C1
- ADC_EVB_CH_0
- ADC_EVB_CH_1
- ADC_EVB_CH_2
- ADC_EVB_CH_3
- ADC_EVB_CH_4
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