st,stm32-adc

Description

ST STM32 family ADC

Properties

Top level properties

These property descriptions apply to “st,stm32-adc” nodes themselves. This page also describes child node properties in the following sections.

Properties not inherited from the base binding file.

Name	Type	Details
`#io-channel-cells`	`int`	This property is required. Constant value: `1`
`pinctrl-0`	`phandles`	Pin configuration/s for the first state. Content is specific to the selected pin controller driver implementation. This property is required.
`pinctrl-names`	`string-array`	Names for the provided states. The number of names needs to match the number of states. This property is required.
`vref-mv`	`int`	Indicates the reference voltage of the ADC in mV (on the target board). Default value: `3300`
`has-temp-channel`	`boolean`	Indicates if the ADC has a dedicated internal temperature sensor channel.
`has-vref-channel`	`boolean`	Indicates if the ADC has a dedicated internal voltage reference channel.
`has-vbat-channel`	`boolean`	Indicates if the ADC has a dedicated internal vbat monitoring channel.
`pinctrl-1`	`phandles`	Pin configuration/s for the second state. See pinctrl-0.
`pinctrl-2`	`phandles`	Pin configuration/s for the third state. See pinctrl-0.
`pinctrl-3`	`phandles`	Pin configuration/s for the fourth state. See pinctrl-0.
`pinctrl-4`	`phandles`	Pin configuration/s for the fifth state. See pinctrl-0.

Properties inherited from the base binding file, which defines common properties that may be set on many nodes. Not all of these may apply to the “st,stm32-adc” compatible.

Name	Type	Details
`reg`	`array`	register space This property is required. See Important properties for more information.
`clocks`	`phandle-array`	Clock gate information This property is required.
`interrupts`	`array`	interrupts for device This property is required. See Important properties for more information.
`#address-cells`	`int`	number of address cells in reg property Constant value: `1`
`#size-cells`	`int`	number of size cells in reg property
`status`	`string`	indicates the operational status of a device Legal values: `'ok'`, `'okay'`, `'disabled'`, `'reserved'`, `'fail'`, `'fail-sss'` See Important properties for more information.
`compatible`	`string-array`	compatible strings This property is required. See Important properties for more information.
`reg-names`	`string-array`	name of each register space
`interrupts-extended`	`compound`	extended interrupt specifier for device
`interrupt-names`	`string-array`	name of each interrupt
`interrupt-parent`	`phandle`	phandle to interrupt controller node
`label`	`string`	Human readable string describing the device (used as device_get_binding() argument) See Important properties for more information. This property is deprecated.
`clock-names`	`string-array`	name of each clock
`dmas`	`phandle-array`	DMA channels specifiers
`dma-names`	`string-array`	Provided names of DMA channel specifiers
`io-channels`	`phandle-array`	IO channels specifiers
`io-channel-names`	`string-array`	Provided names of IO channel specifiers
`mboxes`	`phandle-array`	mailbox / IPM channels specifiers
`mbox-names`	`string-array`	Provided names of mailbox / IPM channel specifiers
`wakeup-source`	`boolean`	Property to identify that a device can be used as wake up source. When this property is provided a specific flag is set into the device that tells the system that the device is capable of wake up the system. Wake up capable devices are disabled (interruptions will not wake up the system) by default but they can be enabled at runtime if necessary.
`power-domain`	`phandle`	Power domain the device belongs to. The device will be notified when the power domain it belongs to is either suspended or resumed.

Child node properties

Name	Type	Details
`reg`	`array`	Channel identifier. This property is required. See Important properties for more information.
`zephyr,gain`	`string`	Gain selection: - ADC_GAIN_1_6: x 1/6 - ADC_GAIN_1_5: x 1/5 - ADC_GAIN_1_4: x 1/4 - ADC_GAIN_1_3: x 1/3 - ADC_GAIN_2_5: x 2/5 - ADC_GAIN_1_2: x 1/2 - ADC_GAIN_2_3: x 2/3 - ADC_GAIN_4_5: x 4/5 - ADC_GAIN_1: x 1 - ADC_GAIN_2: x 2 - ADC_GAIN_3: x 3 - ADC_GAIN_4: x 4 - ADC_GAIN_6: x 6 - ADC_GAIN_8: x 8 - ADC_GAIN_12: x 12 - ADC_GAIN_16: x 16 - ADC_GAIN_24: x 24 - ADC_GAIN_32: x 32 - ADC_GAIN_64: x 64 - ADC_GAIN_128: x 128 This property is required. Legal values: `'ADC_GAIN_1_6'`, `'ADC_GAIN_1_5'`, `'ADC_GAIN_1_4'`, `'ADC_GAIN_1_3'`, `'ADC_GAIN_2_5'`, `'ADC_GAIN_1_2'`, `'ADC_GAIN_2_3'`, `'ADC_GAIN_4_5'`, `'ADC_GAIN_1'`, `'ADC_GAIN_2'`, `'ADC_GAIN_3'`, `'ADC_GAIN_4'`, `'ADC_GAIN_6'`, `'ADC_GAIN_8'`, `'ADC_GAIN_12'`, `'ADC_GAIN_16'`, `'ADC_GAIN_24'`, `'ADC_GAIN_32'`, `'ADC_GAIN_64'`, `'ADC_GAIN_128'`
`zephyr,reference`	`string`	Reference selection: - ADC_REF_VDD_1: VDD - ADC_REF_VDD_1_2: VDD/2 - ADC_REF_VDD_1_3: VDD/3 - ADC_REF_VDD_1_4: VDD/4 - ADC_REF_INTERNAL: Internal - ADC_REF_EXTERNAL0: External, input 0 - ADC_REF_EXTERNAL1: External, input 1 This property is required. Legal values: `'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'`
`zephyr,vref-mv`	`int`	This property can be used to specify the voltage (in millivolts) of the reference selected for this channel, so that applications can get that value if needed for some calculations. For the internal reference, the voltage can be usually obtained with a dedicated ADC API call, so there is no need to use this property in that case, but for other references this property can be useful.
`zephyr,acquisition-time`	`int`	Acquisition time. Use the ADC_ACQ_TIME macro to compose the value for this property or pass ADC_ACQ_TIME_DEFAULT to use the default setting for a given hardware (e.g. when the hardware does not allow to configure the acquisition time). This property is required.
`zephyr,input-positive`	`int`	Positive ADC input. Used only for drivers that select the ADC_CONFIGURABLE_INPUTS Kconfig option.
`zephyr,input-negative`	`int`	Negative ADC input. Used only for drivers that select the ADC_CONFIGURABLE_INPUTS Kconfig option. When specified, the channel is to be used in differential input mode, otherwise, single-ended mode is used.
`zephyr,resolution`	`int`	ADC resolution to be used for the channel.
`zephyr,oversampling`	`int`	Oversampling setting to be used for the channel. When specified, each sample is averaged from 2^N conversion results (where N is the provided value).

Specifier cell names

io-channel cells: input