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dts: bindings: adc: add new dts bindings for stm32 adc resolution

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Add a binding for STM32 ADC to specify the resolutions and all associated
register information (through a STM32_ADC_RES macro).

Signed-off-by: Guillaume Gautier <guillaume.gautier-ext@st.com>
This commit is contained in:
Guillaume Gautier 2023-04-04 09:06:42 +02:00 • committed by Carles Cufí
commit e636d88cd2
1 changed files with 14 additions and 0 deletions
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dts/bindings/adc/st,stm32-adc.yaml
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@ -44,5 +44,19 @@ properties:
type: int
description: Indicates the ADC channel of the internal vbat monitoring.
resolutions:
type: array
required: true
description: |
List of the resolutions supported by the ADC instance. They should be
values created with STM32_ADC_RES macro or similar. Their order is not
important. For example for STM32F4:
<STM32_ADC_RES(12, 0x00) STM32_ADC_RES(10, 0x01)
STM32_ADC_RES(8, 0x02) STM32_ADC_RES(6, 0x03)>
The two parameters are the resolution (for example 10 bits) and the
corresponding register value (0x01 for a 10-bit resolution).
By design, these macros also contains all register information (address,
field offset and field mask) necessary to properly set the resolution.
io-channel-cells:
- input