st,stm32-i2c-v2
Vendor: STMicroelectronics
Note
An implementation of a driver matching this compatible is available in drivers/i2c/i2c_ll_stm32.c.
Description
These nodes are “i2c” bus nodes.
STM32 I2C V2 controller
Properties
Properties not inherited from the base binding file.
Name |
Type |
Details |
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Pin configuration/s for the first state. Content is specific to the
selected pin controller driver implementation.
This property is required. |
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Names for the provided states. The number of names needs to match the
number of states.
This property is required. |
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An optional table of pre-computed i2c timing values with the
matching clock configuration.
Precise timings values for a given Hardware can be pre-computed
with a tool like STM32CubeMX or directly from I2C_TIMINGR register
description.
Because timing value is valid for a given I2C peripheral clock
frequency and target I2C bus clock, each timing value must be
provided with the matching configuration.
The resulting table entries should look like <periph_clock
clock-frequency timing>
For example timings could be defined as
timings = <64000000 I2C_BITRATE_STANDARD 0x10707DBC>,
<64000000 I2C_BITRATE_FAST 0x00603D56>,
<56000000 I2C_BITRATE_STANDARD 0x10606DA4>,
<56000000 I2C_BITRATE_FAST 0x00501D63>;
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GPIO to which the I2C SCL signal is routed. This is only needed for
I2C bus recovery support.
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GPIO to which the I2C SDA signal is routed. This is only needed for
I2C bus recovery support.
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Initial clock frequency in Hz
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Size of the submission queue for blocking requests
Default value: |
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Size of the completion queue for blocking requests
Default value: |
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Pin configuration/s for the second state. See pinctrl-0.
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Pin configuration/s for the third state. See pinctrl-0.
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Pin configuration/s for the fourth state. See pinctrl-0.
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Pin configuration/s for the fifth state. See pinctrl-0.
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Deprecated properties not inherited from the base binding file.
(None)
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-i2c-v2” compatible.
Name |
Type |
Details |
|---|---|---|
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register space
This property is required. See Important properties for more information. |
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interrupts for device
This property is required. See Important properties for more information. |
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number of address cells in reg property
This property is required. Constant value: |
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number of size cells in reg property
This property is required. |
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indicates the operational status of a device
Legal values: See Important properties for more information. |
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compatible strings
This property is required. See Important properties for more information. |
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name of each register space
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extended interrupt specifier for device
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name of each interrupt
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phandle to interrupt controller node
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Human readable string describing the device (used as device_get_binding() argument)
See Important properties for more information. This property is deprecated. |
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Clock gate information
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name of each clock
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DMA channels specifiers
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Provided names of DMA channel specifiers
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IO channels specifiers
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Provided names of IO channel specifiers
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mailbox / IPM channels specifiers
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Provided names of mailbox / IPM channel specifiers
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Power domain specifiers
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Provided names of power domain specifiers
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Number of cells in power-domains property
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Do not initialize device automatically on boot. Device should be manually
initialized using device_init().
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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.
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Automatically configure the device for runtime power management after the
init function runs.
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List of power states that will disable this device power.
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