espressif,esp32-i2c
Vendor: Espressif Systems
Description
These nodes are “i2c” bus nodes.
ESP32 I2C
Properties
Properties not inherited from the base binding file.
Name |
Type |
Details |
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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 first state. Content is specific to the
selected pin controller driver implementation.
This property is required. |
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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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Names for the provided states. The number of names needs to match the
number of states.
This property is required. |
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GPIO to which the I2C SCL signal is routed. This is only required
if the target SoC does not have support in hardware for clearing
the I2C bus in case of a communication failure
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GPIO to which the I2C SDA signal is routed. This is only required
if the target SoC does not have support in hardware for clearing
the I2C bus in case of a communication failure
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Set I2C TX data as LSB
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Set I2C RX data as LSB
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Timeout for unchanged SCL during clock stretching of the I2C target in
microseconds.
If not set or 0, the timeout is disabled or set to the maximum possible
value if the MCU does not support disabling the timeout.
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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 “espressif,esp32-i2c” compatible.
Name |
Type |
Details |
|---|---|---|
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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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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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register space
This property is required. See Important properties for more information. |
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name of each register space
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interrupts for device
See Important properties for more information. |
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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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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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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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