espressif,esp32-twai
Vendor: Espressif Systems
Description
Espressif ESP32 Two-Wire Automotive Interface (TWAI)
Properties
Top level properties
These property descriptions apply to “espressif,esp32-twai” nodes themselves. This page also describes child node properties in the following sections.
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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Clock divider for the CLKOUT signal. If not set, the CLKOUT signal is turned off.
Valid values are 1 or any even number from 2 to 14 for ESP32 and 2 to 490 for newer
Espressif MCUs like ESP32-C3.
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bus speed in Baud/s
This property is required. |
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Resynchronization jump width (ISO 11898-1)
This property is required. |
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Time quantums of propagation segment (ISO 11898-1)
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Time quantums of phase buffer 1 segment (ISO 11898-1)
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Time quantums of phase buffer 2 segment (ISO 11898-1)
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Sample point in permille. This param is required if segments are not given. If the sample point is given, the segments are ignored.
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Actively controlled CAN transceiver.
Example:
transceiver0: can-phy0 {
compatible = "nxp,tja1040", "can-transceiver-gpio";
standby-gpios = <gpioa 0 GPIO_ACTIVE_HIGH>;
max-bitrate = <1000000>;
#phy-cells = <0>;
};
&can0 {
status = "okay";
phys = <&transceiver0>;
};
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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 “espressif,esp32-twai” 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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Clock gate information
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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name of each clock
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number of address cells in reg property
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number of size cells in reg property
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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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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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Power domain the device belongs to.
The device will be notified when the power domain it belongs to is either
suspended or resumed.
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Automatically configure the device for runtime power management after the
init function runs.
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Child node properties
Name |
Type |
Details |
|---|---|---|
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The maximum bitrate supported by the CAN transceiver in bits/s.
This property is required. |