nxp,flexcan
Vendor: NXP Semiconductors
Description
NXP FlexCAN controller
Example:
flexcan0: can@40024000 {
status = "okay";
compatible = "nxp,flexcan";
reg = <0x40024000 0x1000>;
interrupts = <78 0>, <79 0>, <80 0>, <81 0>;
interrupt-names = "warning", "error", "wake-up", "mb-0-15";
clocks = <&scg KINETIS_SCG_BUS_CLK>;
clk-source = <1>;
bus-speed = <125000>;
pinctrl-0 = <&pinmux_flexcan0>;
pinctrl-names = "default";
can-transceiver {
max-bitrate = <1000000>;
};
};
Properties
Top level properties
These property descriptions apply to “nxp,flexcan” nodes themselves. This page also describes child node properties in the following sections.
Properties not inherited from the base binding file.
Name |
Type |
Details |
|---|---|---|
|
|
Initial bitrate in bit/s.
This property is required. |
|
|
Initial sample point in per mille (e.g. 875 equals 87.5%).
If this is unset (or if it is set to 0), the initial sample point will default to 75.0% for
bitrates over 800 kbit/s, 80.0% for bitrates over 500 kbit/s, and 87.5% for all other
bitrates.
|
|
|
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>;
};
|
|
|
Pin configuration/s for the first state. Content is specific to the
selected pin controller driver implementation.
|
|
|
Pin configuration/s for the second state. See pinctrl-0.
|
|
|
Pin configuration/s for the third state. See pinctrl-0.
|
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|
Pin configuration/s for the fourth state. See pinctrl-0.
|
|
|
Pin configuration/s for the fifth state. See pinctrl-0.
|
|
|
Names for the provided states. The number of names needs to match the
number of states.
|
|
|
CAN engine clock source
This property is required. |
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 “nxp,flexcan” compatible.
Name |
Type |
Details |
|---|---|---|
|
|
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 the device belongs to.
The device will be notified when the power domain it belongs to is either
suspended or resumed.
|
|
|
Automatically configure the device for runtime power management after the
init function runs.
|
|
|
indicates the operational status of a device
Legal values: See Important properties for more information. |
|
|
compatible strings
This property is required. See Important properties for more information. |
|
|
register space
This property is required. See Important properties for more information. |
|
|
name of each register space
|
|
|
interrupts for device
This property is required. See Important properties for more information. |
|
|
extended interrupt specifier for device
|
|
|
name of each interrupt
|
|
|
phandle to interrupt controller node
|
|
|
Human readable string describing the device (used as device_get_binding() argument)
See Important properties for more information. This property is deprecated. |
|
|
Clock gate information
This property is required. |
|
|
name of each clock
|
|
|
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
|
|
|
Do not initialize device automatically on boot. Device should be manually
initialized using device_init().
|
Child node properties
Name |
Type |
Details |
|---|---|---|
|
|
The minimum bitrate supported by the CAN transceiver in bits/s.
|
|
|
The maximum bitrate supported by the CAN transceiver in bits/s.
This property is required. |