This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

microchip,mcp2515 (on spi bus)

Vendor: Microchip Technology Inc.

Description

These nodes are “can” bus nodes.

MCP2515 SPI CAN controller

Properties

Properties not inherited from the base binding file.

Name

Type

Details

osc-freq

int

Frequency of the external oscillator

This property is required.

int-gpios

phandle-array

Interrupt pin.

This pin signals active low when produced by the controller. The
property value should ensure the flags properly describe the signal
that is presented to the driver.

This property is required.

spi-max-frequency

int

Maximum clock frequency of device's SPI interface in Hz

This property is required.

duplex

int

Duplex mode, full or half. By default it's always full duplex thus 0
as this is, by far, the most common mode.
Use the macros not the actual enum value, here is the concordance
list (see dt-bindings/spi/spi.h)
  0    SPI_FULL_DUPLEX
  2048 SPI_HALF_DUPLEX

Legal values: 0, 2048

supply-gpios

phandle-array

GPIO specifier that controls power to the device.

This property should be provided when the device has a dedicated
switch that controls power to the device.  The supply state is
entirely the responsibility of the device driver.

Contrast with vin-supply.

vin-supply

phandle

Reference to the regulator that controls power to the device.
The referenced devicetree node must have a regulator compatible.

This property should be provided when device power is supplied
by a shared regulator.  The supply state is dependent on the
request status of all devices fed by the regulator.

Contrast with supply-gpios.  If both properties are provided
then the regulator must be requested before the supply GPIOS is
set to an active state, and the supply GPIOS must be set to an
inactive state before releasing the regulator.

bus-speed

int

bus speed in Baud/s

This property is required.

sjw

int

Resynchronization jump width (ISO 11898-1)

This property is required.

prop-seg

int

Time quantums of propagation segment (ISO 11898-1)

phase-seg1

int

Time quantums of phase buffer 1 segment (ISO 11898-1)

phase-seg2

int

Time quantums of phase buffer 2 segment (ISO 11898-1)

sample-point

int

Sample point in permille. This param is required if segments are not given. If the sample point is given, the segments are ignored.