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nordic,nrf-twis

Vendor: Nordic Semiconductor

Description

These nodes are “i2c” bus nodes.

Nordic nRF family TWIS (TWI slave with EasyDMA).

Note: for Zephyr users, the I2C slave API is not available for
these devices. See this issue for more details and a HAL-based
workaround:

    https://github.com/zephyrproject-rtos/zephyr/issues/21445

This binding can be used for nodes which can represent TWIS
peripherals. A single SoC peripheral ID is often associated with
multiple I2C peripherals, like a TWIM and a TWIS. You can choose
TWIS by setting the node's "compatible" to "nordic,nrf-twis"
and its "status" to "okay", e.g. using an overlay file like this:

    /* This is for TWIS0 -- change to "i2c1" for TWIS1, etc. */
    &i2c0 {
            compatible = "nordic,nrf-twis";
            status = "okay";
            /* other property settings can go here */
    };

This works on any supported SoC, for all TWIS instances.

Properties

Properties not inherited from the base binding file.

Name

Type

Details

address-0

int

TWI slave address 0

address-1

int

TWI slave address 1

sda-pin

int

IMPORTANT: This option will only be used if the new pin control driver
is not enabled. It will be deprecated in the future.

The SDA pin to use.

For pins P0.0 through P0.31, use the pin number. For example,
to use P0.16 for SDA, set:

    sda-pin = <16>;

For pins P1.0 through P1.31, add 32 to the pin number. For
example, to use P1.2 for SDA, set:

    sda-pin = <34>;  /* 32 + 2 */

scl-pin

int

IMPORTANT: This option will only be used if the new pin control driver
is not enabled. It will be deprecated in the future.

The SCL pin to use. The pin numbering scheme is the same as
the sda-pin property's.

clock-frequency

int

Initial clock frequency in Hz

pinctrl-0

phandles

Pin configuration/s for the first state. Content is specific to the
selected pin controller driver implementation.

pinctrl-1

phandles

Pin configuration/s for the second state. See pinctrl-0.

pinctrl-2

phandles

Pin configuration/s for the third state. See pinctrl-0.

pinctrl-3

phandles

Pin configuration/s for the fourth state. See pinctrl-0.

pinctrl-4

phandles

Pin configuration/s for the fifth state. See pinctrl-0.

pinctrl-names

string-array

Names for the provided states. The number of names needs to match the
number of states.