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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

 
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 */

This property is required.

scl-pin

int

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

This property is required.

clock-frequency

int

 
Initial clock frequency in Hz