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

Node specific propertiesDeprecated node specific propertiesBase properties

Properties not inherited from the base binding file.

Name	Type	Details
clock-frequency	int	Initial clock frequency in Hz
sq-size	int	Size of the submission queue for blocking requests Default value: 4
cq-size	int	Size of the completion queue for blocking requests Default value: 4
pinctrl-0	phandles	Pin configuration/s for the first state. Content is specific to the selected pin controller driver implementation. This property is required.
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.
nordic,clockpin-enable	array	List of signals that require CLOCKPIN setting enablement.
easydma-maxcnt-bits	int	Maximum number of bits available in the EasyDMA MAXCNT register. This property must be set at SoC level DTS files. This property is required.
memory-regions	phandle-array	List of memory region phandles
memory-region-names	string-array	A list of names, one for each corresponding phandle in memory-region
address-0	int	TWI slave address 0
address-1	int	TWI slave address 1