nordic,nrf-twis¶

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.

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 “nordic,nrf-twis” compatible.

Name	Type	Details
`reg`	`array`	register space This property is required. See Important properties for more information.
`interrupts`	`array`	interrupts for device This property is required. See Important properties for more information.
`#address-cells`	`int`	number of address cells in reg property This property is required. Constant value: `1`
`#size-cells`	`int`	number of size cells in reg property This property is required.
`label`	`string`	Human readable string describing the device (used as device_get_binding() argument) This property is required. See Important properties for more information.
`status`	`string`	indicates the operational status of a device Legal values: `'ok'`, `'okay'`, `'disabled'`, `'reserved'`, `'fail'`, `'fail-sss'` See Important properties for more information.
`compatible`	`string-array`	compatible strings This property is required. See Important properties for more information.
`reg-names`	`string-array`	name of each register space
`interrupts-extended`	`compound`	extended interrupt specifier for device
`interrupt-names`	`string-array`	name of each interrupt
`interrupt-parent`	`phandle`	phandle to interrupt controller node
`clocks`	`phandle-array`	Clock gate information
`clock-names`	`string-array`	name of each clock
`dmas`	`phandle-array`	DMA channels specifiers
`dma-names`	`string-array`	Provided names of DMA channel specifiers
`io-channels`	`phandle-array`	IO channels specifiers
`io-channel-names`	`string-array`	Provided names of IO channel specifiers
`mboxes`	`phandle-array`	mailbox / IPM channels specifiers
`mbox-names`	`string-array`	Provided names of mailbox / IPM channel specifiers
`wakeup-source`	`boolean`	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`	`phandle`	Power domain the device belongs to. The device will be notified when the power domain it belongs to is either suspended or resumed.