368acbe2d1
This commit aligns TWIM shim to utilize memory-region property. The memory-region is not required property that enables user to specify placement of dma buffers in memory region. It is done by assigning to memory-region property, phandle to node with zephyr,memory-region and mimo-sram compatible. When memory-region property is not specified for given instance, buffer is placed in default RAM region with other data. Signed-off-by: Adam Wojasinski <adam.wojasinski@nordicsemi.no>
40 lines
1.2 KiB
YAML
40 lines
1.2 KiB
YAML
# Copyright (c) 2019 Nordic Semiconductor ASA
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# SPDX-License-Identifier: Apache-2.0
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description: |
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Nordic nRF family TWIS (TWI slave with EasyDMA).
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Note: for Zephyr users, the I2C slave API is not available for
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these devices. See this issue for more details and a HAL-based
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workaround:
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https://github.com/zephyrproject-rtos/zephyr/issues/21445
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This binding can be used for nodes which can represent TWIS
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peripherals. A single SoC peripheral ID is often associated with
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multiple I2C peripherals, like a TWIM and a TWIS. You can choose
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TWIS by setting the node's "compatible" to "nordic,nrf-twis"
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and its "status" to "okay", e.g. using an overlay file like this:
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/* This is for TWIS0 -- change to "i2c1" for TWIS1, etc. */
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&i2c0 {
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compatible = "nordic,nrf-twis";
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status = "okay";
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/* other property settings can go here */
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};
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This works on any supported SoC, for all TWIS instances.
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compatible: "nordic,nrf-twis"
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include: ["nordic,nrf-twi-common.yaml", "memory-region.yaml"]
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properties:
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address-0:
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type: int
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description: TWI slave address 0
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address-1:
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type: int
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description: TWI slave address 1
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