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- # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
- %YAML 1.2
- ---
- $id: http://devicetree.org/schemas/i2c/i2c-atr.yaml#
- $schema: http://devicetree.org/meta-schemas/core.yaml#
- title: Common i2c address translator properties
- maintainers:
- - Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
- description:
- An I2C Address Translator (ATR) is a device with an I2C slave parent
- ("upstream") port and N I2C master child ("downstream") ports, and
- forwards transactions from upstream to the appropriate downstream port
- with a modified slave address. The address used on the parent bus is
- called the "alias" and is (potentially) different from the physical
- slave address of the child bus. Address translation is done by the
- hardware.
- properties:
- i2c-alias-pool:
- $ref: /schemas/types.yaml#/definitions/uint32-array
- description:
- I2C alias pool is a pool of I2C addresses on the main I2C bus that can be
- used to access the remote peripherals on the serializer's I2C bus. The
- addresses must be available, not used by any other peripheral. Each
- remote peripheral is assigned an alias from the pool, and transactions to
- that address will be forwarded to the remote peripheral, with the address
- translated to the remote peripheral's real address. This property is not
- needed if there are no I2C addressable remote peripherals.
- additionalProperties: true
- ...
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