1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/net/mctp-i2c-controller.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: MCTP I2C transport
10 - Matt Johnston <matt@codeconstruct.com.au>
13 An mctp-i2c-controller defines a local MCTP endpoint on an I2C controller.
14 MCTP I2C is specified by DMTF DSP0237.
16 An mctp-i2c-controller must be attached to an I2C adapter which supports
17 slave functionality. I2C busses (either directly or as subordinate mux
18 busses) are attached to the mctp-i2c-controller with a 'mctp-controller'
19 property on each used bus. Each mctp-controller I2C bus will be presented
20 to the host system as a separate MCTP I2C instance.
24 const: mctp-i2c-controller
30 7 bit I2C address of the local endpoint.
31 I2C_OWN_SLAVE_ADDRESS (1<<30) flag must be set.
33 additionalProperties: false
41 // Basic case of a single I2C bus
42 #include <dt-bindings/i2c/i2c.h>
50 compatible = "mctp-i2c-controller";
51 reg = <(0x30 | I2C_OWN_SLAVE_ADDRESS)>;
56 // Mux topology with multiple MCTP-handling busses under
57 // a single mctp-i2c-controller.
58 // i2c1 and i2c6 can have MCTP devices, i2c5 does not.
59 #include <dt-bindings/i2c/i2c.h>
67 compatible = "mctp-i2c-controller";
68 reg = <(0x50 | I2C_OWN_SLAVE_ADDRESS)>;