cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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mctp-i2c-controller.yaml (2190B)

      1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
      2%YAML 1.2
      3---
      4$id: http://devicetree.org/schemas/net/mctp-i2c-controller.yaml#
      5$schema: http://devicetree.org/meta-schemas/core.yaml#
      6
      7title: MCTP I2C transport binding
      8
      9maintainers:
     10  - Matt Johnston <matt@codeconstruct.com.au>
     11
     12description: |
     13  An mctp-i2c-controller defines a local MCTP endpoint on an I2C controller.
     14  MCTP I2C is specified by DMTF DSP0237.
     15
     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.
     21
     22properties:
     23  compatible:
     24    const: mctp-i2c-controller
     25
     26  reg:
     27    minimum: 0x40000000
     28    maximum: 0x4000007f
     29    description: |
     30      7 bit I2C address of the local endpoint.
     31      I2C_OWN_SLAVE_ADDRESS (1<<30) flag must be set.
     32
     33additionalProperties: false
     34
     35required:
     36  - compatible
     37  - reg
     38
     39examples:
     40  - |
     41    // Basic case of a single I2C bus
     42    #include <dt-bindings/i2c/i2c.h>
     43
     44    i2c {
     45      #address-cells = <1>;
     46      #size-cells = <0>;
     47      mctp-controller;
     48
     49      mctp@30 {
     50        compatible = "mctp-i2c-controller";
     51        reg = <(0x30 | I2C_OWN_SLAVE_ADDRESS)>;
     52      };
     53    };
     54
     55  - |
     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>
     60
     61    i2c1: i2c {
     62      #address-cells = <1>;
     63      #size-cells = <0>;
     64      mctp-controller;
     65
     66      mctp@50 {
     67        compatible = "mctp-i2c-controller";
     68        reg = <(0x50 | I2C_OWN_SLAVE_ADDRESS)>;
     69      };
     70    };
     71
     72    i2c-mux {
     73      #address-cells = <1>;
     74      #size-cells = <0>;
     75      i2c-parent = <&i2c1>;
     76
     77      i2c5: i2c@0 {
     78        #address-cells = <1>;
     79        #size-cells = <0>;
     80        reg = <0>;
     81        eeprom@33 {
     82          reg = <0x33>;
     83        };
     84      };
     85
     86      i2c6: i2c@1 {
     87        #address-cells = <1>;
     88        #size-cells = <0>;
     89        reg = <1>;
     90        mctp-controller;
     91      };
     92    };