Re: [PATCH v4] dt-bindings: net: New binding mctp-i2c-controller

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, 23 Sep 2021 11:34:06 +0800, Matt Johnston wrote:
> Used to define a local endpoint to communicate with MCTP peripherals
> attached to an I2C bus. This I2C endpoint can communicate with remote
> MCTP devices on the I2C bus.
> 
> In the example I2C topology below (matching the second yaml example) we
> have MCTP devices on busses i2c1 and i2c6. MCTP-supporting busses are
> indicated by the 'mctp-controller' DT property on an I2C bus node.
> 
> A mctp-i2c-controller I2C client DT node is placed at the top of the
> mux topology, since only the root I2C adapter will support I2C slave
> functionality.
>                                                .-------.
>                                                |eeprom |
>     .------------.     .------.               /'-------'
>     | adapter    |     | mux  --@0,i2c5------'
>     | i2c1       ----.*|      --@1,i2c6--.--.
>     |............|    \'------'           \  \  .........
>     | mctp-i2c-  |     \                   \  \ .mctpB  .
>     | controller |      \                   \  '.0x30   .
>     |            |       \  .........        \  '.......'
>     | 0x50       |        \ .mctpA  .         \ .........
>     '------------'         '.0x1d   .          '.mctpC  .
>                             '.......'          '.0x31   .
>                                                 '.......'
> (mctpX boxes above are remote MCTP devices not included in the DT at
> present, they can be hotplugged/probed at runtime. A DT binding for
> specific fixed MCTP devices could be added later if required)
> 
> Signed-off-by: Matt Johnston <matt@xxxxxxxxxxxxxxxxxxxx>
> ---
> 
> Changes:
> 
> v3->v4:
> Formatting and YAML syntax fixes, rename .yaml file to match
> 
> v2->v3:
> Change the MCTP indicator to being a property on the I2C bus node.
> 
> Thanks,
> Matt
> 
>  Documentation/devicetree/bindings/i2c/i2c.txt |  4 +
>  .../bindings/net/mctp-i2c-controller.yaml     | 92 +++++++++++++++++++
>  2 files changed, 96 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/mctp-i2c-controller.yaml
> 

Reviewed-by: Rob Herring <robh@xxxxxxxxxx>



[Index of Archives]     [Linux GPIO]     [Linux SPI]     [Linux Hardward Monitoring]     [LM Sensors]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux