linux-kernel - Re: [PATCH 1/2] dt-bindings: fsi: Document the IBM I2C Responder virtual FSI master

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Message-ID: <2fd38f3d-e26b-6888-10b7-8da06f94bfac@linux.ibm.com>
Date:   Wed, 25 Jan 2023 15:35:32 -0600
From:   Eddie James <eajames@...ux.ibm.com>
To:     Andrew Jeffery <andrew@...id.au>, linux-fsi@...ts.ozlabs.org
Cc:     devicetree@...r.kernel.org,
        Alistair Popple <alistair@...ple.id.au>,
        linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Subject: Re: [PATCH 1/2] dt-bindings: fsi: Document the IBM I2C Responder
 virtual FSI master


On 1/19/23 18:22, Andrew Jeffery wrote:
>
> On Fri, 20 Jan 2023, at 04:17, Eddie James wrote:
>> The I2C Responder translates I2C commands to CFAM or SCOM operations,
>> effectively implementing an FSI master.
>>
>> Signed-off-by: Eddie James <eajames@...ux.ibm.com>
>> ---
>>   .../devicetree/bindings/fsi/ibm,i2cr.yaml     | 42 +++++++++++++++++++
>>   1 file changed, 42 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/fsi/ibm,i2cr.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/fsi/ibm,i2cr.yaml
>> b/Documentation/devicetree/bindings/fsi/ibm,i2cr.yaml
>> new file mode 100644
>> index 000000000000..929ca10988f9
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/fsi/ibm,i2cr.yaml
>> @@ -0,0 +1,42 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/fsi/ibm,i2cr.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: IBM I2C Responder virtual FSI master
>> +
>> +maintainers:
>> +  - Eddie James <eajames@...ux.ibm.com>
>> +
>> +description: |
>> +  This binding describes an I2C device called the I2C Responder
>> (I2CR). The
>> +  I2CR translates commands sent over I2C bus to FSI CFAM reads and
>> writes or
>> +  SCOM operations. The CFAM access means that the I2CR can act as an
>> FSI
>> +  master.
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - ibm,i2cr
>
> I think this should be a bit more descriptive and at least mention that
> it's FSI-related, e.g. `ibm,fsi-i2cr`? Thoughts?


Yea that probably makes sense.

Thanks for the suggestion!

Eddie


>
>> +
>> +   reg:
>> +    maxItems: 1
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> + - |
>> +    i2c {
>> +      #address-cells = <1>;
>> +      #size-cells = <0>;
>> +
>> +      i2cr@20 {
>> +        compatible = "ibm,i2cr";
> Change this in accordance with the above.
>
> Andrew