Re: [PATCH v2 1/2] dt-bindings: net: dp83826: support TX data voltage tuning

[POPESCU Catalin]

On 08.02.24 08:35, Krzysztof Kozlowski wrote:
> [You don't often get email from krzysztof.kozlowski@xxxxxxxxxx. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
>
> This email is not from Hexagon’s Office 365 instance. Please be careful while clicking links, opening attachments, or replying to this email.
>
>
> On 07/02/2024 18:58, Catalin Popescu wrote:
>> Add properties ti,cfg-dac-minus-one-milli-percent and
>> ti,cfg-dac-plus-one-milli-percent to support voltage tuning
>> of logical levels -1/+1 of the MLT-3 encoded TX data.
>>
>> Signed-off-by: Catalin Popescu <catalin.popescu@xxxxxxxxxxxxxxxxxxxx>
>> ---
>> Changes in v2:
>>   - squash the 2 DT bindings patches in one single patch
>>   - drop redundant "binding" from the DT bindings patch title
>>   - rename DT properties and define them as percentage
>>   - add default value for each new DT property
>> ---
>>   .../devicetree/bindings/net/ti,dp83822.yaml    | 18 ++++++++++++++++++
>>   1 file changed, 18 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/net/ti,dp83822.yaml b/Documentation/devicetree/bindings/net/ti,dp83822.yaml
>> index db74474207ed..6bbd465e51d6 100644
>> --- a/Documentation/devicetree/bindings/net/ti,dp83822.yaml
>> +++ b/Documentation/devicetree/bindings/net/ti,dp83822.yaml
>> @@ -62,6 +62,24 @@ properties:
>>          for the PHY.  The internal delay for the PHY is fixed to 3.5ns relative
>>          to transmit data.
>>
>> +  ti,cfg-dac-minus-one-milli-percent:
>> +    description: |
>> +       DP83826 PHY only.
>> +       Sets the voltage ratio (with respect to the nominal value)
>> +       of the logical level -1 for the MLT-3 encoded TX data.
>> +    enum: [50000, 56250, 62500, 68750, 75000, 81250, 87500, 93750, 100000,
>> +           106250, 112500, 118750, 125000, 131250, 137500, 143750, 150000]
> I see all values being multiple of basis points, so why not using -bp
> suffix?

I can read :

   "-bp$":
     $ref: types.yaml#/definitions/int32-array
     description: basis points (1/100 of a percent)

In my case it's 1/1000 of a percent. As I'm not sure exactly what the 
author meant by "basis points", would this apply to my patch as well?

>
> Best regards,
> Krzysztof
>