linux-kernel - Re: [PATCH v2 2/4] dt-bindings: arm: fsl: fix DEBIX binding

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Message-ID: <8c91fd56-a815-d2ff-6f62-168eb76ae6c1@pengutronix.de>
Date:   Mon, 17 Jul 2023 19:38:52 +0200
From:   Ahmad Fatoum <a.fatoum@...gutronix.de>
To:     Marco Felsch <m.felsch@...gutronix.de>
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, shawnguo@...nel.org, kernel@...gutronix.de,
        festevam@...il.com, linux-imx@....com,
        laurent.pinchart@...asonboard.com, dan.scally@...asonboard.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 2/4] dt-bindings: arm: fsl: fix DEBIX binding

On 17.07.23 19:24, Marco Felsch wrote:
> On 23-07-17, Ahmad Fatoum wrote:
>> On 17.07.23 18:51, Marco Felsch wrote:
>>> The current imx8mp-debix-model-a.dts uses all three compatibles. Fix the
>>> corresponding bindings by adding an own entry for it. Mark
>>> polyhex,imx8mp-debix as deprecated but keep it within the dts file since
>>> we already have a user for it [1].
>>>
>>> [1] https://elixir.bootlin.com/barebox/v2023.07.1/source/arch/arm/ \
>>>     boards/polyhex-debix/board.c#L38
>>>
>>> Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
>>> ---
>>> Changelog:
>>>
>>> v2:
>>> - deprecate polyhex,imx8mp-debix
>>>
>>>  Documentation/devicetree/bindings/arm/fsl.yaml | 10 ++++++++--
>>>  1 file changed, 8 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
>>> index 15d4110840654..b29974e3c30b3 100644
>>> --- a/Documentation/devicetree/bindings/arm/fsl.yaml
>>> +++ b/Documentation/devicetree/bindings/arm/fsl.yaml
>>> @@ -1019,8 +1019,6 @@ properties:
>>>                - dmo,imx8mp-data-modul-edm-sbc # i.MX8MP eDM SBC
>>>                - fsl,imx8mp-evk            # i.MX8MP EVK Board
>>>                - gateworks,imx8mp-gw74xx   # i.MX8MP Gateworks Board
>>> -              - polyhex,imx8mp-debix      # Polyhex Debix boards
>>> -              - polyhex,imx8mp-debix-model-a # Polyhex Debix Model A Board
>>>                - toradex,verdin-imx8mp     # Verdin iMX8M Plus Modules
>>>                - toradex,verdin-imx8mp-nonwifi  # Verdin iMX8M Plus Modules without Wi-Fi / BT
>>>                - toradex,verdin-imx8mp-wifi  # Verdin iMX8M Plus Wi-Fi / BT Modules
>>> @@ -1054,6 +1052,14 @@ properties:
>>>            - const: phytec,imx8mp-phycore-som         # phyCORE-i.MX8MP SoM
>>>            - const: fsl,imx8mp
>>>  
>>> +      - description: Polyhex DEBIX i.MX8MP based SBCs
>>> +        items:
>>> +          - enum:
>>> +              - polyhex,imx8mp-debix-model-a        # Polyhex Debix Model A Board
>>> +          - const: polyhex,imx8mp-debix             # Polyhex Debix boards
>>> +            deprecated: true
>>
>> I don't see why you need to deprecate this. Can't you just change the comment
>> to read "Polyhex i.MX8MP SBCs" or similar?
> 
> This was suggested by Krzysztof, since polyhex,imx8mp-debix was to
> generic. I can keep it without the deprecation notice and just change
> the comment since we need to keep dts compatible anyway.

I agree that using it as compatible for both SBC and SoMs, when the boards
aren't based on the SoM isn't useful. I still think it's useful to have
a compatible for "Debix i.MX8MP SBCs" that spans current lineup of Model A,
Model B, B SE and possible future compatibles.

Cheers,
Ahmad

> 
> Regards,
>   Marco
> 

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