Re: [PATCH 08/20] dt-bindings: pinctrl: ralink: add new compatible strings

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On Fri, Mar 03, 2023 at 03:28:37AM +0300, arinc9.unal@xxxxxxxxx wrote:
> From: Arınç ÜNAL <arinc.unal@xxxxxxxxxx>
> 
> Add the new mediatek compatible strings. Change the compatible string on
> the examples with the mediatek compatible strings.
> 
> Add the new compatible strings for mt7620, mt76x8, and rt305x to be able to
> properly document the pin muxing information of each SoC, or SoCs that use
> the same pinmux data.
> 
> Signed-off-by: Arınç ÜNAL <arinc.unal@xxxxxxxxxx>
> ---
>  .../devicetree/bindings/pinctrl/ralink,mt7620-pinctrl.yaml | 7 +++++--
>  .../devicetree/bindings/pinctrl/ralink,mt7621-pinctrl.yaml | 6 ++++--
>  .../devicetree/bindings/pinctrl/ralink,rt305x-pinctrl.yaml | 5 ++++-
>  3 files changed, 13 insertions(+), 5 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/ralink,mt7620-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/ralink,mt7620-pinctrl.yaml
> index cde6de77e228..a94d2e7a5f37 100644
> --- a/Documentation/devicetree/bindings/pinctrl/ralink,mt7620-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/ralink,mt7620-pinctrl.yaml
> @@ -17,7 +17,10 @@ description:
>  
>  properties:
>    compatible:
> -    const: ralink,mt7620-pinctrl
> +    enum:
> +      - mediatek,mt7620-pinctrl
> +      - mediatek,mt76x8-pinctrl
> +      - ralink,mt7620-pinctrl

To repeat the options from last time:

>Carrying both strings is a NAK. Either you (and everyone using
>these platforms) care about the ABI and are stuck with the "wrong"
>string. In the end, they are just unique identifiers. Or you don't care
>and break the ABI and rename everything. If you do that, do just that 
>in your patches and make it crystal clear in the commit msg that is 
>your intention and why that is okay.

Marketing/acquistion renames was just an example and common reason. That 
doesn't make other reasons okay. I don't see any reason given here.

If you want to break the ABI (do you??, because the commit message 
still doesn't say), then you don't need "ralink,mt7620-pinctrl".

Rob



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