linux-kernel - Re: [PATCH v5 2/4] dt-bindings: serial: amlogic,meson-uart: Add compatible string for T7

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Message-ID: <CAJX_Q+3GX5NEtx7DA-vapU45dVooTpXxrwUZsNVAKd9JN2kKXA@mail.gmail.com>
Date:   Tue, 27 Jun 2023 09:51:09 +0100
From:   Lucas Tanure <tanure@...ux.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Jerome Brunet <jbrunet@...libre.com>,
        Kevin Hilman <khilman@...libre.com>, Nick <nick@...das.com>,
        Artem <art@...das.com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v5 2/4] dt-bindings: serial: amlogic,meson-uart: Add
 compatible string for T7

On Fri, Jun 23, 2023 at 6:56 PM Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 23/06/2023 19:53, Lucas Tanure wrote:
> > On Fri, Jun 23, 2023 at 9:51 AM Krzysztof Kozlowski
> > <krzysztof.kozlowski@...aro.org> wrote:
> >>
> >> On 23/06/2023 10:12, Lucas Tanure wrote:
> >>> Amlogic T7 SoCs uses the same UART controller as S4 SoCs and G12A.
> >>> There is no need for an extra compatible line in the driver, but
> >>> add T7 compatible line for documentation.
> >>>
> >>> Signed-off-by: Lucas Tanure <tanure@...ux.com>
> >>> ---
> >>>  .../devicetree/bindings/serial/amlogic,meson-uart.yaml        | 4 ++++
> >>>  1 file changed, 4 insertions(+)
> >>>
> >>> diff --git a/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml b/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
> >>> index 01ec45b3b406..ad970c9ed1c7 100644
> >>> --- a/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
> >>> +++ b/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
> >>> @@ -50,6 +50,10 @@ properties:
> >>>          items:
> >>>            - const: amlogic,meson-g12a-uart
> >>>            - const: amlogic,meson-gx-uart
> >>> +      - description: UART controller on T7 compatible SoCs
> >>
> >> Your description is rather incorrect. This is UART on SoCs compatible
> >> with S4, not with T7. Otherwise what do you expect to grow later when
> >> adding more compatible devices? Just drop the description, it's kind of
> >> obvious when done correctly (but can be misleading if done wrong).
> >>
> >> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> >>
> > Sorry, but S4 is already added in another way, which accepts just an
> > S4 compatible string.
> > But for T7 we need a fallback.
> > Could you let me know what you're asking here? Redo S4 and add T7? Or
> > do T7 in another different way that I didn't get?
>
> I comment only about the description, so why touching anything else? You
> did not add here T7 compatible SoCs. You added here S4 compatible SoCs.
>
> > Do you want a v6 patch series? If yes, could you be more clear about
> > how you want it?
>
> No need. If you are going to send v6, you can as well drop the description.
>
I can't just remove that line, as it doesn't pass the checks.
I will change it to S4.

>
> ---
>
> This is an automated instruction, just in case, because many review tags
> are being ignored. If you do not know the process, here is a short
> explanation:
>
> Please add Acked-by/Reviewed-by/Tested-by tags when posting new
> versions, under or above your Signed-off-by tag. Tools like b4 can help
> here. However, there's no need to repost patches *only* to add the tags.
> The upstream maintainer will do that for acks received on the version
> they apply.
>
> https://elixir.bootlin.com/linux/v5.17/source/Documentation/process/submitting-patches.rst#L540
>
> Best regards,
> Krzysztof
>