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

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Message-ID: <4fba1603-5741-ec1b-122f-d6a92803f49a@linaro.org>
Date:   Fri, 23 Jun 2023 19:56:12 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     tanure@...ux.com
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 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.


---

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