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

From: Krzysztof Kozlowski
Date: Fri Jun 23 2023 - 13:56:22 EST


On 23/06/2023 19:53, Lucas Tanure wrote:
> On Fri, Jun 23, 2023 at 9:51 AM Krzysztof Kozlowski
> <krzysztof.kozlowski@xxxxxxxxxx> 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@xxxxxxxxx>
>>> ---
>>> .../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@xxxxxxxxxx>
>>
> 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.


---

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Best regards,
Krzysztof