linux-kernel - Re: [PATCH V2 1/2] dt-bindings: gpio: Add a header file for Amlogic C3 SoCs

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Message-ID: <424cb61a-9102-9a43-c999-36939e8d6cc0@amlogic.com>
Date:   Tue, 11 Jul 2023 10:55:40 +0800
From:   Huqiang Qin <huqiang.qin@...ogic.com>
To:     Conor Dooley <conor@...nel.org>
Cc:     linus.walleij@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        neil.armstrong@...aro.org, khilman@...libre.com,
        jbrunet@...libre.com, martin.blumenstingl@...glemail.com,
        brgl@...ev.pl, andy@...nel.org, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 1/2] dt-bindings: gpio: Add a header file for Amlogic
 C3 SoCs

Hi Conor,

On 2023/7/11 0:38, Conor Dooley wrote:
>> diff --git a/Documentation/devicetree/bindings/pinctrl/amlogic,meson-pinctrl-a1.yaml b/Documentation/devicetree/bindings/pinctrl/amlogic,meson-pinctrl-a1.yaml
>> index 99080c9eaac3..e019b6aa6ca3 100644
>> --- a/Documentation/devicetree/bindings/pinctrl/amlogic,meson-pinctrl-a1.yaml
>> +++ b/Documentation/devicetree/bindings/pinctrl/amlogic,meson-pinctrl-a1.yaml
>> @@ -17,6 +17,7 @@ properties:
>>      enum:
>>        - amlogic,meson-a1-periphs-pinctrl
>>        - amlogic,meson-s4-periphs-pinctrl
>> +      - amlogic,c3-periphs-pinctrl
> Alphanumerical order here perhaps?

Okay

> 
>> +++ b/include/dt-bindings/gpio/amlogic-c3-gpio.h
>> @@ -0,0 +1,72 @@
>> +/* SPDX-License-Identifier: (GPL-2.0-only OR MIT) */
> Any reason to deviate from the usual license terms for bindings, which is
> "GPL-2.0-only OR BSD-2-Clause"?

I initially used the license commonly used by Amlogic (reference: meson-s4-gpio.h):
```
/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
```

But when I checked the patch, some warnings appeared:
```
WARNING: DT binding headers should be licensed (GPL-2.0-only OR .*)
#37: FILE: include/dt-bindings/gpio/amlogic-c3-gpio.h:1:
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
```
So I followed the prompts and changed the license.

Can I ignore this warning and use the (GPL-2.0+ OR MIT) license?

---
Best Regards,
Huqiang Qin