Re: [PATCH 2/8] dt-bindings: serial: fsl-linflexuart: convert to json-schema format

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On 13/08/2021 13:11, Chester Lin wrote:
> Hi Andreas,
> 
> On Thu, Aug 12, 2021 at 06:04:44PM +0200, Andreas Färber wrote:
>> On 05.08.21 08:54, Chester Lin wrote:
>>> Convert the FSL LINFlexD UART binding to json-schema.
>>>
>>> Signed-off-by: Chester Lin <clin@xxxxxxxx>
>>> ---
>>>  .../bindings/serial/fsl,s32-linflexuart.txt   | 22 ---------
>>>  .../bindings/serial/fsl,s32-linflexuart.yaml  | 48 +++++++++++++++++++
>>>  2 files changed, 48 insertions(+), 22 deletions(-)
>>>  delete mode 100644 Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.txt
>>>  create mode 100644 Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml
>>
>> Thanks for your effort, Chester.
>>
>>> diff --git a/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.txt b/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.txt
>>> deleted file mode 100644
>>> index f1bbe0826be5..000000000000
>>> --- a/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.txt
>>> +++ /dev/null
>>> @@ -1,22 +0,0 @@
>>> -* Freescale LINFlexD UART
>>> -
>>> -The LINFlexD controller implements several LIN protocol versions, as well as
>>> -support for full-duplex UART communication through 8-bit and 9-bit frames.
>>> -
>>> -See chapter 47 ("LINFlexD") in the reference manual[1].
>>> -
>>> -Required properties:
>>> -- compatible :
>>> -  - "fsl,s32v234-linflexuart" for LINFlexD configured in UART mode, which
>>> -    is compatible with the one integrated on S32V234 SoC
>>> -- reg : Address and length of the register set for the device
>>> -- interrupts : Should contain uart interrupt
>>> -
>>> -Example:
>>> -uart0: serial@40053000 {
>>> -	compatible = "fsl,s32v234-linflexuart";
>>> -	reg = <0x0 0x40053000 0x0 0x1000>;
>>> -	interrupts = <0 59 4>;
>>> -};
>>> -
>>> -[1] https://www.nxp.com/webapp/Download?colCode=S32V234RM
>>> diff --git a/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml b/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml
>>> new file mode 100644
>>> index 000000000000..acfe34706ccb
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml
>>> @@ -0,0 +1,48 @@
>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>
>> Since this is dual-licensed and BSD-2-Clause would seem compatible with
>> GPLv3, this could probably be s/GPL-2.0-only/GPL-2.0-or-later/ ? Not a
>> blocker.
> 
> There's no license identifier in the original file so it's not a problem to
> choose "GPL-2.0-or-later".

That is not entirely correct. If there is no explicit license in the
file, it's kernel's default so GPL-2.0-only. You cannot relicense
derivative work without getting permission from authors and copyright
holders.

However if you did not copy the text/description from original bindings,
your work won't be derivative so you can relicense it.

Best regards,
Krzysztof



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