linux-kernel - Re: [PATCH 3/7] dt-bindings: media: Document STM32MP25 VENC video encoder

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Message-ID: <fb77b886-b557-b2af-a2f5-c0057a95b589@foss.st.com>
Date:   Mon, 9 Oct 2023 15:06:28 +0200
From:   Hugues FRUCHET <hugues.fruchet@...s.st.com>
To:     Rob Herring <robh@...nel.org>, Adam Ford <aford173@...il.com>
CC:     Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>,
        <linux-media@...r.kernel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-rockchip@...ts.infradead.org>,
        Andrzej Pietrasiewicz <andrzej.p@...labora.com>
Subject: Re: [PATCH 3/7] dt-bindings: media: Document STM32MP25 VENC video
 encoder

Hi Rob,

On 10/6/23 18:27, Rob Herring wrote:
> On Wed, Oct 04, 2023 at 06:41:09PM -0500, Adam Ford wrote:
>> On Wed, Oct 4, 2023 at 4:16 AM Hugues Fruchet
>> <hugues.fruchet@...s.st.com> wrote:
>>>
>>> Add STM32MP25 VENC video encoder bindings.
>>>
>>> Signed-off-by: Hugues Fruchet <hugues.fruchet@...s.st.com>
>>> ---
>>>   .../bindings/media/st,stm32mp25-venc.yaml     | 56 +++++++++++++++++++
>>>   1 file changed, 56 insertions(+)
>>>   create mode 100644 Documentation/devicetree/bindings/media/st,stm32mp25-venc.yaml
>>>
>>> diff --git a/Documentation/devicetree/bindings/media/st,stm32mp25-venc.yaml b/Documentation/devicetree/bindings/media/st,stm32mp25-venc.yaml
>>> new file mode 100644
>>> index 000000000000..c69e0a34f675
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/media/st,stm32mp25-venc.yaml
>>> @@ -0,0 +1,56 @@
>>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>>> +
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/media/st,stm32mp25-venc.yaml#
>>
>> Can this dt-binding be made more generic, like something like
>> hantro-h1 or VC8000NanoE?
>>
>> I think there will be more boards that may incorporate the Hantro-H1
>> or a VC8000 in the future, because I don't think this IP is unique to
>> the STM32MP25.
> 
> Unless the underlying IP is well documented (i.e. public), then it's
> kind of pointless. Everyone will just invent their own numbers and names
> of clocks, resets, etc. unless someone can enforce not doing that.

Unfortunately the IP documentation is not public, there are no documents 
provided publicly by Verisilicon for the time being.

> 
> Rob

BR,
Hugues