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Message-ID: <d3f56d51-beb0-4f7a-a1f6-3ae03bbc9826@linaro.org>
Date:   Mon, 9 Oct 2023 16:28:41 +0200
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Subject: Re: [PATCH 3/7] dt-bindings: media: Document STM32MP25 VENC video
 encoder
Content-Language: en-US
To:     Hugues FRUCHET <hugues.fruchet@foss.st.com>,
        Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Hans Verkuil <hverkuil@xs4all.nl>, linux-media@vger.kernel.org,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        Alexandre Torgue <alexandre.torgue@foss.st.com>,
        linux-stm32@st-md-mailman.stormreply.com,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-rockchip@lists.infradead.org
Cc:     Andrzej Pietrasiewicz <andrzej.p@collabora.com>
References: <20231004091552.3531659-1-hugues.fruchet@foss.st.com>
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 <6bc60e4a-ddf1-4125-ba27-53ab55a553d2@linaro.org>
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 <fa0e6187-ab7d-bc23-299c-a491c8ff1d8f@foss.st.com>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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On 09/10/2023 16:24, Hugues FRUCHET wrote:
> Hi Krzysztof,
> 
> On 10/9/23 15:56, Krzysztof Kozlowski wrote:
>> On 09/10/2023 15:49, Hugues FRUCHET wrote:
>>> Hi Krzysztof,
>>>
>>> On 10/5/23 21:45, Krzysztof Kozlowski wrote:
>>>> On 04/10/2023 11:15, Hugues Fruchet wrote:
>>>>> Add STM32MP25 VENC video encoder bindings.
>>>>>
>>>>
>>>> I don't understand why this binding is separate from video decoder.
>>>> Merge them.
>>> VDEC and VENC are two independent IPs with their own clock, reset,
>>> interrupt & register set, they have their own access to APB/AXI bus.
>>> Moreover future chipsets may embed only VENC or VDEC.
>>>
>>> Hoping that this clarifies the reason of two different bindings.
>>
>> No, it does not. These are no reasons to have independent bindings,
>> except when having actual impact on the bindings. The bindings look
>> identical. What are the differences?
> I'm sorry but I really don't understand your point, these are two 
> different IPs with very different registers in it, so why should
> I share that in a single binding ?

Because the binding is identical. If not, maybe I missed something, so
please point me to differences in the binding.

Best regards,
Krzysztof