linux-kernel - Re: [PATCH 14/38] dt-bindings: media: mediatek,mt8195-jpeg: Allow range number in node address

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Message-ID: <72934f23-08eb-4214-a946-7aa7a432352e@collabora.com>
Date: Mon, 4 Aug 2025 11:02:44 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Krzysztof Kozlowski <krzk@...nel.org>,
 linux-mediatek@...ts.infradead.org, robh@...nel.org
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Subject: Re: [PATCH 14/38] dt-bindings: media: mediatek,mt8195-jpeg: Allow
 range number in node address

Il 24/07/25 11:14, Krzysztof Kozlowski ha scritto:
> On 24/07/2025 10:38, AngeloGioacchino Del Regno wrote:
>> The dual and triple core jpeg encoder and decoder (respectively)
>> on MT8195 are far apart: the only way to have this to make sense
>> is to split those in multiple address ranges in device trees as
>> one big range would overlap with other IP in at least the MT8195
>> SoC.
>>
>> Change both the jpegdec and jpegenc bindings to allow specifying
>> children nodes such as "jpegdec@0,10000", "jpegdec@1,0" or for
>> encoder "jpegenc@0,0", "jpegenc@1,0" to resolve dtbs_check issues.
> 
> 
> This should not be needed for standard MMIO/simple-bus nodes. I think
> DTS is wrong here.
> 
> Which cases really need the ','?
> 

All of the multi-core JPEG enc/decoders on MT8195 (and newer).

The DT changes are included in the same series as this commit; check:

20250724083914.61351-35-angelogioacchino.delregno@...labora.com

Cheers,
Angelo