linux-kernel - Re: [PATCH v2 3/4] dt-bindings: media: mediatek-jpeg-encoder: add MT8189 compatible string

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251227-glittering-opalescent-caterpillar-3c24d8@quoll>
Date: Sat, 27 Dec 2025 13:32:57 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Jianhua Lin <jianhua.lin@...iatek.com>
Cc: mchehab@...nel.org, robh@...nel.org, krzk+dt@...nel.org, 
	conor+dt@...nel.org, matthias.bgg@...il.com, angelogioacchino.delregno@...labora.com, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-media@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, 
	Project_Global_Chrome_Upstream_Group@...iatek.com, sirius.wang@...iatek.com, vince-wl.liu@...iatek.com, 
	jh.hsu@...iatek.com
Subject: Re: [PATCH v2 3/4] dt-bindings: media: mediatek-jpeg-encoder: add
 MT8189 compatible string

On Wed, Dec 24, 2025 at 11:17:20AM +0800, Jianhua Lin wrote:
> Compared to the previous generation IC, the MT8189 uses 34-bit iova
> address-space (16GB)  and requires a single clock configuration.
> Therefore, add "mediatek,mt8189-jpgenc" compatible to the binding document.
> Additionally, it corrects the inheritance for MT8188, aligning it

Two different issues. Don't mix them up. See submitting patches.

> with MT8189 due to their shared architecture and 34-bit iova address
> space (16GB) requirements.
> Previously, MT8188 was incorrectly defined alongside SoCs with 32-bit
> iova address-space (4GB), such as "mediatek,mtk-jpgenc". This mismatch
> results in an ABI break, as MT8188 cannot function correctly under
> the 32-bit iova address-space (4GB) configuration.
> 
> Key changes include:

How is this related to above?
> - Introducing "mediatek,mt8189-jpgenc" as a new compatible string to
>   represent the correct architecture.

Why are you repeating the same?

> - Updating MT8188 to inherit from MT8189, ensuring proper support for
>   34-bit iova address-space (16GB).
> - Add property "mediatek,larb" for MT8189 requirements.
> - Improved formatting for better readability and consistency.
> 
> These changes ensure that both MT8188 and MT8189 are correctly supported
> with the necessary 34-bit iova address-space (16GB), while maintaining
> compatibility with their shared architecture.

This is not a contest who writes the longest commit msg by repeating
obvious things.

> 
> Extensive internal review and testing have been conducted to validate
> these changes and ensure compliance with DT binding standards.

Really, no.

Best regards,
Krzysztof