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Subject: Re: [PATCH v1 06/14] media: platform: mtk-mdp3: Modify mtk-img-ipi.h
 for MT8195 SCP
To:     "roy-cw.yeh" <roy-cw.yeh@mediatek.com>,
        Rob Herring <robh+dt@kernel.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc:     Mauro Carvalho Chehab <mchehab@kernel.org>,
        Fabien Parent <fparent@baylibre.com>,
        "jason-jh . lin" <jason-jh.lin@mediatek.com>,
        daoyuan huang <daoyuan.huang@mediatek.com>,
        Ping-Hsun Wu <ping-hsun.wu@mediatek.com>,
        Moudy Ho <moudy.ho@mediatek.com>,
        "river . cheng" <river.cheng@mediatek.com>,
        Yongqiang Niu <yongqiang.niu@mediatek.com>,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org
References: <20220117055254.9777-1-roy-cw.yeh@mediatek.com>
 <20220117055254.9777-7-roy-cw.yeh@mediatek.com>
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>
Message-ID: <f6bbe7ff-1487-0ed1-595d-2449d57098ca@collabora.com>
Date:   Thu, 27 Jan 2022 16:02:44 +0100
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Il 17/01/22 06:52, roy-cw.yeh ha scritto:
> From: "Roy-CW.Yeh" <roy-cw.yeh@mediatek.com>
> 
> 1. Modify struct member to 4 byte-alignment for MT8195 SCP limitation
> 2. Add new struct for hw engine adding in MT8195
> 
> Signed-off-by: Roy-CW.Yeh <roy-cw.yeh@mediatek.com>

This will break MT8183; is there any new firmware for that SoC that will
synchronize these structures?

Alternatively, you should add a new version of these structures and select
them with a wrapper function on a per-SoC basis, or per firmware version.