linux-kernel - Re: [PATCH v8 0/2] Change mmsys compatible for mt8195 mediatek-drm

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Message-ID: <490e5a70-885d-4214-c6b4-91ddd59db883@collabora.com>
Date:   Thu, 16 Mar 2023 10:03:35 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     "Jason-JH.Lin" <jason-jh.lin@...iatek.com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     Rex-BC Chen <rex-bc.chen@...iatek.com>,
        Singo Chang <singo.chang@...iatek.com>,
        Nancy Lin <nancy.lin@...iatek.com>,
        Nathan Lu <nathan.lu@...iatek.com>,
        dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v8 0/2] Change mmsys compatible for mt8195 mediatek-drm

Il 06/03/23 09:06, Jason-JH.Lin ha scritto:
> For previous MediaTek SoCs, such as MT8173, there are 2 display HW
> pipelines binding to 1 mmsys with the same power domain, the same
> clock driver and the same mediatek-drm driver.
> 
> For MT8195, VDOSYS0 and VDOSYS1 are 2 display HW pipelines binding to
> 2 different power domains, different clock drivers and different
> mediatek-drm drivers.
> 
> Moreover, Hardware pipeline of VDOSYS0 has these components: COLOR,
> CCORR, AAL, GAMMA, DITHER. They are related to the PQ (Picture Quality)
> and they makes VDOSYS0 supports PQ function while they are not
> including in VDOSYS1.
> 
> Hardware pipeline of VDOSYS1 has the component ETHDR (HDR related
> component). It makes VDOSYS1 supports the HDR function while it's not
> including in VDOSYS0.
> 
> To summarize0:
> Only VDOSYS0 can support PQ adjustment.
> Only VDOSYS1 can support HDR adjustment.
> 
> Therefore, we need to separate these two different mmsys hardwares to
> 2 different compatibles for MT8195.


Hello Chun-Kuang, Matthias,

Since this series is ready, can you please pick it?

I would imagine that commit [1/2] would go through CK and commit [2/2] goes
through Matthias.

Thanks,
Angelo