linux-kernel - Re: [PATCH v18 6/6] soc: mediatek: mutex: add functions that operate registers by CMDQ

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Message-ID: <e99b73e850780a104cf053e5e76bfd19256fc2a4.camel@mediatek.com>
Date:   Thu, 12 May 2022 18:32:58 +0800
From:   Rex-BC Chen <rex-bc.chen@...iatek.com>
To:     Moudy Ho <moudy.ho@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>
CC:     Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Rob Landley <rob@...dley.net>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        Alexandre Courbot <acourbot@...omium.org>,
        <tfiga@...omium.org>, <drinkcat@...omium.org>,
        <pihsun@...omium.org>, <hsinyi@...gle.com>,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        daoyuan huang <daoyuan.huang@...iatek.com>,
        Ping-Hsun Wu <ping-hsun.wu@...iatek.com>,
        <allen-kh.cheng@...iatek.com>, <xiandong.wang@...iatek.com>,
        <randy.wu@...iatek.com>, <jason-jh.lin@...iatek.com>,
        <roy-cw.yeh@...iatek.com>, <river.cheng@...iatek.com>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        <cellopoint.kai@...il.com>
Subject: Re: [PATCH v18 6/6] soc: mediatek: mutex: add functions that
 operate registers by CMDQ

On Thu, 2022-05-12 at 16:41 +0800, Moudy Ho wrote:
> Due to HW limitations, MDP3 is necessary to enable MUTEX in each
> frame
> for SOF triggering and cooperate with CMDQ control to reduce the
> amount
> of interrupts generated(also, reduce frame latency).
> 
> In response to the above situation, a new interface
> "mtk_mutex_enable_by_cmdq" has been added to achieve the purpose.
> 
> Signed-off-by: Moudy Ho <moudy.ho@...iatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@...labora.com>
> ---

Reviewed-by: Rex-BC Chen <rex-bc.chen@...iatek.com>