linux-kernel - Re: [v1,1/2] drm/mediatek: Fixup external display black screen issue

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Message-ID: <CAJMQK-jGTAm7YS3ov3ok0SkrH7dWEL4umC21O6RSchrfDs5omw@mail.gmail.com>
Date:   Thu, 5 Dec 2019 16:44:01 +0800
From:   Hsin-Yi Wang <hsinyi@...omium.org>
To:     Yongqiang Niu <yongqiang.niu@...iatek.com>
Cc:     Mark Rutland <mark.rutland@....com>,
        Devicetree List <devicetree@...r.kernel.org>,
        David Airlie <airlied@...ux.ie>,
        lkml <linux-kernel@...r.kernel.org>,
        dri-devel@...ts.freedesktop.org,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        linux-mediatek@...ts.infradead.org,
        Philipp Zabel <p.zabel@...gutronix.de>,
        CK Hu <ck.hu@...iatek.com>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [v1,1/2] drm/mediatek: Fixup external display black screen issue

On Thu, Dec 5, 2019 at 3:13 PM Yongqiang Niu <yongqiang.niu@...iatek.com> wrote:
>
> please double confirm is this dump stack log is ruining on MT8173 real
> IC or not.
> if yes, that may caused ovl hang when disable layer not in blanking,
> then cause vblank time out.
> i will disable overlay with cmdq in next version.
>
It is running on MT8173 acer chromebook. Error only happens when
turning off display.
>