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Date:   Sun, 02 Aug 2020 06:42:42 +0200
From:   Frank Wunderlich <>
        Chun-Kuang Hu <>
CC:     Philipp Zabel <>,
        chunhui dai <>,
        David Airlie <>,
        linux-kernel <>,
        DRI Development <>,
        "moderated list:ARM/Mediatek SoC support" 
        Daniel Vetter <>,
        Matthias Brugger <>,
        Linux ARM <>
Subject: Re: [PATCH v2 2/5] drm/mediatek: fix boot up for 720 and 480 but 1080


Am 2. August 2020 02:08:44 MESZ schrieb Chun-Kuang Hu <>:
>Hi, Frank:
>> - disable tmds on phy on mt2701
>> - support other resolutions like 1280x1024
>If this patch does two things, it should be broken into two patches.
As far as i see,it only disable tmds and so fix specific resolutions like the the one below.some other (like 1080p) does not have this Problem.

> I think every pll is default off, so you should turn on pll rather
> than disable tmds

Is disabling tmds wrong here? Which pll is needed here? What does tmds? I got only the Patches for testing....

>> without this Patch i see flickering on my TFT (1280x1024),
>> so i guess clock is wrong.

regards Frank

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