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From:   "Frank Wunderlich" <frank-w@public-files.de>
To:     "CK Hu" <ck.hu@mediatek.com>
Cc:     "Daniel Vetter" <daniel@ffwll.ch>,
        =?UTF-8?Q?=22Noralf_Tr=C3=B8nnes=22?= <noralf@tronnes.org>,
        "David Airlie" <airlied@linux.ie>,
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        "Philipp Zabel" <p.zabel@pengutronix.de>,
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Subject: Aw: Re: Re: [PATCH] drm/mediatek: Add MTK Framebuffer-Device
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Date:   Fri, 11 Jan 2019 19:23:42 +0100
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like Daniel guessed, fb-console does not work with this Patch.

i tried your Patch (additional patch for headerfile): https://github.com/frank-w/BPI-R2-4.14/commits/4.20-fbdev

and R2 hangs  (no crash and no further boot)

[    5.435075] mediatek-drm 14000000.dispsys: bound 14012000.rdma (ops mtk_disp)
[    5.435134] mediatek-drm 14000000.dispsys: bound 14014000.dpi (ops mtk_dpi_c)
[    5.459277] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).      
[    5.465863] [drm] No driver support for vblank timestamp query.              
[    5.472331] [drm] Initialized mediatek 1.0.0 20150513 for 14000000.dispsys o0

my monitor is switched on, but no output....we had added fbdev-driver to get FB-console over hdmi, so it's currently useless

regards Frank