linux-kernel - Aw: Re: Re: [PATCH] drm/mediatek: Add MTK Framebuffer-Device (mt7623)

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Date:   Fri, 11 Jan 2019 19:23:42 +0100
From:   "Frank Wunderlich" <frank-w@...lic-files.de>
To:     "CK Hu" <ck.hu@...iatek.com>
Cc:     "Daniel Vetter" <daniel@...ll.ch>,
        "Noralf Trønnes" <noralf@...nnes.org>,
        "David Airlie" <airlied@...ux.ie>,
        "Alexander Ryabchenko" <d3adme4t@...il.com>,
        "Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        "Matthias Brugger" <matthias.bgg@...il.com>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        "Philipp Zabel" <p.zabel@...gutronix.de>,
        "Linux ARM" <linux-arm-kernel@...ts.infradead.org>
Subject: Aw: Re: Re: [PATCH] drm/mediatek: Add MTK Framebuffer-Device
 (mt7623)

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