linux-kernel - Re: [PATCH v1] drm/panel: simple: add SGD GKTW70SDAD1SD

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Date:   Sun, 10 Jan 2021 21:06:06 +0100
From:   Oliver Graute <oliver.graute@...il.com>
To:     Fabio Estevam <festevam@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Marco Felsch <m.felsch@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        DRI mailing list <dri-devel@...ts.freedesktop.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1] drm/panel: simple: add SGD GKTW70SDAD1SD

On 10/01/21, Fabio Estevam wrote:
> Hi Oliver,
> 
> On Sun, Jan 10, 2021 at 12:35 PM Oliver Graute <oliver.graute@...il.com> wrote:
> 
> > the first two errors are gone. But I still get this:
> >
> > [   42.387107] mxsfb 21c8000.lcdif: Cannot connect bridge: -517
> >
> > The panel is still off perhaps I miss something else.
> 
> Some suggestions:
> 
> - Take a look at arch/arm/boot/dts/imx6ul-14x14-evk.dtsi as a
> reference as it has display functional
> - Use imx_v6_v7_defconfig to make sure all the required drivers are selected

ok I checked imx6ul-14x14-evk.dtsi and use imx_v6_v7_defconfig

> - If it still does not work, share the dts and schematics

here the schematics and my dts. The board is using a LVDS connector for
the display.

https://www.variscite.de/wp-content/uploads/2017/12/VAR-6ULCustomboard-Schematics.pdf
https://lore.kernel.org/linux-arm-kernel/1610144511-19018-3-git-send-email-oliver.graute@gmail.com/

Thx for your help,

Best Regards,

Oliver