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

Open Source and information security mailing list archives

Date:   Fri, 15 Jan 2021 15:31:00 +0100
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Oliver Graute <oliver.graute@...il.com>,
        Fabio Estevam <festevam@...il.com>
Cc:     David Airlie <airlied@...ux.ie>,
        Marco Felsch <m.felsch@...gutronix.de>,
        DRI mailing list <dri-devel@...ts.freedesktop.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>
Subject: Re: [PATCH v1] drm/panel: simple: add SGD GKTW70SDAD1SD

Hi,


On 10/01/2021 21:06, Oliver Graute wrote:
> 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/

The DT6CustomBoard uses almost the same screen (sgd,gktw70sdae4se), it's supported and tested in kernelci, you can find the dt in arch/arm/boot/dts/imx6q-var-dt6customboard.dts

Neil

> 
> Thx for your help,
> 
> Best Regards,
> 
> Oliver
> _______________________________________________
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> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
>

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