linux-kernel - Re: the dp helper would try to enable the i2c channel for rockchip-edp

Open Source and information security mailing list archives

Date:   Thu, 20 Oct 2016 15:38:29 +0800
From:   Randy Li <randy.li@...k-chips.com>
To:     Tomeu Vizoso <tomeu.vizoso@...labora.com>
Cc:     "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
        Gustavo Padovan <gustavo.padovan@...labora.co.uk>
Subject: Re: the dp helper would try to enable the i2c channel for
 rockchip-edp


On 10/20/2016 03:18 PM, Tomeu Vizoso wrote:
> On 19 October 2016 at 15:52, Randy Li <randy.li@...k-chips.com> wrote:
>> Hello,
>>
>>   Recently, I want to use a eDP panel in my RK3288 platform, but I got the
>> following message:
>>
>> [    8.935918] i2c i2c-6: of_i2c: modalias failure on /dp@...70000/ports
>> [    8.936018] rockchip-drm display-subsystem: bound ff970000.dp (ops
>> rockchip_dp_component_ops [analogix_dp_rockchip])
>> It try to enable the eDP aux channel and add a new I2C controller, but it
>> failed then the whole display subsystem is broken, the panel doesn't power
>> on either.
>>
>>   I hope somebody could figure out what is wrong with it.
>
> Hi Randy,
>
> you want to debug why the call to of_modalias_node fails.
>
But I didn't know who register that I2C controller, as the system only 
have 6 I2C controller(0-5).
> Good luck,
>
> Tomeu
>
>
>>
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel@...ts.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel
>

-- 
Randy Li
The third produce department
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