the dp helper would try to enable the i2c channel for rockchip-edp

Tomeu Vizoso tomeu.vizoso at
Thu Oct 20 00:18:04 PDT 2016

On 19 October 2016 at 15:52, Randy Li < at> 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 at ff970000/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.

Good luck,


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