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

From: Randy Li
Date: Thu Oct 20 2016 - 03:39:04 EST




On 10/20/2016 03:18 PM, Tomeu Vizoso wrote:
On 19 October 2016 at 15:52, Randy Li <randy.li@xxxxxxxxxxxxxx> 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@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.

But I didn't know who register that I2C controller, as the system only have 6 I2C controller(0-5).
Good luck,

Tomeu



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--
Randy Li
The third produce department
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