* the dp helper would try to enable the i2c channel for rockchip-edp
@ 2016-10-19 13:52 Randy Li
2016-10-20 7:18 ` Tomeu Vizoso
0 siblings, 1 reply; 4+ messages in thread
From: Randy Li @ 2016-10-19 13:52 UTC (permalink / raw)
To: dri-devel
Cc: airlied, linux-kernel, seanpaul, inki.dae, daniel.vetter,
architt, tomeu.vizoso, gustavo.padovan, ville.syrjala,
linux-rockchip
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.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: the dp helper would try to enable the i2c channel for rockchip-edp
2016-10-19 13:52 the dp helper would try to enable the i2c channel for rockchip-edp Randy Li
@ 2016-10-20 7:18 ` Tomeu Vizoso
2016-10-20 7:38 ` Randy Li
0 siblings, 1 reply; 4+ messages in thread
From: Tomeu Vizoso @ 2016-10-20 7:18 UTC (permalink / raw)
To: Randy Li
Cc: dri-devel, Daniel Vetter, linux-kernel,
open list:ARM/Rockchip SoC...,
Gustavo Padovan
On 19 October 2016 at 15:52, Randy Li <randy.li@rock-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@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,
Tomeu
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: the dp helper would try to enable the i2c channel for rockchip-edp
2016-10-20 7:18 ` Tomeu Vizoso
@ 2016-10-20 7:38 ` Randy Li
2016-10-20 8:02 ` Tomeu Vizoso
0 siblings, 1 reply; 4+ messages in thread
From: Randy Li @ 2016-10-20 7:38 UTC (permalink / raw)
To: Tomeu Vizoso
Cc: dri-devel, Daniel Vetter, linux-kernel,
open list:ARM/Rockchip SoC...,
Gustavo Padovan
On 10/20/2016 03:18 PM, Tomeu Vizoso wrote:
> On 19 October 2016 at 15:52, Randy Li <randy.li@rock-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@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
>
>
>>
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel
>
--
Randy Li
The third produce department
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: the dp helper would try to enable the i2c channel for rockchip-edp
2016-10-20 7:38 ` Randy Li
@ 2016-10-20 8:02 ` Tomeu Vizoso
0 siblings, 0 replies; 4+ messages in thread
From: Tomeu Vizoso @ 2016-10-20 8:02 UTC (permalink / raw)
To: Randy Li
Cc: dri-devel, Daniel Vetter, linux-kernel,
open list:ARM/Rockchip SoC...,
Gustavo Padovan
On 20 October 2016 at 09:38, Randy Li <randy.li@rock-chips.com> wrote:
>
>
> On 10/20/2016 03:18 PM, Tomeu Vizoso wrote:
>>
>> On 19 October 2016 at 15:52, Randy Li <randy.li@rock-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@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).
Ah, now I remember that the warning is spurious, have just sent a
patch to avoid it with you on Cc ("ARM: dts: rockchip: add i2c-bus
subnode to edp").
Could you please test it out?
Regarding why a 7th I2C adapter is being registered, that's the one
used by the eDP controller, and the code registering it is DRM core
when the analogix driver calls drm_dp_aux_register.
Regarding your problem with DRM not loading properly, you would need
to attach more content from dmesg as the lines you attached doesn't
seem related to it. You can get more debug logs from DRM by booting
with this kernel parameter:
drm.debug=0x1f
Regards,
Tomeu
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-10-20 8:02 UTC | newest]
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2016-10-19 13:52 the dp helper would try to enable the i2c channel for rockchip-edp Randy Li
2016-10-20 7:18 ` Tomeu Vizoso
2016-10-20 7:38 ` Randy Li
2016-10-20 8:02 ` Tomeu Vizoso
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