[PATCH v4] imx-drm: Add mx6 hdmi transmitter support

Fabio Estevam festevam at gmail.com
Thu Oct 31 16:45:41 EDT 2013


Hi Troy,

On Thu, Oct 31, 2013 at 6:38 PM, Troy Kisky
<troy.kisky at boundarydevices.com> wrote:

>> I get a magenta line down the left side of the screen unless I replace the
>> 5 with a 6.
>> ie.
>>
>> +    for (count = 0; count < 6; count++)
>> +        hdmi_writeb(hdmi, val, HDMI_FC_INVIDCONF);
>>
>>
>> This is with a imx6q processor. With the 6, the picture looks great!
>>
>> Troy
>>
>
> It also works if I change the 5 to a 4! A 3 fails though.
> To summarize:
> 0 works
> 1 fails
> 2 works
> 3 fails
> 4 works
> 5 fails
> 6 works
> Very strange.

Interesting. With the monitor I have tested I am not able to see this
magenta line.

As the erratum says to write 3 or 4 times to the register, then I will
use 4 as per your results.

Regards,

Fabio Estevam



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