[meta-freescale] imx6q: dual touch displays

[Prasant J]

On Thu, Dec 4, 2014 at 6:31 PM, Dominic Amann <dominic.amann at gmail.com> wrote:
> We would like to get HDMI working at the same time as LVDS. What did you do
> to achieve this? Is it device-tree AND uBoot options?
>
> On Thu, Dec 4, 2014 at 7:49 AM, Prasant J <pj0585 at gmail.com> wrote:
>>
>> Hi,
>>
>> I'm using custom hardware design based on imx6qsabresd. I have two
>> touch displays connected (HDMI + LVDS) and both are multi-touch. The
>> touch controller on both the displays are eGalax.
>>
>> My two applications take /dev/input/eventX as arguments to take events
>> from a particular touchscreen.
>>
>> My problem is that during boot up any one of the two touch controllers
>> may be configured first so it effects the links created in
>> /dev/input/eventX. The one which is configured first gets
>> /dev/input/event0 and the other gets /dev/input/event2.
>>
>> The USB Vendor ID for both controllers is: 0x0EEF , while the product
>> IDs are 0x7224 and 0xB100.
>>
>>
>> Any ideas on how can I guarantee or find out by means of a shell
>> script which touch controller is associated with a particular event
>> device file?
>>
>>
>> Any suggestions
>> --
>> _______________________________________________
>> meta-freescale mailing list
>> meta-freescale at yoctoproject.org
>> https://lists.yoctoproject.org/listinfo/meta-freescale
>
>
>
>
> --
>


I'm using Linux 3.10.17. My kernel arguments via uboot related to the
displays are:

video=mxcfb1:dev=hdmi,1920x1080M at 60,if=RGB24,bpp=32
video=mxcfb0:dev=ldb,LDB-DISPLAY,if=RGB24,bpp=32

The device tree may need tweaking, and it should be done.

Please make another post pointing out exactly where you are stuck. Let
this post be for touch related issue.


Regards, Pj