Capacitive touch not working Linux colibri-imx7-emmc

Technical Support
, , , ,
1

I have toradex board colibri-imx7 with LVDS display.
I connected all wires as specified, and loaded Latest Linux BSP provided with Toradex EasyInstaller.

After installation there was one issue of screen resolution , which I could fix by setting the right resolution by following command
fw_setenv vidargs video=‘mxsfb:800x480M-16@60,pixclockpol=1’
After this I also needed to enable capacitive Touch on screen, so i followed the Toradex blog to enable the touch driver.
which said following

"
Touch Screen
Starting with release 2.7b4 the touch controller driver is compiled as a module, and the device tree includes a device node for the touch controller. By default, the atmel_mxt_ts@4a node is in a disabled state. To enable it, change the status property from disabled to okay. Stop U-Boot and run the command below according to your module."

As my device was imx6ull so i followed following command to enable the touch

setenv fdt_fixup ‘fdt addr ${fdt_addr_r} && fdt set /soc/aips-bus@02100000/i2c@021a0000/atmel_mxt_ts@4a status okay’
After this command my board is unable to boot, I can get to prompt.

Any leads… ?
I am stuck up…Please help, I can manage with out touch for now, but I want my board to reset to factory settings…

Thanks

2

hi @maitreyi

Welcome to the Toradex Community!

Could you provide the version of the Hardware and Software of your module? Which carrier board are you using?

I have toradex board colibri-imx7 with LVDS display. I connected all wires as specified, and loaded Latest Linux BSP provided with Toradex EasyInstaller.

Could you provide a connection diagram and pictures of the connection?
Colibri iMX7 does not have a native LVDS interface. So how did you connect your LVDS Display to the module?

As my device was imx6ull so i followed following command to enable the touch

I thought your device is Colibri iMX7 and not Colibri iMX6ULL.

setenv fdt_fixup ‘fdt addr ${fdt_addr_r} && fdt set /soc/aips-bus@02100000/i2c@021a0000/atmel_mxt_ts@4a status okay’ After this command my board is unable to boot, I can get to prompt.

These Instructions are the Capacitive Touch Screen. I am not sure, if they will work for your Display. Could you provide a Datasheet of your Display?

Any leads… ? I am stuck up…Please help, I can manage with out touch for now, but I want my board to reset to factory settings…

You need to boot in U-Boot and then reset the Environment by applying the following commands:

  1. env default -a
  2. saveenv

Thanks.

You are welcome.

Best regards, Jaski