i.MX6 SABRE-SDP Enabling Multi-touch UI on a RGB24 Parallel interface display panel

ujalakumar — Sat, 11 May 2013 18:57:14 GMT

Dear All,

I am working on a i.MX6S based custom board which is actually a "toned-down" version of i.MX6DL SABRE-SD board. It has a multi-touch(5-point) Capacitive touch panel over a 24-bit , 800 x 480 , parallel LCD panel, interfaced on Disp0. Although the Touch panel seems to be working as we can see the touch points/traces on the display while a touch action is performed, but the inputs seems to be not taken by the Android UI and no action happens ...!!! even the unlock not happens even though touch point is on the unlock icon and sliding action is done.

We are using Android 13.4.1 BSP. The BSP release note states as below:

Feature i. MX 6Dual/6Quad SABRE-SD i. MX 6DualLite SABRE-SD

---------- ----------------------------------------- ------------------------------------

UI(Input) Multi-touch on LVDS Panel Multi-touch on LVDS Panel

The logcat of our board shows a message as:

"I/InputReader( 2253): Touch device 'cast-touch' could not query the properties of its associated display 0. The device will be inoperable until the display size becomes available."

appears to be some configuration issue for a Parallel display identification / enable/ ... on this i am completly clueless.. Any help , clue , guidance , suggestion on this is deeply appreciated and is eagerly awaited...

Pl. find here attached the complete "Logcat" of our hardware for analysis and suggestions,

my sinceremost thanks in advance...

Ujala Kumar

Original Attachment has been moved to: Logcat_11052013.log.zip

i.MX Processorsのトピックi.MX6 SABRE-SDP Enabling Multi-touch UI on a RGB24 Parallel interface display panel

i.MX6 SABRE-SDP Enabling Multi-touch UI on a RGB24 Parallel interface display panel