We notice inconsistency in data received from touch controller.
- We get valid data for few cycle
- We get data read error for few touch input
- We get NAK for data read from touch after address cycle.
- We get ACK for the data but data read is FF all the time( here the I2C clock is held low for one or more cycle in between 8 bit read)
I have summarized all data in Touch panel I2C Issue.PPT and LA waveform capture(PNG Image).