On Fri, Dec 12, 2014 at 4:16 PM, Griffis, Brad <bgrif...@ti.com> wrote: > How are you configuring ti,charge-delay in your dts? I've seen this behavior > on some custom boards where we were using a smaller charge delay (0x400) to > begin with, and by upping it to 0xb000 we resolved the issue. These patches > however already specified ti,charge-delay = 0xb000 by default so this would > surprise me that it's still seeing that issue. Was the touchscreen working > as expected before these new patches, or does it have issues both ways?
It seems that because the ribbon cable has both the analog and digital signals, the analog signals are affected by the digital ones (hence the touchscreen was working OK when the display was disabled). Putting decoupling capacitors on X+, X-, Y+, Y- reduces the noise and the false events disappear. I'm sorry for all the noise I have generated. Best regards, -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
