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Wire config parameter of TSC driver

SHU LIU
Intellectual 570 points

Hi,

  Does the TSC touchscreen driver drop the wire-config parameter ? 

  We would like to change the pinmux of 4 wire touchscreen (XP, XN, YP, YN) from

ti,wire-config = <0x00 0x11 0x22 0x33>;

to
ti,wire-config = <0x01 0x13 0x20 0x32>; 

It did not work for us. Is it still configurable? 

Regards,
Shu
  • 0
    TI__Guru*** 125430 points
    That configuration logic doesn't work. What you're trying to do here would not even be possible, i.e. there's a hardware limitation not a software limitation. AIN0 can only be driven high, so you can't hook XN to it. Similarly AIN3 can only be driven low, so you can't hook YP to it. The one and only configuration that should be used is XP, XN, YP, YN.