···2929 ti,vref-delay-usecs vref supply delay in usecs, 0 for3030 external vref (u16).3131 ti,vref-mv The VREF voltage, in millivolts (u16).3232- Set to 0 to use internal refernce3232+ Set to 0 to use internal references3333 (ADS7846).3434 ti,keep-vref-on set to keep vref on for differential3535 measurements as well
···1515 - fsl,pen-debounce-ns: Pen debounce time in nanoseconds.1616 - fsl,pen-threshold: Pen-down threshold for the touchscreen. This is a value1717 between 1 and 4096. It is the ratio between the internal reference voltage1818- and the measured voltage after the plate was precharged. Resistence between1818+ and the measured voltage after the plate was precharged. Resistance between1919 plates and therefore the voltage decreases with pressure so that a smaller2020 value is equivalent to a higher pressure.2121 - fsl,settling-time-ns: Settling time in nanoseconds. The settling time is before