PPS (Pulses Per Second) signal applies to most network controllers of Layerscape, including DPAA1 platforms.
PPS signal is output through 1588 timer pulse out pin. The QorIQ PTP driver configured fixed interval period pulse (FIPER) generator as PPS signal in default.
This document describes how to create dts file to customize configuration on the 1588 timer such as selecting other reference clock source, and configuring nominal clock period, FIPERs period, and output clock period to generate the required PPS signal.
