I am a noooob for learning TX2. I want to reuse gpio388 in J21 GPIO as PPS input in my tx2. However, after following the tutorial in this forum, I still cannot create a GPIO port to receive PPS. I have opened the PPS service when building the kernel.
I am curious about how and where to add the following statements in …/hardware/nvidia/.
gpio=<&tegra_main_gpio TEGRA_MAIN_GPIO(I,4) 0>;
compatible = “pps-gpio”;
Please help me to figure out this problem which has been confused me for a long time.
Thanks a lot.