gpio-pps on pi4
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Date: Mon, 22 Aug 2022 17:04:29 UTC
Are there instructions on how to use gpio-pps on a pi4? Or a working gpio-pps.dtbo file I can use? Ideally without having to recompile anything. Instructions in /sys/contrib/device-tree/Bindings/pps/pps-gpio.txt are not clear to me. I suppose I can try to create one using the following as a template and fix things up.... https://github.com/raspberrypi/linux/blob/rpi-5.10.y/arch/arm/boot/dts/overlays/pps-gpio-overlay.dts And is there a way to mmap the gpio address space? Thanks!