Date: Mon, 22 Aug 2022 10:04:29 -0700 From: Bakul Shah <bakul@iitbombay.org> To: freebsd-arm@freebsd.org Subject: gpio-pps on pi4 Message-ID: <675FC932-B61E-40DB-A446-BF55F8AB9DA3@iitbombay.org>
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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.=20 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/ove= rlays/pps-gpio-overlay.dts And is there a way to mmap the gpio address space? Thanks!
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