On Sat, Jun 26, 2021 at 1:48 AM Dipen Patel <dipenp@xxxxxxxxxx> wrote: Just a quick question about this: > + GPIO_V2_LINE_FLAG_EVENT_CLOCK_HARDWARE | \ Is the usage intended to be such that since hardware timestamp can not be guaranteed we need to ask for it and fail and if that fails maybe the software wants to fall back to the realtime or common timestamp? I'm thinking from the view of libgpiod or similar apps that abstract this and they will be "I want to use hardware timestamps if and only if it is available, otherwise I want to use this other timestamp" or is that use case uncommon, such that either you know exactly what you want or you should not be messing with hardware timestamps? Yours, Linus Walleij