On Tue, 7 Dec 2021 13:40:19 +0100 Henk <yoda@xxxxxxxxxxxxx> wrote: > Hi, > > I derived the LTC6951 driver from an existing analog devices LTC6952 driver. > However for my situation this clock synthesis/buffer uses quite large > output frequencies (2.5GHz) which does not fit in the IIO_VAL_INT size > when retrieved with iio_info. > > I wonder if there is a way to represent such long integers within the > iio_framework. I believe currently there isn't right? > > Regards, > > Henk > Two options for this. If the thing we are controlling is the raw channel then we have the option to provide _scale reflecting the fact that a large value e.g. GHz is not normally controlled at a Hz granularity. Where that doesn't apply or the range is really very big we do have the slightly nasty option of IIO_VAL_INT_64 https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git/commit/?h=testing&id=6bb835f3d00467c9a5e35f4955afa29df96a404e This is very new, so not in mainline yet, though it is queued up for the next merge window and should be linux-next. Hope that helps, Jonathan
