Hello, I was looking for some work on staging: iio: ad9832 and made some observations while reading the driver. Apparently it had no devicetree documentation so I tried to elaborate one. It uses a platform_data variable to load external clock frequency (I tried to make it use linux's clock framework). Some device attributes don't seem to be standardized on Documentation/ABI/testing/sysfs-bus-iio and there's no specific ABI for ad9832 nearby nor at staging/iio/Documentation. So maybe those missing ABI could be documented. The device has to set some internal registers to operate correctly, AD9832_FREQXHM and AD9832_PHASEXH, would it be feasible to set iio chanels for this? I couldn't understand why checkpatch.pl gave errors on IIO_DEV_ATTR_* macros. To me they seem to have no problem. Also it has that platform_data to be moved to include/linux/iio. Is there any special reason for it not being there already? Which are the criterions a platform_data need to satisfy to be put there? I'm sending a patchset with some things I've already done. Is there something else that could be done in this device driver? Please, tell if I've forgotten something. Any advice is welcome. Thanks, Marcelo
