Re: [PATCH v2 05/16] Documentation: ABI: add wideband filter type to sysfs-bus-iio

[David Lechner]

On 1/27/25 9:12 AM, Jonathan Santos wrote:
> The Wideband Low Ripple filter is used for AD7768-1 Driver.
> Document wideband filter option into filter_type_available
> attribute.
> 
> Signed-off-by: Jonathan Santos <Jonathan.Santos@xxxxxxxxxx>
> ---
> v2 Changes:
> * Removed FIR mentions.
> ---
>  Documentation/ABI/testing/sysfs-bus-iio | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
> index f83bd6829285..9b879e7732cd 100644
> --- a/Documentation/ABI/testing/sysfs-bus-iio
> +++ b/Documentation/ABI/testing/sysfs-bus-iio
> @@ -2291,6 +2291,8 @@ Description:
>  		* "sinc3+pf2" - Sinc3 + device specific Post Filter 2.
>  		* "sinc3+pf3" - Sinc3 + device specific Post Filter 3.
>  		* "sinc3+pf4" - Sinc3 + device specific Post Filter 4.
> +		* "wideband" - filter with wideband low ripple passband
> +		  and sharp transition band.
>  
>  What:		/sys/.../events/in_proximity_thresh_either_runningperiod
>  KernelVersion:	6.6

I'm a bit shy to make any more suggestions on this one since my previous
suggestions were clearly not the "right way". :-)

But, the key takeaway I got from the discussion on v1 is that this describes the
_shape_ of the filter. To me, "wideband" describes the size but not the shape.
Would rectangular be the correct shape?