Re: [PATCH v3 4/4] Documentation: ABI: iio: add sinc4+lp
From: Marcelo Schmitt
Date: Sun Aug 10 2025 - 11:25:32 EST
On 08/08, Antoniu Miclaus wrote:
> Add new filter type to the sysfs-bus-iio ABI documentation:
> - "sinc4+lp" for Sinc4 + Low Pass Filter
>
> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx>
> ---
> changes in v3:
> - change from "sinc4+iir" to "sinc4+lp" for better generic naming
> - remove "dsp" filter type
> Documentation/ABI/testing/sysfs-bus-iio | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
> index 28f51e4cc367..caafdd88c601 100644
> --- a/Documentation/ABI/testing/sysfs-bus-iio
> +++ b/Documentation/ABI/testing/sysfs-bus-iio
> @@ -2309,6 +2309,7 @@ Description:
> * "sinc5+pf1" - Sinc5 + device specific Post Filter 1.
> * "wideband" - filter with wideband low ripple passband
> and sharp transition band.
> + * "sinc4+lp" - Sinc4 + Low Pass Filter.
>
Not entering the discussion about what would be a proper name for the filter but,
since we had a patch putting filter ABI doc in alphabetical order.
https://lore.kernel.org/linux-iio/20250710-iio-adc-ad7137-add-filter-support-v1-4-acffe401c4d2@xxxxxxxxxxxx/
I guess we keep the docs organized by adding "sinc4+lp" between "sinc4"
and "sinc4+sinc1" (if keeping that filter name of course).
> What: /sys/bus/iio/devices/iio:deviceX/filter_type
> What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_filter_type
> --
> 2.43.0
>
>