linux-kernel - Re: [PATCH v6 05/12] Documentation: ABI: IIO: Add sinc5+avg to the filter_type

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Message-ID: <20250622150934.09151aae@jic23-huawei>
Date: Sun, 22 Jun 2025 15:09:34 +0100
From: Jonathan Cameron <jic23@...nel.org>
To: Marcelo Schmitt <marcelo.schmitt@...log.com>
Cc: <linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
 <linux-gpio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
 <lars@...afoo.de>, <Michael.Hennerich@...log.com>, <dlechner@...libre.com>,
 <nuno.sa@...log.com>, <andy@...nel.org>, <robh@...nel.org>,
 <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <linus.walleij@...aro.org>,
 <brgl@...ev.pl>, <broonie@...nel.org>, <lgirdwood@...il.com>,
 <marcelo.schmitt1@...il.com>
Subject: Re: [PATCH v6 05/12] Documentation: ABI: IIO: Add sinc5+avg to the
 filter_type_available list

On Wed, 18 Jun 2025 14:36:51 -0300
Marcelo Schmitt <marcelo.schmitt@...log.com> wrote:

> Add the sinc5+avg filter type to the list of possible values for the
> filter_type_available attribute.
> 
> The sinc5+avg filter type is handled by the ad4170 driver.
> 
> Signed-off-by: Marcelo Schmitt <marcelo.schmitt@...log.com>
> ---
> New patch in v6.
> 
>  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 3bc386995fb6..c1f657182ad8 100644
> --- a/Documentation/ABI/testing/sysfs-bus-iio
> +++ b/Documentation/ABI/testing/sysfs-bus-iio
> @@ -2321,6 +2321,7 @@ Description:
>  		* "sinc3+pf3" - Sinc3 + device specific Post Filter 3.
>  		* "sinc3+pf4" - Sinc3 + device specific Post Filter 4.
>  		* "sinc5+pf1" - Sinc5 + device specific Post Filter 1.
> +		* "sinc5+avg" - Sinc3 + averaging by 4.

Seems an unlikely description that something called sinc5 is in fact sinc3

>  		* "wideband" - filter with wideband low ripple passband
>  		  and sharp transition band.
>