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[98.183.112.25]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-724ecda3a22sm2696494a34.8.2025.01.27.17.32.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 27 Jan 2025 17:32:45 -0800 (PST) Message-ID: <95e9fc42-db0a-45fd-9155-9c8721c849d7@baylibre.com> Date: Mon, 27 Jan 2025 19:32:45 -0600 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 05/16] Documentation: ABI: add wideband filter type to sysfs-bus-iio To: Jonathan Santos , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: lars@metafoo.de, Michael.Hennerich@analog.com, marcelo.schmitt@analog.com, jic23@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, jonath4nns@gmail.com, marcelo.schmitt1@gmail.com References: <351b15550f8d8e7126ed8253f3a8028c708327f8.1737985435.git.Jonathan.Santos@analog.com> From: David Lechner Content-Language: en-US In-Reply-To: <351b15550f8d8e7126ed8253f3a8028c708327f8.1737985435.git.Jonathan.Santos@analog.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit 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 > --- > 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?