linux-kernel - [PATCH v6 10/10] Documetation: ABI: add sinc1 and sinc5+pf1 filter

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Message-ID: <20250516082630.8236-11-antoniu.miclaus@analog.com>
Date: Fri, 16 May 2025 11:26:30 +0300
From: Antoniu Miclaus <antoniu.miclaus@...log.com>
To: <jic23@...nel.org>, <robh@...nel.org>, <conor+dt@...nel.org>,
        <linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC: Antoniu Miclaus <antoniu.miclaus@...log.com>
Subject: [PATCH v6 10/10] Documetation: ABI: add sinc1 and sinc5+pf1 filter

Add sinc1 and sinc5+pf1 filter types used for ad4080 device.

Include these two options into the filter_type available attribute.

Add also the option for filter disabled.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>
---
changes in v6:
 - add doc for filter "none".
 Documentation/ABI/testing/sysfs-bus-iio | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index b8838cb92d38..c67b63653441 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -2275,6 +2275,9 @@ Description:
 		Reading returns a list with the possible filter modes. Options
 		for the attribute:
 
+		* "none" - Filter is disabled/bypassed.
+		* "sinc1" - The digital sinc1 filter. Fast 1st
+		  conversion time. Poor noise performance.
 		* "sinc3" - The digital sinc3 filter. Moderate 1st
 		  conversion time. Good noise performance.
 		* "sinc4" - Sinc 4. Excellent noise performance. Long
@@ -2290,6 +2293,7 @@ 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.
+		* "sinc5+pf1" - Sinc5 + device specific Post Filter 1.
 
 What:		/sys/bus/iio/devices/iio:deviceX/filter_type
 What:		/sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_filter_type
-- 
2.49.0