[PATCH v5 1/5] Documentation: ABI: IIO: add calibconv_delay documentation

Angelo Dureghello
2025-05-19T10:15:33Z

Add new IIO calibconv_delay documentation.

The ad7606 implements a phase calibation feature, in nanoseconds.
Being this a time delay, using the conv_delay suffix.

Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
---
Documentation/ABI/testing/sysfs-bus-iio | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 190bfcc1e836b69622692d7c056c0092e00f1a9b..4cf482eca3d8a0a80b051fbb496f82f836ab76f8 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -559,6 +559,30 @@ Description:
- a small discrete set of values like "0 2 4 6 8"
- a range specified as "[min step max]"

+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_convdelay
+KernelVersion: 6.16
+Contact: linux-iio@vger.kernel.org
+Description:
+ Delay of start of conversion from common reference point shared
+ by all channels. Can be writable when used to compensate for
+ delay variation introduced by external filters feeding a
+ simultaneous sampling ADC.
+
+ I.e., for the ad7606 ADC series, this value is intended as a
+ configurable time delay in seconds, to correct delay introduced
+ by an optional external filtering circuit.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_convdelay_available
+KernelVersion: 6.16
+Contact: linux-iio@vger.kernel.org
+Description:
+ Available values of convdelay. Maybe expressed as:
+
+ - a range specified as "[min step max]"
+
+ If shared across all channels, <type>_calibconv_delay_available
+ is used.
+
What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale

--
2.49.0