[PATCH v3 3/4] Documentation:ABI:testing:admv1014: add ABI docs

[Antoniu Miclaus <antoniu.miclaus@analog.com>]

Add documentation for the use of the Digital Attenuator gain.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
---
changes in v3:
 - add description for calibscale in I/Q mode
 .../testing/sysfs-bus-iio-frequency-admv1014  | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-frequency-admv1014

diff --git a/Documentation/ABI/testing/sysfs-bus-iio-frequency-admv1014 b/Documentation/ABI/testing/sysfs-bus-iio-frequency-admv1014
new file mode 100644
index 000000000000..77c1691e6910
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-frequency-admv1014
@@ -0,0 +1,29 @@
+What:		/sys/bus/iio/devices/iio:deviceX/in_altvoltage0_i_calibscale_coarse
+KernelVersion:
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Read/write value for the digital attenuator gain (IF_I) with coarse steps.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_altvoltage0_q_calibscale_coarse
+KernelVersion:
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Read/write value for the digital attenuator gain (IF_Q) with coarse steps.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_altvoltage0_i_calibscale_fine
+KernelVersion:
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Read/write value for the digital attenuator gain (IF_I) with fine steps.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_altvoltage0_q_calibscale_fine
+KernelVersion:
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Read/write value for the digital attenuator gain (IF_Q) with fine steps.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_altvoltage_calibscale
+KernelVersion:
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Read/write value for the digital attenuator gain (I/Q).
-- 
2.34.1