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Subject[PATCH v3 5/7] staging: iio: ad5933: add ABI documentation
Add an ABI documentation for the ad5933 driver.

Signed-off-by: Marcelo Schmitt <>
.../ABI/testing/sysfs-bus-iio-ad5933 | 39 +++++++++++++++++++
1 file changed, 39 insertions(+)
create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-ad5933

diff --git a/Documentation/ABI/testing/sysfs-bus-iio-ad5933 b/Documentation/ABI/testing/sysfs-bus-iio-ad5933
new file mode 100644
index 000000000000..8a60dd178b1f
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-ad5933
@@ -0,0 +1,39 @@
+Date: March 2019
+KernelVersion: Kernel 4.19
+ The start frequency. Set this to define the frequency point at
+ which the device should start the next frequency sweep.
+Date: March 2019
+KernelVersion: Kernel 4.19
+ The frequency sweep increment. Set this to define the amount by
+ which the frequency is incremented after each scan point. After
+ the measurement at a frequency point is completed, the next
+ measurement will be made at a frequency point
+ 'frequency increment'Hz higher than the previous one unless a
+ repeat frequency command is issued. This behavior will follow
+ until the defined number of frequency points have been measured
+ or frequency sweep is somewhat reset.
+Date: March 2019
+KernelVersion: Kernel 4.19
+ The number of increments. This defines the number of frequency
+ points in the frequency sweep.
+Date: March 2019
+KernelVersion: Kernel 4.19
+ Number of settling time cycles. This sets the delay between a
+ start frequency sweep/increment frequency /repeat frequency to
+ be proportional to the excitation signal frequency times the
+ number of settling time cycles.
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