[PATCH 14/14] Documentation: ABI: testing: ad4080 docs
From: Antoniu Miclaus
Date: Thu Feb 20 2025 - 09:00:35 EST
Add documentation for the ad4080 attributes.
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx>
---
.../ABI/testing/sysfs-bus-iio-adc-ad4080 | 55 +++++++++++++++++++
1 file changed, 55 insertions(+)
create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-adc-ad4080
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-adc-ad4080 b/Documentation/ABI/testing/sysfs-bus-iio-adc-ad4080
new file mode 100644
index 000000000000..e37bfba0e989
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-adc-ad4080
@@ -0,0 +1,55 @@
+What: /sys/bus/iio/devices/iio:deviceX/lvds_sync
+Date: February 2025
+KernelVersion:
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ This attribute handles the data synchronization process.Because the CNV
+ signal is not taken into account by the FPGA when capturing the data, we
+ need a process that configures the ADC to output pattern data, writes the
+ SYNC bit in the axi_adc register map, waits until the custom HDL syncs the
+ data correctly, and then changes the output mode to analog data instead of
+ the fixed pattern.
+
+What: /sys/bus/iio/devices/iio:deviceX/lvds_lvds
+Date: February 2025
+KernelVersion:
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ Configures the signal type of the CNV signal. The value can be either CMOS
+ (lvds_cnv=0) or LVDS (lvds_cnv=1).
+
+What: /sys/bus/iio/devices/iio:deviceX/filter_sel
+Date: February 2025
+KernelVersion:
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ This attribute enables the digital filter functionality of the AD4080.In
+ order to capture data correctly, the function must configure the ADC
+ through SPI to select the filter type and enable data capture in filter
+ mode through axi_adc(In this mode, data is gated by a signal generated by
+ the AD4080 (GPIO1 and is not continuous as it is when the filter is
+ disabled).
+
+What: /sys/bus/iio/devices/iio:deviceX/filter_sel_available
+Date: February 2025
+KernelVersion:
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ Return the available filter modes that can be set.
+
+What: /sys/bus/iio/devices/iio:deviceX/sinc_dec_rate
+Date: February 2025
+KernelVersion:
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ Set the filter’s decimation rate.
+
+What: /sys/bus/iio/devices/iio:deviceX/sinc_dec_rate_available
+Date: February 2025
+KernelVersion:
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ Return the available filter's decimation rates.
+
+
+
--
2.48.1