From: Rodrigo Alencar <[email protected]> Add custom ABI documentation file for the DDS AD9910 with sysfs entries to control Parallel Port, Digital Ramp Generator and OSK parameters.
Signed-off-by: Rodrigo Alencar <[email protected]> --- .../ABI/testing/sysfs-bus-iio-frequency-ad9910 | 73 ++++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 74 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-iio-frequency-ad9910 b/Documentation/ABI/testing/sysfs-bus-iio-frequency-ad9910 new file mode 100644 index 000000000000..eb0ff96a6e10 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-iio-frequency-ad9910 @@ -0,0 +1,73 @@ +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_offset +KernelVersion: +Contact: [email protected] +Description: + For a channel that allows frequency control through buffers, this + represents the base frequency value in Hz. The actual output frequency + is a result with the sum of this value. + +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_scale +KernelVersion: +Contact: [email protected] +Description: + For a channel that allows frequency control through buffers, this + represents the frequency modulation gain. This value multiplies the + buffer input sample value before it is added to a frequency offset. + +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase_offset +KernelVersion: +Contact: [email protected] +Description: + For a channel that allows phase control through buffers, this + represents the base phase value in radians. The actual output phase + is a result with the sum of this value. + +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale_offset +KernelVersion: +Contact: [email protected] +Description: + For a channel that allows amplitude control through buffers, this + represents the value for a base amplitude scale. The actual output + amplitude scale is a result with the sum of this value. + +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_dwell_en +KernelVersion: +Contact: [email protected] +Description: + For a channel that produces parametric sweeps, this attribute controls + the sweep behavior at the configured limits. It enables dwell mode at a + sweep limit when set to 1. Otherwise, the sweep may stop at the initial + position or restart from that initial position or continue by reversing + its direction. + +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_roc +KernelVersion: +Contact: [email protected] +Description: + Frequency rate of change in Hz/s for channels that produce linear + frequency sweeps. This value may be influenced by the channel's + sampling_frequency setting. + +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase_roc +KernelVersion: +Contact: [email protected] +Description: + Phase rate of change in rad/s for channels that produce linear + phase sweeps. This value may be influenced by the channel's + sampling_frequency setting. + +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale_roc +KernelVersion: +Contact: [email protected] +Description: + Amplitude scale rate of change in 1/s for channels that ramp + amplitude. This value may be influenced by the channel's + sampling_frequency setting. + +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale_roc_available +KernelVersion: +Contact: [email protected] +Description: + Lists the available scale_roc values for the channel based on + the current sampling_frequency. Values are space-separated in + ascending order. diff --git a/MAINTAINERS b/MAINTAINERS index 6a53b202a84d..b52c0aae96b7 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1643,6 +1643,7 @@ M: Rodrigo Alencar <[email protected]> L: [email protected] S: Supported W: https://ez.analog.com/linux-software-drivers +F: Documentation/ABI/testing/sysfs-bus-iio-frequency-ad9910 F: Documentation/devicetree/bindings/iio/frequency/adi,ad9910.yaml F: drivers/iio/frequency/ad9910.c -- 2.43.0
