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linux-yocto/Documentation/ABI/testing/sysfs-bus-iio-adc-ad-sigma-delta
Guillaume Ranquet 4d112ebd02 iio: adc: ad-sigma-delta: Document ABI for sigma delta adc 
Add common calibration nodes for sigma delta adc.

Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Link: https://patch.msgid.link/20241202-ad411x_calibration-v3-2-beb6aeec39e2@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-12-11 19:20:49 +00:00

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What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_sys_calibration KernelVersion: 5.5 Contact: linux-iio@vger.kernel.org Description: This attribute, if available, initiates the system calibration procedure. This is done on a single channel at a time. Write '1' to start the calibration.

What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_sys_calibration_mode_available KernelVersion: 5.5 Contact: linux-iio@vger.kernel.org Description: This attribute, if available, returns a list with the possible calibration modes. There are two available options: "zero_scale" - calibrate to zero scale "full_scale" - calibrate to full scale

What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_sys_calibration_mode KernelVersion: 5.5 Contact: linux-iio@vger.kernel.org Description: This attribute, if available, sets up the calibration mode used in the system calibration procedure. Reading returns the current calibration mode. Writing sets the system calibration mode.