52302f87d0
Define the sysfs interface for toggle or dither capable channels. Dither capable channels will have the extended interface: * out_voltageY_dither_en * out_voltageY_dither_raw * out_voltageY_dither_offset * out_voltageY_dither_raw_available * out_voltageY_dither_frequency * out_voltageY_dither_frequency_available * out_voltageY_dither_phase * out_voltageY_dither_phase_available Toggle enabled channels will have: * out_voltageY_toggle_en * out_voltageY_raw0 * out_voltageY_raw1 * out_voltageY_symbol The common interface present in all channels is: * out_voltageY_raw (not present in toggle enabled channels) * out_voltageY_raw_available * out_voltageY_powerdown * out_voltageY_scale * out_voltageY_offset * out_voltageY_calibbias * out_voltageY_calibscale Signed-off-by: Nuno Sá <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20220225130129.69-3-nuno.sa@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
87 lines
3.0 KiB
Plaintext
87 lines
3.0 KiB
Plaintext
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_en
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KernelVersion: 5.18
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Contact: linux-iio@vger.kernel.org
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Description:
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Dither enable. Write 1 to enable dither or 0 to disable it. This is useful
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for changing the dither parameters. They way it should be done is:
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- disable dither operation;
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- change dither parameters (eg: frequency, phase...);
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- enabled dither operation
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What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_raw
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KernelVersion: 5.18
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Contact: linux-iio@vger.kernel.org
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Description:
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This raw, unscaled value refers to the dither signal amplitude.
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The same scale as in out_voltageY_raw applies. However, the
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offset might be different as it's always 0 for this attribute.
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What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_raw_available
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KernelVersion: 5.18
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Contact: linux-iio@vger.kernel.org
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Description:
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Available range for dither raw amplitude values.
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What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_offset
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KernelVersion: 5.18
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Contact: linux-iio@vger.kernel.org
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Description:
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Offset applied to out_voltageY_dither_raw. Read only attribute
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always set to 0.
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What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_frequency
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KernelVersion: 5.18
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Contact: linux-iio@vger.kernel.org
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Description:
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Sets the dither signal frequency. Units are in Hz.
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What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_frequency_available
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KernelVersion: 5.18
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Contact: linux-iio@vger.kernel.org
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Description:
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Returns the available values for the dither frequency.
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What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_phase
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KernelVersion: 5.18
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Contact: linux-iio@vger.kernel.org
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Description:
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Sets the dither signal phase. Units are in Radians.
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What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_dither_phase_available
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KernelVersion: 5.18
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Contact: linux-iio@vger.kernel.org
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Description:
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Returns the available values for the dither phase.
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What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_toggle_en
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KernelVersion: 5.18
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Contact: linux-iio@vger.kernel.org
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Description:
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Toggle enable. Write 1 to enable toggle or 0 to disable it. This is
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useful when one wants to change the DAC output codes. The way it should
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be done is:
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- disable toggle operation;
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- change out_voltageY_raw0 and out_voltageY_raw1;
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- enable toggle operation.
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What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw0
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What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw1
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KernelVersion: 5.18
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Contact: linux-iio@vger.kernel.org
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Description:
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It has the same meaning as out_voltageY_raw. This attribute is
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specific to toggle enabled channels and refers to the DAC output
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code in INPUT_A (_raw0) and INPUT_B (_raw1). The same scale and offset
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as in out_voltageY_raw applies.
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What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_symbol
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KernelVersion: 5.18
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Contact: linux-iio@vger.kernel.org
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Description:
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Performs a SW toggle. This attribute is specific to toggle
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enabled channels and allows to toggle between out_voltageY_raw0
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and out_voltageY_raw1 through software. Writing 0 will select
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out_voltageY_raw0 while 1 selects out_voltageY_raw1.
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