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7e798ef90c
This patch adds standard documentation for the Generic Counter interface userspace sysfs attributes of the 104-QUAD-8 driver. Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
36 lines
1.3 KiB
Text
36 lines
1.3 KiB
Text
What: /sys/bus/counter/devices/counterX/signalY/index_polarity
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KernelVersion: 5.2
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Contact: linux-iio@vger.kernel.org
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Description:
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Active level of index input Signal Y; irrelevant in
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non-synchronous load mode.
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What: /sys/bus/counter/devices/counterX/signalY/index_polarity_available
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What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_available
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KernelVersion: 5.2
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Contact: linux-iio@vger.kernel.org
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Description:
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Discrete set of available values for the respective Signal Y
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configuration are listed in this file.
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What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode
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KernelVersion: 5.2
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Contact: linux-iio@vger.kernel.org
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Description:
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Configure the counter associated with Signal Y for
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non-synchronous or synchronous load mode. Synchronous load mode
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cannot be selected in non-quadrature (Pulse-Direction) clock
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mode.
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non-synchronous:
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A logic low level is the active level at this index
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input. The index function (as enabled via preset_enable)
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is performed directly on the active level of the index
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input.
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synchronous:
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Intended for interfacing with encoder Index output in
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quadrature clock mode. The active level is configured
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via index_polarity. The index function (as enabled via
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preset_enable) is performed synchronously with the
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quadrature clock on the active level of the index input.
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