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22 lines
642 B
22 lines
642 B
What: /sys/bus/iio/devices/iio:deviceX/in_voltage_spi_clk_freq |
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KernelVersion: 4.14 |
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Contact: [email protected] |
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Description: |
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For audio purpose only. |
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Used by audio driver to set/get the spi input frequency. |
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This is mandatory if DFSDM is slave on SPI bus, to |
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provide information on the SPI clock frequency during runtime |
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Notice that the SPI frequency should be a multiple of sample |
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frequency to ensure the precision. |
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if DFSDM input is SPI master: |
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Reading SPI clkout frequency, |
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error on writing |
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If DFSDM input is SPI Slave: |
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Reading returns value previously set. |
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Writing value before starting conversions.
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