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