1What:		/sys/bus/iio/devices/iio:deviceX/in_voltage_spi_clk_freq
 2KernelVersion:	4.14
 3Contact:	arnaud.pouliquen@st.com
 4Description:
 5		For audio purpose only.
 6
 7		Used by audio driver to set/get the spi input frequency.
 8
 9		This is mandatory if DFSDM is slave on SPI bus, to
10		provide information on the SPI clock frequency during runtime
11		Notice that the SPI frequency should be a multiple of sample
12		frequency to ensure the precision.
13
14		if DFSDM input is SPI master:
15
16			Reading  SPI clkout frequency,
17			error on writing
18
19		If DFSDM input is SPI Slave:
20
21			Reading returns value previously set.
22			Writing value before starting conversions.

 1What:		/sys/bus/iio/devices/iio:deviceX/in_voltage_spi_clk_freq
 2KernelVersion:	4.14
 3Contact:	arnaud.pouliquen@st.com
 4Description:
 5		For audio purpose only.
 
 6		Used by audio driver to set/get the spi input frequency.
 
 7		This is mandatory if DFSDM is slave on SPI bus, to
 8		provide information on the SPI clock frequency during runtime
 9		Notice that the SPI frequency should be a multiple of sample
10		frequency to ensure the precision.
11		if DFSDM input is SPI master
 
 
12			Reading  SPI clkout frequency,
13			error on writing
 
14		If DFSDM input is SPI Slave:
 
15			Reading returns value previously set.
16			Writing value before starting conversions.