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