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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/ABI/testing/sysfs-bus-iio-dfsdm-adc-stm32
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+What: /sys/bus/iio/devices/iio:deviceX/in_voltage_spi_clk_freq
+KernelVersion: 4.14
+Contact: arnaud.pouliquen@st.com
+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.