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authorMarc Titinger <mtitinger@baylibre.com>2015-12-14 12:01:10 +0100
committerJonathan Cameron <jic23@kernel.org>2015-12-19 15:08:00 +0000
commit6e17c98a004c921e07bdecdb8cc2320488f88759 (patch)
tree5febfbf5dbf79fe3db51114036f588fbc14c184a /Documentation/ABI
parent75e1a3a789e1f7437e4d369a5ba45ebd5dd24490 (diff)
iio: ina2xx: add ABI documentation entry sysfs-bus-iio-ina2xx-adc
Documentation for attributes: * in_allow_async_readout * in_shunt_resistor Signed-off-by: Marc Titinger <mtitinger@baylibre.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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+What: /sys/bus/iio/devices/iio:deviceX/in_allow_async_readout
+Date: December 2015
+KernelVersion: 4.4
+Contact: linux-iio@vger.kernel.org
+Description:
+ By default (value '0'), the capture thread checks for the Conversion
+ Ready Flag to being set prior to committing a new value to the sample
+ buffer. This synchronizes the in-chip conversion rate with the
+ in-driver readout rate at the cost of an additional register read.
+
+ Writing '1' will remove the polling for the Conversion Ready Flags to
+ save the additional i2c transaction, which will improve the bandwidth
+ available for reading data. However, samples can be occasionally skipped
+ or repeated, depending on the beat between the capture and conversion
+ rates.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_shunt_resistor
+Date: December 2015
+KernelVersion: 4.4
+Contact: linux-iio@vger.kernel.org
+Description:
+ The value of the shunt resistor may be known only at runtime fom an
+ eeprom content read by a client application. This attribute allows to
+ set its value in ohms.