linux_dsm_epyc7002/Documentation/ABI/testing/sysfs-bus-i2c-devices-pca954x
Mauro Carvalho Chehab 3443333284 docs: ABI: testing: make the files compatible with ReST output
Some files over there won't parse well by Sphinx.

Fix them.

Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for IIO
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/58cf3c2d611e0197fb215652719ebd82ca2658db.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-30 13:07:01 +01:00

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What: /sys/bus/i2c/.../idle_state
Date: January 2019
KernelVersion: 5.2
Contact: Robert Shearman <robert.shearman@att.com>
Description:
Value that exists only for mux devices that can be
written to control the behaviour of the multiplexer on
idle. Possible values:
=========== ===============================================
-2 disconnect on idle, i.e. deselect the last used
channel, which is useful when there is a device
with an address that conflicts with another
device on another mux on the same parent bus.
-1 leave the mux as-is, which is the most optimal
setting in terms of I2C operations and is the
default mode.
0..<nchans> set the mux to a predetermined channel,
which is useful if there is one channel that is
used almost always, and you want to reduce the
latency for normal operations after rare
transactions on other channels
=========== ===============================================