summaryrefslogtreecommitdiff
path: root/Documentation
diff options
context:
space:
mode:
authorMauro Carvalho Chehab <mchehab+huawei@kernel.org>2020-06-15 09:50:13 +0300
committerJonathan Corbet <corbet@lwn.net>2020-06-19 23:05:49 +0300
commit8a05eb89cb84eba1091bdc6baa9d0e463655779f (patch)
tree821de190af69dd16eeed8ccc480864275f13af31 /Documentation
parent3471b9f7e43d3505fcffc63d0271f13dd9246873 (diff)
downloadlinux-8a05eb89cb84eba1091bdc6baa9d0e463655779f.tar.xz
docs: misc-devices/pci-endpoint-test.txt: convert to ReST
- use title markups; - mark literal blocks. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/1b1f4e5e57fd2065828cecc9d07afbd247349e94.1592203650.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/misc-devices/ad525x_dpot.rst (renamed from Documentation/misc-devices/ad525x_dpot.txt)24
-rw-r--r--Documentation/misc-devices/index.rst1
2 files changed, 13 insertions, 12 deletions
diff --git a/Documentation/misc-devices/ad525x_dpot.txt b/Documentation/misc-devices/ad525x_dpot.rst
index 0c9413b1cbf3..6483ec254520 100644
--- a/Documentation/misc-devices/ad525x_dpot.txt
+++ b/Documentation/misc-devices/ad525x_dpot.rst
@@ -1,6 +1,8 @@
----------------------------------
- AD525x Digital Potentiometers
----------------------------------
+.. SPDX-License-Identifier: GPL-2.0
+
+=============================
+AD525x Digital Potentiometers
+=============================
The ad525x_dpot driver exports a simple sysfs interface. This allows you to
work with the immediate resistance settings as well as update the saved startup
@@ -8,9 +10,8 @@ settings. Access to the factory programmed tolerance is also provided, but
interpretation of this settings is required by the end application according to
the specific part in use.
----------
- Files
----------
+Files
+=====
Each dpot device will have a set of eeprom, rdac, and tolerance files. How
many depends on the actual part you have, as will the range of allowed values.
@@ -24,23 +25,22 @@ and may vary greatly on a part-by-part basis. For exact interpretation of
this field, please consult the datasheet for your part. This is presented
as a hex file for easier parsing.
------------
- Example
------------
+Example
+=======
Locate the device in your sysfs tree. This is probably easiest by going into
-the common i2c directory and locating the device by the i2c slave address.
+the common i2c directory and locating the device by the i2c slave address::
# ls /sys/bus/i2c/devices/
0-0022 0-0027 0-002f
So assuming the device in question is on the first i2c bus and has the slave
-address of 0x2f, we descend (unrelated sysfs entries have been trimmed).
+address of 0x2f, we descend (unrelated sysfs entries have been trimmed)::
# ls /sys/bus/i2c/devices/0-002f/
eeprom0 rdac0 tolerance0
-You can use simple reads/writes to access these files:
+You can use simple reads/writes to access these files::
# cd /sys/bus/i2c/devices/0-002f/
diff --git a/Documentation/misc-devices/index.rst b/Documentation/misc-devices/index.rst
index 56fc1e03488a..d05626dd0fbb 100644
--- a/Documentation/misc-devices/index.rst
+++ b/Documentation/misc-devices/index.rst
@@ -14,6 +14,7 @@ fit into other categories.
.. toctree::
:maxdepth: 2
+ ad525x_dpot
eeprom
ibmvmc
ics932s401