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authorChris Packham <chris.packham@alliedtelesis.co.nz>2018-10-31 09:25:27 +1300
committerGuenter Roeck <linux@roeck-us.net>2018-12-02 16:25:28 -0800
commitf1af93216c3460873e0ff46f17951eac4c066d79 (patch)
tree18dc031de879e3e77bf7220e8f9a1fed3fd66f21 /Documentation/hwmon
parent3b443def46cc730c0ba590c5692d085b80a8659c (diff)
hwmon: (adt7475) document mapping of sysfs entries to inputs
As per the usual standard with hwmon drivers the mapping to sysfs entries follows the register map of the device e.g. in0_input corresponds to the register 0x20, in1_input corresponds to 0x21 etc. Hardware designers tend to work with input pins instead of registers which is where things start to get confusing. A hardware designer might say "the 1.5V rail is connected to the VCCP pin" leaving the software designer none the wiser as to which of the sysfs entries should be associated with the label "1.5V". Try to bridge the gap by documenting the mapping of sysfs entries to the corresponding pins. This should allow someone to create a configuration file or other mapping without needing to dive into the code and ADT datasheets. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
-rw-r--r--Documentation/hwmon/adt747512
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/hwmon/adt7475 b/Documentation/hwmon/adt7475
index 09d73a10644c..01b46b290532 100644
--- a/Documentation/hwmon/adt7475
+++ b/Documentation/hwmon/adt7475
@@ -79,6 +79,18 @@ ADT7490:
* 2 GPIO pins (not implemented)
* system acoustics optimizations (not implemented)
+Sysfs Mapping
+-------------
+
+ ADT7490 ADT7476 ADT7475 ADT7473
+ ------- ------- ------- -------
+in0 2.5VIN (22) 2.5VIN (22) - -
+in1 VCCP (23) VCCP (23) VCCP (14) VCCP (14)
+in2 VCC (4) VCC (4) VCC (4) VCC (3)
+in3 5VIN (20) 5VIN (20)
+in4 12VIN (21) 12VIN (21)
+in5 VTT (8)
+
Special Features
----------------