First, that file should probably be named sysfs-interface.txt. Then,
it
+vrm Voltage Regulator Module version number.
+ Read only.
+ Two digit number (XX), first is major version, second
is
+ minor version.
+ Affects the way the driver calculates the core voltage
from
+ the vid pins. See doc/vid for details.
Points to doc/vid, but there's no such file in kernel tree.
Pavel
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