If you did not check the files you edited, first do
p4 reconcile ...
to get changes tracked by Perforce.
You do not need this if the changes you want to revert are already in any change list.
Then from the root of the workspace
p4 revert ...
( ...- this is the Perforce template for everything that is in this directory, not what you need to fill out).
, 2013.2 , -w p4 revert, . . .
reconcile , revert . -w , , .