As far as (2,2)
'as far as' is the definition.
('up to' and 'as far as' can both mean 'until')
This is all the clue.
(Other definitions for up to that I've seen before include "Engaged in doing" , "Plotting" , "Incumbent upon" , "Capable of" , "As many as, though no more" .)
'as far as' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for upto that I've seen before include "To the time that" , "'Having the requisite qualities for (2,2)'" , "Motorcade escort" , "Capable of or engaged in" , "Engaged in - no good?" .)