Method and apparatus for providing reduced power usage of a display interface

A method comprising:

• detecting, by display logic, inactivity on a handshaking auxiliary channel between display driver logic and said display logic when a main link is on;
• entering a probing state on said auxiliary channel by said display logic in response to expiry of a time interval in which no further activity is detected by said display logic on said auxiliary channel;
• and
• leaving the main link on when the auxiliary channel is in the probing state.

A non-transitory computer readable memory comprising:

• executable instructions for execution by at least one processor, that when executed cause said at least one processor to:
• detect inactivity between a display driver logic and a display logic when a main link is on;
• deactivate an auxiliary channel between said display driver logic and said display logic;
• and
• wherein deactivating said auxiliary channel by said display driver logic, comprises:
• sending a request by said display driver logic to said display logic requesting that said display logic enter a low power state on said auxiliary channel;
• and
• leave a main link on when the auxiliary channel is deactivated.