Turning off dtv TG may cause blink. MDP requires h/w idle to change blt mode, turning off TG can make sure mdp h/w is idle. If turning off TG is not desired, one way to do is to check busy bits of overlay and dmae and once they are both idle, the mode can be changed. CRs-Fixed: 363717 Change-Id: I2817d7751ed04fd9ed144974328c4518c54af3d6 Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org> Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>