Revert "Cleanup"

This reverts commit bc5a5c3d93ca4860bbe7e68a3b9643d8cc5da4b2.
Revert "Suport overclock upto 800 Mhz"

This reverts commit dc8146ac0f93c7dab879f89b6e705bb15cc94535.
Merge remote-tracking branch 'upstream/master'