Commits
Liu Ying committed c966fb37749
MLK-11316-4 video: mxc ipuv3 fb: Change on-the-fly switch mechanism for PRE workaround In order to workaround the PRE SoC bug recorded by errata ERR009624, the software cannot write the PRE_CTRL register when the PRE writes the PRE_CTRL register automatically to set the ENABLE bit(bit0) to 1 in the PRE repeat mode. Instead of setting the PRE_CTRL register any time we want to do on-the-fly switch(PRE keeps working before and after the switch), we change to set the register in the on-the-fly configuration interrupt(EOF) handler. This way, we may avoid encountering the problematic PRE automatic writing cycle for sure. Signed-off-by: Liu Ying <Ying.Liu@freescale.com> (cherry picked from commit 6218cbcf34f5fb7910a824a8d31cc58819d0bd00)