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[rowboat issue ]MIPI DSI update in command mode with manual update

Other Parts Discussed in Thread: DM3730
I'm working on my custom DM3730 board, using mipi dsi panel. My os verion is Android 2.3.4. The update mode of panel is OMAP_DSS_UPDATE_MANUAL. The DSI works in command mode in this os version. My problem is that the content of panel can not update, although the framebuffer is updated. So I need to call OMAPLFBUnblankDisplay() in the Omaplfb_linux.c (hardware\ti\sgx\services4\3rdparty\dc_omapfb3_linux). I call this function in OMAPLFBFlip().  Because once the framebuffer changes,  OMAPLFBFlip() is been called. But the panel refresh a little slowly in this way. Is there anyone encountered this issue before? Any suggestioin is appreciated!
 
Thanks in advance!
Steven,