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TDA4VM: linux and mcu/dsp ipc sync wait time not correct

Part Number: TDA4VM

Dear expert

                 I want to optimize tda4vm board boot time,  and I found linux remoteproc driver already set the mcu/dsp device status ok, but the dsp/mcu don't get the status immediately, it's delay about 6.7s, actually ti's only need wait 1s,  the fllow pictures are my logs and some codes prove my point.  please help analysis it and fixed this problem,  thanks!

    kernel boot log

  mcu2_0 boot log