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Compiler/TDA2SG: MMC IS NOT WORK WELL

Part Number: TDA2SG

Tool/software: TI C/C++ Compiler

I    start the system from the sd 32G,and  sometimes it will not work well:

as follow ,log is,how can  I do?

2.In my kernel  ,mmc dts like this,but  I  check the  mmc clock  is only 50M,and voltage is 3.3.why the mmc cannot  change the voltage to 1.8v

and work in 200M clock?