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I solevd it, it related to USB erratum in uboot code about soc.
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Please use QCVS DDRv tool to connect to the target board to do DDR validation to get the optimized DDR controller configuration parameters.
Then modify atf/plat/nxp/soc-ls1046/ls1046ardb/ddr_init.c according to these parameters.
I had posted this more 5 times but everytime it be marked as spam， i did not konw why!!
i have correctly checked CRC in 0x82000000 data and flash data.