Hello, dear god.
Now I use TI AM3352 + 65910 for three pieces of the board, refer to guangzhou day embedded design, a power supply and reset all normal, there are two pieces of power supply is normal, SYS_WARMRESETn reset is not normal, for low level all the time, testing found CAP_VDD_SRAM_CORE=1.1 V
CAP_VDD_SRAM_MPU=1.1 V, and in theory should be 1.2 V, this may be what reason is caused? Can ask you the great spirit guide! Thank you very much!