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Purple light LPDDR4 use problem

Time：04-14

Using Hi3559av100 + purple light LPDDR4, startup, if inside the uboot delay 15 seconds can normal boot, if the delay is set to 0, had problems with the kernel boot
The same board, use the micron DDR is normal,
Nature of work, the computer can't connected to the Internet, so can't screenshots, can only take screen, also please forgive me,

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