U-Boot 2016.03-g28cc50d-dirty (Dec 22 2020 - 17:29:28 +0800)

CPU:   Freescale i.MX6ULL rev1.1 528 MHz (running at 396 MHz)
CPU:   Industrial temperature grade (-40C to 115C) at 35C
Reset cause: POR
Board: MYD-Y6ULL 14x14
DRAM:  256 MiB
NAND:  256 MiB
MMC:   FSL_SDHC: 0
In:    serial
Out:   serial
Err:   serial
Net:   FEC0
Error: FEC0 address not set.

Normal Boot
Hit any key to stop autoboot:  0

NAND read: device 0 offset 0x600000, size 0x800000
 8388608 bytes read: OK

NAND read: device 0 offset 0xe00000, size 0x200000
 2097152 bytes read: OK
Kernel image @ 0x80800000 [ 0x000000 - 0x5f0958 ]
ERROR: Did not find a cmdline Flattened Device Tree
Could not find a valid device tree
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