AM437xx trouble shoot

U-Boot 2017.01 (Jan 03 2022 - 16:21:14 +0800)

CPU : AM437X-GP rev 1.2
DRAM: 512 MiB
Can't find PMIC:TPS65218_PMIC
NAND: 512 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - bad CRC, using default environment

Net: <ethaddr> not set. Validating first E-fuse MAC
cpsw, usb_ether
Hit <SPACE> key to stop autoboot in 1s
omap_hsmmc_send_cmd: timedout waiting on cmd inhibit to clear
omap_hsmmc_send_cmd: timedout waiting on cmd inhibit to clear
** Bad device mmc 0 **
There is no valid bmp file at the given address
omap_hsmmc_send_cmd: timedout waiting on cmd inhibit to clear
omap_hsmmc_send_cmd: timedout waiting on cmd inhibit to clear
SD/MMC found on device 0
bad MBR sector signature 0x11aa
** Invalid partition 1 **
bad MBR sector signature 0x51aa
** Invalid partition 1 **
omap_hsmmc_send_cmd: timedout waiting on cmd inhibit to clear
omap_hsmmc_send_cmd: timedout waiting on cmd inhibit to clear
SD/MMC found on device 0
** No partition table - mmc 0 **
Booting from nand ...

Device 0: nand0, sector size 256 KiB
Page size 4096 b
OOB size 224 b
Erase size 262144 b
subpagesize 1024 b
options 0x4000000c
bbt options 0x 0

NAND read: device 0 offset 0x200000, size 0x80000
524288 bytes read: OK

NAND read: device 0 offset 0x280000, size 0x400000
4194304 bytes read: OK
starting USB...
USB0: Register 2000440 NbrPorts 2
Starting the controller
USB XHCI 1.00
scanning bus 0 for devices... 2 USB Device(s) found
scanning usb for storage devices... 0 Storage Device(s) found

USB device 0: unknown device

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