unable to boot

[timnis76]

Hello, I have T2-OLinuXino-LIME2-e8Gs16M-IND rev. L board and its not booting.
I have downloaded latest buster and focal minimal images from https://images.olimex.com/release/a20/ and write it to sd cards. When I try to boot I get following boot sequence (below). I have also tried multiple sd cards, but still not booting. Could some help me?

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U-Boot SPL 2021.04+olimex-1-20210507.081028 (May 07 2021 - 08:11:19 +0000)
DRAM: 1024 MiB
CPU: 912000000Hz, AXI/AHB/APB: 3/2/2
Loading configuration from EEPROM: OK
Verifying data: OK
Trying to boot from MMC1


U-Boot 2021.04+olimex-1-20210507.081028 (May 07 2021 - 08:11:19 +0000) Allwinner Technology

CPU:   Allwinner A20 (SUN7I)
ID:    T2-OLinuXino-LIME2-e8Gs16M-IND Rev.L
SN:    000170E8
MAC:   30:1F:9A:D0:BD:8F
I2C:   ready
DRAM:  1 GiB
SF: Detected w25q128 with page size 256 Bytes, erase size 4 KiB, total 16 MiB
MMC:   mmc@1c0f000: 0, mmc@1c11000: 1
Loading Environment from EXT4... *** Warning - bad CRC, using default environment

Loading Environment from FAT... ** No device specified **
HDMI connected: Setting up a 1920x1080 hdmi console (overscan 0x0)
In:    serial
Out:   vga
Err:   vga
Allwinner mUSB OTG (Peripheral)
Net:   

I also tested latest buildroot and builded minimal image for the board and it gave following boot

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U-Boot 2021.04 (May 19 2021 - 10:58:40 +0300) Allwinner Technology

CPU:   Allwinner A20 (SUN7I)
Model: Olimex A20-OLinuXino-LIME2
I2C:   ready
DRAM:  1 GiB
MMC:   mmc@1c0f000: 0
Loading Environment from FAT... Unable to use mmc 0:1... HDMI connected: Setting up a 1920x1080 hdmi console (overscan 0x0)
In:    serial
Out:   vga
Err:   vga
Allwinner mUSB OTG (Peripheral)
Net:   eth0: ethernet@1c50000, eth1: usb_ether


[timnis76]

Ok, now it work. Looks like that USB_OTG could not power bare board enough so I switched to DC power and now it boot up.

[LubOlimex]

Thanks for update! Yes, LIME2 board's can't be sufficiently powered via the USB, even if you use externally powered USB. Never count on the USB connector for powering the board.