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?
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
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
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.
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.