A40i Board FEL USB/Boot

46 views

Skip to first unread message

Chet T

unread,

Apr 20, 2020, 11:46:17 AM4/20/20

to linux-sunxi

Hello,

I am trying initialize an A40i board using USB OTG port when the device is in Fel mode. Pulled this board from an Arcade1up cabinet.

sunxi-fel -l

USB device 001:075 Allwinner R40 13000001:94404700:78928308:300f05d1

The Soc is labeled A40i with no visible writing on the Dram chip. I’ve tried to compile u-boot using defconfigs of the two available boards based on the R40(Banana Pi M2 Ultra and Berry). I’ve also tried several different memory settings “CONFIG_DRAM_CLK” including failsafe setting but the board appears to hang at DRAM initialization.

sunxi-fel spl u-boot-sunxi-with-spl.bin

Serial Output

U-boot SPL 2020.04-rc3

DRAM:

I attempted to follow the retrieving device information wiki but the read commands time out.

sunxi-fel read 0x42400000 0x82d0 boot1.header

usb_bulk_send() ERROR -7: Operation timed out

No serial output is displayed during a normal boot.

Any suggestions of how I can determine the memory setting for this board? Is the A40i Soc supported as a R40 device?