To exclude board factor, i get another board, Cubieboard2, desolder nand chip and put emmc on sdc2 lines. Boot kernel from sd on sdc0 lines, kernel init emmc well, in 4 bit mode
So, some trouble in u-boot is exist, PLEASE HELP! U-Boot SPL 2016.11-rc1-g4dc34be
My board - A20:
U-Boot with my config EMMC on sdc0 lines U-Boot output:
Trying to boot from MMC1 mmc_load_image_raw_sector: mmc block read error SPL: failed to boot from all boot devices ### ERROR ### Please RESET the board ###
MarsBoard - A20:
U-Boot with my config and mmc extra slot config set to 2 EMMC on sdc2 lines EMMC works from linux with 4-bit bus width, if boot from SD card on sdc0 lines
U-Boot output:
Trying to boot from MMC2 mmc_load_image_raw_sector: mmc block read error SPL: failed to boot from all boot devices ### ERROR ### Please RESET the board ###
Cubieboard2 - A20:
U-Boot with Cubieboard_defconfig and mmc extra slot config set to 2 EMMC on sdc2 lines EMMC works from linux with 4-bit bus width, if boot from SD card on sdc0 lines
U-Boot output:
Trying to boot from MMC2 mmc_load_image_raw_sector: mmc block read error SPL: failed to boot from all boot devices ### ERROR ### Please RESET the board ###