Serge

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    Serge got a reaction from Werner in eMMC device not Detected by armbian on nanoPi duo core   
    added &mmc2 section into ****nanopi-neo.dts
    from folder /usr/src/build/cache/sources/u-boot/v2019.04 run
    "git diff arch/arm/dts/sun8i-h3-nanopi-neo.dts > /usr/src/build/patch/kernel/sunxi-dev/my-neo-emmc.patch"
    from /usr/src/buid run ./compile.sh
    ...
    "dd if=/tmp/u-boot-sunxi-with-spl.bin of=/dev/mmcblk1 bs=1024 seek=8"
    reboot without SD - fault
     
    BTW. ***nanopi-neo.dts hasn't &mmc2 section again. Looks like patch wasn't applied. 
     
    I've copied .diff file to the same folder as Igor's destination: ./patch/u-boot/u-boot-sunxi
    from /usr/src/buid run ./compile.sh
    ...
    "dd if=/tmp/u-boot-sunxi-with-spl.bin of=/dev/mmcblk1 bs=1024 seek=8"
    and 
    "dd if=/tmp/u-boot-sunxi-with-spl.bin of=/dev/mmcblk1p1 bs=1024 seek=8" (I'm not sure but I did it)
     
    reboot without SD - SUCCESS!!!
     
    Thank you martinayotte&Igor for your support
     
    P.S.
    last (I hope) doubt....
    "dd if=/tmp/u-boot-sunxi-with-spl.bin of=/dev/mmcblk1 bs=1024 seek=8"
    this command will copy a .bin file into the root folder on eMMC... how it will be read by system during the load?
    no .bin files in SD-card's nor "/boot" folder nor "/ "folder
    current configuration: ls /dev | grep mmcblk
    mmcblk0
    mmcblk0p1
    mmcblk1
    mmcblk1boot0
    mmcblk1boot1
    mmcblk1p1