U-Boot with direct NVMe boot support for eMMC/SPI Flash

[pcm720]

I haven't really spent a lot of time with eMMC, but I feel that the difference in not big enough to notice.
Yes, it's a little bit snappier, but you still have to wait for applications to load since the real bottleneck here is the CPU.

Anyway, I can't really do any comparisons since I don't have the  eMMC in my PBP anymore.
The repository was updated with SPI image

So we can finally boot directly from NVMe? What do we have to do for that?

edit: I noticed this link https://github.com/pcm720/rockchip-u-boot/releases and this step:

# dd if=spiflash.bin of=/dev/mtd0

So after flashing, it will allow to boot from NVMe without eMMC? what about SD card priority?

Yes. The U-Boot is set up to look for boot scripts/extlinux configuration files in the following order: microSD, NVMe, eMMC, anything else.
However, there's a catch with pre-made microSD images. See OP for details.