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

[viel]

Hi all,

This is mi experience trying boot with the NVMe SSD Intel 660p M.2 1 TB SSDPEKNW010T8X1 on PBP for now:

After dd if=Manjaro-ARM-i3-pbpro-20.06.img of=/dev/nvme0n1
and flashing SPI following @pcm720 
https://github.com/pcm720/u-boot-build-scripts/releases/tag/v2020.07-1 
# flash_erase /dev/mtd0 0 0
# dd if=spiflash.bin of=/dev/mtd0
and unplug/remove SD and eMMC

1. when i boot the pinebook pro with the new SPI config, the power led stay ambar 10 seconds then turns green and boot. (On firsts boots after unboxin PBP the power led tuns green after 1 second.)
   
2. the screen resolution don't work correctly and can log in. I pluged the eMMc and reboot the PBP. then it boot from emmc correctly before reboot the first wrong boot with no screen.
   
3. can't boot from SD.
   

I decided delete the spi due to https://wiki.pine64.org/index.php/Pinebo...le_Storage  and return to factory boot. If i undestood it well (At this time, the Pinebook Pro ships with a Manjaro + KDE build with uboot on the eMMC. Its boot order is: SD, USB, then eMMC.)  
# flash_erase /dev/mtd0 0 0

but the power led remain ambar for 10 seconds when i power up the PBP. Then boot normal from emmc or sd without problems.

I have bought a UART cable and a USB Type-A to USB-C cable and this weekend i will have it to see what is happen during ambar power led boot stage.

some info/help are welcome, thanks.