I have following configuration:
Rock PI 4B 4GB v1.4
Rock PI 4x - M.2 Extension board v1.4
ACER M.2 NVMe SSD for Rock Pi4 - 1TB
I have successfully installed the u-boot image to SPI flash following the Method Two: Write image to SPI flash using mtd tool.
I can boot from µSD without problems as long as the NVMe SSD is not connected.
I can access the SSD when connected via an USB adapter.
When I connect the SSD to the extension board, the green LED is on, the blue one stays dark.
The same is when I connect the SSD directly to the Rock PI 4 board.
Any glue what is wrong?