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PCIe Interface

  • Connecting a PCIe Device (using a PCIe to M.2 adapter as an example)

Connect the PCIe to M.2 adapter as shown in the diagram, and insert the SSD.

rock 2a pack

  • Enable Overlay

    1. Open the Kconsole terminal and run the rsetup command:
     $ rsetup
    1. Through [Device Tree Configuration]to enable the "Enable PCIe" overlay.
    tip

    Please enable the [] Enable PCIeoverlay item.
    After successfully enabling [*] Enable PCIe, exit and reboot to apply the configuration.

    1. Reboot the system.

  • Testing

    1. The SSD device can be recognized.
    $ lsblk
    ...
    nvme0n1     259:0    0 953.9G  0 disk
    ├─nvme0n1p1 259:1    0    16M  0 part
    ├─nvme0n1p2 259:2    0   300M  0 part
    └─nvme0n1p3 259:3    0 953.5G  0 part
    ...
    1. Reading the Device
    # dd if=/dev/nvme0n1 of=/dev/zero bs=1M count=2048 status=progress
    2100297728 bytes (2.1 GB, 2.0 GiB) copied, 5 s, 420 MB/s
    2048+0 records in
    2048+0 records out
    2147483648 bytes (2.1 GB, 2.0 GiB) copied, 5.94583 s, 361 MB/s
    1. Writing to the Device
    # dd if=/dev/zero of=/dev/nvme0n1 bs=1M count=2048 status=progress
    2098200576 bytes (2.1 GB, 2.0 GiB) copied, 6 s, 350 MB/s
    2048+0 records in
    2048+0 records out
    2147483648 bytes (2.1 GB, 2.0 GiB) copied, 7.66734 s, 280 MB/s
tip

If the PCIe function is enabled on the ROCK 2A, the USB 3.0 OTG/HOST PORT can only be used as a USB 3.0 OTG/HOST PORT.