I have a few of those and when connected to RPi5 PSU and set to 12V, it can power my Rock5B with NVME SSD and some other peripherals as well.

I tested the new driver in my box (the router and box are in two different rooms). As you can see, just as @WallaceWebs mentioned, the upload speed has improved significantly. Before merging this pull request, the speed was 8.25Mbps, and now it is 33.46Mbps. Idle Latency: 11.17 ms (jitter: 1.63ms, low: 10.02ms, high: 12.42ms) Download: 38.57 Mbps (data used: 22.8 MB) 97.38 ms (jitter: 31.45ms, low: 16.86ms, high: 432.50ms) Upload: 33.46 Mbps (data used: 54.8 MB) 127.94 ms (jitter: 41.37ms, low: 28.14ms, high: 628.78ms) Packet Loss: 0.0%

> As I mentoined earlier, I use fixed 12V for ROCK5B, else no success. For NanoPi-R6C it works with 5V 3A (27W RPI5 PSU). I ordered a USB-PD trigger board that does the negotiation before the board and output a constant voltage, I will see how it goes

Hi @Sand_Death, Thanks a lot for identifying this! Could you please check if this also happens on the kernel provided by Radxa? If it works on their side, it's likely something we need to address in our configuration. Since PCIe is still handled by the vendor's BSP, if it's a bug on their end, it would be best to open an issue with Radxa first. I'm happy to take a closer look once I have some time later.

The (standard) Armbian images for Rock5b use boot.scr, not efi/boot/bootaa64.efi from an extra FAT/ESP partition. So no surprise. If you use the EDK2 UEFIv1.1 in the SPI-flash, you should use a generic UEFI ARM64 image. 1 such is Armbian for UEFI ARM64, look at the download options. I don't know, but make sure it is one with latest mainline kernel 7.0.x. What I have used is a Debian Sid nocloud image just as a quick test (testing that image on a NanoPi-R6C, should also work on Rock5b, not the UEFI/bootloader behavior. See https://cloud.debian.org/images/cloud/sid/daily/latest/debian-sid-nocloud-arm64-daily.tar.xz As I mentoined earlier, I use fixed 12V for ROCK5B, else no success. For NanoPi-R6C it works with 5V 3A (27W RPI5 PSU).