Hello everyone, I am trying to use the Metis PCIe (4GB) in combination with the firefly ITX-3588J.

Issue: I can not load the Metis kernel module (driver) into the Linux kernel

Setup:

• I have the Metis PCIe with 4GB of ram
•  the Firefly ITX-3588J with 16GB of ram with a RockChip. OS: Ubuntu 22.04.4 LTS.
• I have a Gen3 Pcie with 4 lanes, details below

```

        LnkCap:    Port #0, Speed 8GT/s, Width x4, ASPM L0s L1, Exit Latency L0s <4us, L1 <16us
            ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+
```

So far:

• I installed the ubuntu OS as described here: https://support.axelera.ai/hc/en-us/articles/25556437653138-System-Imaging-Guide-Firefly-RK3588
• I installed the latest 1.3.3 voyager sdk release. 
• i can see the metis board from lspci

``` firefly@firefly:~$ lspci | grep accelerators

01:00.0 Processing accelerators: Axelera AI Metis AIPU (rev 02)

```

• however, i do not detect any drivers for the board, even after installing the sdk. Both the following commands do not return anything:

```

lsmod | grep metis
ll /dev/ | grep metis

```

What i tried: im following this troubleshooting guide: https://support.axelera.ai/hc/en-us/articles/26261515755538-PCIe-Troubleshooting-Guide

1.`axdevice --refresh` gives me an error

```

(venv) firefly@firefly:~$ axdevice --refresh 
modprobe: FATAL: Module metis not found.
0000:01:00.0 : Axelera AI Metis AIPU (rev 02)
ERROR: No AIPU driver found in lsmod output
ERROR: AXR_ERROR_CONNECTION_ERROR: No AIPU driver found in lsmod output
```

2.modprobe gives me an error (not found)

```

(venv) firefly@firefly:~$ sudo modprobe metis
modprobe: FATAL: Module metis not found in directory /lib/modules/5.10.160
```

3.I am trying to do this “Disable PCIe ASPM (Active State Power Management)”. However there is uboot on the firefly, insted of grub (your guide gives me indications for grub). I still culd not fige how to disable these power managements in uboot

4.looks like secure boot is not supported in my system, so i can not enable/disable it

```

(venv) firefly@firefly:~$ sudo mokutil --sb-state
EFI variables are not supported on this system
```

apparently, the os is booted in legacy mode, and Linux won’t expose `/sys/firmware/efi`. I believe is because im not using grub

5.kernel drivers are not loaded: `cat /sys/class/metis/version` returns me nothing

6.i could not check the firware version of the board

```

(venv) firefly@firefly:~$ triton_multi_ctx --bc-version
$libtriton_linux.c:985] Could not open directory '/sys/class/metis/': No such file or directory
Fail to get device name
```

---

I attach the verbose log of my voyager sdk build

i only get one warning that looks suspicous

```

refreshing pcie and firmware
WARNING: Failed to refresh pcie and firmware

```

---

possible solution:

in the toubleshooting guide above there is a title “Check memory overlays of your SOC”. Looks like rockchips are affected by this issue

“The board has a Rockchip chip or another SOC such as NXP or Broadcom SOCs”

It is written tha you could get me some help to fix this problem

```

Solution

You need to increase the size in your custom device-tree or insert a PCIe overlay.

Contact Axelera AI if you need further help, explaining which SOC you have in your board.

```

Do you have more specific instructions to make this modification on the firefly board?

thanks a lot, and sorry for the super long message :D