Install Coral AI PCIe Edge TPU on Raspberry Pi 5

coral-ai-pcie-edge-tpu-raspberrypi-5-setup

#!/bin/bash

cd /

sudo apt update

echo "deb https://packages.cloud.google.com/apt coral-edgetpu-stable main" | sudo tee /etc/apt/sources.list.d/coral-edgetpu.list

curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -

sudo apt-get update


sudo apt-get install libedgetpu1-std

sudo apt install -y devscripts debhelper

sudo apt install dkms

sudo apt-get install dh-dkms

# Clone the Gasket driver repository
sudo git clone https://github.com/google/gasket-driver.git

# Change directory to the cloned repository
cd gasket-driver

# Build the Gasket driver package
sudo debuild -us -uc -tc -b

# Go back to the parent directory
cd ..

# Install the built Gasket driver package
sudo dpkg -i gasket-dkms_1.0-18_all.deb


sudo sh -c "echo 'SUBSYSTEM==\"apex\", MODE=\"0660\", GROUP=\"apex\"' >> /etc/udev/rules.d/65-apex.rules"

sudo groupadd apex

sudo adduser $USER apex


# Update the boot configuration for Raspberry Pi
echo "kernel=kernel8.img" | sudo tee -a /boot/firmware/config.txt

# Back up the Device Tree Blob (DTB) 
sudo cp /boot/firmware/bcm2712-rpi-5-b.dtb /boot/firmware/bcm2712-rpi-5-b.dtb.bak 

# Decompile the DTB into a DTS file 
sudo dtc -I dtb -O dts /boot/firmware/bcm2712-rpi-5-b.dtb -o ~/test.dts 

# Modify the Device Tree Source (DTS) 
sudo sed -i '/pcie@110000 {/,/};/{/msi-parent = <[^>]*>;/{s/msi-parent = <[^>]*>;/msi-parent = <0x67>;/}}' ~/test.dts

# Recompile the DTS back into a DTB 
sudo dtc -I dts -O dtb ~/test.dts -o ~/test.dtb 

# Replace the old DTB with the new one 
sudo mv ~/test.dtb /boot/firmware/bcm2712-rpi-5-b.dtb

sudo reboot now

Following up on this, i use apt-mark to lock the kernel:

~ $ sudo apt-mark hold linux-headers-rpi-2712
linux-headers-rpi-2712 set on hold.
~ $ sudo apt-mark hold linux-headers-rpi-v8
linux-headers-rpi-v8 set on hold.
~ $ sudo apt-mark hold linux-image-rpi-2712
linux-image-rpi-2712 set on hold.
~ $ sudo apt-mark hold linux-image-rpi-v8
linux-image-rpi-v8 set on hold.
~ $ sudo apt-mark hold linux-libc-dev
linux-libc-dev set on hold.

after upgrade the kernel remain the same but the same issue occurs, so its some other package that got updated and cause the MSI-X issue

This can happen if the board you use does not have proper routing and a high quality FPC cable: raspberrypi/linux#6126

That is why the kernel overlay is not for coral itself, it does not work on all PCIe hats.

You can check for dmesg errors, but I think this is the problem

The Pineberry board has just arrived and it solved all of my problems. Works like magic.

It just works, both cores are visible and usable.

—-
I noticed a new kernel version is available. Do you know if it included everything required to let the hat work just from the box?

This can happen if the board you use does not have proper routing and a high quality FPC cable: raspberrypi/linux#6126
That is why the kernel overlay is not for coral itself, it does not work on all PCIe hats.
You can check for dmesg errors, but I think this is the problem

The Pineberry board has just arrived and it solved all of my problems. Works like magic.

It just works, both cores are visible and usable.

—- I noticed a new kernel version is available. Do you know if it included everything required to let the hat work just from the box?

Hi @sadontsev can you please share which method you have followed? I checked in the Pineborads website, and it says to update the kernel. I am a little bit confused. Do I have to do that or not?

Thanks in advance