Enable PCIe Gen3

Enable PCIe

Edit the /boot/firmware/config.txt file.

radxa@radxa-taco$

sudo nano /boot/firmware/config.txt

Add dtparam=pciex1 to the end of the file, then save and reboot.

dtparam=pciex1

Use the lsblk command to view disk devices.

radxa@radxa-taco$

lsblk

step2

Below is a simple speed test. Since a mechanical hard drive is used, the speed is relatively lower.

radxa@radxa-taco$

sudo dd if=/dev/zero of=/dev/sda bs=32M status=progress count=100 oflag=direct

step3

Adding dtparam=pciex1_gen=3 to /boot/firmware/config.txt allows the Raspberry Pi CM5 to force PCIe Gen 3.

step4

After adding and rebooting, use the following commands to check the Radxa Taco connection status.

radxa@radxa-taco$

sudo lspci
sudo lspci -vvv -s 0000:01:00.1 | grep LnkSta

step5

After seeing Gen3 is used, we can test the write speed again.

step6